Flash Flood Warning Issued for Winnebago County, IL
This alert is no longer in effect.
NOAA issued it on July 7, 2026, 6 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 Chicago has issued a Flash Flood Warning for Winnebago County until 9:30 PM CDT on June 11, 2026, due to heavy rainfall from thunderstorms.
Read this weather record in 30 seconds
- Record type
- Flash Flood Warning
- Affected area
- Winnebago County, Illinois
- Issued
- July 7, 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 6 weeks ago; use the issuing agency's live warning service for current conditions in Winnebago County, Illinois.
Alert Details
Flash Flood Warning issued by NWS Chicago IL. Effective from June 11, 2026 at 5:30 PM CDT until June 11, 2026 at 9:30 PM CDT. Alert type code: FFW.
Affected Areas
Winnebago County in north central Illinois, including Rockford, Loves Park, Machesney Park, Roscoe, South Beloit, Rockton, Rockford Airport, Cherry Valley, Winnebago, Davis Junction, Pecatonica, Lake Summerset, Durand, New Milford, Seward, Harrison and Shirland.
What You Should Do
A Flash Flood Warning means rapid-onset flooding is imminent or may already be occurring. Persons along creeks, drainage ditches, and other waterways should take immediate precautions to protect life and property.
Expected Conditions
At 5:30 PM CDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Up to 1 inch of rain has fallen. The expected rainfall rate is 1 to 2 inches in 1 hour. Additional rainfall amounts of 1 to 2 inches are possible.
Timeline
The warning is in effect from 5:30 PM CDT to 9:30 PM CDT on June 11, 2026. Flash flooding is ongoing or expected to begin shortly.
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 (1,097 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to July 7, 2026.
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