Flood Advisory — Lee County, Illinois
Minor flooding is expected — not severe enough for a warning, but potentially inconvenient or hazardous for travel.
Current Status
🌊 Active: Flood Advisory
Flood Advisory issued August 9 at 9:09PM CDT until August 10 at 1:15AM CDT by NWS Chicago IL
* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...Lee County in north central Illinois... * WHEN...Until 115 AM CDT. * IMPACTS...Creeks and streams may rise out of their banks. Roads and streets may be flooded. * ADDITIONAL DETAILS... - At 908 PM CDT, Doppler radar indicated nearly stationary showers and thunderstorms across the area. Up to 1 inch of rainfall has occurred thus far. - Additional rainfall amounts up to 3 inches are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Dixon, Amboy, Franklin Grove, Ashton, Paw Paw, Sublette, Woodhaven Lakes, Lee, Compton, Steward, Nelson, West Brooklyn, Harmon, Woodland Shores, Lee Center, Eldena and Nachusa. - http://www.weather.gov/safety/flood
Effective August 9, 2026 at 10:09 PM ET · Expires August 10, 2026 at 2:15 AM ET
Event Details
Event Type
Flood Advisory
Severity
minor
Issued By
NWS Chicago IL
Expires
August 10, 2026 at 2:15 AM ET
Last Checked
1 minute ago
What To Do
📋 Official NWS Guidance
A Flood Advisory means minor flooding along waterways and other poor drainage areas is imminent or may already be occurring. Persons in the advisory area should use caution and avoid flood waters.
Other Active Alerts in Illinois
Tornado Warning
Severe Thunderstorm Watch
Severe Thunderstorm Watch
Severe Thunderstorm Watch
Severe Thunderstorm Watch
Severe Thunderstorm Watch
Get Flood Advisory Alerts for Lee County
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Frequently Asked Questions
What does a Flood Advisory mean for Lee County, Illinois?
Minor flooding is expected — not severe enough for a warning, but potentially inconvenient or hazardous for travel.
Is this Flood Advisory currently active?
Yes — this alert is active as of our last check (1 minute ago). It's set to expire August 10, 2026 at 2:15 AM ET.
How do I get notified about Flood Advisory alerts for Lee County?
Download StormCast free on Google Play and set Lee County, Illinois as one of your monitored locations. StormCast checks the NWS feed continuously and pushes alerts like this directly to your phone — even with the screen off.