Severe Thunderstorm Warning Issued for Walworth, Rock, Jefferson Counties WI
This alert is no longer in effect.
NOAA issued it on May 24, 2026, 3 months ago. Warnings of this kind stay in effect for hours to a few days, so this page is a historical record of what was issued, not a current warning. For conditions where you are right now, check weather.gov (US), weather.gc.ca (Canada), the Met Office (UK), or the Bureau of Meteorology (Australia).
Areazine synthesizes this NWS weather alert directly from NOAA's official public data feed. See our methodology for full source attribution and refresh cadence.
NWS Milwaukee/Sullivan has issued a Severe Thunderstorm Warning for Walworth, eastern Rock, and Jefferson counties in Wisconsin until 2:00 AM CDT.
Read this weather record in 30 seconds
- Record type
- Severe Thunderstorm Warning
- Affected area
- Southern Wisconsin
- Issued
- May 24, 2026
- Issuing authority
- NWS Milwaukee/Sullivan WI
Storm notices can cover different combinations of wind, hail, lightning, and rainfall. Use the original notice for the hazards and boundaries attached to this specific record.
Record status: historical. It was issued 3 months ago; use the issuing agency's live warning service for current conditions in Southern Wisconsin.
Alert Details
A Severe Thunderstorm Warning has been issued by the National Weather Service Milwaukee/Sullivan WI. The alert is effective from May 16, 2026 at 1:06 AM CDT until May 16, 2026 at 2:00 AM CDT.
Affected Areas
The warning covers Walworth County, eastern Rock County, and Jefferson County in southeastern and south central Wisconsin. Impacted locations include Janesville, Beloit, Watertown, Whitewater, Fort Atkinson, Elkhorn, Delavan, Jefferson, Lake Geneva, Lake Mills, Milton, East Troy, Waterloo, Williams Bay, Genoa City, Walworth, Johnson Creek, Clinton, Palmyra, and Fontana-On-Geneva Lake.
What You Should Do
Residents should move to an interior room on the lowest floor of a building for protection.
Expected Conditions
At 1:06 AM CDT, severe thunderstorms were located along a line extending from near Marshall to near Footville to near Lake Summerset, moving east at 55 mph. Hazards include 60 mph wind gusts and hail up to 0.75 inches. Radar indicated source. Expect damage to roofs, siding, and trees.
Timeline
The warning is in effect until 2:00 AM CDT on May 16, 2026.
Original source: NOAA Official Notice ↗
Related Weather Alerts
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Two Areazine-derived peer sets for this NWS weather alert: nearest notices by body length and by same severity near the same agency date. Peers come from other categories so they are not the same-feed Related list above.
Similar body length
Nearest notices by article body length (1,113 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to May 24, 2026.
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