Severe Thunderstorm Warning — St. Clair County, Michigan
A thunderstorm capable of producing damaging winds of 58+ mph and/or 1-inch hail has been detected.
Current Status
⛈️ Active: Severe Thunderstorm Warning
Severe Thunderstorm Warning issued September 2 at 6:52PM EDT until September 2 at 7:45PM EDT by NWS Detroit/Pontiac MI
At 652 PM EDT, a severe thunderstorm was located over Capac, moving east at 35 mph. HAZARD...Two inch hail and 70 mph wind gusts. SOURCE...Radar indicated. IMPACT...People and animals outdoors will be injured. Expect hail damage to roofs, siding, windows, and vehicles. Expect considerable tree damage. Wind damage is also likely to mobile homes, roofs, and outbuildings. This severe storm will be near... Yale and Emmett around 655 PM EDT. Marysville around 715 PM EDT. Port Huron around 720 PM EDT. Other locations impacted by this severe thunderstorm include Fort Gratiot, North Street, Avoca, Jeddo, Blaine, Fargo, Lynn Township, Goodells, Brockway, and Smiths Creek.
Effective September 2, 2026 at 6:52 PM ET · Expires September 2, 2026 at 7:45 PM ET
Event Details
Event Type
Severe Thunderstorm Warning
Severity
severe
Issued By
NWS Detroit/Pontiac MI
Expires
September 2, 2026 at 7:45 PM ET
Last Checked
1 minute ago
What To Do
📋 Official NWS Guidance
Remain alert for a possible tornado! Tornadoes can develop quickly from severe thunderstorms. If you spot a tornado go at once into the basement or small central room in a sturdy structure. For your protection move to an interior room on the lowest floor of a building.
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Get Severe Thunderstorm Warning Alerts for St. Clair County
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Frequently Asked Questions
What does a Severe Thunderstorm Warning mean for St. Clair County, Michigan?
A thunderstorm capable of producing damaging winds of 58+ mph and/or 1-inch hail has been detected.
Is this Severe Thunderstorm Warning currently active?
Yes — this alert is active as of our last check (1 minute ago). It's set to expire September 2, 2026 at 7:45 PM ET.
How do I get notified about Severe Thunderstorm Warning alerts for St. Clair County?
Download StormCast free on Google Play and set St. Clair County, Michigan as one of your monitored locations. StormCast checks the NWS feed continuously and pushes alerts like this directly to your phone — even with the screen off.