Michigan Severe Severe Thunderstorm Warning | Effective 07/21/2026 09:29

Headline: 
Severe Thunderstorm Warning issued July 21 at 12:29PM EDT until July 21 at 1:30PM EDT by NWS Detroit/Pontiac MI
Event: 
Severe Thunderstorm Warning
Urgency: 
Immediate
Effective: 
July 21, 2026 - 9:29am
Expires: 
July 21, 2026 - 10:30am
Description: 
SVRDTX The National Weather Service in Detroit/Pontiac has issued a * Severe Thunderstorm Warning for... Southeastern Sanilac County in southeastern Michigan... St. Clair County in southeastern Michigan... * Until 130 PM EDT. * At 1227 PM EDT, a severe thunderstorm was located over Melvin, or near Brown City, moving southeast at 40 mph. HAZARD...60 mph wind gusts and quarter size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. * This severe thunderstorm will be near... Yale around 1235 PM EDT. Lakeport around 1245 PM EDT. Port Huron around 1255 PM EDT. Marysville around 105 PM EDT. A second strong, potentially severe thunderstorm was located over Capac tracking east at 40 mph. Other locations impacted by this severe thunderstorm include North Street, Birch Beach, Lynn Township, Amador, Goodells, Brockway, Smiths Creek, Wadhams, Riley Center, and Fort Gratiot.
Instruction: 
For your protection move to an interior room on the lowest floor of a building.
Area Description: 
St. Clair, MI; Sanilac, MI
Forcast Office: 
NWS Detroit/Pontiac MI