The Deadly Oklahoma Tornado Outbreak
of May 3, 1999

Answer to Question 7
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Question 7. To complicate matters on this day, the WSR-88D units at Wichita, KS, and Tulsa, OK, were out of service. How would this affect your decisions between 7:30 and 10:30 p.m. if you were the emergency manager in Sedgwick County, KS?
 


 
 
Answer. With the Wichita and Tulsa radars out of service, emergency managers in Sedgwick County were limited to using the Vance A.F.B. (KVNX) radar. Because this radar is located so far away, emergency managers users would need to account for limitations inherent in using a radar at a large distance, including below-beam effects and beam broadening. Thus, a user should expect to see less intense signatures on the KVNX radar than on the Wichita radar.

In addition, because the Tulsa radar was also out of service, emergency managers in northeast Oklahoma had to rely on a combination of data from the Oklahoma City, Springfield, and Fort Smith radar units.


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