Wisconsin Moderate Special Weather Statement | Effective 08/18/2026 20:47

Headline: 
Special Weather Statement issued August 18 at 10:47PM CDT by NWS Milwaukee/Sullivan WI
Event: 
Special Weather Statement
Urgency: 
Expected
Effective: 
August 18, 2026 - 8:47pm
Expires: 
August 18, 2026 - 11:00pm
Description: 
Fog developed in the Rock River Valley from Watertown to Janesville, Horicon Marsh, and portions of Fond du Lac County. The fog is gradually expanding eastward. Expect visibility of 1 mile or less in low-lying areas. If traveling, use low beam headlights and slow down when encountering sudden drops in visibility.
Area Description: 
Fond Du Lac; Dodge; Washington; Jefferson; Waukesha; Rock; Walworth
Forcast Office: 
NWS Milwaukee/Sullivan WI
Sender: 
w-nws.webmaster@noaa.gov