38°36'N / 90°27'V / Altitudine 169 m / 14:13 18.05.2026, America/Chicago (UTC-5)
de la: 18.05.2026, 11:22
la: 18.05.2026, 19:00
* 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.
St. Louis,St. Louis
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.
NWS St Louis MO
18.05.2026, 11:22
de la: 18.05.2026, 13:22
la: 18.05.2026, 19:15
* WHAT...Urban area and small stream flooding caused by excessive rainfall is expected. * WHERE...Saint Louis County in east central Missouri... Saint Louis City in east central Missouri... * WHEN...Until 715 PM CDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Overflowing poor drainage areas. * ADDITIONAL DETAILS... - At 122 PM CDT, Doppler radar indicated heavy rain due to thunderstorms. This will cause urban and small stream flooding. Between 1 and 2 inches of rain have fallen. - Additional rainfall amounts of 1 to 2 inches are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... St. Louis, Chesterfield, Wildwood, University City, Ballwin, Kirkwood, Webster Groves, Manchester, Creve Coeur, Clayton, Jennings, Crestwood, Town and Country and Eureka.
St. Louis, MO; St. Louis City, MOTurn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.NWS St Louis MO18.05.2026, 13:22