⚠️ Dense Fog Advisory – Sauk; Columbia; Jefferson; Walworth – Tuesday, October 20, 2026

Dense Fog Advisory issued October 20 at 7:47AM CDT until October 20 at 10:00AM CDT by NWS Milwaukee/Sullivan WI

Details

* WHAT…Visibility one quarter mile or less in dense fog.

* WHERE…Columbia, Sauk, Jefferson, and Walworth Counties.

* WHEN…Until 10 AM CDT this morning.

* IMPACTS…Low visibility could make driving conditions hazardous.

Instructions

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

This alert was automatically posted by SkyGuard, MWSC’s severe weather alerting system. Source: National Weather Service.