NWS St Louis MOFL.W 0112September 20, 2026
Flood Warning: Adams and Lewis, IL and MO
The National Weather Service office in St Louis issued a flood warning for Adams and Lewis in Illinois, Missouri, which was in force until 3:00 a.m. local time on September 27. It was the 112th river flood warning the NWS office in St Louis 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 3 days; it has expired. The agency may have replaced it with a new notice.
The notice
- Issued by
- National Weather Service, St Louis MO
- Area
- Adams and Lewis
- State
- Illinois
- Level
- Warning
- Issued
- 11:48 a.m. CDT, September 20, 2026
- In force from
- 7:00 p.m. CDT, September 23, 2026
- Expires
- 3:00 a.m. CDT, September 27, 2026
- CAP severity, certainty, urgency
- Severe, Likely, Expected
- VTEC event
- KLSX FL.W 0112
- Official source
- National Weather Service: the notice at its source
Flood Warnings in Illinois since 2008Every warning type in Illinois
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
...The National Weather Service in St Louis has issued a Flood Warning for the following rivers in Missouri...Illinois... Mississippi River at Canton. Mississippi River at Clarksville. Mississippi River at Saverton. Mississippi River at LaGrange. Mississippi River at Hannibal. Mississippi River at Winfield. River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours. * WHAT...Minor flooding is forecast. * WHERE...Mississippi River at LaGrange. * WHEN...From Wednesday evening to late Saturday night. * IMPACTS...At 18.0 feet, The entrance to the lower parking lot at the Mark Twain Casino begins flooding near this height, requiring the use of an alternate entrance. * ADDITIONAL DETAILS... - At 11:00 AM CDT Sunday the stage was 8.6 feet. - Forecast...The river is expected to rise above flood stage Wednesday evening to a crest of 17.9 feet early Thursday afternoon. It will then fall below flood stage Friday evening. - Flood stage is 17.0 feet.
What the agency told people to do
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. This product, along with additional weather and stream information, is available at https://water.noaa.gov/wfo/lsx
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.