Dense Fog Reduces Visibility on I-29 in North Dakota

Patchy fog also reported across eastern North Dakota and northwest Minnesota

Published on Feb. 13, 2026

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The National Weather Service in Grand Forks has issued a weather alert for dense fog reducing visibility to less than one-quarter mile along parts of I-29 in northwest Minnesota and eastern North Dakota early Friday morning. Patchy fog is also possible across a wider area, including the Red River Valley from Fargo to Grand Forks.

Why it matters

Dense fog can make driving extremely hazardous, with poor visibility increasing the risk of accidents. This alert is important for early morning commuters and school transportation routes in the affected areas.

The details

The dense fog has been observed from Hallock to Crookston and east through the Thief River Falls region, extending north toward Roseau, Warroad and Lake of the Woods. Patchy fog is also possible on the North Dakota side of the Red River Valley, from Fargo north through Grand Forks to Cavalier and Langdon, as well as in areas from Mahnomen to Detroit Lakes, Park Rapids, Wadena and Otter Tail County.

  • The dense fog is expected to impact the region early Friday morning, with the greatest impacts before mid-morning as visibility fluctuates.

The players

National Weather Service in Grand Forks

The local office of the National Weather Service that issued the weather alert for the affected region.

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What’s next

Motorists should use caution, reduce speed, and increase following distance when driving in the affected areas.

The takeaway

This weather alert highlights the importance of being prepared for sudden changes in visibility when driving, especially in areas prone to dense fog. Drivers should exercise extra caution and follow the guidance of local authorities to ensure their safety and that of other motorists.