NWS Chicago ILFA.W 0023September 21, 2026
Flood Warning: Lee, IL
The National Weather Service office in Chicago issued a flood warning for Lee in Illinois, which was in force until 7:00 p.m. local time on September 21. It was the 23rd areal flood warning the NWS office in Chicago issued in 2026. Illinois had 20 flood warnings in September 2026, against 17 in an average September of 2008-2025 (Illinois's flood warnings by year).
ExpiredWarning
In force for 8 hours; it has expired. The agency may have replaced it with a new notice.
The notice
- Issued by
- National Weather Service, Chicago IL
- Area
- Lee
- State
- Illinois
- Level
- Warning
- Issued
- 11:03 a.m. CDT, September 21, 2026
- Expires
- 7:00 p.m. CDT, September 21, 2026
- CAP severity, certainty, urgency
- Severe, Likely, Expected
- VTEC event
- KLOT FA.W 0023
- Official source
- National Weather Service: the notice at its source
Source: National Weather Service: the notice at its source. AreaZine rebuilds this page from the agency's record; the agency's page is the one to act on. A U.S. Government work, in the public domain.
The notice as issued
* WHAT...Flooding caused by excessive rainfall on the Green River and nearby tributaries continues. * WHERE...Portions of Lee County in north central Illinois... * WHEN...Until 700 PM CDT Monday. * IMPACTS...Creeks and streams have risen out of their banks. Roads and streets are flooded. Flooding of structures is occurring. High water may be slow to recede from flooded areas. * ADDITIONAL DETAILS... - At 1101 AM CDT, Doppler radar indicated heavy rain due to thunderstorms. Flooding is ongoing or expected to begin shortly in the warned area. - Lee County Emergency Management reports that flooding continues along the Green River in Lee County. - Some locations that will experience flooding include... Amboy. - http://www.weather.gov/safety/flood
What the agency told people to do
A Flood Warning means flooding is imminent or may already be occurring. Persons along rivers, creeks, and other waterways should take immediate precautions to protect life and property.
Source: National Weather Service: the notice at its source. The text is the agency's, unedited. A U.S. Government work, in the public domain.