The Severe Hazards Analysis and Verification Experiment (SHAVE) was a project run by CIMMS researchers in collaboration with the National Severe Storms Laboratory. The primary goal for SHAVE was to collect hail reports at high spatial resolution following thunderstorms. Reports include ‘no hail’ and non-severe (diameters less than 1-inch) reports. This was accomplished by combining data from the Multi-Radar, Multi-Sensor system with geographic information to call members of the public who may have had hailfall at their location. SHAVE was largely student-led and student-run by undergraduate students from the University of Oklahoma supervised by CIMMS scientists. The project also collected wind damage reports, flash flood reports, and winter precipitation reports. The project ran from 2006 through 2015, primarily operating during May through August.
|Shave Student Research Assistants|
|Aaron Treadway||Chip Legett||Lamont Bain|
|Abraham Frei-Pearson||Christa Riley||Margaret Frey|
|Alexandra Wright||Corey Howard||Mary Anne Beers|
|Angelyn Kolodziej||Cory Mottice||Nicole Ramsey|
|Arielle Ahrens||David King||Paul Goree|
|Bethany Hardzinski||Derek Rosseau||Rachael Sigler|
|Brandon Smith||Erika Kohler||Rachel Gaal|
|Brandon Wesbury||Garrett Layne||Sam Coldiron|
|Brent Pesel||James Miller||Sean Dougherty|
|Brett Roberts||Jenifer Bowen||Shannon Kohake|
|Bria Hieatt||Jessica Erlingis||Skylar Williams|
|Brian Koch||Joe Young||Steve Irwin|
|Brian Salsieder||Jordan Christian||Taylor Faires|
|Brian Squitieri||JP Fowler||Tiffany Meyer|
|Brittany Newman||Kelsey Mulder||Wolfgang Hanft|
|Chad Echols||Kevin Biehl||Zach Davis|
The following publications used SHAVE data. If you use SHAVE data in a publication, please let us know so we can add it to the list.
Ortega, K. L., T. M. Smith, K. L. Manross, K. A. Scharfenberg, A. Witt, A. G. Kolodziej, and J. J. Gourley, 2009: The severe hazards analysis and verification experiment. Bull. Amer. Meteor. Soc., 90, 1519-1530. doi: 10.1175/2009BAMS2815.1
Gourley, J. J., J. M. Erlingis, T. M. Smith, K. L. Ortega, and Y. Hong, 2010: Remote collection and analysis of witness reports on flash floods. J. Hydrology, 394, 53-62. doi: 10.1016/j.jhydrol.2010.05.042
Blair, S. F., D. R. Deroche, J. M. Boustead, J. W. Leighton, B. L. Barjenbruch, and W. P. Gargan, 2011: A radar-based assessment of the detectability of giant hail. Electronic J. Severe Storms Meteor., 6 (7), 1–30.
Calianno, M., I. Ruin, and J. J. Gourley, 2013: Supplementing flash flood reports with impact classification. J. Hydrology, 477, 1-16. doi: 10.1016/j.jhydrol.2012.09.036
Gourley, J.J., Y. Hong, Z.L. Flamig, A. Arthur, R. Clark, M. Calianno, I. Ruin, T. Ortel, M.E. Wieczorek, P. Kirstetter, E. Clark, and W.F. Krajewski, 2013: A unified flash flood database across the United States. Bull. Amer. Meteor. Soc., 94, 799–805. doi: 10.1175/BAMS-D-12-00198.1
Ortega, K. L., J. M. Krause, and A. V. Ryzhkov, 2016: Polarimetric radar characteristics of melting hail. Part III: Validation of the algorithm for hail size discrimination. J. Appl. Meteor. Climat., 55, 829-848. doi: 10.1175/JAMC-D-15-0203.1
Ortega, K. L., 2018: Evaluating multi-radar, multi-sensor products for surface hailfall diagnosis. Electronic J. Severe Storms Meteor., 13 (1), 1‒36.
The hail, wind, and winter precipitation datasets are below. For information on using the flash flood data, please visit the NSSL FLASH Database webpage.
License and Attribution
The SHAVE data sets are licensed under CC BY-SA 4.0.
The primary reference for SHAVE is the 2009 BAMS article by Ortega et al. listed above. Each data set also has DOI that should be referenced for the data set used within research.
Summary of the SHAVE Dataset
SHAVE operators made over 255,000 phone calls collecting the data set. Below is a summary of our data collection per year.
|Year||Hail||Wind||Flash Flood||Winter||Data Total|
Where to start?
The SHAVE data sets are quite large. While the data sets are separated into the days the verification phone calls occurred, it can still be difficult on finding a first step with just the reports data. Below are two potentially helpful resources:
1) A list of all hail, wind, and winter reports within 175 km of the nearest WSR-88D. Reports can be “double” or “triple”-counted should they occur within 175 km of 2 or 3 WSR-88D radars.
2) A list of bounding boxes (lat-lon), event start and end times, and a list of neighboring WSR88D cases, for some of the better report density cases. These events total 735. These cases were based on hail reports, but wind reports may also be part of them.
SHAVE Hail Reports
SHAVE Wind Reports
SHAVE Winter Precipitation Reports
For any questions please contact Kiel Ortega.