Program: 24th Conference on Severe Local Storms (24th Conference on Severe Local Storms (27

Session 1

Climate Change and Severe Weather

Location: North & Center Ballroom (Hilton DeSoto)

Host: 24th Conference on Severe Local Storms

Chair: Lance F. Bosart, SUNY

9:00 AM

Introductory Remarks

9:05 AM

1.1

A preliminary investigation of severe thunderstorm environment distributions under global warming as simulated by CCSM3

Patrick T. Marsh, NOAA/NSSL & OU/CIMMS/SoM, Norman, OK; and H. E. Brooks and D. J. Karoly

Recorded presentation

9:20 AM

1.2

Severe weather environments in long term regional climate simulations for North America

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

Recorded presentation

9:35 AM

1.3

Transient response of severe convective storm forcing associated with global increases in greenhouse gas concentrations

Robert J. Trapp, Purdue Univ., West Lafayette, IN ; and N. S. Diffenbaugh and A. Gluhovsky

9:50 AM

1.4

Evaluating the impacts of climate change on rainfall extremes for Hawaii and coastal Alaska

David H. Levinson, NOAA/NESDIS/NCDC, Asheville, NC ; and M. C. Kruk

Recorded presentation

Presentation PDF (131.1 kB)

Coffee Break

Location: Madison Ballroom (Hilton DeSoto)

Session 2

Geary, OK and Greensburg, KS storms

Location: North & Center Ballroom (Hilton DeSoto)

Host: 24th Conference on Severe Local Storms

Chair: James G. LaDue, NOAA/NWS

10:30 AM

2.1

Structure and evolution of the 29 May 2004 Geary, OK tornadic supercell thunderstorm

Michael I. Biggerstaff, Univ. of Oklahoma, Norman, OK; and K. M. Kuhlman, D. P. Betten, D. R. MacGorman, G. D. Carrie, and C. L. Ziegler

Recorded presentation

10:45 AM

2.2

Evolution of low-level rotation in the tornadic 29 May 2004 Geary, Oklahoma supercell storm

Conrad L. Ziegler, NOAA/NSSL, Norman, OK ; and K. M. Kuhlman, M. I. Biggerstaff, D. P. Betten, L. J. Wicker, E. R. Mansell, and D. R. MacGorman

Recorded presentation

11:00 AM

2.3

Comparison of three-dimensional winds derived from assimilated phased array radar data with mobile dual-doppler analyses from a tornadic storm

Therese E. Thompson, Univ. of Oklahoma, Norman, OK; and L. J. Wicker, M. Biggerstaff, and K. M. Kuhlman

Recorded presentation

11:15 AM

2.4

The Greensburg, KS tornadic storm: a storm of extremes

Leslie R. Lemon, CIMMS/Univ. of Oklahoma, Norman, OK; and M. Umschied

Recorded presentation

Presentation PDF (2.1 MB)

11:30 AM

2.5

Polarimetric-radar signatures associated with the Greensburg, Kansas tornado

Howard B. Bluestein, Univ. of Oklahoma, Norman, OK; and K. Hardwick, M. Umschied, R. L. Tanamachi, J. Houser, and S. J. Frasier

Recorded presentation

11:45 AM

2.6

X-band, mobile Doppler radar data collected in a tornadic thunderstorm: Data assimilation experiments

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

Recorded presentation

Lunch Break

Session 3A

Super Tuesday Outbreak

Location: North & Center Ballroom (Hilton DeSoto)

Host: 24th Conference on Severe Local Storms

Chair: Ron W. Przybylinski, NOAA/NWSFO

1:30 PM

3A.1

The 2008 Super Tuesday Tornado Outbreak: Overview of the tornadoes and their parent storms

Kevin R. Knupp, University of Alabama in Huntsville, Huntsville, AL ; and T. Coleman, W. Petersen, and L. Carey

Recorded presentation

1:45 PM

3A.2

Forecasting the Super Tuesday tornado outbreak at the Storm Prediction Center: Why forecast uncertainty does not necessarily decrease as you get closer to a high impact weather event

Jeffry S. Evans, NOAA/NWS/WFO Tallahassee, FL, Tallahassee, FL; and C. M. Mead and S. J. Weiss

Recorded presentation

Presentation PDF (419.2 kB)

2:00 PM

3A.3

Mesoscale phenomena affecting the Alabama EF-4 tornadoes during the Super Tuesday Tornado Outbreak of 5-6 February 2008

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

Recorded presentation

2:15 PM

3A.4

Analysis of the elevated mixed layer during the Super Tuesday outbreak

Christina C. Crowe, University of Alabama at Huntsville, Huntsville, AL ; and J. R. Mecikalski

Recorded presentation

Presentation PDF (1.8 MB)

2:30 PM

3A.5

Societal Impacts of the February 6th, 2008 Tornadoes in Northern Alabama

John M. Coyne, NOAA/NWS, Huntsville, AL; and C. B. Darden

Recorded presentation

2:45 PM

3A.6

The 2008 Super Tuesday Severe Weather Outbreak: An Arkansas Perspective

C. C. Buonanno, NOAA/NWS, North Little Rock, AR; and J. A. Lewis III

Recorded presentation

Presentation PDF (1.2 MB)

Session 3B

Polarimetric Radar Observations and Lightning

Location: South Ballroom (Hilton DeSoto)

Host: 24th Conference on Severe Local Storms

Chair: Michael I. Biggerstaff, Univ. of Oklahoma

1:30 PM

3B.1

Total lightning trend analysis of two EF-4 tornado producing supercells from February 6, 2008

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

Recorded presentation

1:45 PM

3B.2

Lightning behavior and its dependence on storm kinematic and precipitation processes for an EF-4 tornado producing supercell on 6 February 2008

Elise V. Johnson, Univ. of Alabama, Huntsville, AL; and W. A. Petersen

Recorded presentation

2:00 PM

3B.3

Use of vertically integrated ice in WRF-based forecasts of lightning threat

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

Presentation PDF (237.0 kB)

2:15 PM

3B.4

Microphysical differences between tornadic and nontornadic supercell rear-flank downdrafts revealed by dual-polarization radar measurements

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

Recorded presentation

Presentation PDF (642.3 kB)

2:30 PM

3B.5

Spectral analysis of dual-polarization radar signals in a tornadic supercell storm

Yadong Wang, Univ. of Oklahoma, Norman, OK; and X. Xiao and T. Y. Yu

Presentation PDF (994.6 kB)

2:45 PM

3B.6

ARMOR dual-polarimetric radar observations of tornadic debris signatures

Walter A. Petersen, NASA / MSFC, Huntsville, AL ; and L. D. Carey, K. R. Knupp, C. J. Schultz, and E. V. Johnson

Recorded presentation

Poster Session 1

Climate Change and Severe Weather Posters

Location: Madison Ballroom (Hilton DeSoto)

Host: 24th Conference on Severe Local Storms

P1.1

First results of climate change impacts on severe convective storms over Europe

Julia Sander, DLR Deutsches Zentrum für Luft- und Raumfahrt, Wessling, , Germany; and N. Dotzek

Handout (879.2 kB)

Poster Session 2

Super Tuesday Outbreak Posters

Location: Madison Ballroom (Hilton DeSoto)

Host: 24th Conference on Severe Local Storms

P2.1

Analysis of the tornado warnings for the 123 mile long tornado track during the Super Tuesday Outbreak

Caitlin I. Ross, University of Nebraska, Lincoln, NE ; and D. Nietfeld and N. Umphlett

P2.2

Microphysical processes in two tornadic supercells inferred from ARMOR dual-polarimetric radar observations

Lawrence D. Carey, University of Alabama in Huntsville, Huntsville, AL; and W. A. Petersen and K. R. Knupp

P2.3

The 2008 Super Tuesday Tornado Outbreak: Synthetic dual Doppler analysis of contrasting tornadic storm types

Kevin Knupp, University of Alabama in Huntsville, Huntsville, AL ; and T. Coleman, L. Carey, W. Petersen, and C. Elkins

Poster Session 3

Supercells and Tornadoes Posters

Location: Madison Ballroom (Hilton DeSoto)

Host: 24th Conference on Severe Local Storms

P3.1

An Analysis of a Prolific Tornado-producing Cyclic Supercell Thunderstorm in Nuckolls County Nebraska, May 24, 2004

John P. Monteverdi, San Francisco State Univ., San Francisco, CA; and E. Polito, M. Gough, R. Bethke, and T. Seddon

Handout (720.5 kB)

P3.2

The Rosita Valley, TX tornado

Timothy P. Marshall, Haag Engineering Co., Irving, TX; and L. Eblen

Handout (1.3 MB)

P3.3

The Parkersburg, IA tornado

Timothy P. Marshall, Haag Engineering Co., Irving, TX; and K. Jungbluth and A. Baca

Handout (1.5 MB)

P3.4

A skirted Rankine combined vortex model

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

Handout (387.9 kB)

P3.5

Impact of a Tornado's Low–Reflectivity Eye on Distorting the Associated Peak Doppler Velocity Measurements: A Simulation Study

Rodger A. Brown, NOAA/NSSL, Norman, OK; and V. T. Wood and D. C. Dowell

Handout (639.0 kB)

P3.6

An investigation of the significant tornado outbreak in southern South Carolina and northern coastal Georgia on March 15, 2008

Frank Alsheimer, NOAA/NWSFO, North Charleston, SC; and R. Bright, J. Jelsema, W. Moen, J. Quagliariello, and D. Berry

Handout (2.5 MB)

P3.7

A Tale of Two Supercells: The Randall County storms of 16-17 October 2007

Matthew R. Kramar, NOAA/NWSFO, Sterling, VA; and J. K. Jordan

Handout (8.8 kB)

P3.8

Structural variability of miniature supercells in tropical cyclone rainbands

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

P3.9

Coordinated in-situ and remote sampling of supercell thunderstorms

Christopher C. Weiss, Texas Tech University, Lubbock, TX ; and J. Wurman

P3.10

Diagnotic calculations of motions of vertical velocity and low-level vertical vorticity maxima in radar data and numerically simulated supercell thunderstorms

Robin L. Tanamachi, Univ. of Oklahoma, Norman, OK ; and R. Davies-Jones, H. B. Bluestein, D. C. Dowell, and H. Cai

P3.11

TWISTEX 2008: In situ and mobile mesonet observations of tornadoes

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

Handout (751.7 kB)

P3.12

Dual-Doppler analyses of the 4 May, 2007 supercell that produced the Greensburg, KS tornado

Jana Lesak Houser, Univ. of Oklahoma, Norman, OK ; and H. B. Bluestein, K. Hardwick, S. J. Frasier, and M. Umscheid

P3.13

Thermodynamic and kinematic analysis near and within the Tipton, KS tornado on May 29 during TWISTEX 2008

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

Handout (684.5 kB)

P3.14

Three strong tornadoes in 2008 associated with boundary intersections and narrow instability close to 700 mb “cold-core” lows

Jonathan M. Davies, Private Meteorologist, Trimble/Kansas City, MO

Handout (633.4 kB)

P3.15

The April 28, 2008 Southeast Virginia Historic Tornado Outbreak

Bryan Jackson, NOAA/NWSFO, Sterling, VA; and J. Billet

Handout (2.4 MB)

P3.16

A detailed radar and damage analysis of the nocturnal QLCS tornadoes that moved through Omaha, Nebraska on 8 June, 2008

Daniel Nietfeld, NOAA, Valley, NE; and J. T. Martinelli and B. Mayes Boustead

P3.17

The development of multiple low-level mesocyclones within a supercell

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

Handout (655.8 kB)

P3.18

Mobile mesonet observations of an intense RFD and multiple RFD gust fronts in the May 23 Quinter, Kansas tornadic supercell during TWISTEX 2008

Catherine A. Finley, WindLogics Inc., Grand Rapids, MN; and B. D. Lee

Handout (1.4 MB)

P3.19

Evaluation of NWS Watch and Warning Performance Related to Tornadic Events

Kelly M. Keene, Texas A&M University, College Station, TX; and P. T. Schlatter, J. E. Hales, and H. Brooks

Handout (130.0 kB)

P3.20

DOW observations of multiple vortex structure in several tornadoes

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

Handout (2.9 MB)

P3.21

A preliminary result of statistics for meso-vortex-signatures in Japan detected by MRI-MDA

Osamu Suzuki, Meteorological Research Institute, Tsukuba, Ibaraki, Japan; and H. Yamauchi, M. Nakazato, and H. Inoue

P3.22

Analysis of the Stuttgart Arkansas tornado

Boniface J. Mills, University of Louisiana at Monroe, Monroe, LA ; and D. Wheeler and D. Jones

P3.23

The Association of Cell Mergers with Tornado Occurrence

Jaret W. Rogers, NOAA/NWS, Norman, OK; and C. C. Weiss

Handout (799.4 kB)

P3.24

Analysis of atmospheric conditions associated with the Embry-Riddle tornado of Christmas Day 2006

John M. Lanicci, Embry-Riddle Aeronautical Univ., Daytona Beach, FL

Handout (1.2 MB)

P3.25

Nocturnal tornadoes and low-level static stability

Amanda K. Kis, School of Meteorology, University of Oklahoma, Norman, OK ; and J. M. Straka and K. M. Kanak

Handout (554.5 kB)

Coffee Break and Formal Poster Viewing

Location: Madison Ballroom (Hilton DeSoto)

Session 4

Supercells and Tornadoes

Location: South Ballroom (Hilton DeSoto)

Host: 24th Conference on Severe Local Storms

Chair: Curtis R. Alexander, Center for Severe Weather Research

4:30 PM

4.1

The structure and evolution of vortex lines in supercell thunderstorms

Paul Markowski, Penn State University, University Park, PA; and Y. P. Richardson

Recorded presentation

Presentation PDF (1.6 MB)

4:45 PM

4.2

An aircraft penetration through a rear-flank downdraft: Revisting an old case

Donald W. Burgess, CIMMS/Univ. of Oklahoma, Norman, OK

Recorded presentation

Presentation PDF (931.1 kB)

5:00 PM

4.3

Observations of storm scale boundary evolution within the 23 May 2007 Perryton, TX supercell

Patrick S. Skinner, Texas Tech University, Lubbock, TX; and C. C. Weiss

Recorded presentation

Presentation PDF (2.4 MB)

5:15 PM

4.4

Multi-Scale Simulations of the 26 August 2007 Northwood, ND EF4 Tornado

Jeffrey S. Tilley, Univ. of North Dakota, Grand Forks, ND ; and C. J. Theisen and M. Askelson

Recorded presentation

Session

Icebreaker Reception

Location: Madison Ballroom (Hilton DeSoto)

Host: 24th Conference on Severe Local Storms

Session 4A

VORTEX 2 Town Hall Meeting

Location: North & Center Ballroom (Hilton DeSoto)

Host: 24th Conference on Severe Local Storms

4A.1

Vortex 2: The Second Verification of the Origins of Rotation in Tornadoes Experiment

Session 5

VORTEX2-Related Contributions

Location: North & Center Ballroom (Hilton DeSoto)

Host: 24th Conference on Severe Local Storms

Chair: Harold E. Brooks, NOAA/NSSL

7:45 PM

5.1

The 2007 and 2008 MOBILE Experiment: Development and testing of the TTU StickNet platforms

Christopher C. Weiss, Texas Tech University, Lubbock, TX ; and J. L. Schroeder

Recorded presentation

Presentation PDF (321.3 kB)

8:00 PM

5.2

Storm-scale sampling strategies for the mobile C-band Doppler radars during VORTEX2

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

Recorded presentation

8:15 PM

5.3

Severe-storm data collected in the Southern Plains by three mobile Doppler radars during the spring, 2007 and 2008

Howard B. Bluestein, Univ. of Oklahoma, Norman, OK; and I. PopStefanija, V. Venkatesh, P. S. Tsai, R. L. Tanamachi, M. M. French, J. C. Snyder, J. Houser, D. T. Dawson II, C. Baldi, B. Seeger, S. J. Frasier, J. Knorr, and R. Bluth

Recorded presentation

8:30 PM

5.4

Preliminary Results and Report of the ROTATE-2008 radar / in-situ / mobile mesonet experiment

Joshua Wurman, Center for Severe Weather Research, Boulder, CO

Recorded presentation

8:45 PM

5.5

Comparison of polarimetric radar observations of tornadic supercells at S, C, and X bands

Matthew R. Kumjian, CIMMS/Univ. of Oklahoma and NOAA/NSSL, Norman, OK ; and J. Snyder, A. V. Ryzhkov, D. S. Zrnic, S. Frasier, and H. B. Bluestein

Recorded presentation

Presentation PDF (2.7 MB)

Session 6

Bow Echoes and Mesoscale Convective Systems

Location: North & Center Ballroom (Hilton DeSoto)

Host: 24th Conference on Severe Local Storms

Chair: Robert J. Trapp, Purdue Univ.

8:30 AM

6.1

Maintenance and Dissipation of mesoscale convective systems that encounter the Great Lakes

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

Recorded presentation

8:45 AM

6.2

Flash-flood-producing convective systems associated with mesoscale convective vortices

Russ S. Schumacher, Colorado State University, Fort Collins, CO ; and R. H. Johnson

Recorded presentation

9:00 AM

6.3

Kinematic structure and evolution of the 9 March 2006 Mississippi/Alabama bow echo

Calvin Elkins, Univ. of Alabama - Huntsville, Huntsville, AL

Recorded presentation

9:15 AM

6.4

The 19 July 2006 Midwest Derecho: A Meteorological Perspective and Lessons Learned

Ron W. Przybylinski, NOAA/NWSFO, Saint Charles, MO; and J. E. Sieveking, B. D. Sipprell, and J. L. Guyer

Recorded presentation

Presentation PDF (1.3 MB)

9:30 AM

6.5

Analysis of the 21 July 2006 Greater St. Louis and Southwest Illinois Bow Echo event

James E. Sieveking, NOAA/NWSFO, St. Charles, MO ; and R. W. Przybylinski

Recorded presentation

Presentation PDF (663.4 kB)

9:45 AM

6.6

Observations from the 23 August 2007 Chicago Derecho

Gino Izzi, NOAA/NWS, Chicago, IL; and R. W. Przybylinski, A. Lese, and R. Coomer

Recorded presentation

Presentation PDF (1.8 MB)

10:00 AM

6.7

On The Genesis of Bow Echo Mesovortices

Nolan T. Atkins, Lyndon State College, Lyndonville, VT; and M. St. Laurent

Recorded presentation

Coffee Break

Location: Madison Ballroom (Hilton DeSoto)

Session 7A

Tropical Cyclones and Severe Weather

Location: North & Center Ballroom (Hilton DeSoto)

Host: 24th Conference on Severe Local Storms

Chair: Russ S. Schumacher, CSU

10:45 AM

7A.1

Tropical cyclone tornadoes -- A research and forecasting overview. Part 1: Climatologies, distribution and forecast concepts

Roger Edwards, NOAA/NWS/NCEP/Storm Prediction Center, Norman, OK

Recorded presentation

Presentation PDF (136.2 kB)

11:00 AM

7A.2

Composite Distribution and Analysis of Tropical Cyclone Tornadoes: 1950-2005

Lori A. Schultz, University of Alabama, Huntsville, AL ; and D. J. Cecil

Recorded presentation

11:15 AM

7A.3

Reintensification of Tropical Storm Erin (2007) over Oklahoma

Thomas J. Galarneau Jr., NCAR, Boulder, CO; and L. F. Bosart and R. S. Schumacher

Recorded presentation

11:30 AM

7A.4

A high-impact predecessor rain event over the midwest associated with Tropical Storm Erin (2007)

Thomas J. Galarneau Jr., NCAR, Boulder, CO; and L. F. Bosart and R. S. Schumacher

Recorded presentation

11:45 AM

7A.5

Total lightning activity during the re-intensification of Tropical Storm Erin over Oklahoma on 18-19 August 2007

Donald R. MacGorman, NOAA/NSSL, Norman, OK; and T. J. Schuur and M. R. Kumjian

Recorded presentation

Session 7B

Developments in Use of Satellite and Radar Data

Location: South Ballroom (Hilton DeSoto)

Host: 24th Conference on Severe Local Storms

Chair: Lawrence D. Carey, Univ. of Alabama

10:45 AM

7B.1

Experimental, Satellite, Microphysically-Based, Early Alerts of Severe Convective Storms, Part 1: Scientific basis, methodology and its experimental application

Daniel Rosenfeld, The Hebrew University of Jerusalem, Jerusalem, , Israel; and G. Kelman, W. L. Woodley, and J. Golden

Recorded presentation

Presentation PDF (1.5 MB)

11:00 AM

7B.2

Experimental, Satellite, Microphysically-Based, Early Alerts of Severe Convective Storms, Part 2: Evaluation of the Experimental Application

William L. Woodley, Woodley Weather Consultants, Littleton, CO ; and D. Rosenfeld, G. Kelman, and J. Golden

Recorded presentation

11:15 AM

7B.3

Comparing Detection Methods of Deep Convective Clouds in China with AMSU-B and FY-2C

Zhoujie Cheng, Institute of Aviation Meteorology, Beijing, , China; and Y. Zhu, J. Liu, J. Bai, and W. Li

11:30 AM

7B.4

Dual-Doppler wind analysis of convective storms using the vertical vorticity equation

Alan Shapiro, University of Oklahoma, Norman, OK; and C. K. Potvin and J. Gao

Recorded presentation

11:45 AM

7B.5

Identifying critical strengths and limitations of current radar systems

Jennifer F. Newman, National Weather Center REU, Norman, OK, Norman, OK ; and D. LaDue and P. L. Heinselman

Recorded presentation

Presentation PDF (255.5 kB)

Lunch Break

Session 8A

Watches, Warnings, and Decision Making

Location: North & Center Ballroom (Hilton DeSoto)

Host: 24th Conference on Severe Local Storms

Chair: Roger Edwards, NOAA/NWS/NCEP/SPC

1:30 PM

8A.1

The Experimental Warning Program 2008 Spring Experiment at the NOAA Hazardous Weather Testbed

Gregory J. Stumpf, CIMMS/Univ. of Oklahoma and NOAA/NWS/MDL, Norman, OK; and T. M. Smith, K. Manross, and D. L. Andra Jr.

Recorded presentation

Presentation PDF (471.3 kB)

1:45 PM

8A.2

Experimental probabilistic hazard information in practice: Results from the 2008 EWP Spring Program

Kristin M. Kuhlman, CIMMS/Univ. of Oklahoma and NOAA/NSSL, Norman, OK; and T. M. Smith, G. J. Stumpf, K. L. Ortega, and K. L. Manross

Recorded presentation

Presentation PDF (1.7 MB)

2:00 PM

8A.3

Next generation warning products and services

John T. Ferree, NOAA/NWS Office of Climate, Water, and Weather Services, Norman, OK ; and K. A. Scharfenberg

Recorded presentation

2:15 PM

8A.4

Communicating severe local storm information to support decision-making: beyond the watch and the warning

Kevin A. Scharfenberg, NOAA/NWS Office of Climate, Water, and Weather Services, Norman, OK ; and D. L. Andra Jr., S. A. Erickson, J. T. Ferree, and R. S. Schneider

Recorded presentation

2:30 PM

8A.5

Emergency Managers: Weather Communication and Training

Somer A. Erickson, NSSL/NOAA, Norman, OK ; and H. E. Brooks, J. G. LaDue, and H. D. O'Hair

Recorded presentation

8A.6

The response of university students to Severe Weather Watches

2:45 PM

8A.6A

(Formerly P6.8) On the precision of threats in National Weather Service severe weather warnings

Ray A. Wolf, NOAA/NWS, Davenport, IA; and S. Christensen

Recorded presentation

Presentation PDF (291.7 kB)

Session 8B

Near-Surface Tornado Winds and Tornado Damage

Location: South Ballroom (Hilton DeSoto)

Host: 24th Conference on Severe Local Storms

Chair: Robin L. Tanamachi, Univ. of Oklahoma

1:30 PM

8B.1

Using simulated tornado surface marks to help decipher near-ground wind fields

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

Recorded presentation

Presentation PDF (1.1 MB)

1:45 PM

8B.2

Determination of tornado intensity from forest damage

Veronika Beck, Technische Universität München, Garching, Germany; and N. Dotzek

Recorded presentation

Presentation PDF (963.9 kB)

2:00 PM

8B.3

Damage survey and deduction of vortex structure of the Greensburg, KS tornado

Timothy P. Marshall, Haag Engineering Co., Irving, TX; and D. McCarthy, J. G. LaDue, J. Wurman, C. R. Alexander, P. Robinson, and K. A. Kosiba

Recorded presentation

Presentation PDF (1.4 MB)

2:15 PM

8B.4

Deployments of a 12-site in situ Wind/T/RH instrument array in tornadoes

Joshua Wurman, Center for Severe Weather Research, Boulder, CO

Recorded presentation

2:30 PM

8B.5

Derivation of physically motivated wind speed scales - the E-scale concept

Nikolai Dotzek, DLR, Wessling, Germany

Recorded presentation

Presentation PDF (653.2 kB)

2:45 PM

8B.6

Experiences in using the EF-Scale since its inception

James G. LaDue, NOAA/NWS, Norman, OK; and K. L. Ortega

Recorded presentation

Presentation PDF (2.3 MB)

Poster Session 4

Bow Echoes, MCSs, and Mesoscale Processes Posters

Location: Madison Ballroom (Hilton DeSoto)

Host: 24th Conference on Severe Local Storms

P4.1

A case study of a long-lived warm-core circulation in the southern plains during the summer of 2007

Chad M. Shafer, University of Oklahoma, Norman, OK ; and K. H. Goebbert, A. D. Schenkman, and N. Snook

P4.2

Composite RUC analyses of weakly-forced mesoscale convective systems

Jason Hwang, NOAA/NSSL; and D. J. Stensrud and M. C. Coniglio

P4.3

Analysis of the characteristics in a strong convective weather process in China

Li Zuxian, CMA, Changsha, China; and X. Lin

Handout (422.1 kB)

P4.4

The presence of thermal wind balance in MCS environments

Benjamin C. Baranowski, North Carolina State University, Raleigh, NC; and M. D. Parker

P4.5

Processes That Influence The Damaging Potential of Bow Echo Mesovortices

Nolan T. Atkins, Lyndon State College, Lyndonville, VT ; and M. St. Laurent

P4.6

Documentation of the overland reintensification of Tropical Storm Erin over Oklahoma, August 18, 2007

John P. Monteverdi, San Francisco State Univ., San Francisco, CA; and R. Edwards

Handout (821.5 kB)

P4.7

An Observational Investigation of Mesoscale Convective Systems Crossing the Appalachian Mountains

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

Handout (1.7 MB)

P4.8

Simulations of quasi-stationary convective systems occurring within mesoscale convergence and lifting

Russ S. Schumacher, Colorado State University, Fort Collins, CO

P4.9

The impact of an enhanced damage analysis on determining the damaging wind mechanism within the 20 August 2007 bow echo across eastern Nebraska and southwestern Iowa

Jason T. Martinelli, Creighton Univ., Omaha, NE; and V. DeWald, D. Nietfeld, H. Holmes, and R. Caniglia

Handout (1.9 MB)

P4.10

A detailed analysis of vortex characteristics within a tornadic quasi-linear convective system

Pamela M. Murray, Creighton University, Omaha, NE ; and J. Martinelli and J. B. Eylander

P4.11

Convection-resolving simulations of the environment associated with widespread turbulence within the upper-level outflow of a large mesoscale convective system

Stanley B. Trier, NCAR, Boulder, CO; and R. D. Sharman

P4.12

Rapid-scan observations of a bow echo storm with a dual-polarization WSR-88D

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

Handout (1.7 MB)

Poster Session 5

Data Assimilation Posters

Location: Madison Ballroom (Hilton DeSoto)

Host: 24th Conference on Severe Local Storms

P5.1

EnKF data assimilation and dual-Doppler analysis of the 29 May 2004 Geary, Oklahoma supercell

Kristin M. Kuhlman, CIMMS/Univ. of Oklahoma and NOAA/NSSL, Norman, OK; and E. R. Mansell, C. L. Ziegler, M. I. Biggerstaff, D. R. MacGorman, and D. C. Dowell

P5.2

EnKF analysis and forecast predictability of a tornadic supercell Storm

Edward R. Mansell, NOAA/NSSL, Norman, OK ; and L. J. Wicker

Poster Session 6

Forecasting, Warning, and Verification Posters

Location: Madison Ballroom (Hilton DeSoto)

Host: 24th Conference on Severe Local Storms

P6.1

Operational recognition of high precipitation efficiency and low echo centroid convection

Ted M. Ryan, NOAA/NWSFO, Fort Worth, TX; and J. D. Vitale

Handout (1.7 MB)

P6.2

Evaluation of ESTOFEX forecasts: Lightning forecasts

Harold E. Brooks, NOAA/NSSL, Norman, OK; and T. E. Thompson, C. S. Schwartz, C. M. Shafer, P. Marsh, A. Kolodziej, N. Dahl, and D. Buckey

P6.3

Evaluation of ESTOFEX forecasts: Severe thunderstorm forecasts

Harold E. Brooks, NOAA/NSSL, Norman, OK; and T. E. Thompson, C. M. Shafer, C. Schwartz, P. Marsh, A. Kolodziej, N. Dahl, and D. Buckey

P6.4

Anticipating cloud-to-ground lightning initiation and frequency using WSR-88D reflectivity data

Peter Wolf, NOAA/NWS, Jacksonville, FL

P6.5

Evaluating hail diagnosis techniques using high resolution verification

Kiel L. Ortega, Univ. of Oklahoma/CIMMS and NOAA/NSSL, Norman, OK ; and A. G. Kolodziej, J. Young, C. J. Wilson, A. Witt, and T. M. Smith

Handout (580.4 kB)

P6.6

Using maximum storm-top divergence and the vertical freezing level to forecast hail size

Joshua M. Boustead, NOAA/NWS, Topeka, KS

Handout (459.8 kB)

P6.7

Forecasting summertime convection in western North Dakota using RAOB

Daniel A. Brothers, North Dakota Atmospheric Resource Board, Bismarck, ND

Handout (326.6 kB)

P6.8 moved. New paper number 8A.6A

P6.9 has been moved. New paper number 9A.6A

P6.10

New Techniques for Integrating Environmental Information into Radar Base Data Analysis in National Weather Service Warning Decision Making

Michael A. Magsig, NOAA/NWS/WDTB, Norman, OK

Handout (931.0 kB)

Poster Session 7

Weather Hazards, Societal Impacts, and Public Perceptions Posters

Location: Madison Ballroom (Hilton DeSoto)

Host: 24th Conference on Severe Local Storms

P7.1

A constitution for personal flood safety

Jon W. Zeitler, NOAA/NWS/Austin-San Antonio Weather Forecast Office, New Braunfels, TX

Handout (74.9 kB)

P7.2

Assessing middle school and college students' conceptions about tornadoes and other weather phenomena

Elizabeth Polito, San Francisco State Univ., San Francisco, CA ; and K. Tanner and J. P. Monteverdi

Handout (152.5 kB)

P7.3

Vulnerability due to nocturnal tornadoes

Walker S. Ashley, Northern Illinois Univ., DeKalb, IL

Handout (575.4 kB)

P7.4

Non-tornadic convective wind fatalities in the United States

Alan W. Black, University of Georgia, Athens, GA; and W. S. Ashley

Handout (115.7 kB)

Coffee Break and Formal Poster Viewing

Location: Madison Ballroom (Hilton DeSoto)

Session 9A

Forecasting, Warning, and/or Verification

Location: North & Center Ballroom (Hilton DeSoto)

Host: 24th Conference on Severe Local Storms

Chair: Patrick J. McCarthy, MSC

4:30 PM

9A.1

The Research Support Desk (RSD) initiative at Environment Canada: linking severe weather researchers and forecasters in a real-time operational setting

David Sills, EC, Toronto, ON, Canada; and N. M. Taylor

Recorded presentation

Presentation PDF (2.8 MB)

4:45 PM

9A.2

Forecast challenges at the NWS Storm Prediction Center relating to the frequency of favorable severe storm environments

Andrew R. Dean, CIMMS/Univ. of Oklahoma & NOAA/NWS Storm Prediction Center, Norman, OK; and R. S. Schneider

Recorded presentation

Presentation PDF (949.3 kB)

5:00 PM

9A.3

NWS tornado warnings with zero or negative lead times

J. A. Brotzge, CAPS/Univ. of Oklahoma, Norman, OK; and S. A. Erickson

Recorded presentation

9A.4

Graphically depicting local threat assessment and potential impact information during Peninsular Florida tornado situations

5:30 PM

9A.4A

Proximity soundings for the US from global reanalysis data: 1991-1999 (Formerly P12.4)

Jace Bauer, Purdue University, West Lafayette, IN; and H. E. Brooks

Recorded presentation

5:45 PM

9A.5

Storm-based warning verification: a new era in warning verification

Brenton William MacAloney II, NOAA/NWS, Silver Spring, MD

Recorded presentation

9A.6

A Distributions-Oriented Approach to Forecast Verification of SPC

6:15 PM

9A.6A

Effective storm-based warning strategies (Formerly P6.9)

Kevin A. Scharfenberg, NOAA/NWS Office of Climate, Water, and Weather Services, Norman, OK ; and K. R. Cook, J. T. Ferree, B. N. Grant, and J. LaDue

Recorded presentation

Session 9B

Data Assimilation

Location: South Ballroom (Hilton DeSoto)

Host: 24th Conference on Severe Local Storms

Chair: David J. Stensrud, NOAA/NSSL

4:30 PM

9B.1

Impact of high temporal frequency radar data assimilation on storm-scale NWP model simulations

Nusrat Yussouf, Cooperative Institute for Mesoscale Meteorological Studies, Norman, OK; and D. J. Stensrud

Recorded presentation

Presentation PDF (1.3 MB)

4:45 PM

9B.2

Importance of Environmental Variability to Storm-scale Radar Data Assimilation

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

Recorded presentation

Presentation PDF (1.1 MB)

5:00 PM

9B.3

Radar Reflectivity Assimilation for the Hourly RUC and Rapid Refresh

Stephen S. Weygandt, NOAA / ESRL / GSD, Boulder, CO; and S. G. Benjamin and J. M. Brown

Recorded presentation

9B.4

A multi-case comparative assessment of storm-scale ensemble forecasts initialized with ensemble Kalman filter radar-data assimilation

5:30 PM

Presentation P5.2 to elaborate during this time.

5:45 PM

9B.5

The Impact of Assimilating Surface Pressure Tendency Observations on Severe Weather Events in a WRF Mesoscale Ensemble System

Dustan M. Wheatley, NOAA/NSSL, Norman, OK ; and D. J. Stensrud

6:00 PM

9B.6

Analysis of MCV Tornadoes through Storm-scale Data Assimilation and Simulations

Alexander D. Schenkman, University of Oklahoma, Norman, OK; and M. Xue, A. Shapiro, K. Brewster, and J. Gao

Presentation PDF (2.8 MB)

Session

Video Night I

Location: North & Center Ballroom (Hilton DeSoto)

Host: 24th Conference on Severe Local Storms

Session 10

Mesoscale Processes and Modeling

Location: North & Center Ballroom (Hilton DeSoto)

Host: 24th Conference on Severe Local Storms

Chair: Paul M. Markowski, Penn State University

8:00 AM

10.1

Evaluation of the theoretical speed and depth of gravity currents using three-dimensional numerical simulations

George H. Bryan, NCAR, Boulder, CO

Recorded presentation

Presentation PDF (272.4 kB)

8:15 AM

10.2

A numerical investigation of the effects of dry air aloft on quasi-linear convective systems

Richard James, The Pennsylvania State University, University Park, PA ; and P. Markowski

Recorded presentation

Presentation PDF (2.8 MB)

8:30 AM

10.3

Response of nocturnal convective systems to low-level jets and morning surface heating

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

Recorded presentation

Presentation PDF (2.3 MB)

Session 11

Numerical Weather Prediction I

Location: North & Center Ballroom (Hilton DeSoto)

Host: 24th Conference on Severe Local Storms

Chair: Paul M. Markowski, Penn State University

8:45 AM

11.1

Convection Forecasts from the Hourly Updated, 3-km High Resolution Rapid Refresh Model

Tracy Lorraine Smith, NOAA/ESRL/GSD and CIRA, Boulder, CO ; and S. G. Benjamin, J. M. Brown, S. S. Weygandt, T. Smirnova, and B. E. Schwartz

Recorded presentation

Presentation PDF (1.7 MB)

9:00 AM

11.2

Evaluation of WRF forecasts of tornadic and nontornadic outbreaks occurring in the spring and fall when initialized with synoptic-scale input

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

Recorded presentation

9:15 AM

11.3

Severe storm forecast guidance based on explicit identification of convective phenomena in WRF-model forecasts

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

Recorded presentation

Presentation PDF (862.8 kB)

9:30 AM

11.4

Predictability of mesoscale convective systems in two- and three-dimensional models

Matthew S. Wandishin, Univ. of Arizona and NSSL, Norman, OK ; and D. J. Stensrud, L. J. Wicker, and S. L. Mullen

Recorded presentation

9:45 AM

11.5

High resolution numerical modelling of deep moist convective processes: turbulent parameterizations and grid-scale effects

Elisabetta Fiori, CIMA Research Foundation, Savona, , Italy; and A. Parodi and F. Siccardi

Recorded presentation

Coffee Break

Location: Madison Ballroom (Hilton DeSoto)

Session 12

Numerical Weather Prediction II

Location: North & Center Ballroom (Hilton DeSoto)

Host: 24th Conference on Severe Local Storms

Chair: Stephen S. Weygandt, NOAA/ESRL/GSD

10:30 AM

12.1

(Invited Talk) Severe-weather forecast guidance from the first generation of large domain convection-allowing models: Challenges and opportunities

John S. Kain, NOAA/NSSL, Norman, OK; and S. J. Weiss, S. R. Dembek, J. J. Levit, D. R. Bright, J. L. Case, M. Coniglio, A. R. Dean, R. Sobash, and C. S. Schwartz

Recorded presentation

Presentation PDF (2.2 MB)

11:00 AM

12.2

CAPS Realtime Storm-scale Ensemble and High-resolution Forecasts as Part of the NOAA Hazardous Weather Testbed 2008 Spring Experiment

Ming Xue, CAPS/Univ. of Oklahoma, Norman, OK ; and F. Kong, K. Thomas, J. Gao, Y. Wang, K. Brewster, K. Droegemeier, J. S. Kain, S. J. Weiss, D. Bright, M. C. Coniglio, and J. Du

Recorded presentation

Presentation PDF (1.8 MB)

11:15 AM

12.3

Real-Time Storm-Scale Ensemble Forecast 2008 Spring Experiment

Fanyou Kong, CAPS/Univ. of Oklahoma, Norman, OK; and M. Xue, K. K. Droegemeier, K. Thomas, Y. Wang, J. S. Kain, S. J. Weiss, D. R. Bright, and J. Du

Recorded presentation

Presentation PDF (380.0 kB)

11:30 AM

12.4

Evaluation of WRF model output for severe-weather forecasting from the 2008 NOAA Hazardous Weather Testbed Spring Experiment

Michael C. Coniglio, NOAA/NSSL, Norman, OK ; and J. S. Kain, S. J. Weiss, D. R. Bright, J. J. Levit, G. W. Carbin, K. W. Thomas, F. Kong, M. Xue, M. L. Weisman, and M. E. Pyle

Recorded presentation

Presentation PDF (2.5 MB)

11:45 AM

12.5

Explicit forecasting of bow echoes/derechoes with the WRF-ARW model

Morris L. Weisman, NCAR, Boulder, CO ; and W. Wang and K. Manning

Lunch Break

Session 13A

Ensemble Forecasts of Severe Weather

Location: North & Center Ballroom (Hilton DeSoto)

Host: 24th Conference on Severe Local Storms

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

1:30 PM

13A.1

Utility of Short-Range Ensemble Forecast (SREF) guidance for forecasting the development of severe convection

Jared L. Guyer, NOAA/NWS/NCEP/SPC, Norman, OK ; and D. R. Bright

Recorded presentation

Presentation PDF (352.6 kB)

1:45 PM

13A.2

Utilizing Short Range Ensemble Point Forecast Soundings for Severe Storms Forecasting

Jason J. Levit, NOAA/NWS/NCEP/SPC, Norman, OK ; and J. Hart, R. S. Schneider, D. R. Bright, and R. L. Thompson

Recorded presentation

Presentation PDF (93.3 kB)

2:00 PM

13A.3

Using Short Range Ensemble Forecasts and High Resolution Model Guidance to Assess the Potential for Tornadoes across Southeast Virginia on 28 April 2008

Josh Korotky, NOAA/NWS, Pittsburgh, PA; and R. Grumm

Recorded presentation

Presentation PDF (513.7 kB)

2:15 PM

13A.4

Ensemble forecasts of severe convective events during spring 2007: Improvements from surface data assimilation using an ensemble Kalman filter

David J. Stensrud, NOAA/NSSL, Norman, OK; and N. Yussouf and D. C. Dowell

Recorded presentation

2:30 PM

13A.5

Ensemble forecasts of severe convective storms

David C. Dowell, NOAA/ESRL/GSD, Boulder, CO; and D. J. Stensrud

Recorded presentation

2:45 PM

13A.6

Toward improved convection-allowing ensembles: Model physics sensitivities and optimizing probabilistic guidance with small ensemble membership

Craig S. Schwartz, School of Meteorology, University of Oklahoma, Norman, OK ; and J. S. Kain, D. R. Bright, S. J. Weiss, M. Xue, F. Kong, J. J. Levit, M. C. Coniglio, and M. S. Wandishin

Recorded presentation

Presentation PDF (1.5 MB)

Session 13B

Cool Season and Non-Convective Severe Weather

Location: South Ballroom (Hilton DeSoto)

Host: 24th Conference on Severe Local Storms

Chair: Jenni Rauhala, Finnish Meteorological Institute

1:30 PM

13B.1 moved. New paper number P8.7

1:31 PM

13B.2

Analysis of cross-spectrum supercells during the north Georgia tornado event of 2 January 2006

Trisha D. Palmer, NOAA/NWSFO, Peachtree City, GA; and B. A. Miller, L. P. Rothfusz, and S. E. Nelson

Recorded presentation

Presentation PDF (1.3 MB)

1:45 PM

13B.3

The 17 February 2006 Severe Weather and High Wind Event across Eastern New York and New England

Thomas A. Wasula, NOAA/NWS, Albany, NY; and A. Wasula and N. A. Stuart

Recorded presentation

Presentation PDF (1001.6 kB)

2:00 PM

13B.4

Evolution of a Wintertime Pacific Northwest Mini-Supercell and Tornado

David Elson, NOAA/NWSFO, Portland, OR; and J. Wolfe, C. Dalton, and W. R. Schneider

Recorded presentation

Presentation PDF (1.1 MB)

2:15 PM

13B.5

Non-convective high wind events: a climatology for the Great Lakes region

John A. Knox, Univ. of Georgia, Athens, GA; and M. C. Lacke, J. D. Frye, A. E. Stewart, J. D. Durkee, C. M. Fuhrmann, and S. M. Dillingham

Recorded presentation

Presentation PDF (131.5 kB)

2:30 PM

13B.6

Structure and characteristics of long lake axis-parallel lake-effect storms

Scott M. Steiger, SUNY, Oswego, NY; and R. J. Ballentine

Recorded presentation

Presentation PDF (1.7 MB)

2:45 PM

13B.7

The climatology, convective mode, and mesoscale environment of cool season severe thunderstorms in the Ohio and Tennessee Valleys, 1995-2006

Bryan T. Smith, NOAA/NWS/NCEP/SPC, Norman, OK; and J. L. Guyer and A. R. Dean

Recorded presentation

Presentation PDF (291.5 kB)

Poster Session 8

Cool Season and Non-Convective Severe Weather Posters

Host: 24th Conference on Severe Local Storms

P8.1 moved. New paper number 13B.6

P8.2

Cool season tornadoes in the southeast U.S

Stephen B. Konarik, NOAA/NWSFO, Peachtree City, GA; and S. E. Nelson

Handout (139.5 kB)

P8.3

An Examination of the Areal Extent of High Winds due to Mountain Waves along the Western Foothills of the Southern Appalachian Mountains

David M. Gaffin, NOAA/NWSFO, Morristown, TN

Handout (1.8 MB)

P8.4

Mesoscale analysis of wintertime nonmesocyclone tornadogenesis in northwest Texas: 27 December 2007

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

P8.5

Severe Local Coastal Storms: New Perspectives on Frequency, Intensity and Impacts

P8.6

A diagnostic study of non-convective high winds in the 12-13 November 2003 Great Lakes cyclone

Christopher M. Fuhrmann, NOAA-Southeast Regional Climate Center and Univ. of North Carolina, Chapel Hill, NC ; and J. D. Durkee, J. A. Knox, S. M. Dillingham, J. D. Frye, A. E. Stewart, and M. C. Lacke

P8.7

2007-2008 Cool season tornado climatology (Formerly 13B.1)

Madison Lindsay Burnett, National Weather Center Research Experiences for Undergraduates Program, Norman, OK; and G. W. Carbin and J. T. Schaefer

Handout (132.8 kB)

Poster Session 9

Event Case Studies Posters

Location: Madison Ballroom (Hilton DeSoto)

Host: 24th Conference on Severe Local Storms

P9.1

Analysis of the characteristics in a Supercell Storm event in China

Huang Xiaoyu, CMA, Changsha, China

Handout (563.0 kB)

P9.2

Analysis of the characteristics in a typical thunderstorm gale event in south China

Ye Chengzhi, CMA, Changsha, China

Handout (630.0 kB)

P9.3

A Comparison of Two Lake Breeze Severe Events with a Threat Chart Application

Thomas A. Wasula, NOAA/NWS, Albany, NY; and P. Wilson, L. F. Bosart, D. Keyser, and R. L. Tracey

Handout (2.5 MB)

P9.4

WRF-enabled diagnosis of the 12 March 2006 severe weather outbreak

Anthony E. Reinhart, University of Nebraska-Lincoln, Lincoln, NE; and R. J. Trapp

Handout (128.6 kB)

P9.5

The development of tornadic storms near a surface warm front in England

Pieter Groenemeijer, Institute for Meteorology and Climate Research, Karlsruhe Institute of Technology, Karlsruhe, , Germany; and U. Corsmeier and C. Kottmeier

P9.6

Radar observations of a tornadic severe frontal rainband

Jenni Rauhala, Finnish Meteorological Institute, Helsinki, Finland; and A. J. Punkka

Handout (686.2 kB)

P9.7

The 25 May 2008 Hugo, Minnesota EF-3 Tornado: supercell tornadogenesis in the presence of an apparently cold rear flank downdraft

Thomas R. Hultquist, NOAA/NWS, Chanhassen, MN

Handout (1.2 MB)

P9.8

The southwest Ohio minisupercell tornado outbreak of 11 July 2006. Part II: Investigation into rear-flank downdraft formation and its relation to tornadogenesis

Daniel Hawblitzel, NOAA/NWSFO, Wilmington, OH

Handout (1.8 MB)

P9.9

The southwest Ohio mini-supercell tornado outbreak of 11 July 2006. Part I: Mesoscale and radar analysis

Daniel Hawblitzel, NOAA/NWSFO, Wilmington, OH

Handout (2.8 MB)

P9.10

Elie, Manitoba, Canada, June 22, 2007: Canada's first F5 tornado

Patrick J. McCarthy, MSC, Winnipeg, MB, Canada; and D. Carlsen and J. Slipec

Handout (592.9 kB)

P9.11

An analysis of the 22 May 2008 Windsor, Colorado, tornado

Daniel T. Lindsey, NOAA/NESDIS, Fort Collins, CO; and S. D. Miller, J. Braun, and D. Bikos

Handout (492.1 kB)

P9.12

Tornadic convection in the New York City Metropolitan Region: The 8 August 2007 event and a composite analysis

Brian A. Colle, Stony Brook University / SUNY, Stony Brook, NY; and K. Lombardo, J. S. Tongue, W. Goodman, and N. Vaz

P9.13

Super-resolution polarimetric observations of a cyclic tornadic supercell

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

Handout (2.6 MB)

P9.14

An examination of radar and lightning characteristics of the “Atlanta Tornado” of March 14-15, 2008

John M. Trostel, Georgia Tech Research Institute, Atlanta, GA; and J. L. Matthews, C. Coyle, and N. W. S. Demetriades

Handout (3.0 MB)

P9.15

Mesoscale Aspects of the 11 March 2006 Severe Weather Outbreak

Fred H. Glass, NOAA/NWSFO, St. Charles, MO

Handout (1.2 MB)

P9.16

Terminal Doppler Weather Radar observation of a cyclic tornado supercell

P9.17

A case study of the 15 March 2008 South Carolina supercell outbreak

David A. Glenn, NOAA/NWSFO Columbia, South Carolina, West Columbia, SC ; and H. Coleman, A. W. Petrolito, and M. W. Cammarata

Poster Session 10

Numerical Modeling and Weather Prediction Posters

Location: Madison Ballroom (Hilton DeSoto)

Host: 24th Conference on Severe Local Storms

P10.1

P10.1 moved. New paper number 14.5A

P10.2

Evaluation of WRF forecasts of tornadic and nontornadic outbreaks when initialized with synoptic-scale input: The utility of “base-state” parameters

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

P10.3

Next-day convection-allowing WRF model guidance: A second look at 2- vs. 4-km grid spacing

Craig S. Schwartz, School of Meteorology, University of Oklahoma, Norman, OK ; and J. S. Kain, S. J. Weiss, D. R. Bright, M. Xue, F. Kong, K. W. Thomas, J. J. Levit, and M. C. Coniglio

Handout (1.8 MB)

P10.4

Forecasting of floods using combined nowcasting, mesoscale NWP and hydrological models

Geoffrey L. Austin, Univ. of Auckland, Auckland, New Zealand; and B. Austin, L. S. Stacey, and P. I. Shucksmith

P10.5

The NOAA Hazardous Weather Testbed 2008 Spring Experiment: Technical and Scientific Challenges of Creating a Data Visualization Environment for Storm-Scale Deterministic and Ensemble Forecasts

Jason J. Levit, NOAA/NWS/NCEP/SPC, Norman, OK; and G. W. Carbin, D. R. Bright, J. S. Kain, S. J. Weiss, R. S. Schneider, M. C. Coniglio, M. Xue, K. W. Thomas, M. Pyle, and M. L. Weisman

Handout (194.6 kB)

P10.6

The dependence of high-precipitation supercells on preexisting airmass boundaries: a targeted modeling study

Jennifer M. Brown, Univ. of Nebraska-Lincoln, Lincoln, NE; and A. L. Houston

Handout (81.6 kB)

P10.7

The evolution of multi-scale ensemble guidance in the prediction of convective and severe convective storms at the Storm Prediction Center

David R. Bright, NOAA/NWS/NCEP/SPC, Norman, OK; and S. J. Weiss, J. J. Levit, and R. S. Schneider

Handout (2.7 MB)

P10.8

The operational High Resolution Window WRF model runs at NCEP: Advantages of multiple model runs for severe convective weather forecasting

Steven J. Weiss, NOAA/NWS/NCEP/SPC, Norman, OK ; and M. E. Pyle, Z. Janjic, D. R. Bright, J. S. Kain, and G. J. DiMego

Handout (1.0 MB)

P10.9

Persistent low level mesocyclones in simulated supercell thunderstorms

Leigh Orf, Central Michigan Univ., Mount Pleasant, MI; and G. H. Bryan, R. Rotunno, M. L. Weisman, and H. B. Bluestein

P10.10

Impact of spatially varying inversion strength on the evolution of a simulated supercell storm

Conrad L. Ziegler, NOAA/NSSL, Norman, OK ; and E. R. Mansell, J. M. Straka, D. R. MacGorman, and D. W. Burgess

P10.11

Cell interaction, supercell behavior and tornadogenesis

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

Coffee Break and Formal Poster Viewing

Location: Madison Ballroom (Hilton DeSoto)

Session

Riverboat Cruise and Banquet Dinner

Host: 24th Conference on Severe Local Storms

Session 14

Numerical Modeling: Tornadoes and Tornadogenesis

Location: North & Center Ballroom (Hilton DeSoto)

Host: 24th Conference on Severe Local Storms

Chair: George H. Bryan, NCAR

8:30 AM

14.1

On the role of descending rain curtains in tornadogenesis

Amanda K. Kis, School of Meteorology, University of Oklahoma, Norman, OK ; and J. M. Straka and K. M. Kanak

Recorded presentation

Presentation PDF (1.9 MB)

8:45 AM

14.2

Descending Reflectivity Cores in a simulated supercell

Leigh Orf, Central Michigan Univ., Mount Pleasant, MI; and M. S. Gilmore, J. M. Straka, R. B. Wilhelmson, L. J. Wicker, and E. N. Rasmussen

Recorded presentation

Presentation PDF (2.3 MB)

9:00 AM

14.3 moved. New poster number P10.11

9:01 AM

Presentation 17B.4 to elaborate during this time.

9:15 AM

14.4

Numerical simulation of a tornadogenesis in a mini-supercell associated with Typhoon Shanshan on 17 September 2006

Wataru Mashiko, MRI, Tsukuba, , Japan; and H. Niino and T. Kato

Recorded presentation

Presentation PDF (1.2 MB)

14.5

Understanding the balance of forces in a long-lived simulated supercell-spawned tornado

9:45 AM

14.5A

Effect of the lower boundary condition on tornado intensity in an axisymmetric, constant-viscosity, closed model of tornadogenesis 14.5

Robert Davies-Jones, NOAA/NSSL, Norman, OK

Recorded presentation

Presentation PDF (861.0 kB)

10:00 AM

14.6

The dependence of tornado corner flow dynamics on the outer core flow ‎

Karen A. Kosiba, Purdue Univ., West Lafayette, IN ; and R. J. Trapp

10:15 AM

14.7

High Resolution Real-Data Simulations of the 3 May 1999 Tornadic Storms with Multi-Moment Microphysics

Daniel T. Dawson II, CAPS/Univ. of Oklahoma, Norman, OK

Recorded presentation

Coffee Break

Location: Madison Ballroom (Hilton DeSoto)

Session 15

Numerical Modeling: Storm and Environment

Location: North & Center Ballroom (Hilton DeSoto)

Host: 24th Conference on Severe Local Storms

Chair: Catherine A. Finley, WindLogics Inc.

10:30 AM

15.1

The role of near-surface wind shear on low-level mesocyclone generation and tornadoes: Renascentia

Louis J. Wicker, NOAA/NSSL, Norman, OK

10:45 AM

15.2

Storm-relative flow and its relationship to low-level vorticity in simulated storms

Cody Kirkpatrick, University of Alabama in Huntsville, Huntsville, AL ; and E. W. McCaul Jr.

Recorded presentation

Presentation PDF (180.4 kB)

11:00 AM

15.3

The effect of variations in low level thermodynamic structure on the rear flank downdraft of simulated supercells

Jason A. Naylor, University of North Dakota, Grand Forks, ND ; and M. A. Askelson

Recorded presentation

Presentation PDF (616.5 kB)

11:15 AM

15.4

The effects of thermodynamic variability on low-level baroclinity and vorticity within numerically simulated supercell thunderstorms

Jeffrey Beck, Texas Tech Univ., Lubbock, TX; and C. C. Weiss

Recorded presentation

Presentation PDF (1.2 MB)

11:30 AM

15.5

The effects of varying low-level, environmental stability on low-level rotation in numerical simulations of elevated supercells

Christopher J. Nowotarski, Pennsylvania State University, University Park, PA; and P. M. Markowski

Recorded presentation

Presentation PDF (2.6 MB)

11:45 AM

15.6

Bridging the gap between observed and simulated supercell cold pool characteristics

Glen S. Romine, Univ. of Illinois, Urbana, IL; and D. C. Dowell and R. B. Wilhelmson

Recorded presentation

Lunch Break

Session 16A

Severe Weather Climatology I

Location: North & Center Ballroom (Hilton DeSoto)

Host: 24th Conference on Severe Local Storms

Chair: Philip N. Schumacher, NOAA/NWS

1:30 PM

16A.1

On the relationship between preliminary and final tornado counts in the SPC database

Harold E. Brooks, NOAA/NSSL, Norman, OK; and G. W. Carbin

Recorded presentation

1:45 PM

16A.2

Re-creation of historic Iowa EF-5 tornado environments using high-resolution workstation WRF output initialized with NCEP Reanalysis grids

Karl Jungbluth, NOAA/NWS, Des Moines, IA

Recorded presentation

Presentation PDF (2.5 MB)

2:00 PM

16A.3

Synoptic environments and convective modes associated with significant tornadoes in the contiguous United States

Richard L. Thompson, NOAA/NWS/NCEP, Norman, OK ; and J. S. Grams and J. Prentice

Recorded presentation

Presentation PDF (702.5 kB)

2:15 PM

16A.4

A Comprehensive 5-year Severe Storm Environment Climatology for the Continental United States

Russell S. Schneider, NOAA/NWS Storm Prediction Center, Norman, OK; and A. R. Dean

Recorded presentation

Presentation PDF (555.5 kB)

2:30 PM

16A.5

Climatology of high lapse rates over North America (1974–2007)

Jason M. Cordeira, Univ. of Albany/SUNY, Albany, NY; and T. J. Galarneau Jr. and L. F. Bosart

Recorded presentation

2:45 PM

16A.6

Climatology of storm reports relative to upper-level jet streaks

Adam J. Clark, Iowa State University, Ames, IA; and C. J. Schaffer, W. A. Gallus Jr., and K. Johnson-O'Mara

Recorded presentation

Presentation PDF (855.4 kB)

Session 16B

New Techniques and Technologies

Location: South Ballroom (Hilton DeSoto)

Host: 24th Conference on Severe Local Storms

Chair: Alan Shapiro, University of Oklahoma

1:30 PM

16B.1

Evaluation of a new multiple-Doppler tornado detection and characterization technique using real radar observations

Corey K. Potvin, University of Oklahoma, Norman, OK; and A. Shapiro, T. Y. Yu, J. Gao, and M. Xue

Presentation PDF (804.0 kB)

1:45 PM

16B.2

Attenuation correction techniques and hydrometeor classification of high-resolution, X-band, dual-polarized mobile radar data of severe convective storms

Jeffrey C. Snyder, Univ. of Oklahoma, Norman, OK; and H. B. Bluestein, G. Zhang, S. J. Frasier, and K. Hardwick

2:00 PM

16B.3

Improved thunderstorm detection, tracking and assessment products for Environment Canada radars

Dave Patrick, Meteorological Service of Canada, Winnipeg, MB, Canada; and P. J. McCarthy

Presentation PDF (2.8 MB)

2:15 PM

16B.4

Objective global mapping of hailstorms by satellite

Daniel J. Cecil, University of Alabama in Huntsville, Huntsville, AL

2:30 PM

16B.5

Improving above-surface water vapor analyses using satellite and RUC data

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

Presentation PDF (664.5 kB)

2:45 PM

16B.6

Emerging technologies in the field in support of operations and research

Scott F. Blair, NOAA/NWS, Pleasant Hill, MO; and A. E. Pietrycha, T. J. Allison, D. R. Deroche, and R. V. Fritchie

Presentation PDF (962.7 kB)

Poster Session 11

Convection Initiation Posters

Location: Madison Ballroom (Hilton DeSoto)

Host: 24th Conference on Severe Local Storms

P11.1

Environmental conditions favorable for the initiation of nocturnal convection over the eastern plains

Philip N. Schumacher, NOAA/NWS, Sioux Falls, SD; and J. A. Chapman, M. Dux, and R. A. Weisman

P11.2

Using Canadian GEM output for forecasts of convective initiation on the Canadian prairies: experimental techniques under development in the Hydrometeorology and Arctic Lab (HAL)

P11.3

The emerging role of inertial instability in the initiation and organization of convection

Russ S. Schumacher, Colorado State University, Fort Collins, CO ; and J. A. Knox and D. M. Schultz

Poster Session 12

Severe Weather Climatology Posters

Location: Madison Ballroom (Hilton DeSoto)

Host: 24th Conference on Severe Local Storms

P12.1

Identification of Subtle Factors that Result in the Development of Persistent Severe Storms near Upper Level Ridges

Kenneth R. Widelski, NOAA/NWS, Sterling, VA; and T. T. Lindley

P12.2

Regional variablity of CAPE and deep shear from reanalysis

Victor Gensini, National Weather Center REU Program, Dekalb, IL

P12.3

Research Progress of Disastrous Weather and PoSCWF in China

Bing Zhou, FSL/NMC/CMA, Beijing, China

P12.4 moved. New paper number 9A.4A

P12.5

Characteristics of eastern Australian-western Tasman Sea enhanced-Vs and their connection to severe weather

Geoffrey Feren, Bureau of Meteorology, Melbourne, Victoria, Australia

Handout (1.1 MB)

P12.6

A radar based climatology of thunderstorms in the Great Plains: Approach and preliminary results

Alexander R. Gibbs, NOAA/NWSFO, Peachtree City, GA; and A. L. Houston and J. Lahowetz

Handout (89.6 kB)

P12.7

A synoptic climatology of high impact events in the county warning area of the National Weather Service Forecast Office in Charleston, South Carolina

Frank Alsheimer, NOAA/NWSFO, North Charleston, SC; and J. Jelsema, B. L. Lindner, J. Johnson, D. Timmons, and T. Rolfson

Handout (2.4 MB)

P12.8

Synoptic environments associated with tornadoes in northern Arizona

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

Handout (2.1 MB)

P12.9

Observational study on the pre-monsoon rain over Bangladesh

Masashi Kiguchi, IIS, Univ. of Tokyo, Japan, Meguro-ku, Tokyo, Japan; and Y. Yamane, N. Eguchi, T. Hayashi, and T. Oki

Handout (1.4 MB)

P12.10

The utility of severe weather parameters in the discrimination of tornadic and nontornadic outbreaks when analyzing reanalysis data: Emphasis on support vector machines

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

P12.11

Composite analysis of severe weather outbreaks

Andrew E. Mercer, CIMMS/Univ. of Oklahoma, Norman, OK; and C. M. Shafer, C. A. Doswell III, L. M. Leslie, and M. Richman

P12.12

Statistical Analysis on Severe Convective Weather combining satellite, conventional observation and NCEP data

Yaping Zhu, Institute of Aviation Meteorology, Beijing, , China; and J. Liu, Z. Cheng, and Y. Li

Handout (204.7 kB)

P12.13

Assessing the impact of proximity sounding criteria on the climatological significant tornado environment

Corey K. Potvin, University of Oklahoma, Norman, OK; and K. L. Elmore and S. J. Weiss

Handout (339.2 kB)

P12.14

A Sounding-Derived Climatology of Significant Tornado Events in the Greenville-Spartanburg, South Carolina County Warning Area (1948-2006)

Justin D. Lane, NOAA/NWSFO, Greer, SC

Handout (271.2 kB)

P12.15

Sounding-derived Parameters Associated with Thunderstorm during Summer Period over South Korea

Hyo-Sik Eom, Dept. of Atmospheric Science, Kongju Nat'l Univ., Kongju, , Korea, Republic of (South); and M. S. Suh

Handout (3.0 MB)

P12.16

Toward attribution of interannual variations in tornado frequency to regional atmospheric circulations

P12.17

Statistical characteristics of storm tracks in North Dakota

Victoria Le, Department of Geography, University of Western Ontario, London, ON , Canada; and J. Braun and C. Miller

P12.18

Synoptic-scale flow patterns associated with high lapse rates over North America

Jason M. Cordeira, Univ. of Albany/SUNY, Albany, NY; and T. J. Galarneau Jr. and L. F. Bosart

Poster Session 13

State of the Art Instrumentation and New Analysis Techniques Posters

Location: Madison Ballroom (Hilton DeSoto)

Host: 24th Conference on Severe Local Storms

P13.1

An Automatic Tracking and Recognition Algorithm for Thunderstorm Cloud-Cluster (TRACER)

Lan Hongping, Shenzhen Meteorological Observatory, Shenzhen, China

Handout (168.3 kB)

P13.2

Spring 2008 real-time phased array radar experiment

Pamela L. Heinselman, NOAA/NSSL, Norman, OK

Handout (1.1 MB)

P13.3

Kinetmatic and thermodynamic variability in the supercell environment observed using StickNet

Joel A. Dreessen, Texas Tech University, Lubbock, TX; and C. C. Weiss

Handout (696.3 kB)

P13.4

Validation of dual-Doppler analysis methods for a "tornadic" supercell

Michael I. Biggerstaff, Univ. of Oklahoma, Norman, OK; and R. M. May, C. L. Ziegler, M. Xue, G. D. Carrie, D. P. Betten, K. M. Kuhlman, and D. R. MacGorman

P13.5

The UMass Mobile W-Band Doppler Radar: System Overview and Sample Observations

Pei S. Tsai, University of Massachusetts, Amherst, MA ; and S. J. Frasier, R. L. Tanamachi, and H. B. Bluestein

Handout (504.2 kB)

P13.6

Rapid-Scan Mobile Radar 3D GBVTD and traditional analysis of tornadogenesis

Joshua Wurman, Center for Severe Weather Research, Boulder, CO; and P. Robinson, W. Lee, C. R. Alexander, and K. A. Kosiba

Handout (2.8 MB)

P13.7

3D GBVTD analysis of the Spencer, South Dakota (1998) Tornado

Joshua Wurman, Center for Severe Weather Research, Boulder, CO; and C. R. Alexander, Y. P. Richardson, P. Robinson, and W. Lee

P13.8

Techniques for Automatically Geonavigating Photos

Michael A. Magsig, NOAA/NWS/WDTB, Norman, OK

P13.9

Unmanned aircraft observations of airmass boundaries: The Collaborative Colorado-Nebraska Unmanned Aircraft System Experiment

Adam L. Houston, University of Nebraska, Lincoln, NE; and B. Argrow, J. Elston, and J. Lahowetz

Handout (804.5 kB)

Poster Session 14

Theory of Deep, Moist Convection Posters

Location: Madison Ballroom (Hilton DeSoto)

Host: 24th Conference on Severe Local Storms

P14.2

Interpretation of the "flying eagle" radar signature in supercells

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

Handout (2.0 MB)

P14.3

Energetics of an air mass thunderstorm

Lindsey T. Ritchie, Penn State University, University Park, PA ; and P. R. Bannon

P14.4

The effects of ambient wind shear and varying initial conditions on numerically simulated mammatus-like clouds

Katharine M. Kanak, School of Meteorology, University of Oklahoma, Norman, OK ; and J. M. Straka

Handout (2.3 MB)

P14.5

Gravity waves and forcing efficiency

Jeffrey M. Chagnon, University of Reading, UK, Reading, Berkshire, United Kingdom

P14.6

Modernizing how we classify thunderstorms? An Operationally Useful Thunderstorm Classification Scheme

James G. LaDue, NOAA/NWS, Norman, OK; and D. S. LaDue

Handout (1.8 MB)

P14.1

Cooked boundaries: Preliminary results from numerical experiments

Anthony E. Reinhart, University of Nebraska-Lincoln, Lincoln, NE; and A. L. Houston

Handout (195.6 kB)

Coffee Break and Formal Poster Viewing

Location: Madison Ballroom (Hilton DeSoto)

Session 17A

Severe Weather Climatology II

Location: North & Center Ballroom (Hilton DeSoto)

Host: 24th Conference on Severe Local Storms

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

4:30 PM

17A.1

A climatology of the spatial and temporal distribution of convection over the Northeast United States

John Murray, Stony Brook University - SUNY, Stony Brook, NY ; and B. A. Colle

Recorded presentation

4:45 PM

17A.2

A climatology of convective system morphology over the Northeast United States

Kelly Lombardo, Stony Brook University - SUNY, Stony Brook, NY ; and B. A. Colle

Recorded presentation

5:00 PM

17A.3

Synoptic-scale convective environment climatology by ENSO phase in the north central U.S

Barbara E. Mayes, NOAA/NWS, Valley; and J. M. Boustead, J. S. Boyne, G. R. Lussky, C. Cogil, and R. S. Ryrholm

Recorded presentation

Presentation PDF (1.6 MB)

5:15 PM

17A.4

Supercells of the Serranías del Burro

Joshua D. Weiss, University of Massachusetts Lowell, Lowell, MA; and J. W. Zeitler

Recorded presentation

Presentation PDF (536.0 kB)

5:30 PM

17A.5

Development of a radar based thunderstorm climatology for North Dakota

Faizul Mohee, University of Western Ontario, London, ON , Canada; and C. Miller

Recorded presentation

Presentation PDF (405.0 kB)

5:45 PM

17A.6

Characteristics of sub-diurnal extreme precipitation-producing systems

Nathan M. Hitchens, NOAA/NSSL, Norman, OK; and R. J. Trapp, M. E. Baldwin, and A. Gluhovsky

Recorded presentation

Session 17B

Numerical Modeling: Microphysics, Radiation, and Environmental Variability

Location: South Ballroom (Hilton DeSoto)

Host: 24th Conference on Severe Local Storms

Chair: Leigh Orf, Central Michigan Univ.

4:30 PM

17B.1

The dynamical influences of cloud shading on simulated supercell thunderstorms

Jeffrey Frame, Penn State University, University Park, PA; and P. M. Markowski and J. Petters

Presentation PDF (645.3 kB)

4:45 PM

17B.2

Numerical simulations of supercells in convective boundary layers

Kent H. Knopfmeier, Pennsylvania State University, University Park, PA; and P. M. Markowski and Y. P. Richardson

Presentation PDF (1.1 MB)

5:00 PM

17B.3

The Super Tuesday outbreak: forecast sensitivities to single-moment microphysics schemes

Andrew L. Molthan, University of Alabama Huntsville, Huntsville, AL; and J. L. Case, S. R. Dembek, G. J. Jedlovec, and W. M. Lapenta

Presentation PDF (2.3 MB)

5:15 PM

17B.4

Improvements in the treatment of evaporation and melting in multi-moment versus single-moment bulk microphysics: results from numerical simulations of the 3 May 1999 Oklahoma tornadic storms

Daniel T. Dawson II, CAPS/Univ. of Oklahoma, Norman, OK; and M. Xue and J. A. Milbrandt

Presentation PDF (1.3 MB)

5:30 PM

17B.5

Worldwide microphysical thunderstorm variability in different climatic regions: a three-dimensional cloud modeling study

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

Presentation PDF (795.4 kB)

5:45 PM

17B.6

DNS on growth of a vertical vortex in convection due to external forces

Ryota Iijima, Tokyo Institute of Technology, Yokohama, , Japan; and T. Tamura

Presentation PDF (856.5 kB)

Session 18

Convection Initiation

Location: North & Center Ballroom (Hilton DeSoto)

Host: 24th Conference on Severe Local Storms

Chair: Matthew D. Parker, North Carolina State Univ.

8:00 AM

18.1

A modelling study of the initiation and development of an isolated thunderstorm in CSIP IOP1

Humphrey W. Lean, Met Office, Reading, Berks., United Kingdom; and N. Roberts, P. Clark, and C. Morcrette

Recorded presentation

8:15 AM

18.2

Criticality: A proposed theory for understanding and forecasting deep convective initiation

Adam L. Houston, University of Nebraska-Lincoln, Lincoln, NE

Recorded presentation

8:30 AM

18.3

Vortical structures in convective boundary layers and implications for the initiation of deep convection

Katharine M. Kanak, University of Oklahoma, Norman, OK

Recorded presentation

Presentation PDF (2.1 MB)

8:45 AM

18.4

Numerical simulations of the dryline and surrounding boundary layer on 22 May 2002 during IHOP

Michael S. Buban, CIMMS/Univ. of Oklahoma, Norman; and C. L. Ziegler and Y. P. Richardson

Recorded presentation

9:00 AM

18.5

Convection initiation and storm evolution forecasting using radar refractivity retrievals

David Bodine, Atmospheric Radar Research Center, School of Meteorology, University of Oklahoma, Norman, OK; and P. L. Heinselman, B. L. Cheong, R. Palmer, and D. S. Michaud

Recorded presentation

Presentation PDF (2.2 MB)

9:15 AM

18.6

Observation of a weak, warm and dry downdraft in the vicinity of a convective storm system, inhibiting new convective initiation

Pieter Groenemeijer, Institute for Meteorology and Climate Research, Karlsruhe Institute of Technology, Karlsruhe, , Germany; and J. Trentmann, U. Corsmeier, and C. Kottmeier

Recorded presentation

9:30 AM

18.7

The Understanding Severe Thunderstorms and Alberta Boundary Layers Experiment (UNSTABLE): overview and preliminary results

Neil M. Taylor, EC, Edmonton, AB , Canada; and D. M. L. Sills, J. Hanesiak, J. A. Milbrandt, C. D. Smith, G. Strong, S. Skone, P. J. McCarthy, and J. C. Brimelow

Recorded presentation

Presentation PDF (2.8 MB)

Coffee Break

Location: Hilton DeSoto

Session 19

High-resolution radar observations of supercells and tornadoes

Location: North & Center Ballroom (Hilton DeSoto)

Host: 24th Conference on Severe Local Storms

Chair: David O. Blanchard, NOAA/NWS

10:15 AM

19.1

High-resolution, mobile Doppler radar observations of cyclic mesocyclogenesis in a supercell

Michael M. French, Univ. of Oklahoma, Norman, OK ; and H. B. Bluestein, D. C. Dowell, L. J. Wicker, M. R. Kramar, and A. L. Pazmany

Recorded presentation

10:30 AM

19.2

High-resolution observations of cyclic tornadogenesis on 12 May 2004 near Attica, KS

Yvette P. Richardson, Penn State Univ., University Park, PA; and J. M. Wurman and P. M. Markowski

Recorded presentation

10:45 AM

19.3

Mobile radar observations of tornadic supercells with multiple rear-flank gust fronts

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

Recorded presentation

Presentation PDF (2.5 MB)

11:00 AM

19.4

Updated mobile radar climatology of supercell tornado structures and dynamics

Curtis R. Alexander, Center for Severe Weather Research, Boulder, CO; and J. Wurman

Recorded presentation

Presentation PDF (2.8 MB)

11:15 AM

19.5 has been withdrawn.

11:30 AM

19.5

Dual-Doppler analyses of nontornadic supercells observed with mobile ground-based Doppler radars

Mario Majcen, California University of Pennsylvania, California, PA; and P. Markowski, Y. Richardson, and J. Wurman

Recorded presentation

Presentation PDF (2.9 MB)

Session

Concluding Remarks and Awards

Location: North & Center Ballroom (Hilton DeSoto)

Host: 24th Conference on Severe Local Storms

Session 24th Conference on Severe Local Storms

Monday, 27 October 2008

9:00 AM-10:05 AM: Monday, 27 October 2008

10:05 AM-10:30 AM: Monday, 27 October 2008

10:30 AM-12:00 PM: Monday, 27 October 2008

12:00 PM-1:30 PM: Monday, 27 October 2008

1:30 PM-3:00 PM: Monday, 27 October 2008

3:00 PM-4:30 PM: Monday, 27 October 2008

4:30 PM-5:30 PM: Monday, 27 October 2008

5:30 PM-7:00 PM: Monday, 27 October 2008

7:00 PM-7:45 PM: Monday, 27 October 2008

7:45 PM-9:00 PM: Monday, 27 October 2008

Tuesday, 28 October 2008

8:30 AM-10:15 AM: Tuesday, 28 October 2008

10:15 AM-10:45 AM: Tuesday, 28 October 2008

10:45 AM-12:00 PM: Tuesday, 28 October 2008

12:00 PM-1:30 PM: Tuesday, 28 October 2008

1:30 PM-3:00 PM: Tuesday, 28 October 2008

3:00 PM-4:30 PM: Tuesday, 28 October 2008

4:30 PM-6:00 PM: Tuesday, 28 October 2008

8:00 PM-10:00 PM: Tuesday, 28 October 2008

Wednesday, 29 October 2008

8:00 AM-8:45 AM: Wednesday, 29 October 2008

8:45 AM-10:00 AM: Wednesday, 29 October 2008

10:00 AM-10:30 AM: Wednesday, 29 October 2008

10:30 AM-12:00 PM: Wednesday, 29 October 2008

12:00 PM-1:30 PM: Wednesday, 29 October 2008

1:30 PM-3:00 PM: Wednesday, 29 October 2008

3:00 PM-4:30 PM: Wednesday, 29 October 2008

5:00 PM-8:00 PM: Wednesday, 29 October 2008

Thursday, 30 October 2008

8:30 AM-10:00 AM: Thursday, 30 October 2008

10:00 AM-10:30 AM: Thursday, 30 October 2008

10:30 AM-12:00 PM: Thursday, 30 October 2008

12:00 PM-1:30 PM: Thursday, 30 October 2008

1:30 PM-3:00 PM: Thursday, 30 October 2008

3:00 PM-4:30 PM: Thursday, 30 October 2008

4:30 PM-6:00 PM: Thursday, 30 October 2008

Friday, 31 October 2008

8:00 AM-9:45 AM: Friday, 31 October 2008

9:45 AM-10:15 AM: Friday, 31 October 2008

10:15 AM-11:45 AM: Friday, 31 October 2008

11:45 AM-12:00 PM: Friday, 31 October 2008

Monday, 27 October 2008

9:00 AM-10:05 AM: Monday, 27 October 2008

10:05 AM-10:30 AM: Monday, 27 October 2008

10:30 AM-12:00 PM: Monday, 27 October 2008

12:00 PM-1:30 PM: Monday, 27 October 2008

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4:30 PM-5:30 PM: Monday, 27 October 2008

5:30 PM-7:00 PM: Monday, 27 October 2008

7:00 PM-7:45 PM: Monday, 27 October 2008

7:45 PM-9:00 PM: Monday, 27 October 2008

Tuesday, 28 October 2008

8:30 AM-10:15 AM: Tuesday, 28 October 2008

10:15 AM-10:45 AM: Tuesday, 28 October 2008

10:45 AM-12:00 PM: Tuesday, 28 October 2008

12:00 PM-1:30 PM: Tuesday, 28 October 2008

1:30 PM-3:00 PM: Tuesday, 28 October 2008

3:00 PM-4:30 PM: Tuesday, 28 October 2008

4:30 PM-6:00 PM: Tuesday, 28 October 2008

8:00 PM-10:00 PM: Tuesday, 28 October 2008

Wednesday, 29 October 2008

8:00 AM-8:45 AM: Wednesday, 29 October 2008

8:45 AM-10:00 AM: Wednesday, 29 October 2008

10:00 AM-10:30 AM: Wednesday, 29 October 2008

10:30 AM-12:00 PM: Wednesday, 29 October 2008

12:00 PM-1:30 PM: Wednesday, 29 October 2008

1:30 PM-3:00 PM: Wednesday, 29 October 2008

3:00 PM-4:30 PM: Wednesday, 29 October 2008

5:00 PM-8:00 PM: Wednesday, 29 October 2008

Thursday, 30 October 2008

8:30 AM-10:00 AM: Thursday, 30 October 2008

10:00 AM-10:30 AM: Thursday, 30 October 2008

10:30 AM-12:00 PM: Thursday, 30 October 2008

12:00 PM-1:30 PM: Thursday, 30 October 2008

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3:00 PM-4:30 PM: Thursday, 30 October 2008

4:30 PM-6:00 PM: Thursday, 30 October 2008