Winter Weather Advisory issued December 14 at 1:18AM CST until December 14 at 7:00AM CST by NWS St Louis MO

SPC 1300Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0730 AM CDT Mon Apr 21 2025 Valid 211300Z - 221200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF THE UPPER OHIO VALLEY AND LOWER GREAT LAKES...AND PORTIONS OF THE SOUTHEAST... ...SUMMARY... Isolated strong to severe thunderstorms are possible today across the upper Ohio Valley/lower Great Lakes and parts of the Southeast. Damaging winds and marginally severe hail are the primary risks. ...Upper Ohio Valley to the Lower Great Lakes... An upper trough with an attendant 55-70 kt mid-level jet will advance