05/18/2026
The National Weather Service has issued a Flood WATCH for St. Clair County until 7pm
WGUS63 KLSX 181402
FFALSX
URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service St Louis MO
902 AM CDT Mon May 18 2026
ILZ100>102-MOZ052-061-063>065-190000-
/O.EXA.KLSX.FA.A.0004.000000T0000Z-260519T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Madison IL-Saint Clair IL-Monroe IL-Lincoln MO-Saint Charles MO-
Saint Louis MO-Saint Louis City MO-Jefferson MO-
Including the cities of Saint Charles, Cahokia, Belleville, Alton,
Edwardsville, and Saint Louis
902 AM CDT Mon May 18 2026
..FLOOD WATCH IN EFFECT UNTIL 7 PM CDT THIS EVENING...
* WHAT...Flash Flooding caused by excessive rainfall continues to be
possible.
* WHERE...Portions of southwest Illinois, including the following
areas, Madison IL, Monroe IL and Saint Clair IL and east central
Missouri, including the following areas, Jefferson MO, Lincoln MO,
Saint Charles MO, Saint Louis City MO and Saint Louis MO.
* WHEN...Until 7 PM CDT this evening.
* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
* ADDITIONAL DETAILS...
- Potential rainfall amounts of 1 to 2 inches, with localized
higher amounts of 2 to 4 inches.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
You should monitor later forecasts and be alert for possible Flood
Warnings. Those living in areas prone to flooding should be prepared
to take action should flooding develop.
&&
$$
MOZ041-047>051-059-060-062-072-073-190000-
/O.CON.KLSX.FA.A.0004.000000T0000Z-260519T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Boone MO-Moniteau MO-Cole MO-Osage MO-Callaway MO-Montgomery MO-
Gasconade MO-Warren MO-Franklin MO-Crawford MO-Washington MO-
Including the cities of Columbia, Jefferson City, Sullivan,
Washington, Union, and Fulton
902 AM CDT Mon May 18 2026
..FLOOD WATCH REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING...
* WHAT...Flash flooding caused by excessive rainfall continues to be
possible.
* WHERE...Portions of central and east central Missouri, including
the following areas, in central Missouri, Boone MO, Callaway MO,
Cole MO, Moniteau MO and Osage MO. In east central Missouri,
Crawford MO, Franklin MO, Gasconade MO, Montgomery MO, Warren MO
and Washington MO.
* WHEN...Until 7 PM CDT this evening.
* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
* ADDITIONAL DETAILS...
- Potential rainfall amounts of 2 to 4 inches, with localized
higher amounts of 4 to 6 inches.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.
&&
$$
BAH
