016
WGUS63 KLSX 271618
FFALSX
URGENT - IMMEDIATE BROADCAST REQUESTED
FLOOD WATCH
NATIONAL WEATHER SERVICE ST LOUIS MO
1118 AM CDT MON APR 27 2026
ILZ058>060-064-065-069-070-074-098>102-MOZ036-041-042-047>052-
059>065-280200-
/O.NEW.KLSX.FA.A.0003.260427T1618Z-260428T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GREENE IL-MACOUPIN IL-MONTGOMERY IL-BOND IL-FAYETTE IL-CLINTON IL-
MARION IL-WASHINGTON IL-CALHOUN IL-JERSEY IL-MADISON IL-SAINT
CLAIR IL-MONROE IL-PIKE MO-BOONE MO-AUDRAIN MO-MONITEAU MO-COLE
MO-OSAGE MO-CALLAWAY MO-MONTGOMERY MO-LINCOLN MO-GASCONADE MO-
WARREN MO-SAINT CHARLES MO-FRANKLIN MO-SAINT LOUIS MO-SAINT LOUIS
CITY MO-JEFFERSON MO-
INCLUDING THE CITIES OF EDWARDSVILLE, SAINT LOUIS, LITCHFIELD,
SULLIVAN, MEXICO, SALEM, VANDALIA, WASHINGTON, FULTON, ALTON,
CENTRALIA, COLUMBIA, BOWLING GREEN, UNION, CAHOKIA, SAINT CHARLES,
BELLEVILLE, AND JEFFERSON CITY
1118 AM CDT MON APR 27 2026
..FLOOD WATCH IN EFFECT UNTIL 9 PM CDT THIS EVENING
* WHAT...FLASH FLOODING CAUSED BY EXCESSIVE RAINFALL IS POSSIBLE.
* WHERE...PORTIONS OF ILLINOIS, INCLUDING THE FOLLOWING AREAS, BOND
IL, CALHOUN IL, CLINTON IL, FAYETTE IL, GREENE IL, JERSEY IL,
MACOUPIN IL, MADISON IL, MARION IL, MONROE IL, MONTGOMERY IL, SAINT
CLAIR IL AND WASHINGTON IL AND MISSOURI, INCLUDING THE FOLLOWING
AREAS, AUDRAIN MO, BOONE MO, CALLAWAY MO, COLE MO, FRANKLIN MO,
GASCONADE MO, JEFFERSON MO, LINCOLN MO, MONITEAU MO, MONTGOMERY MO,
OSAGE MO, PIKE MO, SAINT CHARLES MO, SAINT LOUIS CITY MO, SAINT
LOUIS MO AND WARREN MO.
* WHEN...UNTIL 9 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...
- THUNDERSTORMS PRODUCING HEAVY RAINFALL MOVING OVER THE SAME AREAS
WILL HAVE THE POTENTIAL TO PRODUCE FLASH FLOODING.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED.
BRITT
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