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Home Return to list Severe Thunderstorm Warning 0235 Issued by the St. Louis Forecast Office
Action: New Issued At: 2026-08-12 18:43:59
193
WUUS53 KLSX 122343
SVRLSX
ILC157-MOC186-130045-
/O.NEW.KLSX.SV.W.0235.260812T2343Z-260813T0045Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service St Louis MO
643 PM CDT Wed Aug 12 2026
The National Weather Service in St Louis has issued a
* Severe Thunderstorm Warning for...
Central Randolph County in southwestern Illinois...
Northeastern Sainte Genevieve County in southeastern Missouri...
* Until 745 PM CDT.
* At 643 PM CDT, a severe thunderstorm was located near Ste.
Genevieve, moving southeast at 15 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
* Locations impacted include...
Prairie Du Rocher, Ruma, Modoc, Kellogg, Evansville, Ste.
Genevieve, Roots, Walsh, Ellis Grove, New Palestine, Blair,
Kaskaskia, Chester, St. Mary and Bremen.
This includes the following State Parks...
Randolph County State Recreation Area and Felix Valle House State
Park.
This includes Interstate 55 in Missouri between exits 141 and 143.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Seek shelter inside a well-built structure and stay away from
windows. This storm is capable of producing damaging winds and large
hail.
&&
LAT...LON 3807 9016 3815 8999 3802 8966 3787 8991
3787 8994 3782 9000 3781 9001 3796 9012
3801 9007 3802 9010 3805 9014
TIME...MOT...LOC 2343Z 319DEG 14KT 3802 9002
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Carney
Action: Continued Issued At: 2026-08-12 19:13:30
087
WWUS53 KLSX 130012
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
712 PM CDT Wed Aug 12 2026
ILC157-MOC186-130045-
/O.CON.KLSX.SV.W.0235.000000T0000Z-260813T0045Z/
Randolph IL-Sainte Genevieve MO-
712 PM CDT Wed Aug 12 2026
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM CDT FOR
SOUTH CENTRAL RANDOLPH AND EAST CENTRAL SAINTE GENEVIEVE COUNTIES...
At 712 PM CDT, a severe thunderstorm was located near St. Mary, or 5
miles southeast of Ste. Genevieve, moving southeast at 35 mph.
HAZARD...60 mph wind gusts and small hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Kellogg, Ste. Genevieve, St. Mary, Kaskaskia and Chester.
This includes the following State Parks...
Felix Valle House State Park.
This includes Interstate 55 in Missouri between exits 141 and 143.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Seek shelter inside a well-built structure and stay away from
windows. This storm is capable of producing damaging winds.
&&
LAT...LON 3802 9006 3804 9004 3794 8981 3787 8991
3787 8994 3782 9000 3781 9001 3796 9012
TIME...MOT...LOC 2343Z 305DEG 28KT 3806 9023
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Carney
Action: Expired Issued At: 2026-08-12 19:41:30
899
WWUS53 KLSX 130041
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
741 PM CDT Wed Aug 12 2026
ILC157-MOC186-130051-
/O.EXP.KLSX.SV.W.0235.000000T0000Z-260813T0045Z/
Randolph IL-Sainte Genevieve MO-
741 PM CDT Wed Aug 12 2026
...SEVERE THUNDERSTORM WARNING WILL EXPIRE AT 745 PM CDT FOR SOUTH
CENTRAL RANDOLPH AND EAST CENTRAL SAINTE GENEVIEVE COUNTIES...
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire. However, gusty
winds and heavy rain are still possible with this thunderstorm.
&&
LAT...LON 3802 9006 3804 9004 3794 8981 3787 8991
3787 8994 3782 9000 3781 9001 3796 9012
TIME...MOT...LOC 0012Z 305DEG 28KT 3792 8998
$$
Carney
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