Hail in Woodward County, Oklahoma

The report was relayed through mPING.

A severe weather episode, with widespread reports of large to very large hail and a tornado, impacted portions of northern Oklahoma during the afternoon and evening of the 17th. Numerous supercells developed along a trailing cold front, with strong wind shear and instability promoting hail sizes as large as tennis ball to just smaller than softball with multiple thunderstorms. A more organized supercell also produced a tornado on the south side of Ponca City, continuing into portions of Osage County (see NWS Tulsa writeup for more information). Additional thunderstorm activity continued into the late evening and early morning hours of the 18th, focusing along a southeastward advancing cold front. This portion of the event featured mainly occasional damaging wind gusts and small hail.