…FOG EXPECTED TO RESULT IN HAZARDOUS TRAVEL CONDITIONS AT TIMES OVERNIGHT… Southeast winds bringing warm, moist air north over the deep snowcover will result in the formation of fog across the area overnight. The fog is likely to reduce the visibility to less than 1/4 mile at times, resulting in hazardous travel conditions.
Source: Weather.Gov
Special Weather Statement issued March 13 at 10:01PM CDT by NWS