The Deadly Oklahoma Tornado Outbreak
of May 3-4, 1999

Case Study
Case Study Page
Next Question

1.  Look at the moisture field observed by the Mesonet between 1:00 and 5:00 p.m. What changes occur over the state during this time period?



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