Flash Flood Warning Issued for McDonough and Warren Counties in Illinois
This alert is no longer in effect.
NOAA issued it on July 18, 2026, 5 weeks 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.
NWS Quad Cities has issued a Flash Flood Warning for McDonough County and southern Warren County until 3:15 PM CDT Wednesday due to thunderstorms producing heavy rain.
Read this weather record in 30 seconds
- Record type
- Flash Flood Warning
- Affected area
- West Central Illinois
- Issued
- July 18, 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 5 weeks ago; use the issuing agency's live warning service for current conditions in West Central Illinois.
Alert Details
A Flash Flood Warning (event code FFW) has been issued by the National Weather Service Quad Cities IA IL. The alert was sent at 9:08 AM CDT on June 17, 2026, and is effective immediately until 3:15 PM CDT on June 17, 2026.
Affected Areas
The warning covers McDonough County in west central Illinois and southern Warren County in west central Illinois. Locations that will experience flash flooding include Macomb, Bushnell, Colchester, Blandinsville, Industry, Good Hope, Prairie City, Bardolph, Tennessee, Sciota, Western Illinois University, Fandon, Adair, New Philadelphia, Little Swan Lake, Colmar, Walnut Grove, Plymouth, Macomb Municipal Airport, McDonough County 4-H Grounds, and Argyle Lake State Park.
What You Should Do
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles.
Expected Conditions
Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1 and 3 inches of rain have fallen, with additional rainfall amounts of 1 to 3 inches possible. Flash flooding is ongoing or expected to begin shortly.
Timeline
The Flash Flood Warning is in effect from 9:08 AM CDT until 3:15 PM CDT on June 17, 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 (1,219 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to July 18, 2026.
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