Active AlertsSummit, SD

What: Visibility one quarter mile or less in dense fog.
Where: In Minnesota, Big Stone and Traverse Counties. In South Dakota, Campbell, McPherson, Day, Marshall, and Roberts Counties.
When: Until 7 AM CDT this morning.
Impacts: Low visibility could make driving conditions hazardous.

If driving, slow down, use your headlights, and leave plenty of distance ahead of you.