Flood Warning Issued for Winnebago County, IL and Rock County, WI
This alert is no longer in effect.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 Winnebago County in Illinois and Rock County in Wisconsin, with minor flooding expected on Turtle Creek from late tonight until Friday evening.
Read this weather record in 30 seconds
- Record type
- Flood Warning
- Affected area
- Rock and Winnebago Counties, Illinois and Wisconsin
- Issued
- April 16, 2026
- Issuing authority
- NWS Milwaukee/Sullivan WI
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 Rock and Winnebago Counties, Illinois and Wisconsin.
Flood Warning in Winnebago and Rock Counties
Alert Details
The alert is a Flood Warning, issued by the National Weather Service (NWS) Milwaukee/Sullivan WI. It was issued on April 15, 2026, at 10:46 PM CDT and remains effective until specified times.
Affected Areas
The warning affects Winnebago County in Illinois and Rock County in Wisconsin, specifically impacting Turtle Creek near Clinton. It also references potential effects on Racine County for the Root River Canal at Raymond, but the primary focus is Turtle Creek.
What You Should Do
Turn around and do not drive through flooded roads, as most flood deaths occur in vehicles. Be especially cautious at night when flooding dangers are harder to recognize.
Expected Conditions
Minor flooding is forecast, with the river stage at Turtle Creek currently at 7.9 feet and expected to rise above the 8.0-foot flood stage to a crest of 8.5 feet. This will cause widespread inundation of forest land north of Clinton and on the east side of Beloit, threatening portions of East Creek Road and parking lots at Turtle Creek Parkway near Tiffany Stone Bridge.
Timeline
The onset is at 4:00 AM CDT on April 16, 2026. The alert expires at 11:00 AM CDT on April 16, 2026, and ends at 7:00 PM CDT on April 17, 2026.
Original source: NOAA Official Notice ↗
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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 (1,281 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to April 16, 2026.
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