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Home Return to list Severe Thunderstorm Warning 0234 Issued by the St. Louis Forecast Office
Action: New Issued At: 2026-08-12 18:10:43
038
WUUS53 KLSX 122310
SVRLSX
MOC186-187-221-130015-
/O.NEW.KLSX.SV.W.0234.260812T2310Z-260813T0015Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service St Louis MO
610 PM CDT Wed Aug 12 2026
The National Weather Service in St Louis has issued a
* Severe Thunderstorm Warning for...
Washington County in east central Missouri...
Western Sainte Genevieve County in southeastern Missouri...
Saint Francois County in southeastern Missouri...
* Until 715 PM CDT.
* At 610 PM CDT, severe thunderstorms were located along a line from
over Hillsboro to over Anthonies Mill, 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...
Old Mines, Mineral Point, Potosi, Bonne Terre, Leadwood, Park
Hills, Desloge, Frankclay, Courtois, Irondale, Leadington,
Bloomsdale, Farmington, Bismarck, Caledonia, Rocky Ridge, Iron
Mountain Lake, Iron Mountain, Weingarten and Knob Lick.
This includes the following State Parks...
St. Joe State Park, St. Francois State Park and Missouri Mines
Historic Site.
This includes Interstate 55 in Missouri between exits 154 and 162.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Seek shelter inside a well-built structure and stay away from
windows. These storms are capable of producing damaging winds.
&&
LAT...LON 3807 9109 3803 9067 3808 9064 3808 9063
3807 9061 3802 9061 3801 9063 3800 9058
3804 9042 3812 9025 3801 9007 3764 9041
3765 9065 3773 9065 3774 9110
TIME...MOT...LOC 2310Z 327DEG 29KT 3822 9060 3805 9070 3808 9107
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Carney
Action: Continued Issued At: 2026-08-12 18:35:58
890
WWUS53 KLSX 122335
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
635 PM CDT Wed Aug 12 2026
MOC186-187-221-130015-
/O.CON.KLSX.SV.W.0234.000000T0000Z-260813T0015Z/
Sainte Genevieve MO-Saint Francois MO-Washington MO-
635 PM CDT Wed Aug 12 2026
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM CDT FOR
SOUTHEASTERN WASHINGTON COUNTY IN EAST CENTRAL MISSOURI AND WESTERN
SAINTE GENEVIEVE AND SAINT FRANCOIS COUNTIES IN SOUTHEASTERN
MISSOURI...
At 635 PM CDT, severe thunderstorms were located along a line from
near Olympian Village to 11 miles northeast of Courtois, or along a
line from 7 miles southeast of De Soto to 11 miles west of Potosi,
moving southeast at 35 mph.
HAZARD...60 mph wind gusts and small hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Old Mines, Mineral Point, Potosi, Bonne Terre, Leadwood, Frankclay,
Irondale, Desloge, Park Hills, Leadington, Bismarck, Farmington,
Caledonia, Doe Run, Bloomsdale, Iron Mountain Lake, Iron Mountain,
Rocky Ridge, Knob Lick and Weingarten.
This includes the following State Parks...
St. Joe State Park, St. Francois State Park and Missouri Mines
Historic Site.
This includes Interstate 55 in Missouri between exits 154 and 162.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Seek shelter inside a well-built structure and stay away from
windows. These storms are capable of producing damaging winds.
&&
LAT...LON 3787 9093 3805 9095 3803 9067 3808 9064
3808 9063 3807 9061 3802 9061 3801 9063
3800 9058 3804 9042 3809 9029 3812 9025
3801 9007 3764 9041 3765 9065 3773 9065
3774 9076
TIME...MOT...LOC 2310Z 327DEG 30KT 3827 9059 3811 9063 3802 9078 3809
9112
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Carney
Action: Continued Issued At: 2026-08-12 18:53:29
419
WWUS53 KLSX 122353
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
653 PM CDT Wed Aug 12 2026
MOC186-187-221-130015-
/O.CON.KLSX.SV.W.0234.000000T0000Z-260813T0015Z/
Sainte Genevieve MO-Saint Francois MO-Washington MO-
653 PM CDT Wed Aug 12 2026
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM CDT FOR
SOUTHEASTERN WASHINGTON COUNTY IN EAST CENTRAL MISSOURI AND WESTERN
SAINTE GENEVIEVE AND SAINT FRANCOIS COUNTIES IN SOUTHEASTERN
MISSOURI...
At 653 PM CDT, severe thunderstorms were located along a line from 5
miles northwest of Ste. Genevieve to over Irondale, or along a line
from 5 miles northwest of Ste. Genevieve to 7 miles west of Leadwood,
moving southeast 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...
Potosi, Mineral Point, Bonne Terre, Leadwood, Desloge, Park Hills,
Frankclay, French Village, Leadington, Irondale, Farmington,
Bloomsdale, Rocky Ridge, Weingarten, Bismarck, Iron Mountain, Iron
Mountain Lake, Doe Run and Knob Lick.
This includes the following State Parks...
St. Joe State Park, St. Francois State Park and Missouri Mines
Historic Site.
This includes Interstate 55 in Missouri between exits 154 and 162.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Seek shelter inside a well-built structure and stay away from
windows. These storms are capable of producing damaging winds.
&&
LAT...LON 3802 9080 3796 9062 3801 9047 3804 9042
3809 9029 3812 9025 3803 9011 3801 9007
3764 9041 3765 9065 3773 9065 3787 9083
TIME...MOT...LOC 2335Z 296DEG 36KT 3811 9032 3797 9042 3786 9056 3787
9073 3792 9091
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Carney
Action: Expired Issued At: 2026-08-12 19:17:00
248
WWUS53 KLSX 130016
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
716 PM CDT Wed Aug 12 2026
MOC186-187-221-130026-
/O.EXP.KLSX.SV.W.0234.000000T0000Z-260813T0015Z/
Sainte Genevieve MO-Saint Francois MO-Washington MO-
716 PM CDT Wed Aug 12 2026
...SEVERE THUNDERSTORM WARNING HAS EXPIRED FOR SOUTHEASTERN
WASHINGTON COUNTY IN EAST CENTRAL MISSOURI AND WESTERN SAINTE
GENEVIEVE AND SAINT FRANCOIS COUNTIES IN SOUTHEASTERN MISSOURI...
The storms which prompted the warning have moved out of the area.
Therefore, the warning has been allowed to expire. However, gusty
winds and heavy rain are still possible with these thunderstorms.
&&
LAT...LON 3802 9080 3796 9062 3801 9047 3804 9042
3809 9029 3812 9025 3803 9011 3801 9007
3764 9041 3765 9065 3773 9065 3787 9083
TIME...MOT...LOC 2353Z 296DEG 36KT 3803 9012 3790 9022 3779 9036 3779
9053 3784 9071
$$
Carney
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