028 
WGUS53 KLSX 182212
FFWLSX
MOC183-189-510-190115-
/O.NEW.KLSX.FF.W.0021.260518T2212Z-260519T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service St Louis MO
512 PM CDT Mon May 18 2026

The National Weather Service in St Louis has issued a

* Flash Flood Warning for...
  Saint Charles County in east central Missouri...
  Saint Louis County in east central Missouri...
  Saint Louis City in east central Missouri...

* Until 815 PM CDT.

* At 512 PM CDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Between 1 and 2 inches of rain
  have fallen. Additional rainfall amounts of 0.5 to 2 inches are
  possible in the warned area. Flash flooding is ongoing or expected
  to begin shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar indicated.

  IMPACT...Flash flooding of small creeks and streams, urban areas,
           highways, streets and underpasses as well as other poor
           drainage and low-lying areas.

* Some locations that will experience flash flooding include...
  St. Louis, OFallon, St. Charles, St. Peters, Florissant,
  Chesterfield, Wildwood, University City, Ballwin, Wentzville,
  Kirkwood, Maryland Heights, Hazelwood, Webster Groves, Ferguson,
  Manchester, Creve Coeur and Overland.

This includes the following State Parks...
Babler Memorial State Park, Scott Joplin Historic Site, Route 66
State Park, Castlewood State Park, Confluence State Park and First
Missouri State Capitol Historic Site.

This includes the following highways...
Interstate 70 in Missouri between exits 203 and 231. Interstate 44 in
Missouri between exits 261 and 277.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, dont drown when encountering flooded roads. Most flood
deaths occur in vehicles.

&&

LAT...LON 3864 9073 3854 9090 3855 9096 3889 9096
      3888 9082 3892 9079 3893 9067 3887 9056
      3897 9044 3884 9011 3872 9021 3861 9018
      3839 9034 3845 9034 3848 9042 3850 9041
      3845 9068 3847 9074

FLASH FLOOD...RADAR INDICATED

$$

Walsh

468 
WGUS73 KLSX 190107
FFSLSX

Flash Flood Statement
National Weather Service St Louis MO
807 PM CDT Mon May 18 2026

MOC183-189-510-190117-
/O.EXP.KLSX.FF.W.0021.000000T0000Z-260519T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Saint Charles MO-Saint Louis MO-Saint Louis City MO-
807 PM CDT Mon May 18 2026

...FLASH FLOOD WARNING WILL EXPIRE AT 815 PM CDT THIS EVENING FOR
SAINT CHARLES AND SAINT LOUIS COUNTIES AND THE SAINT LOUIS CITY...

The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.

A Flood Watch remains in effect until 100 PM CDT Tuesday for portions
of southwest Illinois and east central Missouri.

A Flood Watch remains in effect until 100 PM CDT Tuesday for portions
of southwest Illinois and Missouri.

A Flood Watch remains in effect until 100 PM CDT Tuesday for portions
of central and east central Missouri.

&&

LAT...LON 3864 9073 3854 9090 3855 9096 3889 9096
      3888 9082 3892 9079 3893 9067 3887 9056
      3897 9044 3884 9011 3872 9021 3861 9018
      3839 9034 3845 9034 3848 9042 3850 9041
      3845 9068 3847 9074

$$

Maples