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Synopsis

 

On Sunday, May 19th, with an upper level low approaching off the Colorado Front Range through the Panhandles, a fairly stout dry line began to surge eastward off the Texas Caprock and Panhandle reaching as far east as El Reno, OK. With deep layer moisture and favorable wind fields across central Oklahoma, supercell thunderstorms quickly developed along the dry line, primarily along the Interstate 44 (I-44) corridor, and moved quickly to the east/northeast. As these storms gained intensity, many produced tornadoes, with tornadoes impacting Edmond, Arcadia, Luther and Carney, Norman and Lake Thunderbird, and Shawnee, and two near the town of Prague. The most intense tornado occurred within the city of Shawnee, where EF-4 damage was found as the tornado traveled north of the city before crossing U.S. Interstate Highway 40 (I-40).

 

Below is a map with the preliminary damage path of the Lake Thunderbird-Bethel Acres-Shawnee tornado. Contours delineate the extent of EF-0 (light blue), EF-1 (green), EF-2 (yellow), EF-3 (orange), and EF-4 (red) damage from the survey.