Flood Warning Issued for Hancock and McDonough Counties in Illinois
This alert is no longer in effect.
NOAA issued it on April 28, 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.
A Flood Warning has been issued by the National Weather Service for Hancock and McDonough counties in Illinois, forecasting minor flooding on the La Moine River from this evening until early Tuesday morning.
Read this weather record in 30 seconds
- Record type
- Flood Warning
- Affected area
- Western Illinois
- Issued
- April 28, 2026
- Issuing authority
- NWS Quad Cities IA 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 3 months ago; use the issuing agency's live warning service for current conditions in Western Illinois.
Flood Warning in Illinois
Alert Details
A Flood Warning has been issued by the National Weather Service (NWS) Quad Cities IA IL. It is effective starting at 5:50 AM CDT on April 18, 2026.
Affected Areas
The warning affects Hancock and McDonough counties in Illinois, specifically the La Moine River at Colmar.
What You Should Do
Turn around and do not drown when encountering flooded roads. Do not attempt to drive around barricades or through flooded areas.
Expected Conditions
Minor flooding is forecast, with the river expected to rise above the 20.0-foot flood stage to a crest of 21.9 feet. At 20.0 feet, water will affect the lowest portions of Lambert Road and Lamar Road.
Timeline
The warning is effective from 5:50 AM CDT on April 18, 2026, with onset at 6:27 PM CDT on April 18, 2026. It expires at 6:00 AM CDT on April 19, 2026, and ends at 4:00 AM CDT on April 21, 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 (904 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to April 28, 2026.
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