20th Conference on Severe Local Storms

« Collapse View
- Indicates paper has been withdrawn from meeting
- Indicates paper is an Award Winner

Monday, 11 September 2000

Monday | Tuesday | Wednesday | Thursday | Friday | Saturday | top

5:00 PM-7:00 PM: Monday, 11 September 2000


Conference Registration

Tuesday, 12 September 2000

Monday | Tuesday | Wednesday | Thursday | Friday | Saturday | top

7:15 AM-5:30 PM: Tuesday, 12 September 2000


Conference Registration

8:15 AM-8:30 AM: Tuesday, 12 September 2000


Introductory Remarks

8:30 AM-9:00 AM: Tuesday, 12 September 2000


Session
Keynote Address
Host: 20th Conference on Severe Local Storms
8:30 AM
Perspectives on the future of severe local storms research and operations
James F. Kimpel, Director, NOAA/NSSL, Norman, OK

9:00 AM-10:00 AM: Tuesday, 12 September 2000


Session 1
3 May 1999 Oklahoma/Kansas Tornado Outbreak
Host: 20th Conference on Severe Local Storms
Organizers: Kevin J. Pence, NOAA/NWS; Donald W. Burgess, NOAA/NSSL
9:00 AM
1.1
Warning Decision Making Process During the 3 May 1999 Tornado Outbreak
Elizabeth M. Quoetone, NOAA/NWS, Norman, OK; and D. L. Andra Jr. and W. F. Bunting

9:15 AM
1.2
Damage Survey of the Moore, Oklahoma Tornado
Timothy P. Marshall, Haag Engineering Company, Dallas, TX

9:30 AM
1.3
Analysis of tornado damage on May 3rd, 1999 using remote sensing and GIS methods on high-resolution satellite imagery
Michael A. Magsig, CIMMS/Univ. of Oklahoma, Norman, OK; and M. Dickens-Micozzi and M. Yuan

9:45 AM
1.4
Evolution of the surface meteorological fields on May 3, 1999
Michael P. Foster, NOAA/NWS, Fort Worth, TX; and A. R. Moller, J. K. Jordan, and K. C. Crawford

10:00 AM-10:00 AM: Tuesday, 12 September 2000


Coffee Break

10:30 AM-11:59 AM: Tuesday, 12 September 2000


Session 2
3 May 1999 Oklahoma/Kansas Tornado Outbreak: Forecasting And Nowcasting
Host: 20th Conference on Severe Local Storms
Organizers: Steven J. Weiss, NOAA/NSSL/SPC; Alan R. Moeller, NOAA/NWSFO
10:30 AM
2.1
Mesoscale Model Ensemble Forecasts of the 3 May 1999 Tornado Outbreak
Steven J. Weiss, NOAA/NWS/NCEP/SPC, Norman, OK; and D. J. Stensrud

10:45 AM
2.2
Beyond the nowcast range: 24-h forecast guidance concerning convective initiation and mode for the Great Plains tornado outbreak of 3 May 1999
Paul J. Roebber, Univ. of Wisconsin, Milwaukee, WI; and D. Schultz and R. Thompson

11:00 AM
2.3
A past and future look at the Rapid Update Cycle for the 3 May 1999 severe weather outbreak
Tracy Lorraine Smith, NOAA/OAR/FSL and CIRA/Colorado State Univ., Boulder, CO; and S. G. Benjamin, B. E. Schwartz, G. Grell, P. Bothwell, and J. Hart

11:15 AM
2.4
Formation, movement and decay of the dryline during the May 1999 Oklahoma tornado episode
Mukut B. Mathur, NOAA/NWS/NCEP, Camp Springs, MD

11:30 AM
2.5
Nowcasting the 3 May 1999 Oklahoma tornado outbreak using the AERI ground-based interferometer
John R. Mecikalski, CIMSS/Univ. of Wisconsin and Space Science and Engineering Center, Madison, WI; and W. F. Feltz

2.6
Explicit Prediction of the Moore, OK Tornadic Supercell Using Single-Doppler Retrieved Fields Obtained from WSR-88D Level-II Data

11:46 AM
2.6A
A Comparison of Rapid Update Cycle (RUC-2) Model (Also being presented in a poster session, Poster P12.4)
Richard L. Thompson, NOAA/NWS/SPC, Norman, OK; and R. Edwards

12:00 PM-12:00 PM: Tuesday, 12 September 2000


Lunch Break

1:00 PM-1:20 PM: Tuesday, 12 September 2000


Daily Weather Briefing

1:30 PM-3:00 PM: Tuesday, 12 September 2000


Session 3
3 May 1999 Oklahoma/Kansas Tornado Outbreak: Observations
Host: 20th Conference on Severe Local Storms
Organizers: Michael A. Magsig, NOAA/NWS/OSF; Richard L. Thompson, NOAA/NSSL/SPC
1:30 PM
3.1
Tornadic Supercells on May 3, 1999 Viewed from Space during an Overpass of the NASA TRMM Observatory
Steven J. Goodman, NASA/MSFC and the Global Hydrology and Climate Center/Univ. of Alabama, Huntsville, AL; and D. E. Buechler, K. Driscoll, D. W. Burgess, and M. A. Magsig

1:45 PM
3.2
Mobile Doppler radar observations of a tornado near Verden, Oklahoma on 3 May 1999
Howard B. Bluestein, Univ. of Oklahoma, Norman, OK; and A. L. Pazmany

2:00 PM
3.3
Understanding WSR-88D signatures for the 3 May 1999 Oklahoma City tornado
Donald W. Burgess, NOAA/NWS/OSF, Norman, OK; and M. A. Magsig

2:15 PM
3.4
Integration and application of multiple radars to May 3rd 1999 severe storms: An assesment of the "VIPIR" performance
Gregory S. Wilson, Baron Services Inc., Huntsville, AL; and L. R. Lemon

2:30 PM
3.5
An Examination of tornadic Signatures Associated with the May 3, 1999 Outbreak Using a New WSR-88D Scaning Strategy
J. William Conway, NOAA/NSSL and CIMMS/Univ. of Oklahoma, Norman, OK; and W. D. Zittel

2:45 PM
3.6
Enhanced detection of tornadoes on 3 May 1999 using prototype fine-resolution WSR-88D measurements
Rodger A. Brown, NOAA/NSSL, Norman, OK; and V. T. Wood

3:00 PM-3:00 PM: Tuesday, 12 September 2000


Coffee Break

3:30 PM-4:30 PM: Tuesday, 12 September 2000


Session 4
Mesoscale Convective Systems I
Host: 20th Conference on Severe Local Storms
Organizers: David O. Blanchard, NOAA/NWS; Stanley G. Benjamin, NOAA/ERL/FSL
3:30 PM
4.1
Observations of the Formation and Early Evolution of Bow Echoes
Brian A. Klimowski, NOAA/NWSFO, Rapid City, SD; and R. Przybylinski, G. Schmocker, and M. R. Hjelmfelt

3:45 PM
4.2
Simulation of a progressive derecho using composite initial conditions
Michael C. Coniglio, SUNY, Albany, NY; and D. J. Stensrud

4:00 PM
4.3
A Detailed Look at Extreme Wind Damage in Derecho Events
Daniel J. Miller, NOAA/NWS, Norman, OK; and R. H. Johns

4:15 PM
4.4
Characteristics of circulations associated with the 29 June 1998 derecho in eastern Iowa
Ray A. Wolf, NOAA/NWS, Davenport, IA

4:30 PM-4:30 PM: Tuesday, 12 September 2000


Oral Sessions End for the Day

4:30 PM-6:30 PM: Tuesday, 12 September 2000


Poster Session 1
3 May 1999 Oklahoma/Kansas Tornado Outbreak: Warnings, Forecasts, And Observations
Host: 20th Conference on Severe Local Storms
P1.1
Initiation of Storm A (3 May 99) along a Possible Horizontal Convective Roll
Roger Edwards, NOAA/NSSL/SPC, Norman, OK; and R. L. Thompson and J. G. LaDue

P1.2
Uncovering the Physical Mechanisms Responsible for the "Mystery" Boundary on May 3

P1.3
Warning Response and Risk Behavior in the 3 May 1999 Oklahoma City Long Track Violent Tornado
Matthew D. Biddle, Univ. of Oklahoma, Norman, OK

P1.4
Verification of the tornado events in the Norman Oklahoma NWSFO county warning area for the May 3, 1999 severe weather outbreak
Gregory J. Stumpf, NOAA/NSSL and CIMMS/Univ. of Oklahoma, Norman, OK; and D. Speheger and D. W. Burgess

P1.5
Use of vehicles to flee the 3 May 1999 Oklahoma City Tornado: Reasons and relative injury rates
Barbara Hammer, Kent State Univ., Kent, OH; and T. Schmidlin

P1.6
Lightning relative to other tornadic storm parameters on 3 May 1999
Donald R. MacGorman, NOAA/NSSL, Norman, OK; and E. Spencer, K. Cummins, and J. Cramer


Poster Session 2
Convective Initiation
Host: 20th Conference on Severe Local Storms
P2.1
Estimating boundary-relative flow in forecasting convection
James G. LaDue, WSR-88D, NOAA/NWS/OSF, Norman, OK; and A. Wood

P2.2
Observations of the Interaction of a Tornadic Mini Supercell with a Preexisting Meso-Gama Surface Boundary

P2.3
Simulating deep convection initiation by misocyclones
Bruce D. Lee, Univ. of Northern Colorado, Greeley, CO; and C. A. Finley and R. B. Wilhelmson

P2.4
Initiation and evolution of severe convection in the 19 April 1996 Illinois Tornado Outbreak
Brian F. Jewett, Univ. of Illinois, Urbana, IL; and B. D. Lee and R. B. Wilhelmson

P2.5
Numerical simulation of the interaction between the dryline and horizontal convective rolls
Steven E. Peckham, Univ. of Illinois, Urbana, IL; and R. B. Wilhelmson, L. J. Wicker, and C. L. Ziegler

P2.6
Severe thunderstorm initiation along the dryline: A mesoscale case study
Carl E. Hane, NOAA/NSSL, Norman, OK; and R. M. Rabin, T. M. Crawford, H. B. Bluestein, and M. E. Baldwin


Poster Session 3
Climatological Studies Of Severe Local Storms
Host: 20th Conference on Severe Local Storms
P3.1
Severe Local Storms in Southern Brazilian Non-Line Convective Systems
Sanjar Abdoulaev, Univ. Estadual do Norte Fluminense, Macae, RJ, Brazil; and A. Starostin and O. Lenskaia

P3.2
Severe Storm Climatology for Southern New England From 1993 to 1999
James E. Lee, NOAA/NWSFO, Taunton, MA; and T. J. Trundel

P3.3
High Wind Climatology for Southern New England From 1993 to 1999
James E. Lee, NOAA/NWSFO, Taunton, MA; and D. Myrick

P3.4
Using GIS to Generate Spatial Statistics for Tornado Occurrences
Steve Weinbeck, Texas Tech Univ., Lubbock, TX; and R. Peterson, A. Doggett IV, and K. Mulligan

P3.5
The tornado climatology of the St. Louis Weather Forecast Office county warning area
Mark F. Britt, NOAA/NWSFO, St. Charles, MO; and F. H. Glass

P3.6
Map of All Known North American Killer Tornadoes, 1700-1999

P3.7
A radar signature climatology using WSR-88D Level II data
E. DeWayne Mitchell, NOAA/OAR/NSSL and CIMMS/Univ. of Oklahoma, Norman, OK; and K. L. Elmore, K. Angle, C. Hannon, and N. J. Eckstein

P3.8
A Climatology of the South Plains Retreating Dryline
Mark R. Conder, Texas Tech Univ., Lubbock, TX; and R. E. Peterson

P3.9
TORNADOES IN FINLAND DURING THE YEARS 1997–1999
Jenni. J. Teittinen, Finnish Meteorological Institute, Helsinki, Finland


Poster Session 4
Tornadoes And Tropical Cyclones
Host: 20th Conference on Severe Local Storms
P4.1
Examination of Tornadic Supercells in Tropical Cyclone Earl (1998) using Conventional and WSR-88D Data Suites
Roger Edwards, NOAA/NWS/SPC, Norman, OK; and G. V. Rao and J. Scheck

P4.2
Tornado Outbreak in the middle and upper Florida Keys associated with Tropical Storm Mitch
Guy E. Rader, NOAA/NWS, Miami, FL; and J. Gross

P4.3
A Comparison of Outer and Inner Rainband Mesocyclone Characteristics in Hurricane Georges
John E. Wright, NOAA/NWS, Miami, FL; and J. Aguirre-Echevarria


Poster Session 5
Lightning Studies
Host: 20th Conference on Severe Local Storms
P5.1
Lightning in tornadic thunderstorms over the Northeastern United States
Thomas J. Galarneau Jr., SUNY, Albany, NY; and S. F. Honikman, A. C. Cacciola, L. F. Bosart, K. D. LaPenta, J. S. Quinlan, and G. Wiley

P5.2
An Exploratory Study of Lightning Activity on Southeast and South of Brazil
Sanjar Abdoulaev, Univ. Estadual do Norte Fluminense, Macaé, RJ, Brazil; and V. da Silva Marques, F. M. A. Pinheiro, E. F. A. Martinez, and O. Lenskaia

P5.3
THE ALMENA KANSAS TORNADIC SUPERCELL OF 3 JUNE 1999: A LONG-LIVED SUPERCELL WITH VERY LITTLE CLOUD-TO-GROUND LIGHTNING
Eugene W. McCaul Jr., USRA, Huntsville, AL; and D. E. Buechler

P5.4
The lightning program at National Weather Service Pueblo
Stephen Hodanish, NOAA/NWS, Pueblo, CO

5:30 PM-8:00 PM: Tuesday, 12 September 2000


Welcome Reception (Cash Bar)/Viewing of Posters from both the Ninth Conference on Aviation, Range, & Aerospace Meteorology and 20th Conference on Severe Local Storms)

Wednesday, 13 September 2000

Monday | Tuesday | Wednesday | Thursday | Friday | Saturday | top

8:00 AM-10:00 AM: Wednesday, 13 September 2000


Session 5A
Climatological studies (Parallel with Session 5b)
Host: 20th Conference on Severe Local Storms
Organizers: Harold E. Brooks, NOAA/NSSL; Thomas P. Grazulis, The Tornado Project
8:00 AM
5A.1
Tornadoes in the United States as Related to the Tropical Pacific Sea Surface Temperature
Joseph T. Schaefer, NOAA/NWS/SPC, Norman, OK; and C. Marzban

8:15 AM
5A.2
Some Mesoscale features in Canadian Lightning Data
Patrick W. S. King, MSC, Toronto, ON, Canada; and W. R. Burrows

8:30 AM
5A.3
An Investigation of Population Bias in Tornado Records
John T. Snow, Univ. of Oklahoma, Norman, OK; and M. Richman, K. Nixon, and C. Levision

8:45 AM
5A.4
The Climatology of Severe Thunderstorms: What We Can Know
Harold E. Brooks, NOAA/NSSL, Norman, OK

9:00 AM
5A.5
Using Doppler radar vortex detection algorithms to develop synthetic tornado climatologies
Gregory J. Stumpf, NOAA/ERL/NSSL and CIMMS/Univ. of Oklahoma, Norman, OK; and C. Marzban

9:15 AM
5A.6
On the climatological distribution of tornadoes within quasi-linear convective systems
Sarah A. Tessendorf, NCAR, Boulder, CO; and R. J. Trapp

9:30 AM
5A.7
Tornadoes of the Former Soviet Union
Richard E. Peterson, Texas Tech Univ., Lubbock, TX

9:45 AM
5A.8
A composite synoptic climatology of Florida peninsular tornado outbreaks
Christopher Mello, NOAA/NWS, Hanford, CA; and C. H. Paxton and C. M. Hartnett


Session 5B
Storm electrification, lightning, and STEPS (Parallel with Session 5A)
Host: 20th Conference on Severe Local Storms
Organizers: Walter A. Lyons, FMA Research Inc.; Bartlett C. Hagemeyer, NOAA/NWS
8:00 AM
5B.1
An overview of the Severe Thunderstorm Electrification and Precipitation Study (STEPS)
Morris L. Weisman, NCAR, Boulder, CO; and L. J. Miller

8:15 AM
5B.2
Lightning and other electrical observations in STEPS
Donald R. MacGorman, NOAA/NSSL, Norman, OK; and W. D. Rust, P. Krehbiel, A. Detwiler, J. Helsdon, S. A. Rutledge, L. Carey, and W. Beasley

8:30 AM
5B.3
Results from the SPRITES'99 and STEPS 2000 Field Programs
Walter A. Lyons, FMA Research, Inc., Fort Collins, CO; and T. E. Nelson and J. Fossum

8:45 AM
5B.4
Influence of the local environment on 2 June 1995 supercell cloud-to-ground lightning polarity
Matthew S. Gilmore, CIMMS/Univ. of Oklahoma and NOAA/NSSL, Boulder, CO and Texas A&M Univ., College Station, TX; and L. J. Wicker

9:00 AM
5B.5
Lightning Distributions over the Florida Peninsula
Todd P. Lericos, Florida State Univ., Tallahassee, FL; and H. E. Fuelberg and A. I. Watson

9:15 AM
5B.6
Cloud-to-ground lightning in linear MCS archetypes without trailing stratiform precipitation
Matthew D. Parker, Colorado State Univ., Fort Collins, CO; and R. H. Johnson and S. A. Rutledge

9:30 AM
5B.7
Numerically simulated lightning production in severe storms
Edward R. Mansell, Univ. of Oklahoma and NOAA/NSSL, Norman, OK; and D. R. MacGorman, J. M. Straka, and C. L. Ziegler

9:45 AM
5B.8
Predicting Convective Rainfall Amounts from Lightning Flash Density
Kerry R. Anderson, Canadian Forest Service, Edmonton, AB, Canada

10:00 AM-10:00 AM: Wednesday, 13 September 2000


Coffee Break

10:30 AM-12:00 PM: Wednesday, 13 September 2000


Session 6
Mesoscale Convective Systems II
Host: 20th Conference on Severe Local Storms
Organizers: Stanley B. Trier, NCAR; Ray A. Wolf, NOAA/NWS
10:30 AM
6.1
The Severe Bow Echo Event of 14 June 1998 over the Mid-Mississippi Valley Region: A Case of Vortex Development near the Intersection of a Preexisting Boundary and a Convective Line
Gary K. Schmocker, NOAA/NWSO, St. Charles, MO; and R. W. Przybylinski and E. N. Rasmussen

10:45 AM
6.2
A Study of Storm and Vortex Morphology during the 'Intensifying Stage' of Severe Wind Mesoscale Convective Systems
Ron W. Przybylinski, NOAA/NWSO, St. Charles, MO; and G. K. Schmocker and Y. J. Lin

11:00 AM
6.3
WSR-88D reflectivity and velocity trends of a damaging squall line event on 20 April 1996 over south-central Indiana and central Kentucky
Van L. DeWald, NOAA/NWSFO, Louisville, KY; and T. W. Funk

11:15 AM
6.4
A bow-echo event on a squall line in the Netherlands
Rob Groenland, Meteo Consult, Wageningen, Netherlands

11:30 AM
6.5
Investigation of an Unusual Storm Structure Associated with Weak to Occasionally Strong Tornadoes over the Eastern United States
Bryan P. McAvoy, NOAA/NWS, Greer, SC; and W. A. Jones and P. D. Moore

11:45 AM
6.6
Profiler observations of squall lines and linear convective systems
Kevin R. Knupp, Univ. of Alabama, Huntsville, AL; and J. Walters

12:00 PM-12:00 PM: Wednesday, 13 September 2000


Lunch Break

12:00 PM-1:30 PM: Wednesday, 13 September 2000


Poster Session 6
Observations And Studies Of Tornadoes And Tornadic Storms
Host: 20th Conference on Severe Local Storms
P6.1
Case study of an unforecasted mini-supercell with a high-top in Colorado
Stephen J. Hodanish, NOAA/NWS, Pueblo, CO; and G. J. Stumpf

P6.2
VORTEX 95 High precision barogram obtained near the Allison, TX tornado
Emmett Redd, Southwest Missouri State Univ., Springfield, MO

P6.3
High resolution single-Doppler observations of two tornadoes
Michael I. Biggerstaff, Texas A&M Univ., College Station, TX

P6.4
Observations of tornadogenesis with a 3-mm-wavelength mobile Doppler radar
Howard B. Bluestein, Univ. of Oklahoma, Norman, OK; and A. L. Pazmany

P6.5
Close Range WSR-88D Observations Of Several Tornadic Storms
Fred H. Glass, NOAA/NWS, St. Charles, MO; and M. F. Britt

P6.6
South Florida 1998 Groundhog Day tornado outbreak
Kim O. Brabander, NOAA/NWS, Miami, FL

P6.7
A case study of a well-documented tornadic thunderstorm in the San Joaquin Valley, California
Theodore B. Schlaepfer, San Francisco State Univ., San Francisco, CA; and J. P. Monteverdi

P6.8
First WSR-88D documentation of an anticyclonic supercell with anticyclonic tornadoes: the Sunnyvale/Los Altos tornadoes of 4 May 1998
John P. Monteverdi, San Francisco State Univ., San Francisco, CA; and W. Blier, G. J. Stumpf, W. Pi, and K. Anderson

P6.9
The tornadic supercell of 8 April 1998 across Alabama and Georgia
Kevin J. Pence, NOAA/NWS, Birmingham, AL; and B. E. Peters

P6.10
A Tornadic Thunderstorm in the Complex Terrain of Southcentral New Mexico
Jeffrey E. Passner, U.S. Army Research Lab., White Sands Missle Range, NM; and J. A. Rogash

P6.11
The Saint James Tornado: A Case Study of Boundary Interaction
James L. Taggart, NOAA/NWSFO, Springfield, MO

P6.12
An overview of a cool season tornadic supercell over central Mississippi
Alan E. Gerard, NOAA/NWSFO, Jackson, MS; and G. R. Garrett and C. Morgan

P6.13
Supercell differentiation and organization for the 19 April 1996 Illinois tornado outbreak
Bruce D. Lee, Univ. of Northern Colorado, Greeley, CO; and B. F. Jewett and R. B. Wilhelmson

P6.14
Cincinnati, Ohio Tornadic Outbreak 9 April 1999—A Case Study
Gregory A. Tipton, NOAA/NWSFO, Wilmington, OH; and J. T. DiStefano and G. J. Stumpf

P6.15
Paper moved to 17.1A

P6.16
Numerical simulation of secondary vortex development in a tornadic vortex
Catherine A. Finley, Univ. of Northern Colorado, Greeley, CO; and B. D. Lee and W. R. Cotton

P6.17
Estimates of rear-flank downdraft buoyancy as a predictor of tornadogenesis
William A. Gallus Jr., Iowa State Univ., Ames, IA; and C. J. Anderson and A. E. Frederick

P6.18
On the Nature of Highly Deviant Supercell Motion
Matthew J. Bunkers, NOAA/NWSFO, Rapid City, SD; and J. W. Zeitler

P6.19
An investigation of topographic influence on tornades in Georgia
Scott A. Lawrimore, Georgia Institute of Technology and The Weather Channel, Atlanta, GA; and J. C. St. John, G. Beeley, and T. Murphy

1:00 PM-1:20 PM: Wednesday, 13 September 2000


Daily Weather Briefing

1:30 PM-3:00 PM: Wednesday, 13 September 2000


Session 7
Tornadoes And Tornadic Storms
Host: 20th Conference on Severe Local Storms
Organizers: James G. LaDue, NOAA/NWS/OSF; David C. Dowell, NOAA/NSSL
1:30 PM
7.1
Landspouts at lake breeze fronts in southern Ontario
David M. L. Sills, EC, King City, ON, Canada; and P. W. S. King

1:45 PM
7.2
Doppler wind profiler observations in and near a tornadic supercell
Gregor S. Lehmiller, Univ. of Oklahoma, Norman, OK; and H. B. Bluestein, P. J. Neiman, F. M. Ralph, and W. F. Feltz

2:00 PM
7.3
Surface thermodynamic characteristics of RFDs as measured by a mobile mesonet
Paul Markowski, CIMMS/Univ. of Oklahoma, Norman, OK; and E. N. Rasmussen and J. Straka

2:15 PM
7.4
A Case Study of Supercell Propagation
Huaqing Cai, Univ. of California, Los Angeles, CA; and R. M. Wakimoto

2:30 PM
7.5
Conceptual models of cyclic supercell tornadogenesis
David C. Dowell, NOAA/NSSL and CIMMS/Univ. of Oklahoma, Norman, OK; and H. B. Bluestein

2:45 PM
7.6
A numerical study of cyclic tornadogenesis: The 8 June 1995 VORTEX Case
Louis J. Wicker, NOAA/NSSL, Norman, OK; and D. C. Dowell

3:00 PM-3:00 PM: Wednesday, 13 September 2000


Coffee Break

3:30 PM-4:30 PM: Wednesday, 13 September 2000


Session 8
Tornadoes And Tornadogenesis (Parallel with Joint Session J1)
Host: 20th Conference on Severe Local Storms
Organizers: John T. Snow, Univ. of Oklahoma; David C. Lewellen, West Virginia Univ.
3:30 PM
8.1
A simple thermodynamical theory for tornadoes
Nilton Renno, Univ. of Arizona, Tucson, AZ

3:45 PM
8.2
Nonaxisymmetric, unsteady tornadic corner flows
David C. Lewellen, West Virginia Univ., Morgantown, WV; and W. S. Lewellen and J. Xia

4:00 PM
8.3
Can the hook echo instigate tornadogenesis barotropically?
Robert Davies-Jones, NOAA/NSSL, Norman, OK

4:15 PM
8.4
Preliminary investigation of tornadogenesis within quasi-linear convective systems
R. Jeffrey Trapp, NOAA/NSSL, Boulder, CO; and M. L. Weisman

4:30 PM-4:30 PM: Wednesday, 13 September 2000


Oral Sessions End for the Day

4:30 PM-6:00 PM: Wednesday, 13 September 2000


Poster Session 6
Formal Poster Viewing Continued
Host: 20th Conference on Severe Local Storms

5:00 PM-5:00 PM: Wednesday, 13 September 2000


Meet at Front Entrance of the Radisson Hotel to board bus for Universal Studios (for banquet)

7:30 PM-10:30 PM: Wednesday, 13 September 2000


Conference Banquet at Universal Studios

Thursday, 14 September 2000

Monday | Tuesday | Wednesday | Thursday | Friday | Saturday | top

8:00 AM-9:45 AM: Thursday, 14 September 2000


Session 9
Current And Proposed Future Directions of Severe-Storm Research, Operations, And Disaster Mitigation
Host: 20th Conference on Severe Local Storms
Organizers: Lans P. Rothfusz, NOAA; Michael D. Eilts, NOAA/NSSL
8:00 AM
9.1
A new tool for atmospheric research
Michael I. Biggerstaff, Texas A&M Univ., College Station, TX; and J. Guynes

8:15 AM
9.2
Paper transferred to Poster Session 12, poster # P12.13

8:16 AM
9.3
Verification of probabilistic severe storm forecasts at the SPC
Michael P. Kay, NOAA/NWS/SPC, Norman, OK; and H. E. Brooks

8:30 AM
9.4
Graphically Depicting the Hazardous Weather Outlook for East Central Florida
John C. Pendergrast, NOAA/NWS, Melbourne, FL; and D. W. Sharp and D. L. Jacobs

8:45 AM
9.5
Maintaining an Effective Rural County Skywarn Group in the Southeastern United States
Barry C. Roberts, Lawrence County Tennessee Skywarn Association, St. Joseph, TN; and J. E. Baxter

9:00 AM
9.6
The Tornado Damage Risk Assessment Predicting the Impact of A Big Outbreak in Dallas-Fort Worth, Texas
Scott Rae, North Central Texas Council of Governments, Arlington, TX; and J. Stefkovich

9:15 AM
9.7
An analysis of the public response to the east central florida tornado outbreak of 22–23, february 1998
Earl J. Baker, Florida State Univ., Tallahassee, FL; and T. W. Troutman

9:30 AM
9.8
Tornado shelter-seeking behavior and shelter options among mobile home residents
Thomas W. Schmidlin, Kent State Univ., Kent, OH; and B. Hammer, Y. Ono, and P. King

10:00 AM-10:00 AM: Thursday, 14 September 2000


Coffee Break

10:30 AM-12:00 PM: Thursday, 14 September 2000


Session 10
Warnings, Dissemination, And Verification
Host: 20th Conference on Severe Local Storms
Organizers: Elizabeth M. Quoetone, NOAA/NWS/OSF; Stephen Parker, NOAA/NWS
10:30 AM
10.1
Impact of severe weather warnings on the hearing impaired
Vincent T. Wood, NOAA/NSSL, Norman, OK; and R. A. Weisman

10:45 AM
10.2
Categorical thunderstorm and tornado warnings in the National Weather Service
Stephan B. Smith, NOAA/NWS/TDL, Silver Spring, MD

11:00 AM
10.3
National Weather Service warnings: comparing expectations with reality
Lans P. Rothfusz, NOAA, Norman, OK

11:15 AM
10.4
Tornado Warning Situations for East Central Florida
David W. Sharp, NOAA/NWS, Melbourne, FL; and P. F. Blottman and T. W. Troutman

11:30 AM
10.5
Southwest Georgia tornado outbreak of 13–14 February 2000: An overview
Kenneth J. Gould, NOAA/NWS, Tallahassee, FL; and T. J. Turnage, J. D. Fournier, A. I. Watson, R. C. Goree, R. L. Block, and M. C. Trexler

11:45 AM
10.6
The Warning Polygon Verification Project: An alternative verification scheme for severe storm warnings
Richard D. Smith, NOAA/NWS, Fort Worth, TX

12:00 PM-12:00 PM: Thursday, 14 September 2000


Lunch Break

1:00 PM-1:20 PM: Thursday, 14 September 2000


Daily Weather Briefing

1:30 PM-1:30 PM: Thursday, 14 September 2000


Panel Discussion 11
Panel Discussion On Lead Time, False Alarms, And Probabilistic Severe-Weather Warnings
Host: 20th Conference on Severe Local Storms
Organizer: R. Jeffrey Trapp, NOAA/NSSL
Panelists: Thomas R. Stewart, SUNY; Terry Schenk, Chief Fire Administrator; Charles A. Doswell III, NOAA/NSSL; Morris L. Weisman, NCAR; Dennis Decker, NOAA/NWS

3:00 PM-3:00 PM: Thursday, 14 September 2000


Coffee Break

3:30 PM-5:00 PM: Thursday, 14 September 2000


Session 12
Mesoscale Convective Vortices/Mesoscale Convective Systems
Host: 20th Conference on Severe Local Storms
Organizers: Robert H. Johns, NOAA/NSSL/SPC; Brian A. Klimowski, NOAA/NWS
3:30 PM
12.1
A long-lived convectively generated mesoscale vortex associated with heavy rainfall
Stanley B. Trier, NCAR, Boulder, CO; and C. A. Davis and J. D. Tuttle

3:45 PM
12.2
The Local wind of an MCS and a vorticity budget for the mesoscale convective vortex within it
Jason C. Knievel, Colorado State Univ., Fort Collins, CO

4:00 PM
12.3
A potential vorticity streamer and its role in the development of a week-long series of mesoscale convective systems. Part I: Severe weather and precipitation
Edward I. Tollerud, NOAA/OAR/FSL, Boulder, CO; and F. Caracena and A. Marroquin

4:15 PM
12.4
MESOSCALE CONVECTIVE SYSTEMS IN MEXICO DURING 96–98
Arturo Valdes-Manzanilla, Instituto Mexicano de Tecnología del Agua, Jiutepec, Morelos, Mexico; and J. J. Pastrana

4:30 PM
12.5
Toward improved prediction of MCS dissipation
Joseph J. Gale, Iowa State Univ., Ames, IA; and W. A. Gallus Jr. and K. A. Jungbluth

4:45 PM
12.6
An Examination of a Local Mesoscale Model's Performance of a Midwestern Squall Line
James M. O'Sullivan, Saint Louis Univ., St. Louis, MO; and Y. J. Lin and R. W. Przybylinski

5:00 PM-5:00 PM: Thursday, 14 September 2000


Oral Sessions End for the Day

5:00 PM-6:30 PM: Thursday, 14 September 2000


Poster Session 7
Severe Storm Detection
Host: 20th Conference on Severe Local Storms
P7.1
Operational Use of Cell Trends as a Predictor of Non-Mesocyclone Tornadogenesis
Jay L. Michaels, Cocoa High School, Cocoa, FL

P7.2
Observations of a tornadic and non-tornadic circulation near the KDVN WSR-88D associated with the 19 June 1998 squall line
Ray A. Wolf, NOAA/NWS, Davenport, Iowa

P7.3
Radar Observations of Northeastern United States Tornadoes
Kenneth D. LaPenta, NOAA/NWSFO, Albany, NY; and G. J. Maglaras, J. S. Quinlan, H. W. Johnson, L. F. Bosart, and T. J. Galarneau Jr.

P7.4
A WSR-88D TDA performance evaluation using Level II data from the western/intermountaion U.S.
E. DeWayne Mitchell, NOAA/OAR/NSSL, Norman, OK; and R. R. Lee

P7.5
WSR-88D mesocyclone characteristics of selected thunderstorms during the Southwest Georgia Tornado Outbreak of 13–14 February 2000
T. J. Turnage, NOAA/NWS, Tallahassee, FL; and R. R. Lee and E. D. Mitchell

P7.6
An analysis of NSSL WDSS circulation parameters during 1999–2000 tornado events in the NWS Jackson, Mississippi, county warning area
Eric E. Carpenter, NOAA/NWS, Jackson, MS; and A. E. Gerard and E. R. Agre

P7.7
Improved detection of WSR-88D mesocyclone signatures during the Oklahoma tornado outbreak of 3 May 1999
Vincent T. Wood, NOAA/NSSL, Norman, OK; and R. A. Brown

P7.8
An evaluation methodology applied to the Damaging Downburst Prediction and Detection Algorithm
Travis M. Smith, NOAA/NSSL and CIMMS/Univ. of Oklahoma, Norman, OK; and S. A. Myers and K. L. Elmore

P7.9
The WSR-88D hail detection algorithm: A performance update
Arthur Witt, NOAA/NSSL, Norman, OK

P7.10
Integrated tornado detection and warning


Poster Session 8
Mesoscale Convective Systems And High Wind Events
Host: 20th Conference on Severe Local Storms
P8.1
Observational study of a Midwestern severe wind Mesoscale Convective System (MCS) on 29 June 1998: a single Doppler analysis study
Jason T. Martinelli, Saint Louis Univ., St. Louis, MO; and R. W. Przybylinski and Y. J. Lin

P8.2
The role of jet couplet dynamics in the lifecycle of a short-duration, severe mid-latitude squall line within an elevated, marginally unstable environment
Michael A. Jamski, NOAA/NWS, Tallahassee, FL; and M. A. Wool and A. I. Watson

P8.3
Utilizing established techniques in forecasting the potential for derecho development
Timothy W. Troutman, NOAA/NWS, Melbourne, FL; and M. A. Rose and L. M. Trapasso

P8.4
A Localized severe weather event over southwest Ohio on 24 August 1996
Stephen C. Wilkinson, NOAA/NWSFO, Wilmington, OH; and J. T. DiStefano

P8.5
Synoptic-scale conditions associated with the 31 May 1998 Derecho
Walker S. Ashley, Univ. of Nebraska, Lincoln, NE; and M. R. Anderson and C. M. Rowe

P8.6
Environmental shear and upper-level features associated with derecho-producing convective systems
Michael C. Coniglio, SUNY, Albany, NY; and L. F. Bosart

P8.7
Genesis and evolution of the 4 June 1999 derecho
Jeffry S. Evans, NOAA/NWS/NCEP/NSSL/SPC, Norman, OK; and S. F. Corfidi

P8.8
The derecho of July 5, 1999 in Quebec: a rare event
Serge Mainville, EC, Ville St-Laurent, PQ, Canada; and R. Heroux and P. Vaillancourt

P8.9
Narrow streaks of "straight-line" wind damage: Do tornadoes or microbursts produce them?
Kevin R. Knupp, Univ. of Alabama, Huntsville, AL

P8.10
Laboratory Simulation of Downbursts
Taiichi Nagata, Keio Univ., Yokohama, Kanagawa, Japan; and S. Obiand and S. Masuda

P8.11
Severe local windstorm associated with the record-breaking 10 November 1998 mid-latitude cyclone
Augustine J. Iacopelli, WeatherData, Incorporated, Wichita, KS; and J. A. Knox


Poster Session 9
Tornado and Severe Storm Warnings and Damage
Host: 20th Conference on Severe Local Storms
P9.1
Evaluating warning verification statistics and methodologies for displaced real-time (DRT) scenarios
Andrew C. Wood, NOAA/NWS/OSF and CIMMS/Univ. of Oklahoma, Norman, OK; and E. M. Quoetone

P9.2
Damage and Radar Analysis of the Nashville, TN Tornado
Timothy P. Marshall, Haag Engineering Co., Dallas, TX; and T. Troutman

P9.3
Using the Destruction Potential Index (DPI) to compare tornado outbreaks in 1998 and 1999
Michael D. Vescio, NOAA/NWS/SPC, Norman, OK; and R. L. Thompson

P9.4
Wind tunnel tests of the stability of vehicles in severe winds
Thomas Schmidlin, Kent State Univ., Kent, OH; and B. Hammer, Y. Ono, L. S. Miller, G. Thumann, and P. King

8:00 PM-10:00 PM: Thursday, 14 September 2000


Video/Slide Presentation

Friday, 15 September 2000

Monday | Tuesday | Wednesday | Thursday | Friday | Saturday | top

8:00 AM-10:00 AM: Friday, 15 September 2000


Session 13
Joseph G. Galway Session On Severe Storms Forecasting (Parallel with Joint Session J2)
Host: 20th Conference on Severe Local Storms
Organizers: Charles A. Doswell III, NOAA/NSSL; Edward J. Szoke, NOAA
8:00 AM
13.1
RUC-2 Supercell Proximity Soundings, Part I: An Examination of Storm-Relative Winds Normalized to Supercell Depth
Richard L. Thompson, NOAA/NWS/SPC, Norman, OK; and R. Edwards

8:15 AM
13.2
RUC-2 Supercell Proximity Soundings, Part II: An Independent Assessment of Supercell Forecast Parameters
Roger Edwards, NOAA/NWS/SPC, Norman, OK; and R. L. Thompson

8:30 AM
13.3
Development of an index of storminess as a proxy for dry season severe weather in Florida and its relationship with ENSO
Bartlett C. Hagemeyer, NOAA/NWS, Melbourne, FL

8:45 AM
13.4
An assessment of Rapid Update Cycle short-range forecast fields related to convective development
Barry Schwartz, NOAA/ERL/FSL, Boulder, CO; and S. J. Weiss and S. G. Benjamin

9:00 AM
13.5
Properties of the convection scheme in NCEP's Eta Model that affect forecast sounding analysis
Michael E. Baldwin, CIMMS/Univ. of Oklahoma and NOAA/NWS/SPC, Norman, OK; and M. P. Kay and J. S. Kain

9:15 AM
13.6
Parameterized updraft mass flux as a predictor of convective intensity
John S. Kain, NOAA/NSSL and CIMMS, Norman, OK; and M. E. Baldwin

9:30 AM
13.7
Northeast severe weather distribution as a function of flow regime
Alicia C. Cacciola, SUNY, Albany, NY; and L. F. Bosart, S. F. Honikman, T. J. Galarneau Jr., K. D. LaPenta, and J. S. Quinlan

9:45 AM
13.8
Documentation of high based thunderstorms developing on a boundary which became tornadic
Stephen Hodanish, NOAA/NWS, Pueblo, CO

8:00 AM-11:40 AM: Friday, 15 September 2000


Joint Session 1
Advances in Weather Radar Support for Severe Local Storms Research and Aviation (Joint between Ninth Aviation Conference and 20th Severe Local Storms Conference)
Hosts: (Joint between the Ninth Conference on Aviation, Range, and Aerospace Meteorology; and the 20th Conference on Severe Local Storms )
Organizers: Robert E. Saffle, NOAA/NWS; Steve Shema, FAA
8:00 AM
J1.1
NEXRAD Open Systems–Progress and Plans
Robert E. Saffle, NOAA/NWS, Silver Spring, MD; and L. D. Johnson

8:20 AM
J1.2
The NEXRAD enhancements product development team: A Program Update
J. William Conway, NOAA/NSSL and CIMMS/Univ. of Oklahoma, Norman, OK

8:40 AM
J1.3
Continued progress in the development of the WSR-88D OPUP
K. Hondl, NOAA/NSSL, Norman, OK; and E. Ciardi

9:00 AM
J1.4
Progress in the Use of Weather data from Federal Aviation Administration (FAA) Radars in combination with the WSR-88D
Robert E. Saffle, NOAA/NWS, Silver Spring, MD; and M. Istok, S. Shema, S. M. Holt, and L. D. Johnson

9:20 AM
J1.5
The THOR Project Improved thunderstorm forecasts for aviation and the general public
Stephan B. Smith, NOAA/NWS, Silver Spring, MD

9:40 AM
J1.6
The utility of the TDWR data in weather forecast offices
J. T. Johnson, Weather Decision Technologies, Inc., Norman, OK; and D. J. Miller, M. D. Eilts, and R. E. Saffle

10:00 AM
J1.7
Operational Experience with Weather Products Generated through Joint Use of FAA and NWS Weather Radar Sensors
James E. Evans, MIT Lincoln Laboratory, Lexington, MA

10:20 AM
J1.8
FAA Weather Processors use the WSR-88D Data to improve Air Traffic Control Operations
Kevin Young, FAA, Washington, DC; and J. Peyrebrune and T. Lehane

10:40 AM
J1.9
FAA’s Weather and Radar Processor (WARP) Convective Storm Demonstration
Benn Deans, FAA, Washington, DC; and T. Hicks, R. Graff, and S. Walden

11:00 AM
J1.10
FAA Surveillance Radar Data as a complement to the WSR-88D network
Mark E. Weber, MIT Lincoln Laboratory, Lexington, MA

J1.11
The FAA's Medium Intensity Airport Weather System (MIAWS)

11:40 AM
J1.6A
Coffee Break

10:00 AM-10:30 AM: Friday, 15 September 2000


Coffee Break

10:30 AM-12:00 PM: Friday, 15 September 2000


Session 14
Flash Floods, Heavy Rain Events, And Hailstorms (Parallel with Joint Session J2)
Host: 20th Conference on Severe Local Storms
Organizers: Tracy Lorraine Smith, NOAA/ERL/FSL; Catherine A. Finley, Univ. of Northern Colorado
10:30 AM
14.1
The Redbank Creek Flash Flood of 19 July 1996
Robert S. Davis, NOAA/NWS, Pittsburgh, PA

10:45 AM
14.2
Examination of a Training Cold Season Heavy Rain Event Over the Ohio River Valley
James T. Moore, Saint Louis Univ., St. Louis, MO; and J. P. Gagan

11:00 AM
14.3
Impact of improved initialization of mesoscale boundaries on heavy rainfall forecasts in 10 km Eta simulations
William A. Gallus Jr., Iowa State Univ., Ames, IA; and M. Segal and S. Aves

11:15 AM
14.4
Importance of cold pools and associated outflows to the evolution of a convective outbreak in northeastern Spain
Romualdo Romero, NOAA/ERL/NSSL, Norman, OK; and C. A. Doswell III

11:30 AM
14.5
Development of a Radar-based Hail-Detection-Product
Iwan Holleman, KNMI, De Bilt, Netherlands; and H. R. A. Wessels, J. R. A. Onvlee, and S. J. M. Barlag

11:45 AM
14.6
Multiple Bounded Weak Echo Regions in the 16 July 1996 Winnipeg, Manitoba, Canada, Hailstorm Supercell
Patrick J. McCarthy, MSC, Winnipeg, MB, Canada; and A. Erfani and D. Patrick

12:00 PM-12:00 PM: Friday, 15 September 2000


Lunch Break

1:00 PM-1:20 PM: Friday, 15 September 2000


Daily Weather Briefing

1:30 PM-3:00 PM: Friday, 15 September 2000


Session 15
Mesoscale And Synoptic-Scale Processes And Severe Convection I
Host: 20th Conference on Severe Local Storms
Organizers: Henry E. Fuelberg, Florida State Univ.; William A. Gallus Jr., Iowa State Univ.
1:30 PM
15.1
Topographic and synoptic influences on cold season California severe weather: regional patterns in convective storms
Jeffrey N. Brown, California State Univ., Northridge, CA; and S. LaDochy

1:45 PM
15.2
The role of synoptic patterns and temperature and moisture distribution in determining the locations of strong and violent tornado episodes in the north central United States: a preliminary examination
Robert H. Johns, NOAA/NWS/SPC, Norman, OK; and C. Broyles, D. Eastlack, H. Guerrero, and K. Harding

2:00 PM
15.3
Eta model forecasts of return moisture flow
Geoffrey S. Manikin, NOAA/NWS/NCEP/EMC, Camp Springs, MD; and K. E. Mitchell and S. J. Weiss

2:15 PM
15.4
A potential vorticity streamer and its role in the development of a week-long series of mesoscale convective systems, part II: mesoanalysis of a prominent storm in the series
Fernando Caracena, NOAA/ERL/FSL, Boulder, CO; and A. Marroquin and E. I. Tollerud

2:30 PM
15.5
Representation of the 12–14 March 1993 "Storm of the Century" in a high resolution and dynamically adjusted version of the ECHAM4 General Circulation Model
Hans-Stefan Bauer, Max Planck Institute for Meteorology, Hamburg, Germany; and L. Bengtsson

2:45 PM
15.6
Impact of Graupel on the Structure and Bulk Microphysical Aspects of a Vigorous Narrow Cold-Frontal Rainband in 3-D Simulation Experiments
Robert E. Schlesinger, Univ. of Wisconsin, Madison, WI

1:30 PM-3:10 PM: Friday, 15 September 2000


Joint Session 2
Thunderstorm Impacts (Joint Session between Ninth Conference on Aviation, Range, & Aerospace Meteorology and the 20th Conference on Severe Local Storms)
Hosts: (Joint between the Ninth Conference on Aviation, Range, and Aerospace Meteorology; and the 20th Conference on Severe Local Storms )
Organizer: Kevin Knupp, Univ. of Alabama
1:30 PM
J2.1
Evaluation of the NCAR Thunderstorm Auto-Nowcast System
Cynthia K. Mueller, NCAR, Boulder, CO; and T. Saxen, R. Roberts, and J. Wilson

1:50 PM
J2.2
Exploring the Possibility of a Low Altitude Gravity Wave Encounter as the Cause of a General Aviation Accident near Norman Oklahoma on December 6, 1998
David W. Miller, MIT Lincoln Laboratory, Dallas Field Site, Dallas, TX

2:10 PM
J2.3
Global thunderstorm guidance forecasts from the AVN Model from the VVSTORM Algorithm
Donald W. McCann, NOAA/NWS/NCEP/Aviation Weather Center, Kansas City, MO

2:30 PM
J2.4
Use of a new Thunderstorm Potential Index for 12-hour forecasts using mesoscale model data
David I. Knapp, U.S. Army Research Laboratory, White Sands Missile Range, NM; and G. Brooks

2:50 PM
J2.5
Ensemble Cloud Model Applications to Thunderstorm Forecasting
Kimberly L. Elmore, NOAA/NSSL and CIMMS/Univ. of Oklahoma, Norman, OK; and D. J. Stensrud and K. C. Crawford

3:00 PM-3:00 PM: Friday, 15 September 2000


Coffee Break

3:30 PM-4:30 PM: Friday, 15 September 2000


Session 16
Tornado And Severe-Storm Environments
Host: 20th Conference on Severe Local Storms
Organizers: Gregory J. Stumpf, NOAA/NSSL; John P. Monteverdi, San Francisco State Univ.
3:30 PM
16.1
Forecasting Synoptic and Mesoscale Environments for Tornadoes and Derechos in the Northeast United States
Sheryl F. Honikman, SUNY, Albany, NY; and A. C. Cacciola, T. J. Galarneau Jr., L. F. Bosart, and K. D. LaPenta

3:45 PM
16.2
The role of mid-level dry intrusions in tornadogenesis associated with landfalling tropical cyclones in the western Gulf of Mexico
Lon Curtis, KWTX-TV, Waco, TX

4:00 PM
16.3
Convective and shear parameters associated with northern and central California tornadoes during the period 1990–1994
Gary S. Lipari, San Francisco State Univ., San Francisco, CA; and J. P. Monteverdi

4:15 PM
16.4
Shear parameter thresholds for forecasting California tornadic thunderstorms
John P. Monteverdi, San Francisco State Univ., San Francisco, CA; and C. A. Doswell III and G. S. Lipari

4:30 PM-4:30 PM: Friday, 15 September 2000


Oral Sessions End for the Day

4:30 PM-6:30 PM: Friday, 15 September 2000


Poster Session 10
Hail And Hailstorms
Host: 20th Conference on Severe Local Storms
P10.1
An example of a left-split supercell producing 5-inch hail: The Big Spring, Texas Storm of 10 May 1996
George N. Mathews, NOAA/NWS, Midland, TX; and T. J. Turnage

P10.2
A series of thunderstorm activities: environmental conditions and storm track analysis
Jing-Shan Hong, Central Weather Bureau, Taipei, Taiwan; and S. M. Deng

P10.3
Vertically integrated liquid density as an indicator of hail size

P10.4
The use of the Storm-Structure-Severity method for improved hailfall estimation in South Africa
Petrus J. M. Visser, METSYS, South African Weather Bureau, Bethlehem, South Africa


Poster Session 11
Flash Floods And Heavy Rain Events
Host: 20th Conference on Severe Local Storms
P11.1
Sensitivity of a flash flood simulation to convective and boundary layer parameterization schemes
Ahsha N. Tribble, NOAA/NSSL, Norman, OK; and D. J. Stensrud

P11.2
The 21 June 1997 flood: storm scale simulations and implications for operational forecasting
Paul J. Roebber, Univ. of Wisconsin, Milwaukee, WI; and J. Eise

P11.3
Meteorological and hydrological precursors to widespread flash flooding across southeast Ohio on 26–28 June 1998
Josh Korotky, NOAA/NWSFO, Coraopolis, PA

P11.4
The 19 July 1996 Monongalia county west virginia flash flood: an insight to how future warnings may be even more precise
Joseph M. Palko, NOAA/NWS, Pittsburgh, PA; and L. A. Giordano and R. S. Davis


Poster Session 12
Severe Storms Forecasting
Host: 20th Conference on Severe Local Storms
P12.1
The Supercell Composite Parameter (SCP)

P12.2
A severe weather threats checklist to determine the Pre-storm environment
Timothy W. Troutman, NOAA/NWS, Melbourne, FL; and D. B. Elson and M. A. Rose

P12.3
A preliminary look at deep layer shear and middle level lapse rates associated with major tornado outbreaks
Jeffrey P. Craven, NOAA/NWS/SPC, Norman, OK

P12.4
A Comparison of Rapid Update Cycle (RUC-2) Model Soundings with Observed Soundings in Supercell Environments (Also to be presented in an oral session, Paper 2.6A)
Richard L. Thompson, NOAA/NWS/SPC, Norman, OK; and R. Edwards

P12.5
Some remarkable supercell simulations from a quasi-operational local-scale model: skill or "shear" luck?
Edward J. Szoke, NOAA/ERL/FSL, Boulder, CO; and A. Marroquin

P12.6
Transition Severe Convective Events over South-Central Arizona
G. Douglas Green, NOAA/NWS, Phoenix, AZ

P12.7
Forecasting severe weather along the Mogollon Rim Convergence Zone
David O. Blanchard, NOAA/NWS, Flagstaff, AZ

P12.8
Short-term forecasting of tornadic environments in the complex terrain of western North Carolina
Harry Gerapetritis, NOAA/NWS, Greer, SC

P12.9
The Role of Stratospheric Air in a Severe Weather Event: Analyses of PV and Total Ozone
Melissa A. Goering, Iowa State Univ., Ames, IA; and W. A. Gallus Jr., M. A. Olsen, and J. L. Stanford

P12.10
Nowcasting Convective Initation with the Atmospheric Emitted Radiance Interferometer (AERI)
Wayne F. Feltz, CIMSS/Univ. of Wisconsin, Madison, WI

P12.11
Comparing two methods for wind analysis: Numerical simulations of a severe convective event
Phillip L. Spencer, NOAA/NSSL and CIMMS/Univ. of Oklahoma, Norman, OK; and D. J. Stensrud and J. M. Fritsch

P12.12
The 09 December 1999 thundersnow event in west Texas
Patrick S. Market, Univ. of Missouri, Columbia, MO; and C. E. Halcomb

P12.13
Utilizing the NSSL Next Generation Warning Decision Support System in real-time warning operations at the Jackson, Mississippi National weather service (Formerly Paper 9.2)
Alan E. Gerard, NOAA/NWS, Jackson, MS; and J. W. Conway

8:00 PM-10:00 PM: Friday, 15 September 2000


Video/Slide Presentation

Saturday, 16 September 2000

Monday | Tuesday | Wednesday | Thursday | Friday | Saturday | top

8:00 AM-9:43 AM: Saturday, 16 September 2000


Session 17
Severe storm numerical modeling
Host: 20th Conference on Severe Local Storms
Organizers: David J. Stensrud, NOAA/NSSL; Yvette P. Richardson, Univ. of Oklahoma
17.1
Sensitivity of modelled cyclic mesocyclogenesis to microphysics parameterizations

17.2
A numerical simulation of cyclic tornadogenesis

8:02 AM
17.3
THE SENSITIVITY OF SIMULATED STORM STRUCTURE AND INTENSITY TO THE LIFTED CONDENSATION LEVEL AND THE LEVEL OF FREE CONVECTION
Eugene W. McCaul Jr., USRA, Huntsville, AL; and C. Cohen

8:16 AM
17.4
The Influence of Horizontal Variations in Vertical Shear and Low-Level Moisture on Numerically Simulated Convective Storms
Yvette P. Richardson, Univ. of Oklahoma, Norman, OK; and K. K. Droegemeier and R. P. Davies-Jones

8:31 AM
17.5
Numerical simulation of an HP supercell—bow echo transition
C. A. Finley, Univ. of Northern Colorado, Greeley, CO; and W. R. Cotton and R. A. Pielke Sr.

8:46 AM
17.6
Numerical Simulation of a Mini-Supercell over Kanto Plain on 19 September 1990
Hiroshi Niino, Ocean Research Institute, Univ. of Tokyo, Nakano, Tokyo, Japan; and A. Noda

9:01 AM
17.7
Differences in evolution of multiple storms in 8 June 1995 simulation
Brian J. Gaudet, Colorado State Univ., Fort Collins, CO; and W. R. Cotton

9:16 AM
17.8
A numerical simulation of precipitation enhancement as a result of storm-storm interactions
Susan C. van den Heever, Colorado State University, Fort Collins, CO; and W. R. Cotton

9:31 AM
17.1A
The role of low-level shear, mid-level shear, and buoyancy in the intensity of modelled low-level mesocyclones (Formerly Paper P6.15)
Louis J. Wicker, NOAA/NSSL, Norman, OK; and R. W. Carver

10:00 AM-10:00 AM: Saturday, 16 September 2000


Coffee Break

10:30 AM-12:00 PM: Saturday, 16 September 2000


Session 18
Mesoscale And Synoptic Scale Processes And Severe Convection II
Host: 20th Conference on Severe Local Storms
Organizers: Nolan T. Atkins, Lyndon State College; Harald Richter, NOAA/NSSL
10:30 AM
18.1
An analysis of low-level moisture flux convergence prior to the 3 May 1999 Oklahoma City tornadoes
Ralph A. Petersen, NOAA/NWS/NCEP, Camp Springs, MD; and W. F. Feltz, J. Schaefer, and R. Schneider

10:45 AM
18.2
The role of storm/boundary anchoring in the development of supercells in high bulk richardson number environments
Adam L. Houston, Univ. of Illinois, Urbana, IL; and R. B. Wilhelmson

11:00 AM
18.3
The suppression of deep moist convection near the southern plains dryline
Harald Richter, NOAA/NSSL, Norman, OK; and L. F. Bosart

11:15 AM
18.4
Airborne Doppler analysis of a dryline-outflow boundary intersection and subsequent convection
Christopher C. Weiss, Univ. of Oklahoma, Norman, OK; and H. B. Bluestein

11:30 AM
18.5
The vertical distribution of humidity: a crucial factor in the organization of convection
George H. Bryan, Penn State Univ., University Park, PA; and J. M. Fritsch

11:45 AM
18.6
The evolution of two tornadic supercells into an intense bow echo over southwest Nebraska and northwest Kansas
Eric Martello, NOAA/NWS, Jackson, MS

12:00 PM-12:00 PM: Saturday, 16 September 2000


Conference Ends
« Collapse View