Severe Thunderstorm Warning issued August 24 at 9:45PM CDT until August 24 at 10:00PM CDT by NWS Grand Forks ND

Marshall, MN; Polk, MN; Grand Forks, ND; Walsh, ND

Urgency: Immediate

Certainty: Observed

Onset: 8/25/2026, 2:45:00 AM

Expires: 8/25/2026, 3:00:00 AM

Details

At 945 PM CDT, a severe thunderstorm was located near Ardoch, or 18 miles south of Grafton, moving east at 40 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... Alvarado, Manvel, Oslo, Ardoch, Big Woods, and Poland. This includes Interstate 29 between mile markers 152 and 166.

What To Do

For your protection move to an interior room on the lowest floor of a building.

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Source: National Weather Service.