⚠️ Severe Thunderstorm Warning – Columbia, WI; Sauk, WI – Tuesday, August 18, 2026

Severe Thunderstorm Warning issued August 18 at 3:57PM CDT until August 18 at 5:15PM CDT by NWS Milwaukee/Sullivan WI

Details

SVRMKX

The National Weather Service in Milwaukee/Sullivan has issued a

* Severe Thunderstorm Warning for…
Western Columbia County in south central Wisconsin…
Sauk County in south central Wisconsin…

* Until 515 PM CDT.

* At 356 PM CDT, severe thunderstorms were located along a line
extending from 8 miles northwest of Elroy to 7 miles east of La
Farge to Viroqua, moving southeast at 45 mph.

HAZARD…60 mph wind gusts and penny size hail.

SOURCE…Radar indicated.

IMPACT…Expect damage to roofs, siding, and trees.

* Locations impacted include…
Baraboo, Reedsburg, Prairie Du Sac, Sauk City, Wisconsin Dells,
Lake Wisconsin, Lodi, Lake Delton, Spring Green, West Baraboo,
Plain, Bluffview, North Freedom, Merrimac, La Valle, Rock Springs,
Loganville, Ironton, Lime Ridge, and Harmony Grove.

Other landmarks included are the following Locations Mirror Lake
State Park, Gibraltar Rock Natural Area County Park, Pine Island
State Wildlife Area, and Kilbourn Dam.

Instructions

For your protection move to an interior room on the lowest floor of a
building.

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