Headline:
Flash Flood Warning issued May 18 at 5:12PM CDT until May 18 at 8:15PM CDT by NWS St Louis MO
Event:
Flash Flood Warning
Urgency:
Immediate
Effective:
May 18, 2026 - 3:12pm
Expires:
May 18, 2026 - 6:15pm
Description:
FFWLSX
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, O'Fallon, 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.
Instruction:
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Area Description:
St. Charles, MO; St. Louis, MO; St. Louis City, MO
Forcast Office:
NWS St Louis MO
Sender:
w-nws.webmaster@noaa.gov