Flood Warning Issued for Winnebago County, Illinois
This alert is no longer in effect.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.
A Flood Warning is in effect for Winnebago County, Illinois, due to expected minor flooding on the Rock River, with river levels rising above flood stage.
Read this weather record in 30 seconds
- Record type
- Flood Warning
- Affected area
- Winnebago County, Illinois
- Issued
- April 16, 2026
- Issuing authority
- NWS Chicago IL
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 Winnebago County, Illinois.
Alert Details
A Flood Warning has been issued by NWS Chicago IL. It is effective from April 16, 2026, at 7:58 AM CDT, with onset at 11:10 AM CDT.
Affected Areas
The warning affects Winnebago County, Illinois, specifically the Rock River from Swanson Road in Roscoe downstream to Shorewood Park in Loves Park, including the Latham Park gauge.
What You Should Do
Persons along rivers and streams in the warned area should take immediate precautions to protect life and property. Avoid the affected areas.
Expected Conditions
Minor flooding is forecast. The river stage was 8.9 feet at 7:30 AM CDT on April 16, 2026, and is expected to rise above the 9.0-foot flood stage late that morning, cresting at 10.0 feet on Saturday morning. At 10.0 feet, property and trails near the boat ramp at Bauer Parkway are threatened, and Illinois DNR considers closure of the Rock River.
Timeline
The alert is effective from April 16, 2026, at 7:58 AM CDT, with onset at 11:10 AM CDT, and expires on April 17, 2026, at 2:00 AM CDT.
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 (1,033 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to April 16, 2026.
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