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

Tornado Warning issued August 18 at 4:48PM CDT until August 18 at 5:30PM CDT by NWS Milwaukee/Sullivan WI

Details

TORMKX

The National Weather Service in Milwaukee/Sullivan has issued a

* Tornado Warning for…
Western Columbia County in south central Wisconsin…
Northeastern Sauk County in south central Wisconsin…

* Until 530 PM CDT.

* At 447 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Reedsburg, moving east at 45 mph.

HAZARD…Tornado.

SOURCE…Radar indicated rotation.

IMPACT…Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows, and vehicles will occur. Tree
damage is likely.

* This dangerous storm will be near…
Baraboo, Wisconsin Dells, Lake Delton, and West Baraboo around 455
PM CDT.
Lake Wisconsin around 505 PM CDT.
Portage around 510 PM CDT.

Other locations impacted by this tornadic thunderstorm include Rock
Springs, Okee, North Freedom, Devils Lake St Park, and Merrimac.

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

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

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