Severe Thunderstorm Warning Illinois, Missouri | Effective 03/15/2026 15:01

Headline: 
Severe Thunderstorm Warning issued March 15 at 5:01PM CDT until March 15 at 5:45PM CDT by NWS St Louis MO
Event: 
Severe Thunderstorm Warning
Urgency: 
Immediate
Effective: 
March 15, 2026 - 3:01pm
Expires: 
March 15, 2026 - 3:45pm
Description: 
SVRLSX The National Weather Service in St Louis has issued a * Severe Thunderstorm Warning for... Madison County in southwestern Illinois... Northwestern Monroe County in southwestern Illinois... Saint Clair County in southwestern Illinois... Northeastern Saint Charles County in east central Missouri... Eastern Saint Louis County in east central Missouri... * Until 545 PM CDT. * At 501 PM CDT, a severe thunderstorm was located over Bella Villa, or over Lemay, moving east at 40 mph. HAZARD...60 mph wind gusts and small hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Webster Groves, University City, St. Louis, Clayton, Florissant, Ferguson, Jennings, Cahokia, Godfrey, Granite City, Alton, Belleville, Fairview Heights, East St. Louis, Collinsville, Edwardsville, Swansea and O'Fallon. This includes the following State Parks... Scott Joplin Historic Site, Confluence State Park and Horseshoe Lake State Park. This includes the following highways... Interstate 64 in Illinois between exits 9 and 27. Interstate 55 in Illinois between exits 23 and 37. Interstate 70 in Illinois between exits 21 and 24.
Instruction: 
Seek shelter inside a well-built structure and stay away from windows. This storm is 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 800 PM CDT for portions of southwest Illinois and east central Missouri.
Area Description: 
Madison, IL; Monroe, IL; St. Clair, IL; St. Charles, MO; St. Louis, MO
Forcast Office: 
NWS St Louis MO
Sender: 
w-nws.webmaster@noaa.gov