NWS Milwaukee/Sullivan WITO.W 0084August 18, 2026
Tornado Warning: Waukesha, WI
The National Weather Service office in Milwaukee/Sullivan issued a tornado warning for Waukesha in Wisconsin, which was in force until 7:15 p.m. local time on August 18. It was the 84th tornado warning the NWS office in Milwaukee/Sullivan issued in 2026. Wisconsin had 8 tornado warnings in August 2026, against 6 in an average August of 2008-2025 (Wisconsin's tornado warnings by year).
ExpiredWarning
In force for 33 minutes; it has expired. The agency may have replaced it with a new notice.
The notice
- Issued by
- National Weather Service, Milwaukee/Sullivan WI
- Area
- Waukesha
- State
- Wisconsin
- Level
- Warning
- Issued
- 6:42 p.m. CDT, August 18, 2026
- Expires
- 7:15 p.m. CDT, August 18, 2026
- CAP severity, certainty, urgency
- Extreme, Observed, Immediate
- VTEC event
- KMKX TO.W 0084
- Official source
- National Weather Service: the notice at its source
Tornado Warnings in Wisconsin since 2008Every warning type in Wisconsin
Source: National Weather Service: the notice at its source. AreaZine rebuilds this page from the agency's record; the agency's page is the one to act on. A U.S. Government work, in the public domain.
The notice as issued
TORMKX The National Weather Service in Milwaukee/Sullivan has issued a * Tornado Warning for... Southern Waukesha County in southeastern Wisconsin... * Until 715 PM CDT. * At 642 PM CDT, a severe thunderstorm capable of producing a tornado was located over Pewaukee, moving southeast at 40 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... Waukesha, New Berlin, Brookfield, Muskego, Pewaukee, Big Bend, and Brookfield around 645 PM CDT. Vernon around 650 PM CDT. Other locations impacted by this tornadic thunderstorm include Waterville, Lapham Peak St Park, Genesee Depot, Genesee, and Summit. Other landmarks included are the following Locations Pewaukee Lake and Pinewoods Campground.
What the agency told people to do
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.
Source: National Weather Service: the notice at its source. The text is the agency's, unedited. A U.S. Government work, in the public domain.