Severe Thunderstorm Warning — Ontonagon 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 August 7 at 6:34PM EDT until August 7 at 7:00PM EDT by NWS Marquette MI
At 634 PM EDT, a severe thunderstorm was located near Nisula, or 20 miles west of Baraga, moving northeast at 25 mph. HAZARD...60 mph wind gusts and half dollar size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. Locations impacted include... Baraga, Chassell, Nisula, Keweenaw Bay, The Lower Entrance of Portage Canal, Arnheim, Twin Lakes, Tapiola, Pelkie, Winona, Pequaming, and Alston.
Effective August 7, 2026 at 6:34 PM ET · Expires August 7, 2026 at 7:00 PM ET
Event Details
Event Type
Severe Thunderstorm Warning
Severity
severe
Issued By
NWS Marquette MI
Expires
August 7, 2026 at 7:00 PM ET
Last Checked
1 hour ago
What To Do
📋 Official NWS Guidance
For your protection move to an interior room on the lowest floor of a building.
Other Active Alerts in Michigan
Severe Thunderstorm Watch
Severe Thunderstorm Watch
Severe Thunderstorm Watch
Severe Thunderstorm Watch
Severe Thunderstorm Watch
Severe Thunderstorm Warning
Get Severe Thunderstorm Warning Alerts for Ontonagon County
StormCast checks the NWS feed continuously and pushes alerts like this directly to your phone — even with the screen off.
Frequently Asked Questions
What does a Severe Thunderstorm Warning mean for Ontonagon 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 hour ago). It's set to expire August 7, 2026 at 7:00 PM ET.
How do I get notified about Severe Thunderstorm Warning alerts for Ontonagon County?
Download StormCast free on Google Play and set Ontonagon 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.