The May 2003 Tornado Outbreaks Event A: Southern Oklahoma (May 7 7:00 p.m. - May 8 9:00 a.m.) Exercise Case Study Page Event Data Page

1. What severe weather threats did the SPC forecaster have in mind for Oklahoma for the overnight hours of May 7?

2. Look at the Mesonet plots available for the evening of May 7. What portion of Oklahoma has the best environment for severe thunderstorms? If thunderstorms were to form in the area the SPC outlooked for tornadic thunderstorms and then moved east, would they move into an area that was favorable or unfavorable for surface-based storms?

3. Look at loops of KFDR Base Reflectivity and Storm-Total Rainfall data from 10:00 p.m.through 3:00 a.m. Do any of the thunderstorms behave differently from the rest?

4. Examine the available products from 1:00 a.m. through 3:00 a.m. for south central Oklahoma. What threats are imminent for Marshall County and the town of Madill?

OK-FIRST Project, Oklahoma Climatological Survey, 100 East Boyd Street, Suite 1210, Norman, OK 73019. Copyright © 1996-2005 Oklahoma Climatological Survey. All Rights Reserved. Send comments or questions concerning OK-FIRST to okfirst@mesonet.org