Tornado Warnings Issued Across Southeast Wisconsin as Severe Storms Bring Flood Risk

Tornado warnings, flash flood alerts and severe thunderstorm warnings swept across southeast Wisconsin on Friday evening as a powerful storm system moved rapidly through the region, triggering emergency alerts in multiple counties including Milwaukee, Waukesha, Racine, Kenosha, Walworth and Jefferson.

The National Weather Service had already placed much of the state under a tornado watch earlier in the day, warning that conditions were favorable for severe storms capable of producing tornadoes, large hail and damaging winds. By late afternoon, those risks began to materialize as storms intensified and pushed east across Wisconsin between 5 p.m. and 11 p.m., with the most dangerous conditions reported between 6 p.m. and 10 p.m.

Warnings were issued and extended repeatedly through the evening as storm cells strengthened. At one point, tornado warnings were active simultaneously across several counties, including Milwaukee County, where sirens were reported sounding. Authorities confirmed radar-indicated rotation in multiple areas, and in Walworth County, a tornado was confirmed near Delavan, with debris reported flying through the air.

Tornado warnings, confirmed activity and fast-moving storms

The storm system produced a series of rapidly changing warnings across southeast Wisconsin. Tornado warnings were issued for Racine, Kenosha and Walworth counties, later extending into Milwaukee and Waukesha counties. The National Weather Service indicated that storms capable of producing tornadoes were moving east at speeds of around 25 to 30 mph, putting multiple communities in the path within minutes.

In addition to the confirmed tornado near Delavan, weather officials also received reports of tornado activity in other parts of the state, including Marathon County earlier in the day. Several warnings highlighted the risk of quarter-sized hail and destructive winds, with some storms capable of producing gusts between 60 and 70 mph.

In the Milwaukee area and surrounding suburbs, severe thunderstorm warnings remained in effect alongside tornado warnings, meaning residents faced overlapping threats. The combination of strong wind, hail and possible tornadoes made conditions particularly dangerous during the evening commute and early night hours.

Flooding risk worsens after days of heavy rain

Alongside the tornado threat, flooding quickly became one of the biggest concerns across the region. Southeast Wisconsin had already received nearly seven inches of rainfall over the previous week — almost double the typical monthly total — leaving the ground saturated and rivers running high.

Forecasters warned that an additional 1 to 3 inches of rain could fall Friday night, increasing the likelihood of flash flooding. Multiple flash flood warnings were issued for counties including Milwaukee, Jefferson, Racine, Walworth and Waukesha, with warnings in some areas lasting into late evening.

The impact was already visible in several locations. In Milwaukee County, Wisconsin Highway 241 near the Root River was closed in both directions due to high water levels. In Waukesha, officials urged residents to stay away from flooded roads, riverwalk areas and parks near the Fox River, warning that water levels could rise quickly and unpredictably.

Across the state, flooding had already caused significant disruption earlier in the week, with reports of submerged streets, homes and businesses in parts of northeast Wisconsin. Officials warned that the new round of storms could worsen an already fragile situation, especially in urban areas where drainage systems were under pressure.

Power outages, damage reports and public safety warnings

As storms moved through the region, power outages began to mount. We Energies reported more than 1,100 outages in Racine County and over 500 in Walworth County during the evening, with numbers expected to fluctuate as crews responded to damage.

There were also reports of downed trees, power lines and debris in several counties. In Rock County, authorities said numerous roads were blocked by fallen trees and flooding, urging residents to avoid unnecessary travel. Officials across Wisconsin repeated the same message: stay off the roads unless absolutely necessary and never attempt to drive through flooded areas.

Large hail added to the damage risk, with some storms producing hail capable of damaging roofs, windows and vehicles. Combined with strong winds, the storms had the potential to cause widespread structural damage even in areas that did not experience tornadoes directly.

School districts and local authorities took precautionary steps ahead of the storms. Milwaukee Public Schools canceled all after-school activities, while several other districts, including Wauwatosa and Menomonee Falls, also called off evening events. Families were encouraged to pick up students early as conditions worsened.

Emergency officials emphasized that outdoor warning sirens are not designed to be heard inside homes. Residents were urged to rely on mobile alerts, weather apps or NOAA weather radios to stay informed, especially in case of power outages overnight.

For real-time updates and safety information, residents can follow official guidance from the National Weather Service at weather.gov.

By late evening, forecasters expected the most severe storms to gradually move out of southeast Wisconsin, though rain could linger into early Saturday morning. A cooler air mass is expected to settle in over the weekend, bringing more stable conditions after a volatile and dangerous night across the state.

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