676 

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