Flash Flood and Hail in Oklahoma, May 24 to 25, 1998

Summary of events for May 24-25 1998:Many severe thunderstorms affected northern Oklahoma during the evening of May 24 and the early morning of May 25. On the evening of May 24, the first thunderstorms moved south of the Kansas state line after 900 PM CDT. After that, individual thunderstorms kept moving along a quasi-stationary front near the Oklahoma/Kansas border, causing one thunderstorm after another to move over the same areas just south of the Kansas state line. One result was widespread rainfall amounts in excess of one inch with a storm total of 3.68 inches reported 8 ESE of Foraker and several unoffical reports of about 4 inches. These storms were also prolific wind producers with thunderstorm gusts of 60 to 70 miles an hour common across the northern border counties. Additionally, there were reports of a tornado touchdown north of Pawhuska and hail as large as quarters. After 1100 PM CDT, the last in the series of storms took a more southward route across Rogers, Mayes, and Delaware Counties, producing severe winds and hail as large as golfballs, before exiting into Benton County AR around 300 AM CDT. Around 200 AM CDT, more severe thunderstorms developed in northwest Oklahoma and moved east along an outflow boundary produced by the earlier thunderstorms. These storms moved across Pawnee and Tulsa Counties between 430 AM and 630 AM CDT, producing marginally severe hail and winds. These storms weakened below severe levels as they moved past Tulsa County.