Winter Storm Warning issued April 27 at 1:54PM MDT until April 29 at 12:00AM MDT by NWS Billings MT

SPC 1300Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0737 AM CDT Mon Apr 28 2025 Valid 281300Z - 291200Z ...THERE IS A MODERATE RISK OF SEVERE THUNDERSTORMS FOR SOUTHERN MN...NORTHERN IA...AND WESTERN WI... ...THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS FROM NORTH-CENTRAL AND WESTERN OK INTO THE TX BIG COUNTRY AND SOUTHWEST TX... ...SUMMARY... Multiple corridors of severe thunderstorms are expected across the Upper Midwest later today into tonight, with a regional severe weather outbreak possible. The most dangerous period is likely during the late afternoon and evening when strong tornado potential