< Wisconsin Dense Fog Advisory | Effective 04/30/2026 04:47

Wisconsin Dense Fog Advisory | Effective 04/30/2026 04:47

Headline: 
Dense Fog Advisory issued April 30 at 6:47AM CDT until April 30 at 9:00AM CDT by NWS Milwaukee/Sullivan WI
Event: 
Dense Fog Advisory
Urgency: 
Expected
Effective: 
April 30, 2026 - 4:47am
Expires: 
April 30, 2026 - 7:00am
Description: 
* WHAT...For the Dense Fog Advisory, visibility less than one mile in dense fog. For the Frost Advisory, temperatures as low as 34 will result in frost formation. * WHERE...Jefferson, Washington, and Waukesha Counties. * WHEN...For the Dense Fog Advisory, until 9 AM CDT this morning. For the Frost Advisory, until 8 AM CDT this morning. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. Low visibility could make driving conditions hazardous.
Instruction: 
Take steps now to protect tender plants from the cold. If driving, slow down, use your headlights, and leave plenty of distance ahead of you.
Area Description: 
Washington; Jefferson; Waukesha
Forcast Office: 
NWS Milwaukee/Sullivan WI