WUUS53 KLSX 110857 SVRLSX ILC005-117-119-135-110945- /O.NEW.KLSX.SV.W.0019.260311T0857Z-260311T0945Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service St Louis MO 357 AM CDT Wed Mar 11 2026 The National Weather Service in St Louis has issued a * Severe Thunderstorm Warning for... Bond County in south central Illinois... Southern Montgomery County in south central Illinois... Southeastern Macoupin County in southwestern Illinois... Eastern Madison County in southwestern Illinois... * Until 445 AM CDT. * At 357 AM CDT, severe thunderstorms were located along a line from over Bunker Hill to over Pontoon Beach, or along a line from 9 miles northeast of Bethalto to over Pontoon Beach, moving east at 45 mph. HAZARD...60 mph wind gusts and small hail. SOURCE...At 345 AM, Alton Regional Airport reported a 67 mph gust. IMPACT...Expect damage to roofs, siding, and trees. * This severe thunderstorm will be near... Edwardsville, Glen Carbon, Maryville, Collinsville, Carpenter, Pontoon Beach, Prairietown, Bunker Hill, Granite City and Roxana around 400 AM CDT. Worden, Staunton, Livingston and Wilsonville around 405 AM CDT. Alhambra, Troy, Sawyerville and Benld around 410 AM CDT. Other locations impacted by the severe thunderstorm include Pruett, Poag, Kuhn, Fruit, Hamel, Dorchester, Williamson, Kaufman, White City and New Douglas. This includes the following highways... Interstate 55 in Illinois between exits 23 and 44. Interstate 70 in Illinois between exits 21 and 52. PRECAUTIONARY/PREPAREDNESS ACTIONS... Seek shelter inside a well-built structure and stay away from windows. These storms have produced 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. Report severe weather to your nearest law enforcement agency or the National Weather Service office in St Louis MO. && LAT...LON 3871 9010 3887 8998 3907 9001 3910 8970 3911 8925 3900 8925 3900 8926 3890 8926 3874 8925 3874 8960 3870 8960 TIME...MOT...LOC 0857Z 263DEG 39KT 3900 8996 3886 8992 3872 9005 TORNADO...POSSIBLE HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...<1.00 IN WIND THREAT...OBSERVED MAX WIND GUST...60 MPH $$ MRB