Program: 25th Conference on Severe Local Storms (25th Conference on Severe Local Storms (11

Mon. 11 October

Session 1

Severe Weather Climatology I

Location: Grand Mesa Ballroom F (Hyatt Regency Tech Center)

Host: 25th Conference on Severe Local Storms

Chair: Lance Bosart, SUNY

9:00 AM

Welcoming Remarks

9:05 AM

1.1

Tornado deaths: what the past tells us about the future

Harold E. Brooks, NOAA/NSSL, Norman, OK

Recorded Presentation

9:20 AM

1.2

Attribution of interannual variations in tornado frequency to regional atmospheric conditions

Robert J. Trapp, Purdue University, West Lafayette, IN

Recorded Presentation

9:35 AM

1.3

Nocturnal tornado climatology

Amanda K. Kis, University of Oklahoma, Norman, OK; and J. Straka

Recorded Presentation

9:50 AM

1.4

A synoptic-scale environment associated with significant nocturnal tornado events in the Great Plains

Corey M. Mead, NOAA/NWS/SPC, Norman, OK; and R. L. Thompson

Recorded Presentation

Presentation PDF (1022.7 kB)

10:05 AM

1.5

Tornadoes within weak CAPE environments across the continental United States

Jared L. Guyer, NOAA/NWS, Norman, OK; and A. R. Dean

Recorded Presentation

Presentation PDF (457.3 kB)

Coffee Break

Location: Grand Mesa Ballroom ABC (Hyatt Regency Tech Center)

Session 2

Mesoscale Convective Systems: Initiation and Structure

Location: Grand Mesa Ballroom F (Hyatt Regency Tech Center)

Host: 25th Conference on Severe Local Storms

Chair: Matthew D. Parker, North Carolina State University

10:45 AM

2.1

Potential vorticity disturbances as a source of severe weather in the Southwest

Lance Bosart, University at Albany, Albany, NY; and T. J. Melino, S. R. Sukup, S. J. Weiss, J. Racy, R. S. Schneider, E. S. Pytlak, J. E. Matusiak, and D. Bright

Recorded Presentation

11:00 AM

2.2

Observations of a squall line using high-frequency rawinsonde launches during VORTEX2

George H. Bryan, NCAR, Boulder, CO; and M. D. Parker

Recorded Presentation

11:15 AM

2.3

Mechanisms contributing to MCS development over the southern Plains during BAMEX

Thomas J. Galarneau Jr., CIRES/Univ. of Colorado, Boulder, CO; and L. Bosart

Recorded Presentation

11:30 AM

2.4

Observations and numerical simulations of the transition of a banded nocturnal MCS to a daytime squall line

S. B. Trier, NCAR, Boulder, CO; and J. H. Marsham

Recorded Presentation

11:45 AM

2.5

Detailed observations of severe heat bursts: microbursts, intense microscale vortices, and high amplitude gravity waves

Kevin R. Knupp, Univ. of Alabama, Huntsville, AL; and T. Coleman

Recorded Presentation

Break for Lunch

Session 3A

Deep Convection: Initiation and Mesoscale Influences

Location: Grand Mesa Ballroom F (Hyatt Regency Tech Center)

Host: 25th Conference on Severe Local Storms

Chair: Christopher C. Weiss, Texas Tech University

1:30 PM

3A.1

Sensitivity of convective initiation and subsequent convection based on environmental parameters using 500m resolution WRF ARW

Justin Schultz, Iowa State University, Ames, IA; and C. J. Anderson

Recorded Presentation

Presentation PDF (928.3 kB)

1:45 PM

3A.2

A convection initiation case study during COPS: 6 August 2007

Lindsay J. Bennett, National Centre for Atmospheric Science, Leeds, U.K.; and T. M. Weckwerth, J. Van Baelen, A. M. Blyth, R. R. Burton, and A. M. Gadian

Recorded Presentation

2:00 PM

3A.3

Using Canadian GEM output for forecasts of thunderstorm initiation on the Canadian Prairies

Neil M. Taylor, EC, Edmonton, AB, Canada; and W. R. Burrows

Recorded Presentation

Presentation PDF (833.1 kB)

2:15 PM

3A.4

The influence of the elevated mixed layer on record high temperatures and severe weather over the Northeast US in April and May 2010

Jason M. Cordeira, University at Albany/SUNY, Albany, NY; and T. J. Galarneau Jr. and L. Bosart

Recorded Presentation

2:30 PM

3A.5

Bulk Microphysical Variability of Thunderstorms in Different Climatic Regions: Comparative Predictive Skills of Melting Level, Cloud Base Temperature and Cloud Base Pressure in a Three-Dimensional Numerical Modeling Study

Robert E. Schlesinger, Univ. of Wisconsin, Madison, WI; and P. K. Wang

Presentation PDF (1.3 MB)

2:45 PM

3A.6

Impact of initial environmental velocity profiles on numerical-model-based storm-scale analyses of the 4 May 2007 Greensburg, Kansas cyclic tornadic thunderstorm

Robin L. Tanamachi, Univ. of Oklahoma, Norman, OK ; and D. C. Dowell, L. J. Wicker, H. B. Bluestein, S. J. Frasier, and K. Hardwick

Recorded Presentation

Session 3B

Mesoscale Convective Systems: The 8 May 2009 Derecho

Location: Grand Mesa Ballroom D (Hyatt Regency Tech Center)

Host: 25th Conference on Severe Local Storms

Chair: Stanley B. Trier, NCAR

1:30 PM

3B.1

The 08 May 2009 Missouri Derecho: Radar Analysis and Warning Implications over Parts of Southwest Missouri

Ron W. Przybylinski, NOAA/NWSFO, Saint Charles, MO; and J. S. Schaumann, D. T. Cramer, and N. Atkins

Recorded Presentation

Presentation PDF (2.0 MB)

1:45 PM

3B.2

Environment and early evolution of the 8 May 2009 derecho-producing convective system

Stephen F. Corfidi, NOAA/NSSL/SPC, Norman, OK; and M. C. Coniglio and J. S. Kain

Recorded Presentation

Presentation PDF (1.3 MB)

2:00 PM

3B.3

Observations and quantification of counter-rotating mesovortex couplets within the 8 May 2009 southern Missouri derecho

Angela Lese, NOAA/NWSFO, Louisville, KY; and S. M. Martinaitis

Recorded Presentation

Presentation PDF (1.1 MB)

2:15 PM

3B.4

The 8 May 2009 "Super Derecho": Analysis of a 3 km WRF-ARW realtime forecast

Morris L. Weisman, NCAR, Boulder, CO ; and C. Evans and L. Bosart

Recorded Presentation

2:30 PM

3B.5

Vortex development mechanisms associated with the 8 May 2009 Central United States derecho event

Clark Evans, University of Wisconsin-Milwaukee, Milwaukee, WI; and M. Weisman and L. Bosart

Recorded Presentation

2:45 PM

3B.6

An Examination of a Tornado Producing Supercell Behind the Leading Edge of the May 8th, 2009 Historic Wind Storm in Southern Missouri

Mark F. Britt, NOAA/NWSFO, St. Charles, MO; and R. W. Przybylinski

Recorded Presentation

Presentation PDF (2.3 MB)

Formal Poster Viewing with Coffee Break

Location: Grand Mesa Ballroom ABC (Hyatt Regency Tech Center)

Poster Session 1

Mesoscale Convective Systems Posters

Location: Grand Mesa Ballroom ABC (Hyatt Regency Tech Center)

Host: 25th Conference on Severe Local Storms

P1.1

Radar and in situ observations in a winter bow echo and associated mesovortices over the Japan Sea area

Kenichi Kusunoki, MRI, Tsukuba, Japan; and H. Inoue, K. Bessho, M. Nakazato, W. Mashiko, S. Hayashi, S. Hoshino, H. Yamauchi, T. Imai, K. Araki, T. Fukuhara, T. Shibata, Y. Hono, W. Kato, K. Adachi, and T. Takemi

P1.2

September 7, 2009 Souther South America Severe Storms Outbrake: High Resolution Simulation of Mesoscale Convective Systems

Vagner Anabor, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Su, Brazil; and E. de Lima Nascimento and E. Dal Piva

P1.3

Analysis of the 15 May 1998 Iowa/Minnesota derecho

Wesley D. Terwey, University of South Alabama, Mobile, AL; and R. A. Wade

P1.4

Damaging winds produced by cold-season quasi-linear convective systems in the southeast US: preliminary findings and planned research

Calvin Elkins, United States Air Force, Davis-Monthan AFB, AZ; and K. R. Knupp

P1.5

Examination of An Intense Wake Low Event as a Severe Local Storm

Timothy A. Coleman, Univ. of Alabama, Huntsville, AL; and K. R. Knupp

P1.6

A case study of a large-amplitude inertia-gravity wave over the Southeast

James H. Ruppert Jr., Colorado State University, Fort Collins, CO; and L. Bosart

Poster Session 2

Severe Weather Climatology Posters

Location: Grand Mesa Ballroom ABC (Hyatt Regency Tech Center)

Host: 25th Conference on Severe Local Storms

P2.1

Ranking and classifying severe weather outbreaks using multivariate indices

Chad M. Shafer, University of Oklahoma, Norman, OK ; and C. A. Doswell III

P2.2

On the use of kernel density estimation to identify severe weather events

Chad M. Shafer, University of Oklahoma, Norman, OK ; and C. A. Doswell III

P2.3

Trends in convection over the central United States

Victor A. Gensini, Northern Illinois University, DeKalb, IL; and J. M. Laflin

P2.4

Climatology of potentially severe convective environments from reanalysis

Victor A. Gensini, Northern Illinois University, DeKalb, IL; and W. S. Ashley

P2.5

Severe storm assessment using satellite data: Case studies from Iowa in 2009

Kevin Gallo, NOAA/NESDIS, Sioux Falls, SD; and K. Jungbluth and P. N. Schumacher

P2.6

Synoptic composites of tornadic and non-tornadic severe weather outbreaks

Andrew Edward Mercer, Mississippi State University, Mississippi State, MS; and C. M. Shafer, C. A. Doswell III, M. Richman, and L. M. Leslie

P2.7

Convective modes associated with significant severe thunderstorms in the contiguous United States

Bryan T. Smith, NOAA/NWS/NCEP/SPC, Norman, OK; and R. L. Thompson, J. S. Grams, and C. Broyles

Handout (2.7 MB)

P2.8

Climatologies of convective flight environments for use in the development of a storm penetrating aircraft

Shawn B. Honomichl, South Dakota School of Mines and Technology, Rapid City, SD

P2.9

Do cities encourage warm-season thunderstorm formation and intensification?

Walker S. Ashley, Northern Illinois Univ., DeKalb, IL; and M. Bentley and T. Stallins

Handout (1.1 MB)

P2.10

Environmental conditions associated with nocturnal severe weather across the northern Plains

Joshua M. Boustead, NOAA/NWS, Valley, NE; and P. N. Schumacher

Handout (162.7 kB)

P2.11

Verification of thunderstorm occurrence using the National Lightning Detection Network

P2.12

Severe wind-driven hail events: dependence on convective morphology and larger-scale environment

William A. Gallus Jr., Iowa State University, Ames, IA; and N. D. Carletta, M. A. Fowle, and D. J. Miller

Handout (2.2 MB)

P2.13

The characteristics of gusty winds in winter season in Shonai Plane, Japan

Kazuhiro Taniwaki, Meteorological Engineering Center, Inc., Osaka, Japan; and K. Sassa, T. Hayashi, Y. Hono, and K. Adachi

P2.14

Comparing Storm Data reports to National Weather Service severe storm watches and warnings

Kiel L. Ortega, Univ. of Oklahoma/CIMMS and NOAA/NSSL, Norman, OK ; and T. C. Meyer

P2.15

Simultaneous analysis of impacts of human abundance and quasi-cyclic climate conditions in tornado counts with hierarchical Bayesian models

Christopher J. Anderson, Iowa State University, Ames, IA; and C. K. Wikle and A. Arab

P2.16

An analysis of spatial tornado density: does Dixie Alley really exist?

P. Grady Dixon, Mississippi State University, Mississippi State, MS; and A. E. Mercer, J. Choi, and J. S. Allen

P2.17

Spatial Analysis of Tornado Vulnerability Trends in Oklahoma and Northern Texas

Eric M. Hout, National Weather Center Research Experiences for Undergraduates Program, Norman, OK; and M. Yuan, J. McIntosh, and C. Weaver

Handout (1.2 MB)

P2.18

Convective Mode of Thunderstorms Producing Significant Cool Season Tornadoes in the National Weather Service's Central Region

Fred H. Glass, NOAA/NWSFO, St. Charles, MO ; and M. F. Britt

Handout (567.9 kB)

P2.19

An Analysis of Clustered Tornado Events

Andrew R. Dean, NOAA/NWS/NCEP/SPC, Norman, OK

Handout (906.3 kB)

P2.20

Climate Change Impacts on Severe Thunderstorms in Finland

Poster Session 3

Tropical Severe Weather Posters

Location: Grand Mesa Ballroom ABC (Hyatt Regency Tech Center)

Host: 25th Conference on Severe Local Storms

P3.1

Tropical cyclone tornado records for the modernized National Weather Service era

Roger Edwards, SPC/NWS/NOAA, Norman, OK

Handout (406.2 kB)

P3.2

Objective environmental analyses and convective modes for U. S. tropical cyclone tornadoes from 2003–2008

Roger Edwards, SPC/NWS/NOAA, Norman, OK; and A. R. Dean, R. L. Thompson, and B. T. Smith

Handout (359.9 kB)

P3.3

A numerical investigation of supercells in landfalling tropical cyclones

Matthew J. Morin, NOAA GFDL, Princeton, NJ; and M. D. Parker, K. A. Hill, and G. M. Lackmann

Handout (946.0 kB)

P3.4

Miniature supercells in Hurricanes Gustav (2008) and Ivan (2004): Environments and cell structure

Matthew D. Eastin, University of North Carolina, Charlotte, NC

P3.5

Fine-scale radar observations of boundary layer structures in landfalling hurricanes

Karen A. Kosiba, Center for Severe Weather Research, Boulder, CO; and J. Wurman

P3.6

The role of convective organization and the low level jet in the overland reintensification of Tropical Storm Erin (2007)

Clark Evans, University of Wisconsin-Milwaukee, Milwaukee, WI; and R. S. Schumacher and T. J. Galarneau Jr.

P3.7

Hailstorm with Very Low Vertical Wind Shear and Tilt over Trivandrum

P. Kumar, MIT, Maharashtra, India

Handout (23.9 kB)

Session 4A

Supercell and Tornadoes: Tornado Structure, Dynamics, and Damage I

Location: Grand Mesa Ballroom F (Hyatt Regency Tech Center)

Host: 25th Conference on Severe Local Storms

Chair: Curtis R. Alexander, NOAA/ESRL/GSD

4:30 PM

4A.1

The Enhanced Fujita Scale: Past, present and future

Roger Edwards, SPC/NWS/NOAA, Norman, OK; and J. G. LaDue, J. T. Ferree, K. A. Scharfenberg, C. Maier, and W. L. Coulbourne

Recorded Presentation

Presentation PDF (414.2 kB)

4:45 PM

4A.2

Damage survey of the Picher, OK Tornado

Timothy P. Marshall, Haag Engineering Co., Irving, TX

Recorded Presentation

Presentation PDF (1.1 MB)

5:00 PM

4A.3

Damage surveys in the age of Google Street View and polarimetric radar—the August 20th 2009 southern Ontario tornado outbreak

Arnold Ashton, Environment Canada, Toronto, ON, Canada; and M. Leduc and S. Boodoo

Recorded Presentation

5:15 PM

4A.4

Estimation of Low-Level Wind Structures in a Tornado-like Vortex

Sean Crowell, University of Oklahoma, Norman, Oklahoma; and L. J. Wicker and L. W. White

PDF file

Presentation PDF (1.8 MB)

5:30 PM

4A.5

The detection of low-level misovortices embedded within a quasi-linear thunderstorm complex on 2 April 2010 by CASA radar

Vivek N. Mahale, Advanced Radar Research Center, Norman, OK; and J. A. Brotzge and H. B. Bluestein

Recorded Presentation

Presentation PDF (1.8 MB)

Session 4B

Forecasting Techniques and Warning Decision Making: Short-Range Forecasting I

Location: Grand Mesa Ballroom D (Hyatt Regency Tech Center)

Host: 25th Conference on Severe Local Storms

Chair: Steven J. Weiss, NOAA/NWS/NCEP/SPC

4:30 PM

4B.1

Preliminary investigation into lightning hazard prediction from high resolution model output

Stuart D. Miller Jr., CIMMS/Univ. of Oklahoma, Norman, OK; and G. W. Carbin, J. S. Kain, E. W. McCaul Jr., C. J. Melick, and A. R. Dean

Recorded Presentation

Presentation PDF (815.7 kB)

4:45 PM

4B.2

A new parameter for forecasting tornadoes in landfalling tropical cyclones

Matthew Onderlinde, Florida State University, Tallahassee, FL; and H. E. Fuelberg, S. J. Weiss, and A. I. Watson

Recorded Presentation

5:00 PM

4B.3

A Sounding Analog System to Produce Probabilistic Forecasts of Maximum Hail Size

Ryan E. D. Jewell, NOAA/NWS/NCEP/SPC, Norman, OK

Recorded Presentation

Presentation PDF (267.5 kB)

5:15 PM

4B.4

Using areal coverage of parameters favorable for severe weather to identify major convective outbreaks

Chad M. Shafer, University of Oklahoma, Norman, OK ; and L. M. Leslie, M. Richman, and C. A. Doswell III

Recorded Presentation

5:30 PM

4B.5

Forecasts, observations, and warning response for flash floods

Matthew Kelsch, UCAR/COMET, Boulder, CO; and A. Stevermer

Recorded Presentation

5:45 PM

4B.6

Severe weather outlooks and their use for damage prevention and civil protection in Finland

Ari-Juhani Punkka, Finnish Meteorological Institute, Helsinki, Finland; and J. Rauhala

Recorded Presentation

Presentation PDF (110.0 kB)

Break for Dinner

Session 5

Supercells and Tornadoes: Overview of VORTEX-2

Location: Grand Mesa Ballroom F (Hyatt Regency Tech Center)

Host: 25th Conference on Severe Local Storms

Chair: David Dowell, NCAR

7:30 PM

5.1

An overview of the VORTEX2 field campaign

Joshua Wurman, Center for Severe Weather Research, Boulder, CO; and L. J. Wicker, Y. P. Richardson, E. N. Rasmussen, P. M. Markowski, D. Dowell, D. W. Burgess, and H. B. Bluestein

Recorded Presentation

Presentation PDF (1.9 MB)

7:45 PM

5.2

Tornado and tornadogenesis events seen by the NOXP x-band, dual-polarization radar during VORTEX2 2010

Donald W. Burgess, CIMMS/Univ. of Oklahoma, Norman, OK; and E. R. Mansell, C. M. Schwarz, and B. J. Allen

Recorded Presentation

Presentation PDF (3.0 MB)

8:00 PM

5.3

Rapid-Scan DOW radar observations of tornadoes during VORTEX2

Joshua Wurman, Center for Severe Weather Research, Boulder, CO; and K. A. Kosiba and P. Robinson

8:15 PM

5.4

A summary of data collected during VORTEX-2 by MWR-05XP/TWOLF, UMass X-Pol, and the UMass W-band radar

Howard B. Bluestein, Univ. of Oklahoma, Norman, OK; and M. M. French, J. B. Houser, J. C. Snyder, R. L. Tanamachi, I. PopStefanija, C. Baldi, G. D. Emmitt, V. Venkatesh, K. Orzel, R. Bluth, and S. J. Frasier

Recorded Presentation

Presentation PDF (1.5 MB)

8:30 PM

5.5

Highlights from the Texas Tech Ka-band Mobile Doppler Radar and StickNet Data Collection During VORTEX2

Christopher C. Weiss, Texas Tech University, Lubbock, TX; and D. Dowell

Recorded Presentation

Presentation PDF (2.5 MB)

8:45 PM

5.6

Mobile soundings during VORTEX2: Survey and preliminary results

Matthew D. Parker, North Carolina State Univ., Raleigh, NC; and G. H. Bryan

Recorded Presentation

9:00 PM

5.7

Unmanned aircraft in VORTEX-2

Adam L. Houston, University of Nebraska, Lincoln, NE; and B. Argrow and E. W. Frew

Recorded Presentation

Sessions Adjourn for the Day

Welcome Reception

Location: Centennial (Hyatt Regency Tech Center)

Tue. 12 October

Session 6

Supercells and Tornadoes: 5 June 2009 Goshen, County Supercell

Location: Grand Mesa Ballroom F (Hyatt Regency Tech Center)

Host: 25th Conference on Severe Local Storms

Chair: Robert J. Trapp, Purdue University

8:00 AM

6.1

Invited Speaker—History of tornado research

Howard Bluestein, Univ. of Oklahoma, Norman, OK

Recorded Presentation

Presentation PDF (162.9 kB)

8:30 AM

6.2

The LaGrange Tornado during VORTEX2. Part I: Photogrammetry analysis of the tornado combined with single-Doppler radar data

Roger M. Wakimoto, NCAR, Boulder, CO; and N. Atkins and J. Wurman

Presentation PDF (2.8 MB)

8:45 AM

6.3

The LaGrange, WY Tornado during VORTEX II. Part II: Photogrammetric Analysis of the Tornado Combined with Dual-Doppler Radar Data

Nolan Atkins, Lyndon State College, Lyndonville, VT; and R. M. Wakimoto, T. McGee, R. Ducharme, and J. Wurman

Recorded Presentation

Presentation PDF (1.5 MB)

9:00 AM

6.4

The Goshen County, Wyoming, supercell of 5 June 2009 intercepted by VORTEX2: Tornadogenesis phase

Karen A. Kosiba, Center for Severe Weather Research, Boulder, CO; and J. Wurman, Y. P. Richardson, P. Markowski, D. C. Dowell, P. Robinson, and J. Marquis

9:15 AM

6.5

The Goshen County, Wyoming, supercell of 5 June 2009 intercepted by VORTEX2: Tornado intensification phase

Karen A. Kosiba, Center for Severe Weather Research, Boulder, CO; and J. Wurman, P. M. Markowski, Y. P. Richardson, D. Dowell, P. Robinson, and J. Marquis

9:30 AM

6.6

The Goshen County, Wyoming, supercell of 5 June 2009 intercepted by VORTEX2: Tornado dissipation phase

Yvette P. Richardson, The Pennsylvania State University, University Park, PA; and P. M. Markowski, J. Wurman, K. Kosiba, P. Robinson, and J. Marquis

Recorded Presentation

9:45 AM

6.7

Preliminary analysis of the Goshen County tornadic supercell on 5 June 2009 during VORTEX2 using EnKF assimilation of mobile radar and mesonet data

James N. Marquis, Pennsylvania State Univ., University Park, PA; and Y. Richardson, P. Markowski, D. Dowell, J. M. Wurman, K. Kosiba, and P. Robinson

Recorded Presentation

Presentation PDF (2.8 MB)

Coffee Break

Location: Grand Mesa Ballroom ABC (Hyatt Regency Tech Center)

Session 7A

Supercells and Tornadoes: Supercell Structure and Dynamics I

Location: Grand Mesa Ballroom F (Hyatt Regency Tech Center)

Host: 25th Conference on Severe Local Storms

Chair: Adam L. Houston, University of Nebraska

10:30 AM

7A.1

Characteristics of supercells simulated with tornadic and non-tornadic RUC-2 proximity soundings. Part II: Sounding variables as predictors of simulated low-level rotation

Matthew S. Gilmore, University of North Dakota, Grand Forks, ND ; and L. Burkett, R. Edwards, and R. L. Thompson

Recorded Presentation

10:45 AM

7A.2

Storm structure and decay process of the 9 June, 2009 Greensburg, KS supercell during VORTEX2

Conrad L. Ziegler, NOAA/NSSL, Norman, OK ; and M. I. Biggerstaff, L. J. Wicker, D. W. Burgess, E. R. Mansell, C. M. Schwarz, P. Markowski, Y. P. Richardson, and C. C. Weiss

Presentation PDF (1.9 MB)

11:00 AM

7A.3

Observational analysis of cyclic mesocyclogenesis during VORTEX2

Daniel P. Betten, CIMMS/Univ. of Oklahoma, Norman, OK; and M. I. Biggerstaff, C. Ziegler, K. M. Kuhlman, D. R. MacGorman, and L. J. Wicker

Recorded Presentation

11:15 AM

7A.4

Single- and dual-Doppler analyses of a tornadic supercell sampled by NWRT PAR and WSR-88D

Pamela L. Heinselman, NOAA/NSSL, Norman, OK; and C. L. Ziegler and L. R. Lemon

Recorded Presentation

11:30 AM

7A.5

Storm mergers. Part 1: Preliminary numerical investigations of merger events

Ryan M. Hastings, Pennsylvania State University, State College, PA; and Y. P. Richardson

Recorded Presentation

Presentation PDF (932.0 kB)

11:45 AM

7A.6

Numerical simulations of interactions between squall lines and supercells

Adam J. French, South Dakota School of Mines and Technology, Rapid City, SD; and M. D. Parker

Recorded Presentation

Presentation PDF (2.0 MB)

Session 7B

Forecasting Techniques and Warning Decision Making: The Hazardous Weather Testbed

Location: Grand Mesa Ballroom D (Hyatt Regency Tech Center)

Host: 25th Conference on Severe Local Storms

Chair: Kevin Scharfenberg, NOAA/NWS

10:30 AM

7B.1

An overview of the 2010 NOAA Hazardous Weather Testbed spring forecasting experiment

Steven J. Weiss, NOAA/NWS/NCEP/SPC, Norman, OK; and A. J. Clark, I. L. Jirak, C. J. Melick, C. W. Siewert, R. Sobash, P. T. Marsh, A. R. Dean, M. Xue, F. Kong, K. W. Thomas, J. Du, D. R. Novak, F. E. Barthold, M. J. Bodner, J. J. Levit, B. Entwistle, T. Jensen, J. S. Kain, M. C. Coniglio, and R. S. Schneider

Recorded Presentation

Presentation PDF (586.8 kB)

10:45 AM

7B.2

Real-time severe convective weather warning exercises at the Experimental Warning Program 2010 (EWP2010)

Gregory J. Stumpf, CIMMS/Univ. of Oklahoma and NOAA/NWS/MDL, Norman, OK; and B. C. Baranowski, D. M. Kingfield, K. M. Kuhlman, K. L. Manross, C. W. Siewert, T. M. Smith, and S. Stough

Recorded Presentation

Presentation PDF (725.2 kB)

11:00 AM

7B.3

CAPS Realtime Storm Scale Ensemble and High Resolution Forecasts for the NOAA Hazardous Weather Testbed 2010 Spring Experiment

Ming Xue, CAPS/Univ. of Oklahoma, Norman, OK ; and F. Kong, K. W. Thomas, Y. Wang, K. Brewster, J. Gao, X. Wang, S. J. Weiss, A. J. Clark, J. S. Kain, M. C. Coniglio, J. Du, T. L. Jensen, and Y. H. Kuo

Recorded Presentation

Presentation PDF (1.7 MB)

11:15 AM

7B.4

Real-time, Low-level Wind Analysis including CASA and WSR-88D Radar Data using the ARPS 3DVAR

Jidong Gao, CAPS/Univ. of Oklahoma, Norman, OK; and K. Brewster, M. Xue, J. Brotzge, K. Thomas, and Y. Wang

Presentation PDF (1.6 MB)

11:30 AM

7B.5

Neighborhood-based evaluation of WRF-ARW precipitation forecasts for the 2010 NOAA Hazardous Weather Testbed Spring Experiment

Kevin W. Manning, NCAR, Boulder, CO; and M. L. Weisman and A. J. Clark

Recorded Presentation

11:45 AM

7B.6

James J. Gurka, GSFC, Greenbelt, MD; and S. J. Goodman, T. J. Schmit, C. W. Siewert, M. DeMaria, and G. T. Stano

Recorded Presentation

Break for Lunch

Session 8A

Supercells and Tornadoes: Downdrafts and Cold Pool

Location: Grand Mesa Ballroom F (Hyatt Regency Tech Center)

Host: 25th Conference on Severe Local Storms

Chair: Matthew S. Gilmore, University of North Dakota

1:30 PM

8A.1

Rear-flank downdraft dynamics in tornadic and non-tornadic supercell thunderstorms

Michael I. Biggerstaff, Univ. of Oklahoma, Norman, OK; and D. P. Betten, C. L. Ziegler, D. R. MacGorman, L. J. Wicker, D. W. Burgess, and E. R. Mansell

Recorded Presentation

1:45 PM

8A.2

Mobile mesonet observations of the rear-flank downdraft evolution associated with a violent tornado near Bowdle, SD on 22 May 2010

Catherine A. Finley, WindLogics Inc., Grand Rapids, MN; and B. D. Lee, M. Grzych, C. D. Karstens, and T. M. Samaras

Recorded Presentation

Presentation PDF (888.6 kB)

2:00 PM

8A.3

Thermodynamic and Kinematic Analysis of Supercells using High Resolution In Situ Data from Texas Tech StickNet Instrument Systems

Bradley R. Charboneau, Texas Tech University, Lubbock, TX; and C. C. Weiss

Recorded Presentation

Presentation PDF (1.9 MB)

2:15 PM

8A.4

A preliminary survey of DSD measurements collected during VORTEX2

Daniel T. Dawson II, CIMMS/Univ. of Oklahoma and NOAA/NSSL, Norman, OK; and G. Romine

Recorded Presentation

Presentation PDF (2.2 MB)

2:30 PM

8A.5

Verification of Supercell Cold Pools in High-Resolution WRF Simulations using StickNet In Situ Data

Anthony E. Reinhart, Texas Tech University, Lubbock, TX; and C. C. Weiss and D. C. Dowell

Recorded Presentation

Presentation PDF (2.5 MB)

2:45 PM

8A.6

Mesocyclone and RFD evolution in simulated supercell storms with varying wind profiles

Matthew S. Van Den Broeke, University of Nebraska-Lincoln, Lincoln, NE; and J. M. Straka

Recorded Presentation

Presentation PDF (1.7 MB)

Session 8B

Forecasting Techniques and Warning Decision Making: Nowcasting, Warning, and Verification

Location: Grand Mesa Ballroom D (Hyatt Regency Tech Center)

Host: 25th Conference on Severe Local Storms

Chair: Roger Edwards, SPC/NWS/NOAA

1:30 PM

8B.1

A realtime weather-adaptive 3DVAR analysis system with automatic storm positioning and on-demand capability

David J. Stensrud, NOAA/NSSL, Norman, OK; and J. Gao, T. M. Smith, K. Manross, J. Brogden, and V. Lakshmanan

Recorded Presentation

1:45 PM

8B.2

iCAST: A severe storm nowcasting prototype focused on optimization of the human-machine mix

David Sills, EC, Toronto, ON, Canada; and N. Driedger, B. Greaves, E. Hung, and R. Paterson

Recorded Presentation

2:00 PM

8B.3

Storm-based convective warning best practices

Kevin A. Scharfenberg, NOAA/NWS, Norman, OK ; and J. T. Ferree

Recorded Presentation

2:15 PM

8B.4

Analysis of cell mergers leading to tornadogenesis using 3D rendered radar imagery

Ray A. Wolf, NOAA/NWS, Davenport, IA

Recorded Presentation

Presentation PDF (934.1 kB)

2:30 PM

8B.5

Weather decision support and societal impacts at a large outdoor venue—a case study from the 2010 Beale Street Music Festival

Jon W. Zeitler, NOAA/NWS, New Braunfels, TX; and R. Okulski and J. Howell

Recorded Presentation

Presentation PDF (80.8 kB)

2:45 PM

8B.6

A detailed analysis of SPC “High Risk” outlooks, 2003–2009

Jason M. Davis, Valparaiso University, Valparaiso, IN; and A. R. Dean and J. L. Guyer

Recorded Presentation

Presentation PDF (135.0 kB)

Formal Poster Viewing with Coffee Break

Location: Grand Mesa Ballroom ABC (Hyatt Regency Tech Center)

Poster Session 4

Forecasting Techniques and Warning Decision Making Posters I

Location: Grand Mesa Ballroom ABC (Hyatt Regency Tech Center)

Host: 25th Conference on Severe Local Storms

P4.1

Using artificial intelligence to predict Mississippi lightning

Andrew Edward Mercer, Mississippi State University, Mississippi State, MS; and M. E. Brown and C. Babineaux

P4.2

Use and Evaluation of Lightning Data within 2010 Experimental Warning Program and GOES-R Proving Ground

Kristin M. Kuhlman, University of Oklahoma, Norman, OK; and D. M. Kingfield, G. T. Stano, E. C. Bruning, B. C. Baranowski, and C. W. Siewert

Handout (1.7 MB)

P4.3

Application of WRF-based forecasts of total lightning threat to the CONUS

Eugene W. McCaul Jr., USRA, Huntsville, AL ; and J. L. Case and S. J. Goodman

Handout (274.0 kB)

P4.4

A multi-tiered verification of SPC tornado watches

Aaron Christenberry, University of Oklahoma, Norman, OK; and A. L. Lamers, B. A. Mejia, A. R. Dean, and S. J. Weiss

Handout (234.3 kB)

P4.5

Tornado warning services for misoscale circulations in quasilinear convective systems

Kevin A. Scharfenberg, NOAA/NWS, Norman, OK ; and D. L. Andra Jr., P. Marsh, K. L. Ortega, and J. A. Brotzge

Handout (304.0 kB)

P4.6

Numerical modeling of maximum hail in deep convection

Gerhard W. Reuter, University of Alberta, Edmonton, AB, Canada; and F. Jia

P4.7

A statistical hail prediction product

Daniel T. Lindsey, NOAA/NESDIS, Fort Collins, CO

P4.8

WSR-88D Signatures associated with One Inch Hail in the Southern Plains

Dennis E. Cavanaugh, NOAA/NWS, Fort Worth, TX; and J. A. Schultz

Handout (392.1 kB)

P4.9

Severe hail impacts and preparedness

Jari-Petteri Tuovinen, Finnish Meteorological Institute, Helsinki, Finland; and J. Rauhala

Handout (495.9 kB)

P4.10

Reevaluation of a technique for radar identification of large hail in western and central Wyoming

Brett E. McDonald, NOAA/NWSFO, Riverton, WY; and C. N. Jones

P4.11

Using Doppler radar to more accurately predict the occurrence of severe hail in the Arkansas-Louisiana-Texas region

P4.12

Examining radar 'side-lobe spikes' for severe hail identification

Kevin L. Manross, CIMMS/Univ. of Oklahoma and NOAA/NSSL, Norman, OK; and K. L. Ortega and A. E. Pietrycha

Handout (1017.7 kB)

P4.13

Evaluating the use of reflectivity heights for hail detection with high-resolution hail reports

Kiel L. Ortega, Univ. of Oklahoma/CIMMS and NOAA/NSSL, Norman, OK

P4.14

Tornadoes in close proximity to a major winter storm event over East Central Colorado

Stephen J. Hodanish, NOAA/NWS, Pueblo, CO

Handout (855.7 kB)

P4.15

A storm-scale analysis of the 16 June 2008 significant severe weather event across New York and Western New England

Thomas A. Wasula, NOAA/NWS, Albany, NY

Handout (2.1 MB)

P4.16

Observations of haboobs associated with mesoscale convective vortices

Joseph W. Jurecka, NOAA/NWSFO, Lubbock, TX; and T. T. Lindley

Handout (594.4 kB)

P4.17

Severe Thunderstorm Wind Damage Societal Impacts and Preparedness

Jenni Rauhala, Finnish Meteorological Institute, Helsinki, Finland

Handout (652.2 kB)

P4.18

Evaluation of CAPS multi-model storm-scale ensemble forecast for the NOAA HWT 2010 Spring Experiment

Fanyou Kong, CAPS/Univ. of Oklahoma, Norman, OK; and M. Xue, K. W. Thomas, Y. Wang, K. Brewster, X. Wang, J. Gao, S. J. Weiss, A. Clark, J. S. Kain, M. C. Coniglio, and J. Du

P4.19

GEM LAM Convective Forecasts: How Can they be used in an Operational Forecast Environment?

Heather Rombough, EC, Edmonton, AB, Canada; and H. Greene, B. Niska-Aro, B. Power, D. Schmidt, O. Stachowiak, C. Wielki, and A. Yun

Handout (1.9 MB)

P4.20

Characteristics and Estimated Warning Success Rates of QLCS and Supercell-Produced Significant Tornadoes in the Southeast United States

Steven E. Nelson, NOAA/NWS, Peachtree City, GA; and G. D. Combs

Poster Session 5

Novel Instrumentation and Data Processing Techniques Posters

Location: Grand Mesa Ballroom ABC (Hyatt Regency Tech Center)

Host: 25th Conference on Severe Local Storms

P5.1

Intercomparison between Mobile and Stationary Surface Observing Platforms in VORTEX2

Patrick S. Skinner, Texas Tech University, Lubbock, TX; and C. C. Weiss, P. M. Markowski, and Y. P. Richardson

Handout (875.9 kB)

P5.2

An Improved Aspirated Temperature System for Mobile Meteorological Observations, Especially in Severe Weather

Sean Waugh, University of Oklahoma, Norman, OK; and S. E. Fredrickson

P5.3

Potential pitfalls in mobile dual-Doppler analyses of complex severe storm wind fields

Yvette Richardson, Pennsylvania State University, University Park, PA; and J. Marquis, J. Wurman, and P. M. Markowski

P5.4

Effects of radar range and azimuthal resolution on tornadic shear signatures: applications to a tornado detection algorithm

Jennifer F. Newman, University of Oklahoma, Norman, OK; and V. Lakshmanan, P. L. Heinselman, and T. M. Smith

Handout (1.1 MB)

P5.5

Evaluation of the Vortex Detection and Characterization (VDAC) technique using multiple-Doppler observations of tornadoes and low-level mesocyclones

Corey K. Potvin, University of Oklahoma, Norman, OK; and A. Shapiro

Handout (61.8 kB)

P5.6

A technique for automated selection of multiple Z-R relationships within a single domain

George Limpert, University of Nebraska, Lincoln, NE; and A. L. Houston

Handout (187.3 kB)

P5.7

A survey of real-time 3DVAR analyses conducted during the 2010 Experimental Warning Program spring experiment

Travis M. Smith, CIMMS/Univ. of Oklahoma and NOAA/NSSL, Norman, OK; and K. M. Kuhlman, K. L. Ortega, K. L. Manross, D. W. Burgess, J. Gao, and D. J. Stensrud

Handout (2.3 MB)

P5.8

A new tornado simulator reproducing flow fields under supercell

Koji Sassa, Kochi University, Kochi, Japan; and S. Takemura and A. Yamasaki

Handout (2.6 MB)

P5.9

Wind measurements within a tornado core

Tim M. Samaras, National Technical Systems, Littleton, CO; and C. D. Karstens, B. D. Lee, and C. A. Finley

P5.10

An overview of the Shonai Area Railroad Weather Project—Toward an automatic hazardous wind alert system for railroad

Kenichi Kusunoki, MRI, Tsukuba, Japan; and K. Bessho, M. Nakazato, W. Mashiko, S. Hayashi, S. Hoshino, H. Inoue, H. Yamauchi, I. Toshiaki, K. Araki, T. Fukuhara, T. Shibata, H. Yoshihiro, W. Kato, K. Adachi, and T. Takemi

Poster Session 6

Supercells and Tornadoes Posters I

Location: Grand Mesa Ballroom ABC (Hyatt Regency Tech Center)

Host: 25th Conference on Severe Local Storms

P6.1

Verification of the origin of rotation in tornadoes experiment, part 2 (VORTEX2): data from the NOAA (NSSL) x-band dual-polarized radar

Christopher M. Schwarz, WDT, Norman, OK; and D. W. Burgess

Handout (2.0 MB)

P6.2

Highlights of the storm-scale radar data from VORTEX2—2010

Therese E. Thompson, Univ. of Oklahoma, Norman, OK; and M. I. Biggerstaff, L. J. Wicker, D. P. Betten, C. L. Ziegler, and M. R. Kumjian

Handout (1.1 MB)

P6.3

GPS-Based Stereo Photogrammetry in VORTEX2

Michael A. Magsig, NOAA/NWS/Warning Decision Training Branch, Norman, OK; and J. G. LaDue, E. N. Rasmussen, and J. M. Straka

Handout (525.5 kB)

P6.4

Mobile mesonet observations during VORTEX2

Yvette P. Richardson, Pennsylvania State University, University Park, PA; and P. M. Markowski, S. Waugh, and S. E. Fredrickson

Handout (1.3 MB)

P6.5

VORTEX 2 operations center: Bridging the gap between research and operations

Patrick T. Marsh, NOAA/NSSL & OU/CIMMS/SoM, Norman, OK; and K. Scharfenberg, K. Kelleher, M. C. Coniglio, L. J. Wicker, J. K. Purpura, M. J. Hudson, and S. R. Cobb

P6.6

One-minute GOES observations during VORTEX II

P6.6

The Goshen County, Wyoming, supercell of 5 June 2009 intercepted by VORTEX2: Pretornadic phase

Paul M. Markowski, Penn State University, University Park, PA; and Y. Richardson, J. Wurman, K. A. Kosiba, and P. Robinson

Handout (1.9 MB)

P6.7

A cost-effective photogrammetric and surface data collection research project from 2009-2010 with an emphasis on the 5 June 2009 LaGrange, WY tornado

Daniel R. Cheresnick, Self-Employed, Longmont, CO

P6.8

New quantification of hodograph shape in nocturnal tornadic environments and its application to forecasting

Amanda K. Kis, University of Oklahoma, Norman, OK; and J. Straka

Handout (1.7 MB)

P6.9

Synoptic, meso, and storm-scale conditions associated with strong-to-violent nocturnal tornadoes

L. J. Reames, University of Oklahoma, Norman, OK; and J. M. Straka

Session 9

Numerical Weather Prediction: Overview of Modeling/Assimilation Systems

Location: Grand Mesa Ballroom F (Hyatt Regency Tech Center)

Host: 25th Conference on Severe Local Storms

Chair: George H. Bryan, NCAR

4:30 PM

9.1

Invited Speaker - History of modeling-based research on severe storms

Morris Weisman, NCAR, Boulder, CO

Recorded Presentation

5:00 PM

9.2

High resolution rapid refresh (HRRR): Recent enhancements and evaluation during the 2010 convective season

Curtis R. Alexander, NOAA/ESRL/GSD and CIRES / Univ. of Colorado, Boulder, CO; and S. S. Weygandt, T. G. Smirnova, S. Benjamin, P. Hofmann, E. P. James, and D. A. Koch

Recorded Presentation

5:15 PM

9.3

Storm forecasts in a convective-scale ensemble system at the Met Office

Giovanni Leoncini, Met Office, Reading, Berks., United Kingdom; and N. Roberts

Recorded Presentation

Presentation PDF (538.7 kB)

5:30 PM

9.4

A Nowcasting System Using Full Physics Numerical Weather Prediction Initialized with CASA and NEXRAD Radar Data

Keith A. Brewster, CAPS/Univ. of Oklahoma, Norman, OK; and K. W. Thomas, J. Gao, J. Brotzge, M. Xue, and Y. Wang

Recorded Presentation

Presentation PDF (704.9 kB)

5:45 PM

9.5

Ensemble storm-scale data assimilation and prediction for severe convective storms

David Dowell, NCAR, Boulder, CO; and G. Romine and C. Snyder

Recorded Presentation

Presentation PDF (1.4 MB)

6:00 PM

9.6

Application of a WRF mesoscale ensemble data assimilation system to severe weather events during springs 2007–2009

Dustan M. Wheatley, CIMMS, Univ. of Oklahoma, NOAA/NSSL, Norman, OK; and D. J. Stensrud

Recorded Presentation

Sessions Adjourn for the Day

Storm Video Night I

Location: Grand Mesa Ballroom F (Hyatt Regency Tech Center)

Wed. 13 October

Session 10

Mesoscale Convective Systems: Interaction with Land Surface and Environment

Location: Grand Mesa Ballroom F (Hyatt Regency Tech Center)

Host: 25th Conference on Severe Local Storms

Chair: Michael I. Biggerstaff, Univ. of Oklahoma

8:15 AM

10.1

Invited Speaker - History of MCS research

Richard Johnson, Colorado State University, Fort Collins, CO

Recorded Presentation

8:45 AM

10.2

Environmental factors in the upscale growth and longevity of MCSs derived from Rapid Update Cycle analyses

Michael C. Coniglio, NOAA/NSSL, Norman, OK; and J. Hwang and D. J. Stensrud

Recorded Presentation

9:00 AM

10.3

The effects of Lake Michigan on mature mesoscale convective systems

Nicholas D. Metz, Univ. at Albany/SUNY, Albany, NY; and L. Bosart

Recorded Presentation

9:15 AM

10.4

MCS organization and development along land/lake-induced thermodynamic boundaries near the Great Lakes

Alan F. Srock, University at Albany/SUNY, Albany, NY; and L. Bosart

Recorded Presentation

9:30 AM

10.5

An Investigation into a Squall Line over Complex Terrain

Rodger Wu, EC, Vancouver, BC, Canada; and B. Snyder and J. Goosen

Recorded Presentation

Presentation PDF (1.4 MB)

9:45 AM

10.6

Simulated squall lines with and without cloud shading effects

Andrew Oberthaler, Pennsylvania State University, University Park, PA; and P. M. Markowski

Recorded Presentation

Presentation PDF (2.1 MB)

Coffee Break

Location: Grand Mesa Ballroom ABC (Hyatt Regency Tech Center)

Session 11

Forecasting Techniques and Warning Decision Making: Advances in the Use of Radar, Satellite, and Lightning Data

Location: Grand Mesa Ballroom F (Hyatt Regency Tech Center)

Host: 25th Conference on Severe Local Storms

Chair: Kristin M. Kuhlman, University of Oklahoma

10:30 AM

11.1

Detecting boundary layer moisture convergence with GOES-R ABI bands

Lewis Grasso, CIRA/Colorado State Univ., Fort Collins, CO; and D. T. Lindsey and W. M. MacKenzie Jr.

10:45 AM

11.2

Polarimetric radar characteristics of large hail

Matthew R. Kumjian, CIMMS/Univ. of Oklahoma and NOAA/NSSL, Norman, OK ; and J. C. Picca, S. Ganson, A. V. Ryzhkov, J. Krause, and A. P. Khain

Recorded Presentation

Presentation PDF (2.9 MB)

11:00 AM

11.3

Z_DR columns as a predictive tool for hail growth and storm evolution

Joseph C. Picca, CIMMS/Univ. of Oklahoma, Norman, OK; and A. V. Ryzhkov

Recorded Presentation

Presentation PDF (212.6 kB)

11:15 AM

11.4

An operational assessment of the predictability of giant hail events

Scott F. Blair, NOAA/NWS, Pleasant Hill, MO; and D. R. Deroche, J. M. Boustead, J. W. Leighton, B. L. Barjenbruch, and W. P. Gargan

Recorded Presentation

11:30 AM

11.5

Total lightning trend analysis of low-topped supercells across the Tennessee Valley

Christopher J. Schultz, Univ. of Alabama, Huntsville, AL; and W. A. Petersen and L. Carey

Recorded Presentation

11:45 AM

11.6

Dual-Doppler wind analysis using the vertical vorticity equation: Tests with real and simulated supercell data

Corey K. Potvin, University of Oklahoma, Norman, OK; and A. Shapiro

Recorded Presentation

Presentation PDF (986.5 kB)

Break for Lunch

Session 12A

Severe Weather Climatology II

Location: Grand Mesa Ballroom F (Hyatt Regency Tech Center)

Host: 25th Conference on Severe Local Storms

Chair: Clark Evans, University of Wisconsin-Milwaukee

1:30 PM

12A.1

Invited Speaker—State of the science on climate change and severe weather

Harold Brooks, OAR/NSSL, Norman, OK

Recorded Presentation

2:00 PM

12A.2

Synoptic Climatology of Tornado Environments in Finland

Jenni Rauhala, Finnish Meteorological Institute, Helsinki, Finland; and D. M. Schultz

Recorded Presentation

Presentation PDF (461.8 kB)

2:15 PM

12A.3

Enlarging the severe-hail database in Finland by using a radar-based hail-detection algorithm and e-mail surveys

Jari-Petteri Tuovinen, Finnish Meteorological Institute, Helsinki, Finland; and D. M. Schultz

Recorded Presentation

2:30 PM

12A.4

Severe storm environments on different continents

Daniel J. Cecil, University of Alabama, Huntsville, AL; and M. O. Felix and C. B. Blankenship

Recorded Presentation

Presentation PDF (2.5 MB)

2:45 PM

12A.5

A 12-year climatology of severe weather parameters and associated synoptic patterns for subtropical South America

Ernani L. Nascimento, Universidade Federal de Santa Maria, Santa Maria, Brazil; and M. Foss

Recorded Presentation

Presentation PDF (2.4 MB)

3:00 PM

12A.6

Relationships between tropical systems and rainfall in the Baja California Peninsula, Mexico

Luis M. Farfán, CICESE, Unidad La Paz, La Paz, Mexico

Recorded Presentation

Handout (181.9 kB)

Presentation PDF (588.5 kB)

Session 12B

Numerical Weather Prediction: Data assimilation, Ensemble Initialization, and Microphysics

Location: Grand Mesa Ballroom D (Hyatt Regency Tech Center)

Host: 25th Conference on Severe Local Storms

Chair: Glen Romine, NCAR

2:00 PM

12B.1

Object-oriented clustering analysis of CAPS convective scale ensemble forecasts for the NOAA Hazardous Weather Testbed Spring Experiment: A first step toward optimal ensemble configuration for convective scale probabilistic forecasting

Aaron T. Johnson, University of Oklahoma, Norman, OK; and X. Wang, F. Kong, and M. Xue

Recorded Presentation

Presentation PDF (719.5 kB)

2:15 PM

Development of a Hybrid Ensemble and Variational method for Storm Scale

Jidong Gao, CAPS/Univ. of Oklahoma, Norman, OK; and M. Xue and D. J. Stensrud

Recorded Presentation

12B.2

Improving hail prediction with a new triple-moment hail microphysics scheme

2:45 PM

12B.4

Probabilistic precipitation forecast skill as a function of ensemble size and spatial scale in a convection-allowing ensemble

Adam J. Clark, NOAA/NSSL/CIMMS, Norman, OK; and M. Xue, F. Kong, K. Thomas, Y. Wang, K. Brewster, J. Gao, K. K. Droegemeier, J. S. Kain, S. J. Weiss, D. Bright, M. C. Coniglio, and J. Du

Recorded Presentation

Presentation PDF (304.0 kB)

12B.3

Comparison of severe weather guidance derived from single and double moment configurations of a microphysical parameterization in daily forecasts with the WRF model

3:15 PM

12B.5

High-resolution storm-scale numerical weather prediction using EnKF for the 8 May 2003 Moore Oklahoma tornadic supercell

Louis J. Wicker, NOAA/NSSL, Norman, OK ; and E. R. Mansell, D. C. Dowell, and D. T. Dawson II

3:30 PM

12B.6

EnKF analyses of two tornadic supercells using rapid-scan phased array radar data

Therese E. Thompson, Univ. of Oklahoma, Norman, OK; and L. J. Wicker, P. L. Heinselman, and C. L. Ziegler

Recorded Presentation

Formal Poster Viewing with Coffee Break

Location: Grand Mesa Ballroom ABC (Hyatt Regency Tech Center)

Poster Session 7

Numerical Weather Prediction Posters

Location: Grand Mesa Ballroom ABC (Hyatt Regency Tech Center)

Host: 25th Conference on Severe Local Storms

P7.1

How midlevel horizontal humidity gradients affect simulated storm morphology

Matthew J. Bunkers, NWSFO, Rapid City, SD

Handout (2.5 MB)

P7.2

Three-dimensional Analyses of Several Thunderstorm Cases Observed using Hunan's Regional Radar Network

Chenghao Fu, NOAA/NSSL, Norman, OK, China; and J. Gao, Z. Li, C. Ye, L. Xu, and M. Xue

Handout (317.6 kB)

P7.3

Impact of Assimilating Radar Observations on Storm-scale EnKF System within Realistic Mesoscale Environment

Nusrat Yussouf, CIMMS/Univ. of Oklahoma, Norman, OK; and D. Wheatley and D. Stensrud

P7.4

The Development of a Hybrid 3DVAR-EnKF Algorithm for Storm-scale Data Assimilation

Jidong Gao, CAPS/Univ. of Oklahoma, Norman, OK; and M. Xue and D. J. Stensrud

Handout (614.6 kB)

P7.5

Simulating GOES-R satellite imagery from WRF output

Daniel T. Lindsey, NOAA/NESDIS, Fort Collins, CO; and L. Grasso, J. Sieglaff, J. A. Otkin, R. M. Rabin, and J. S. Kain

P7.6

A comparison of the structural evolution and microphysical state of a forecasted MCS using a single and two-moment microphysics scheme

Bryan J. Putnam, CAPS/Univ. of Oklahoma, Norman, OK; and M. Xue, G. Zhang, Y. Jung, N. Snook, and A. D. Schenkman

Handout (1.8 MB)

P7.7

Impacts of varying the integration depth on performance of updraft helicity as numerical guidance for severe thunderstorms forecasting

Stacey M. Hitchcock, University of Oklahoma, Norman, OK; and P. T. Marsh and H. Brooks

P7.8

A proposed methodology for model-based feature-specific prediction designed for high impact weather

Jacob R. Carley, Purdue University, West Lafayette, IN; and B. R. J. Schwedler, M. E. Baldwin, R. J. Trapp, J. Kwiatkowski, J. Logsdon, and S. J. Weiss

P7.9

Spatial verification of convective systems during the Hazardous Weather Testbed 2010 Spring Experiment

Michelle Harrold, NCAR, Boulder, CO; and T. L. Jensen, B. G. Brown, S. J. Weiss, P. T. Marsh, M. Xue, F. Kong, A. Clark, K. W. Thomas, J. S. Kain, M. C. Coniglio, and R. Schneider

P7.10

Verification of probablistic forecasts for severe weather parameters in the 2010 Storm-Scale Ensemble Forecast System and the operational SREF system

Adam J. Clark, NOAA/NSSL/CIMMS, Norman, OK; and M. Xue, F. Kong, K. W. Thomas, Y. Wang, K. Brewster, X. Wang, S. J. Weiss, I. L. Jirak, C. J. Melick, P. T. Marsh, J. S. Kain, M. C. Coniglio, and J. Du

P7.11

A New Lightning Parameterization and its Implementation in a Weather Prediction Model

Johannes Dahl, North Carolina State University, 27695-8208, NC; and H. Hoeller and U. Schumann

Handout (2.0 MB)

Poster Session 8

Supercells and Tornadoes Posters II

Location: Grand Mesa Ballroom ABC (Hyatt Regency Tech Center)

Host: 25th Conference on Severe Local Storms

P8.1

An examination of environmental parameters and radar evolution associated with tornadic supercells in south-central Nebraska on 15 June and 17 June 2009

Jeremy J. Wesely, NOAA/NWS, Hastings, NE; and R. D. Pfannkuch

P8.2

Preliminary analysis of a winter tornadic storm observed with radar and in situ instrumentation

Kenichi Kusunoki, MRI, Tsukuba, Japan; and H. Inoue, K. Bessho, M. Nakazato, W. Mashiko, S. Hayashi, S. Hoshino, H. Yamauchi, T. Imai, K. Araki, T. Fukuhara, T. Shibata, Y. Hono, W. Kato, K. Adachi, and T. Takemi

P8.3

The Vertical Structures within a winter tornadic storm during landfall over the Japan Sea area

Kenichi Kusunoki, MRI, Tsukuba, Japan; and H. Inoue, K. Bessho, M. Nakazato, W. Mashiko, S. Hayashi, S. Hoshino, H. Yamauchi, T. Imai, K. Araki, T. Fukuhara, T. Shibata, Y. Hono, W. Kato, K. Adachi, and T. Takemi

P8.4

High-resolution OU-PRIME radar observations of a prolific tornado-producing supercell on 10 May 2010

David Bodine, University of Oklahoma, Norman, OK; and R. D. Palmer, M. R. Kumjian, and A. V. Ryzhkov

Handout (1.7 MB)

P8.5

Microphysical characteristics in supercell thunderstorms using mobile dual-polarization radars and mobile disdrometers

Katja Friedrich, University of Colorado, Boulder, CO; and F. Masters, J. Wurman, and D. W. Burgess

P8.6

A multiple-wavelength polarimetric analysis of the 16 May 2010 Oklahoma City hailstorm

Joseph C. Picca, CIMMS/Univ. of Oklahoma, Norman, OK; and A. V. Ryzhkov

Handout (1.3 MB)

P8.7

Polarimetric radar characteristics of a supercell hailstorm on 10 May 2010 in central Oklahoma

Clark D. Payne, CIMMS/Univ. of Oklahoma, Norman, OK; and C. A. Van Den Broeke, L. R. Lemon, and P. T. Schlatter

Handout (952.9 kB)

P8.8

The structure and time evolution of polarimetric signatures in severe convective storms based on high-resolution numerical simulations and data from a mobile, dual-polarized, X-band Doppler radar

Jeffrey C. Snyder, University of Oklahoma, Norman, OK; and H. B. Bluestein, Y. Jung, S. J. Frasier, and V. Venkatesh

Handout (2.1 MB)

P8.9

Supercell Dissipation Observed by VORTEX2 on 9 June 2009 and its Impact on the Understanding of Storm Demise

Casey E. Letkewicz, North Carolina State University, Raleigh, NC; and M. D. Parker

Handout (2.3 MB)

P8.10

An examination of varying supercell environments over the complex terrain of the eastern Tennessee River Valley

David M. Gaffin, NOAA/NWSFO, Morristown, TN; and D. G. Hotz

Handout (2.9 MB)

P8.11

Mesoscale environments and radar characteristics of three late evening Appalachian tornadic supercells in early May 2009

P8.12

The Effects of Topography and Friction on Mesocyclones and Tornadoes

Timothy A. Coleman, Univ. of Alabama, Huntsville, AL

P8.13

The 17 June 2010 Minnesota Tornado Outbreak: A Brief Event Overview and Historical Perspective

Thomas R. Hultquist, NOAA/NWS, Chanhassen, MN; and D. J. Miller, B. Bramer, M. Friedlein, T. Krause, A. Graning, A. Lamers, G. Gust, and D. Kellenbenz

P8.14

Classic and HP mini-supercells in southeast Oregon and southwest Idaho on 3 May 2009

Stephen S. Parker, NOAA/NWSFO, Boise, ID

Handout (2.4 MB)

P8.15

Simulations of the supercell outbreak of 18 March 1925

Melissa E. Becker, University of North Dakota, Grand Forks, ND ; and M. S. Gilmore, J. Naylor, J. K. Weber, R. A. Maddox, G. P. Compo, J. S. Whitaker, and T. M. Hamill

Handout (1.2 MB)

P8.16

Storm mergers. Part 2: Observations of merger events from VORTEX2

Ryan M. Hastings, Pennsylvania State University, State College, PA; and Y. P. Richardson, P. M. Markowski, and J. Wurman

Handout (196.2 kB)

P8.17

Impacts of Cell Interaction on Storm Intensification: A Dynamical and Microphysical Perspective

Ann Syrowski, University of Illinois, Urbana, IL; and B. F. Jewett and R. B. Wilhelmson

P8.18

Evolution of the 4 May 2007 Greensburg, Kansas tornadic supercell storm as inferred from mobile, X-band Doppler radar observations

Robin L. Tanamachi, Univ. of Oklahoma, Norman, OK ; and H. B. Bluestein, S. J. Frasier, and K. Hardwick

P8.19

Low-level mesocyclogenesis in the presence of increasing low-level atmospheric stability

Kent H. Knopfmeier, CIMMS/Univ. of Oklahoma/NSSL, Norman, OK; and D. J. Stensrud

P8.20

Super Tuesday storm variability

Todd A. Murphy, University of Alabama, Huntsville, AL; and K. Knupp

P8.21

Dual-Doppler Wind Analysis of Low-level Mesocyclones Verified against StickNet Wind Observations

P8.22

The role of boundary interaction and augmented low level shear in the formation of a supercell in an otherwise “hostile” deep layer shear environment: Denver Interntional Airport Supercell of 24 May 2009

P8.22

Initiation and modulation of severe storms along warm fronts

Brian F. Jewett, Univ. of Illinois, Urbana, IL; and R. B. Wilhelmson

P8.23

Characteristics of supercells simulated with tornadic and non-tornadic RUC-2 proximity soundings. Part I: Sensitivity to convective initiation mechanisms

Lawrence Burkett, University of North Dakota, Grand Forks, ND; and M. S. Gilmore, R. L. Thompson, R. Edwards, J. M. Straka, and R. B. Wilhelmson

P8.24

The 21 January Huntsville tornado: Storm and mesoscale characteristics inferred from combined high-resolution dual-polarization radar data and video images

Kevin R. Knupp, Univ. of Alabama, Huntsville, AL; and T. Coleman and E. W. McCaul Jr.

P8.25

Precipitation characteristics of supercell hook echoes

Matthew R. Kumjian, CIMMS/Univ. of Oklahoma and NOAA/NSSL, Norman, OK ; and A. V. Ryzhkov

Handout (2.7 MB)

P8.26

Two record breaking Australian hailstorms: storm environments, damage characteristics and rarity

Bruce William Buckley, Insurance Australia Group, Sydney, Australia; and W. Sullivan, P. Chan, and M. Leplastrier

Handout (2.2 MB)

P8.27

Surface observations of the rear-flank downdraft evolution associated with the Aurora, NE tornado of 17 June 2009

Bruce D. Lee, High Impact Weather Research & Consulting, LLC, Grand Rapids, MN; and C. A. Finley, C. D. Karstens, and T. M. Samaras

Handout (1.6 MB)

P8.28

(Formerly P10.1) Possible impacts of the Enhanced Fujita Scale on United States tornado data

Roger Edwards, SPC/NWS/NOAA, Norman, OK; and H. E. Brooks

Handout (144.8 kB)

Sessions Adjourn for the Day

Depart for Off-Site Dinner Event

Thu. 14 October

Session 13A

Supercells and Tornadoes: Supercell Structure and Dynamics II

Location: Grand Mesa Ballroom F (Hyatt Regency Tech Center)

Host: 25th Conference on Severe Local Storms

Cochairs: Karen A. Kosiba, Center for Severe Weather Research; Therese E. Thompson, Univ. of Oklahoma

8:00 AM

13A.1

Invited Speaker—Future of severe storm research

Roger M. Wakimoto, NCAR, Boulder, CO

Recorded Presentation

8:30 AM

13A.2

Numerical Simulation of Infrasound Generated by Severe Storms

David A. Schecter, NorthWest Research Associates, Redmond, WA; and M. E. Nicholls

Recorded Presentation

8:45 AM

13A.3

Simulating supercell thunderstorms in a horizontally heterogeneous convective boundary layer

Christopher J. Nowotarski, Pennsylvania State University, University Park, PA; and P. M. Markowski, Y. P. Richardson, and G. H. Bryan

Recorded Presentation

Presentation PDF (2.7 MB)

9:00 AM

13A.4

Doppler lidar observations of the boundary layer near tornadic and non-tornadic supercells

Jana B. Houser, Univ. of Oklahoma, Norman, OK; and H. Bluestein, G. D. Emmitt, and R. Bluth

Recorded Presentation

13A.5

Examination of the low level polarimetric radar parameters associated with the August 20 2009 southern Ontario tornadic supercells

9:30 AM

13A.6

Intercomparison between the observed and modeled 21 January 2010 low topped tornado producing thunderstorm in Huntsville, AL

Elise V. Schultz, Univ. of Alabama, Huntsville, AL; and C. Kirkpatrick, U. S. Nair, C. J. Schultz, K. Knupp, W. A. Petersen, and L. D. Carey

Recorded Presentation

Presentation PDF (2.1 MB)

9:45 AM

13A.7

Electrification and Lightning in Simulations of the 29 May 2004 Geary, OK Storm Using EnKF Data Assimilation

Kristin M. Kuhlman, University of Oklahoma, Norman, OK; and E. R. Mansell, D. R. MacGorman, and M. I. Biggerstaff

Presentation PDF (1.2 MB)

Session 13B

Numerical Weather Prediction: Model Verification

Location: Grand Mesa Ballroom D (Hyatt Regency Tech Center)

Host: 25th Conference on Severe Local Storms

Chair: Louis J. Wicker, NOAA/NSSL

8:30 AM

13B.1

An Overview of the Objective Evaluation Performed During the Hazardous Weather Testbed (HWT) 2010 Spring Experimen

Tara L. Jensen, NCAR/RAL, Boulder, CO; and M. Harrold, B. G. Brown, S. J. Weiss, P. T. Marsh, M. Xue, F. Kong, A. J. Clark, K. W. Thomas, J. S. Kain, R. S. Schneider, D. R. Novak, F. E. Barthold, J. J. Levit, and M. C. Coniglio

Recorded Presentation

Presentation PDF (793.2 kB)

8:45 AM

13B.2

A Report and Feature-based Verification Study of the CAPS 2008 Storm-Scale Ensemble Forecasts for Severe Convective Weather

Amy R. Harless, NOAA/NWS, Norman, OK; and S. J. Weiss, R. S. Schneider, M. Xue, and F. Kong

Presentation PDF (910.8 kB)

9:00 AM

13B.3

Evaluation of the performance and distribution of hourly maximum fields from storm-scale ensemble forecasts

Israel L. Jirak, NOAA/NWS/NCEP/SPC, Norman, OK; and S. J. Weiss, C. J. Melick, P. T. Marsh, J. S. Kain, A. J. Clark, M. Xue, F. Kong, and K. W. Thomas

Recorded Presentation

Presentation PDF (519.3 kB)

9:15 AM

13B.4

When can high-resolution NWP model forecasts be trusted? Using error characteristics of the initial conditions to evaluate the likelihood of accurate forecasts

Craig S. Schwartz, NCAR, Boulder, CO; and M. L. Weisman and W. Wang

Recorded Presentation

9:30 AM

13B.5

An environmental climatology of the CAPS Storm-Scale Ensemble Forecast system during the 2010 HWT Spring Experiment

Christopher J. Melick, NOAA/NWS/NCEP/SPC, Norman, OK; and I. L. Jirak, S. J. Weiss, A. J. Clark, P. T. Marsh, J. S. Kain, M. Xue, F. Kong, and K. W. Thomas

Recorded Presentation

Presentation PDF (1.1 MB)

9:45 AM

13B.6

Using traditional and spatial verification methods to evaluate real-time model forecasts of convection

Derek R. Stratman, CAPS/Univ. of Oklahoma, Norman, OK; and M. C. Coniglio and M. Xue

Recorded Presentation

Coffee Break

Location: Grand Mesa Ballroom ABC (Hyatt Regency Tech Center)

Session 14

Forecasting Techniques and Warning Decision Making: Short-Range Forecasting II

Location: Grand Mesa Ballroom F (Hyatt Regency Tech Center)

Host: 25th Conference on Severe Local Storms

Chair: Michael C. Coniglio, NOAA/NSSL

10:30 AM

14.1

Invited Speaker—Future of severe storm forecasting

David Stensrud, CIMMS, Norman, OK

Recorded Presentation

11:00 AM

14.2

Assessing the utility of several analysis schemes for diagnosing precursor signals for convective initiation and non-supercell tornadogenesis along boundaries

Edward J. Szoke, CIRA/Colorado State Univ. and NOAA/GSD, Boulder, CO; and S. Albers, Y. Xie, L. S. Wharton, R. Glancy, E. Thaler, D. Barjenbruch, B. Meier, and Z. Toth

Recorded Presentation

Presentation PDF (1.1 MB)

11:15 AM

14.3

Using convection-allowing models to produce forecast guidance for severe thunderstorm hazards via a “surrogate severe” approach

Ryan Sobash, University of Oklahoma, Norman, OK; and J. S. Kain, M. C. Coniglio, A. R. Dean, D. R. Bright, and S. J. Weiss

Recorded Presentation

Presentation PDF (2.0 MB)

11:30 AM

14.4

Investigating a fundamental component of a Warn-on-Forecast system in a collaborative real-time experiment

Patrick T. Marsh, NOAA/NSSL & OU/CIMMS/SoM, Norman, OK; and J. S. Kain, S. J. Weiss, I. L. Jirak, R. Sobash, F. Kong, K. W. Thomas, and M. Xue

Recorded Presentation

Presentation PDF (1.8 MB)

11:45 AM

14.5

Forecasting Supercell Storms: Application of Operational Tools and Cutting-Edge Numerical Model Guidance in VORTEX2

Keith A. Brewster, CAPS/Univ. of Oklahoma, Norman, OK; and J. G. LaDue, M. C. Coniglio, M. P. Foster, T. P. Marshall, and G. S. Garfield

Recorded Presentation

Presentation PDF (2.6 MB)

Break for Lunch

Session 15

Supercells and Tornadoes: Tornadogenesis

Location: Grand Mesa Ballroom F (Hyatt Regency Tech Center)

Host: 25th Conference on Severe Local Storms

Chair: Yvette P. Richardson, Pennsylvania State University

1:30 PM

15.1

Near-surface vortexgenesis in idealized three-dimensional numerical simulations involving a heat source and a heat sink in a vertically sheared environment

Paul M. Markowski, Pennsylvania State University, University Park, PA; and M. Majcen and Y. Richardson

Recorded Presentation

Presentation PDF (106.0 kB)

1:45 PM

15.2

Evolution of a Tornadic Supercell and its Environment Sampled by the NWRT Phased Array Radar and Oklahoma City Micronet

Rick Hluchan, University of Oklahoma, Norman, OK; and P. L. Heinselman and R. A. Brown

Recorded Presentation

Presentation PDF (1.0 MB)

2:00 PM

15.3

TTUKa Mobile Doppler Radar Observations of Near-Surface Circulations in VORTEX2

Patrick S. Skinner, Texas Tech University, Lubbock, TX; and C. C. Weiss, A. E. Reinhart, W. S. Gunter, J. L. Schroeder, and J. Guynes

Recorded Presentation

Presentation PDF (1.4 MB)

2:15 PM

15.4

High-resolution radar analysis during tornadogenesis from OU-PRIME on 10 May 2010

David Bodine, University of Oklahoma, Norman, OK; and R. D. Palmer, C. Ziegler, and P. L. Heinselman

Recorded Presentation

Presentation PDF (2.6 MB)

2:30 PM

15.5

Precipitation properties of a cool-season tornadic storm inferred from C-band dual-polarimetric radar and 2D-video disdrometer observations

Lawrence D. Carey, University of Alabama in Huntsville, Huntsville, AL; and W. A. Petersen, M. Thurai, M. E. Anderson, E. V. Schultz, C. J. Schultz, and K. Knupp

Recorded Presentation

Presentation PDF (583.8 kB)

2:45 PM

15.6

Comparing aerosol and low-level moisture influences on supercell tornadogenesis: idealized simulations

David Lerach, Colorado State University, Fort Collins, CO; and W. R. Cotton

Recorded Presentation

Presentation PDF (674.7 kB)

Formal Poster Viewing with Coffee Break

Location: Grand Mesa Ballroom ABC (Hyatt Regency Tech Center)

Poster Session 9

Forecasting Techniques and Warning Decision Making Posters II

Location: Grand Mesa Ballroom ABC (Hyatt Regency Tech Center)

Host: 25th Conference on Severe Local Storms

P9.1

A study of convective initiation failure on 22 October 2004

Jennifer M. Laflin, NWS, Pleasant Hill, MO; and P. N. Schumacher

Handout (876.1 kB)

P9.2

Comparing techniques and reanalysis datasets when diagnosing the relative severity of convective outbreaks

Chad M. Shafer, University of Oklahoma, Norman, OK ; and A. E. Mercer, M. Richman, L. M. Leslie, and C. A. Doswell III

P9.3

An operational approach for integrating multiple high resolution model solutions during a high impact event: the 22 May 2010 EF4 Bowdle tornado

Michael A. Fowle, NOAA/NWS, Aberdeen, SD

Handout (1.9 MB)

P9.4

Composite analysis of environmental conditions favorable for significant tornadoes across eastern Kansas

Joshua M. Boustead, NOAA/NWS, Valley, NE; and B. Mayes Boustead, W. Gargan, G. Phillips, and J. Leighton

Handout (1.9 MB)

P9.5

An application of a cutoff low forecaster pattern recognition model to the 30 June–2 July 2009 significant event for the Northeast

Thomas A. Wasula, NOAA/NWS, Albany, NY; and N. A. Stuart, M. Scalora, L. Bosart, and D. Keyser

Handout (1.9 MB)

P9.6

WSR-88D close-range sampling of neighboring supercells: a case of tornadic versus non-tornadic tendencies

Steven R. Cobb, NOAA/NWSFO, Lubbock, TX; and T. T. Lindley

P9.7

ZDR column characteristics and trends during the 10 May 2010 severe weather outbreak

Cynthia A. Van Den Broeke, Lincoln, NE, Lincoln, NE; and C. D. Payne, L. R. Lemon, and P. T. Schlatter

Handout (932.4 kB)

P9.8

The impact of WSR-88D Super-Resolution data in low-level mesocyclone evaluation

James G. LaDue, NOAA/NWS, Norman, OK; and C. S. Spannagle, V. L. Holtz, and S. M. Torres

P9.9

The Texas Flash Flood Coalition: Finding Key Solutions in the United States' Deadliest "Flash Flood Alley"

Poster Session 10

Supercells and Tornadoes Posters III

Location: Grand Mesa Ballroom ABC (Hyatt Regency Tech Center)

Host: 25th Conference on Severe Local Storms

P10.1 moved. New paper number P8.29

P10.1

Using new technologies for damage surveys

John T. Ferree, NOAA/NWS, Norman, OK; and R. Smith and J. Robinson

P10.2

Forest damage associated with tornadoes in northern Arizona

David O. Blanchard, NOAA/NWS, Flagstaff, AZ

Handout (2.6 MB)

P10.3

The mystery of the Saragosa, Texas tornadoes: Was Saragosa hit by tornadoes multiple times prior to the 1987 tornado?

Mark R. Conder, NOAA/NWSFO, Lubbock, TX; and G. Skwira

P10.4

Taxonomy and analysis of tornado surface marks

M. I. Zimmerman, West Virginia Univ., Morgantown, WV; and D. C. Lewellen

Handout (2.8 MB)

P10.5

On the performance of brick and concrete masonry in windstorms

Timothy P. Marshall, Haag Engineering Co., Irving, TX

Handout (466.9 kB)

P10.6

In Situ and radar observations of low-level winds in tornadoes

Joshua Wurman, Center for Severe Weather Research, Boulder, CO; and K. A. Kosiba and P. Robinson

P10.7

A comparison of radar observations to real data simulations of axisymmetric tornadoes

Karen A. Kosiba, Center for Severe Weather Research, Boulder, CO; and R. J. Trapp

P10.8

Investigations of Cai's Power Law for Strong Tornados

Douglas P. Dokken, University of St. Thomas, St. Paul, MN; and K. Scholz and M. Shvartsman

Handout (518.7 kB)

P10.9

Statistical Mechanics of Tornado Intensity Distributions

Masahisa Nakazato, MRI, Tsukuba, Ibaraki, Japan; and O. Suzuki, K. Kusunoki, H. Yamauchi, and H. Y. Inoue

P10.10

An anticyclonic tornado observed 10 May 2010 with CASA radar

J. A. Brotzge, CAPS/Univ. of Oklahoma, Norman, OK; and L. R. Lemon

P10.11

Analysis of near-surface wind flow in close proximity to tornadoes

Christopher D. Karstens, Iowa State University, Ames, IA; and T. M. Samaras, W. A. Gallus Jr., C. A. Finley, and B. D. Lee

Handout (2.4 MB)

P10.12

A new parametric model of vortex tangential wind-profile: Testing and verification

Vincent T. Wood, NOAA/NSSL, Norman, OK; and L. W. White

Handout (467.4 kB)

P10.13

Exploring Doppler radar estimates of tornado intensity

Mallie Toth, Purdue University, West Lafayette, IN; and R. J. Trapp, J. Wurman, and K. A. Kosiba

P10.14

Two tornadic thunderstorms in ostensibly weak deep layer shear environments in southeastern Colorado: cyclic supercells of May 25 (Kiowa County) and May 31 (Baca County) 2010

John P. Monteverdi, San Francisco State Univ., San Francisco, CA; and M. Umscheid and E. M. Bookbinder

Handout (1.9 MB)

P10.15

Numerical simulation of low-level misocyclones associated with winter convective cells: a case study from the Shonai area railroad weather project

Ken-ichi Shimose, MRI, Tsukuba, Japan; and S. Hayashi, W. Mashiko, K. Kusunoki, K. Bessho, S. Hoshino, K. Araki, H. Y. Inoue, M. Nakazato, Y. Hono, T. Imai, K. Adachi, H. Yamauchi, and T. Takemi

Handout (500.2 kB)

P10.16

Case of rapid tornado development from a cell with maximum reflectivity of 40dBz

Paul G. Wolyn, NOAA/NWSFO, Pueblo, CO

P10.17

Impact of lapse rates upon low-level rotation in idealized storms

Matthew D. Parker, North Carolina State Univ., Raleigh, NC

P10.18

Origins of the Granite Falls, MN Tornado, July 25, 2000 Revisited

Douglas P. Dokken, University of St. Thomas, St. Paul, MN; and L. Edholm, J. Nelson, K. Scholz, P. Shanahan, K. Weise, R. Naistat, and W. E. Togstad

Handout (1.6 MB)

P10.19

Characteristics of supercells simulated with tornadic and non-tornadic RUC-2 proximity soundings. Part III: Comparisons at tornado-resolving gridspacing

Jason Naylor, NorthWest Research Associates, Boulder, CO; and M. S. Gilmore, R. Edwards, and R. L. Thompson

Handout (1.1 MB)

Session 16A

Supercells and Tornadoes: Tornado Structure, Dynamics, and Damage II

Location: Grand Mesa Ballroom F (Hyatt Regency Tech Center)

Host: 25th Conference on Severe Local Storms

Chair: Paul M. Markowski, Pennsylvania State University

4:30 PM

16A.1

A diagnostic study of a numerically generated supercell tornado vortex

Gregory J. Tripoli, University of Wisconsin, Madison, WI; and M. L. Büker

Recorded Presentation

4:45 PM

16A.2

The electromagnetic-hydrodynamic analogy: an approach to vortex dynamics and preservation in tornadic simulations

Marcus L. Büker, Western Illinois University, Macomb, IL; and G. J. Tripoli

Recorded Presentation

Presentation PDF (562.0 kB)

5:00 PM

16A.3

Classifying and analyzing tornado-like vortices far from axisymmetry

D. C. Lewellen, West Virginia Univ., Morgantown, WV

Recorded Presentation

Presentation PDF (789.9 kB)

5:15 PM

16A.4

Oklahoma tornadoes of 10 May 2010

Leslie R. Lemon, CIMMS/Univ. of Oklahoma, Norman, OK; and C. D. Payne, C. A. Van Den Broeke, and P. T. Schlatter

Recorded Presentation

Presentation PDF (1.9 MB)

5:30 PM

16A.5

Rapid-scan analyses of supercells during tornadogenesis using a mobile, phased-array, X-band, Doppler radar

Michael M. French, Univ. of Oklahoma, Norman, OK; and H. B. Bluestein, I. PopStefanija, C. Baldi, and R. Bluth

Recorded Presentation

5:45 PM

16A.6

An Examination of the Vertical Structure of two tornadoes using Ka-band mobile doppler radar

Ryan S. Metzger, Texas Tech University, Lubbock, TX; and C. C. Weiss

Recorded Presentation

Presentation PDF (1.1 MB)

Session 16B

Severe Weather Climatology III

Location: Grand Mesa Ballroom D (Hyatt Regency Tech Center)

Host: 25th Conference on Severe Local Storms

Chair: William A. Gallus Jr., Iowa State Univ.

4:30 PM

16B.1

A technique for developing a US climatology of thunderstorms: The ThOR algorithm

Jamie Lahowetz, University of Nebraska, Lincoln, NE; and A. Houston, G. Limpert, A. Gibbs, and B. L. Barjenbruch

4:45 PM

16B.2

Tracking of mesoscale weather systems in a high-resolution convection-permitting simulation of current climate

Benjamin R. J. Schwedler, Purdue University, West Lafayette, IN; and M. E. Baldwin and R. J. Trapp

Recorded Presentation

5:00 PM

16B.3

Measured severe convective wind gust climatology of thunderstorms for the contiguous United States, 2003–2009

Bryan T. Smith, NOAA/NWS/NCEP/SPC, Norman, OK; and A. C. Winters, C. M. Mead, A. R. Dean, and T. E. Castellanos

Recorded Presentation

Presentation PDF (1.6 MB)

5:15 PM

16B.4

Regional trends of severe convective weather from high-resolution WRF simulations

Eric D. Robinson, Purdue University, West Lafayette, IN; and R. J. Trapp, M. E. Baldwin, N. S. Diffenbaugh, and A. Gluhovsky

Recorded Presentation

5:30 PM

16B.5

A comparison of the ambient conditions favoring different organizational convective structures over the Northeast US

Kelly Lombardo, Stony Brook University/SUNY, Stony Brook, NY

Recorded Presentation

5:45 PM

16B.6

Climatology of near-storm environments with convective modes for significant severe thunderstorms in the contiguous United States

Richard L. Thompson, SPC/NWS/NOAA, Norman, OK; and B. T. Smith, J. S. Grams, A. R. Dean, and C. Broyles

Recorded Presentation

Presentation PDF (389.3 kB)

6:00 PM

16B.7

Effects of climate change on Central United States severe weather environments

James Correia, PNNL, Richland, WA; and R. Leung

Recorded Presentation

6:15 PM

Awards & Concluding Remarks

25th Conference on Severe Local Storms Adjourns

Storm Video Night II

Location: Grand Mesa Ballroom F (Hyatt Regency Tech Center)

25th Conference on Severe Local Storms

Monday, 11 October 2010

6:00 AM-11:55 PM: Monday, 11 October 2010

9:00 AM-10:20 AM: Monday, 11 October 2010

10:20 AM-10:45 AM: Monday, 11 October 2010

10:45 AM-12:00 PM: Monday, 11 October 2010

12:00 PM-1:30 PM: Monday, 11 October 2010

1:30 PM-3:00 PM: Monday, 11 October 2010

3:00 PM-4:30 PM: Monday, 11 October 2010

4:30 PM-5:45 PM: Monday, 11 October 2010

4:30 PM-6:00 PM: Monday, 11 October 2010

6:00 PM-7:30 PM: Monday, 11 October 2010

7:30 PM-9:15 PM: Monday, 11 October 2010

9:30 PM-9:35 PM: Monday, 11 October 2010

9:30 PM-11:00 PM: Monday, 11 October 2010

Tuesday, 12 October 2010

6:00 AM-11:55 PM: Tuesday, 12 October 2010

8:00 AM-10:00 AM: Tuesday, 12 October 2010

10:00 AM-10:30 AM: Tuesday, 12 October 2010

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1:30 PM-3:00 PM: Tuesday, 12 October 2010

3:00 PM-4:30 PM: Tuesday, 12 October 2010

4:30 PM-6:15 PM: Tuesday, 12 October 2010

6:30 PM-6:35 PM: Tuesday, 12 October 2010

8:00 PM-10:00 PM: Tuesday, 12 October 2010

Wednesday, 13 October 2010

6:00 AM-11:55 PM: Wednesday, 13 October 2010

8:15 AM-10:00 AM: Wednesday, 13 October 2010

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1:30 PM-3:15 PM: Wednesday, 13 October 2010

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3:15 PM-5:00 PM: Wednesday, 13 October 2010

5:00 PM-5:05 PM: Wednesday, 13 October 2010

5:30 PM-10:00 PM: Wednesday, 13 October 2010

Thursday, 14 October 2010

6:00 AM-11:55 PM: Thursday, 14 October 2010

8:00 AM-10:00 AM: Thursday, 14 October 2010

8:30 AM-10:00 AM: Thursday, 14 October 2010

10:00 AM-10:30 AM: Thursday, 14 October 2010

10:30 AM-12:00 PM: Thursday, 14 October 2010

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1:30 PM-3:00 PM: Thursday, 14 October 2010

3:00 PM-4:30 PM: Thursday, 14 October 2010

4:30 PM-6:00 PM: Thursday, 14 October 2010

4:30 PM-6:30 PM: Thursday, 14 October 2010

6:30 PM-6:35 PM: Thursday, 14 October 2010

8:30 PM-10:30 PM: Thursday, 14 October 2010

Monday, 11 October 2010

6:00 AM-11:55 PM: Monday, 11 October 2010

9:00 AM-10:20 AM: Monday, 11 October 2010

10:20 AM-10:45 AM: Monday, 11 October 2010

10:45 AM-12:00 PM: Monday, 11 October 2010

12:00 PM-1:30 PM: Monday, 11 October 2010

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6:00 PM-7:30 PM: Monday, 11 October 2010

7:30 PM-9:15 PM: Monday, 11 October 2010

9:30 PM-9:35 PM: Monday, 11 October 2010

9:30 PM-11:00 PM: Monday, 11 October 2010

Tuesday, 12 October 2010

6:00 AM-11:55 PM: Tuesday, 12 October 2010

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Wednesday, 13 October 2010

6:00 AM-11:55 PM: Wednesday, 13 October 2010

8:15 AM-10:00 AM: Wednesday, 13 October 2010

10:00 AM-10:30 AM: Wednesday, 13 October 2010

10:30 AM-12:00 PM: Wednesday, 13 October 2010