SPC AC 121236 Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0736 AM CDT Wed Aug 12 2026 Valid 121300Z - 131200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM THE NORTHERN/CENTRAL PLAINS TO THE LOWER OHIO VALLEY... ...SUMMARY... Severe gusts and large hail are the primary hazards. Expecting a gradual intensification of storms this morning across IL with a risk for scattered severe gusts and associated wind damage. Ample heating will result in moderate buoyancy and 30+ kt effective shear---supporting some organization to the scattered thunderstorms forecast to develop later this afternoon/evening. Initial cells will pose a threat for large hail and severe gusts.