538 

WGUS63 KLSX 191012

FFALSX



Flood Watch

National Weather Service St Louis MO

512 AM CDT Tue May 19 2026



ILZ064-065-069-070-074-098-099-MOZ034>036-041-042-047>051-059-060-

062-072-073-191800-

/O.CON.KLSX.FA.A.0004.000000T0000Z-260519T1800Z/

/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

Bond IL-Fayette IL-Clinton IL-Marion IL-Washington IL-Calhoun IL-

Jersey IL-Monroe MO-Ralls MO-Pike MO-Boone MO-Audrain 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 Jefferson City, Union, Columbia, Fulton,

Salem, Washington, Centralia, Vandalia, Mexico, Bowling Green, and

Sullivan

512 AM CDT Tue May 19 2026



...FLOOD WATCH REMAINS IN EFFECT UNTIL 1 PM CDT THIS AFTERNOON...



* WHAT...Flash flooding caused by excessive rainfall continues to be

  possible.



* WHERE...Portions of Illinois, including the following areas, Bond

  IL, Calhoun IL, Clinton IL, Fayette IL, Jersey IL, Marion IL and

  Washington IL and Missouri, including the following areas, Audrain

  MO, Boone MO, Callaway MO, Cole MO, Crawford MO, Franklin MO,

  Gasconade MO, Moniteau MO, Monroe MO, Montgomery MO, Osage MO, Pike

  MO, Ralls MO, Warren MO and Washington MO.



* WHEN...Until 1 PM CDT this afternoon.



* 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. These amounts will occur across areas that

    experienced heavy rainfall yesterday.





PRECAUTIONARY/PREPAREDNESS ACTIONS...



You should monitor later forecasts and be prepared to take action

should Flash Flood Warnings be issued.



&&



$$



ILZ100>102-MOZ052-061-063>065-191800-

/O.CON.KLSX.FA.A.0004.000000T0000Z-260519T1800Z/

/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 Alton, Saint Charles, Belleville,

Edwardsville, Cahokia, and Saint Louis

512 AM CDT Tue May 19 2026



...FLOOD WATCH REMAINS IN EFFECT UNTIL 1 PM CDT THIS AFTERNOON...



* 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 1 PM CDT this afternoon.



* 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. These amounts will occur across areas that

    experienced heavy rainfall yesterday.





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.



&&



$$



Peine