Illinois, Missouri Severe Thunderstorm Warning | Effective 04/15/2026 20:15

Headline: 
Severe Thunderstorm Warning issued April 15 at 10:15PM CDT until April 15 at 11:00PM CDT by NWS St Louis MO
Event: 
Severe Thunderstorm Warning
Urgency: 
Immediate
Effective: 
April 15, 2026 - 8:15pm
Expires: 
April 15, 2026 - 9:00pm
Description: 
SVRLSX The National Weather Service in St Louis has issued a * Severe Thunderstorm Warning for... Monroe County in southwestern Illinois... Central Saint Clair County in southwestern Illinois... Central Jefferson County in east central Missouri... South Central Saint Louis County in east central Missouri... Southern Saint Louis City in east central Missouri... * Until 1100 PM CDT. * At 1015 PM CDT, severe thunderstorms were located along a line from over East Carondelet to over Olympian Village, or along a line from near St. Louis to 6 miles south of Festus, moving east at 45 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Sunset Hills, Crestwood, De Soto, Arnold, Webster Groves, St. Louis, Pevely, Festus, Cahokia, Crystal City, Columbia, East St. Louis, Centreville, Belleville, Fairview Heights, Waterloo, Swansea, O'Fallon and Shiloh. This includes the following State Parks... Mastodon Historic Site, Sandy Creek Covered Bridge Historic Site and Gov. Dunklin's Grave Historic Site. This includes the following highways... Interstate 64 in Illinois between exits 12 and 19. Interstate 55 in Missouri between exits 170 and 191.
Instruction: 
Seek shelter inside a well-built structure and stay away from windows. These storms are capable of producing damaging winds. Tornadoes can develop quickly from severe thunderstorms. Seek shelter immediately in an interior room on the lowest floor of a well-built structure. A Tornado Watch remains in effect until 1200 AM CDT for portions of southwest Illinois and east central Missouri.
Area Description: 
Monroe, IL; St. Clair, IL; Jefferson, MO; St. Louis, MO; St. Louis City, MO
Forcast Office: 
NWS St Louis MO
Sender: 
w-nws.webmaster@noaa.gov