Breaking: Wisconsin Tornado Warnings Finally Expire

Image Source: WISN

Wisconsin tornado warnings expired Tuesday night after a line of severe thunderstorms moved across the region, bringing dangerous winds, hail, heavy rain and the threat of tornadoes. By 9 p.m. Aug. 18, 2026, all severe weather warnings and watches had ended, according to WISN.

The storms still left thousands of residents without electricity in parts of southeastern Wisconsin. Milwaukee, Waukesha and Washington counties reported widespread outages as utility crews began responding to damage and service disruptions.

Wisconsin Tornado Warnings End After Fast-Moving Storms

The evening featured several rounds of severe weather alerts. The National Weather Service issued warnings across portions of Fond du Lac, Dodge, Washington, Jefferson, Milwaukee, Waukesha, Ozaukee, Racine, Sheboygan, Walworth and Kenosha counties.

The primary threats included wind gusts of up to 60 mph, hail, heavy rainfall and isolated tornadoes. Earlier in the evening, some alerts included penny-size and quarter-size hail, while forecasters warned that rapidly developing storms could create hazardous conditions with little notice.

A severe thunderstorm watch was initially issued for Dodge, Fond du Lac, Jefferson, Ozaukee, Sheboygan, Walworth, Washington and Waukesha counties. The watch later expanded to include Milwaukee and Racine counties and was scheduled to remain in effect until 10 p.m.

Urgent Timeline of Tuesday’s Severe Weather

• 4:55 p.m.: Severe thunderstorm warnings were issued for parts of Fond du Lac and Sheboygan counties, with quarter-size hail, heavy rain and strong winds listed as possible threats.
• 5 p.m.: A warning covered western Fond du Lac and northern Dodge counties. Forecasters cited heavy rain and wind gusts reaching 60 mph.
• 5:45 p.m.: A tornado warning was issued for southwestern Dodge County. The storm was located about 7 miles south of Rio and 10 miles west of Columbus, moving east at 40 mph.
• 6:34 p.m.: Tornado warnings were issued for Washington and Waukesha counties.
• 6:51 p.m.: Milwaukee County was placed under a tornado warning until 7:30 p.m.
• 7:15 p.m.: All tornado warnings had been canceled.
• 7:46 p.m.: A severe thunderstorm watch remained for Racine, Kenosha and Walworth counties, while other watches and warnings were canceled.
• 9 p.m.: All severe weather warnings and watches had expired.

Power Outages Climb Across Milwaukee Area

Storm-related power outages became one of the most significant impacts of the evening. At 8:46 p.m., outage totals reported by county included:

• Milwaukee County: 22,827 outages
• Waukesha County: 12,178 outages
• Washington County: 2,477 outages

Earlier reports showed the outage count rising quickly. Milwaukee County had 18,220 outages at 7:25 p.m., while Waukesha County reported 9,542 outages and Washington County reported 2,474 outages at 7:05 p.m.

Residents dealing with outages should avoid downed power lines and report hazards to local authorities or their utility provider. People using generators should operate them outdoors and away from windows to prevent dangerous carbon monoxide buildup.

Low Overall Risk, but Storms Still Packed a Punch

Despite the intensity of some individual storms, the overall severe weather risk was rated Level 1 out of 5. Forecasters said a few storms could still become strong, with gusty winds, small hail and heavy rain identified as the main concerns.

The expiration of the warnings does not immediately eliminate all hazards. Water may remain on roadways, traffic signals can be affected by outages, and debris may create dangerous conditions for drivers and pedestrians. Residents should use caution while traveling and avoid flooded roads whenever possible.

People in Milwaukee, Waukesha, Washington and surrounding counties should continue checking official weather updates if additional storms develop. A quiet radar image after the warnings end does not guarantee that every local hazard has cleared, particularly where flooding or power failures remain.

What Residents Should Do Next

Those affected by the storms should stay away from damaged structures until they are inspected, keep flashlights available and preserve phone battery power during outages. Anyone who encounters a downed line should assume it is energized and move away immediately.

WISN advised residents to continue monitoring weather information and use interactive radar for changing conditions. Emergency alerts remain important because severe thunderstorms can intensify quickly, even when the broader regional risk is considered low.

Frequently Asked Questions

Are the Wisconsin tornado warnings still active?

No. All tornado warnings had been canceled by 7:15 p.m., and all severe weather warnings and watches had expired by 9 p.m. Tuesday.

Which counties experienced the most reported outages?

Milwaukee County reported 22,827 outages at 8:46 p.m., followed by Waukesha County with 12,178 and Washington County with 2,477.

What were the main storm threats?

The main threats were wind gusts up to 60 mph, hail, heavy rain and isolated tornadoes.

What should residents do during another warning?

Residents should move indoors, stay away from windows, monitor official alerts and avoid driving through flooded roads or areas with downed power lines.