Flood Warning Issued for Jefferson County, Wisconsin

Source: NOAA · Jefferson County, Wisconsin

This alert is no longer in effect.

NOAA issued it on April 15, 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.

A Flood Warning is in effect for Jefferson County, Wisconsin, where minor flooding is occurring on the Rock River at Watertown, with major flooding forecast.

Read this weather record in 30 seconds

Record type
Flood Warning
Affected area
Jefferson County, Wisconsin
Issued
April 15, 2026
Issuing authority
NWS National Office

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 Jefferson County, Wisconsin.

Alert Details

A Flood Warning has been issued by NWS Milwaukee/Sullivan WI. It is effective from April 15, 2026, at 11:51 AM CDT.

Affected Areas

The warning affects Jefferson County, Wisconsin, specifically the Rock River at Watertown.

What You Should Do

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Avoid flooded areas.

Expected Conditions

Minor flooding is occurring, and major flooding is forecast. The river stage is currently at 5.9 feet, with flood stage at 5.5 feet. It is expected to crest at 6.6 feet. Impacts include flooded streets and parks in Watertown.

Timeline

The alert is effective from April 15, 2026, at 11:51 AM CDT and expires on April 16, 2026, at 12:00 AM CDT. It is in effect from this morning until further notice.

Original source: NOAA Official Notice ↗

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Nationwide notices with similar length or severity timing 8

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.

Frequently Asked Questions

Common questions about this NWS weather alert.

What is this NWS weather alert about?
A Flood Warning is in effect for Jefferson County, Wisconsin, where minor flooding is occurring on the Rock River at Watertown, with major flooding forecast.
Which agency issued this alert?
This alert was issued by NOAA. The original notice is available at the source link at the bottom of this article.
How severe is this alert?
This alert is classified as "high" severity. Take precautions and monitor for updates.
What area is affected?
This alert affects Jefferson County, Wisconsin. Check with NOAA for the most current geographic scope.
Where can I find more Weather Alerts updates?
Browse the full Weather Alerts feed on Areazine at areazine.com/weather/ for the latest updates from NOAA and other agencies.