Flood Warning Issued for Jefferson County and Surrounding Areas in Wisconsin
This alert is no longer in effect.
NOAA issued it on April 16, 2026, 4 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.
The National Weather Service has issued a Flood Warning for Jefferson County and other Wisconsin areas, with moderate flooding expected from late tonight due to rising river levels.
Read this weather record in 30 seconds
- Record type
- Flood Warning
- Affected area
- Southeastern Wisconsin
- Issued
- April 16, 2026
- Issuing authority
- NWS Milwaukee
Flood notices turn on location and timing. Treat the named area as this record's scope; do not assume nearby counties, parishes, or waterways were included.
Record status: historical. It was issued 4 months ago; use the issuing agency's live warning service for current conditions in Southeastern Wisconsin.
Flood Warning in Wisconsin
Alert Details
The National Weather Service in Milwaukee/Sullivan WI has issued a Flood Warning. This alert is effective from late tonight and continues until further notice.
Affected Areas
The warning affects Jefferson County, as well as Waukesha County, Milwaukee County, Sheboygan County, and Winnebago, Green, and Rock Counties in Wisconsin.
What You Should Do
Turn around and do not drown when encountering flooded roads. Most flood deaths occur in vehicles.
Expected Conditions
Moderate flooding is forecast, with the Rock River at Jefferson expected to rise to 12.2 feet. At 11:00 PM CDT Wednesday, the stage was 9.6 feet, and flood stage is 10.0 feet.
Timeline
The warning is effective from 5:00 AM CDT on April 16, 2026, and expires at 11:30 AM CDT on April 16, 2026, though it may continue until further notice.
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 (869 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to April 16, 2026.
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