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Home Return to list Severe Thunderstorm Warning 0233 Issued by the St. Louis Forecast Office
Action: New Issued At: 2026-08-12 17:43:57
270
WUUS53 KLSX 122243
SVRLSX
MOC055-099-221-122345-
/O.NEW.KLSX.SV.W.0233.260812T2243Z-260812T2345Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service St Louis MO
543 PM CDT Wed Aug 12 2026
The National Weather Service in St Louis has issued a
* Severe Thunderstorm Warning for...
Northeastern Crawford County in east central Missouri...
Jefferson County in east central Missouri...
Northern Washington County in east central Missouri...
* Until 645 PM CDT.
* At 543 PM CDT, severe thunderstorms were located along a line from
5 miles south of Pacific to near Bourbon, moving southeast at 45
mph.
HAZARD...60 mph wind gusts and small hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Sullivan, Bourbon, Dittmer, Cedar Hill Lakes, Cedar Hill,
Richwoods, Byrnes Mill, House Springs, Anthonies Mill, Hillsboro,
De Soto, Antonia, Barnhart, Olympian Village, Horine, Pevely,
Herculaneum, Festus and Crystal City.
This includes the following State Parks...
Washington State Park, Mastodon Historic Site, Sandy Creek Covered
Bridge Historic Site and Gov. Dunklins Grave Historic Site.
This includes the following highways...
Interstate 44 in Missouri near exit 218. Interstate 55 in Missouri
between exits 170 and 187.
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 3820 9135 3820 9078 3848 9073 3846 9068
3845 9069 3846 9066 3839 9035 3832 9037
3822 9036 3816 9027 3812 9025 3809 9033
3804 9042 3800 9059 3801 9063 3802 9061
3807 9061 3808 9063 3803 9067 3806 9108
TIME...MOT...LOC 2243Z 309DEG 38KT 3841 9076 3830 9077 3824 9083 3821
9125
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Carney
Action: Continued Issued At: 2026-08-12 18:00:28
745
WWUS53 KLSX 122300
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
600 PM CDT Wed Aug 12 2026
MOC055-099-221-122345-
/O.CON.KLSX.SV.W.0233.000000T0000Z-260812T2345Z/
Crawford MO-Jefferson MO-Washington MO-
600 PM CDT Wed Aug 12 2026
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM CDT FOR
NORTHEASTERN CRAWFORD, JEFFERSON AND NORTHERN WASHINGTON COUNTIES IN
EAST CENTRAL MISSOURI...
At 600 PM CDT, severe thunderstorms were located along a line from
over Cedar Hill Lakes to near Anthonies Mill, or along a line from
near Cedar Hill to near Anthonies Mill, moving southeast at 35 mph.
HAZARD...60 mph wind gusts and small hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Sullivan, St. Cloud, Grubville, Bourbon, Oermann, Richwoods,
Dittmer, Cedar Hill, Cedar Hill Lakes, Fletcher, Morse Mill,
Anthonies Mill, De Soto, Hillsboro, Victoria, Hematite, Valles
Mill, Festus, Olympian Village and Crystal City.
This includes the following State Parks...
Washington State Park and Sandy Creek Covered Bridge Historic Site.
This includes the following highways...
Interstate 44 in Missouri near exit 218. Interstate 55 in Missouri
between exits 170 and 175.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Seek shelter inside a well-built structure and stay away from
windows. These storms are capable of producing damaging winds.
&&
LAT...LON 3820 9135 3820 9078 3840 9074 3820 9034
3816 9027 3812 9025 3809 9033 3804 9042
3800 9059 3801 9063 3802 9061 3807 9061
3808 9063 3803 9067 3806 9108
TIME...MOT...LOC 2243Z 316DEG 32KT 3841 9079 3830 9080 3824 9087 3821
9128
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Carney
Action: Continued Issued At: 2026-08-12 18:31:58
808
WWUS53 KLSX 122331
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
631 PM CDT Wed Aug 12 2026
MOC055-122341-
/O.CAN.KLSX.SV.W.0233.000000T0000Z-260812T2345Z/
Crawford MO-
631 PM CDT Wed Aug 12 2026
...SEVERE THUNDERSTORM WARNING IS CANCELLED FOR NORTHEASTERN CRAWFORD
COUNTY...
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning has been cancelled. However, gusty winds and
heavy rain are still possible with these thunderstorms.
&&
LAT...LON 3805 9088 3817 9074 3825 9048 3820 9034
3816 9028 3813 9025 3812 9025 3809 9033
3804 9042 3800 9058 3801 9063 3802 9061
3807 9061 3808 9063 3803 9067
TIME...MOT...LOC 2300Z 316DEG 32KT 3830 9067 3819 9067 3814 9074 3810
9116
$$
MOC099-221-122345-
/O.CON.KLSX.SV.W.0233.000000T0000Z-260812T2345Z/
Jefferson MO-Washington MO-
631 PM CDT Wed Aug 12 2026
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM CDT FOR
SOUTHERN JEFFERSON AND NORTHEASTERN WASHINGTON COUNTIES IN EAST
CENTRAL MISSOURI...
At 631 PM CDT, severe thunderstorms were located along a line from
over Olympian Village to 8 miles west of Potosi, or along a line from
8 miles east of De Soto to 8 miles west of Potosi, moving southeast
at 35 mph.
HAZARD...60 mph wind gusts and small hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Fletcher, De Soto, Hillsboro, Mapaville, Victoria, Hematite, Valles
Mill, Festus, Olympian Village and Crystal City.
This includes the following State Parks...
Washington State Park.
This includes Interstate 55 in Missouri between exits 170 and 175.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Seek shelter inside a well-built structure and stay away from
windows. These storms are capable of producing damaging winds.
&&
LAT...LON 3805 9088 3817 9074 3825 9048 3820 9034
3816 9028 3813 9025 3812 9025 3809 9033
3804 9042 3800 9058 3801 9063 3802 9061
3807 9061 3808 9063 3803 9067
TIME...MOT...LOC 2300Z 316DEG 32KT 3830 9067 3819 9067 3814 9074 3810
9116
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Carney
Action: Cancelled Issued At: 2026-08-12 18:31:58
808
WWUS53 KLSX 122331
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
631 PM CDT Wed Aug 12 2026
MOC055-122341-
/O.CAN.KLSX.SV.W.0233.000000T0000Z-260812T2345Z/
Crawford MO-
631 PM CDT Wed Aug 12 2026
...SEVERE THUNDERSTORM WARNING IS CANCELLED FOR NORTHEASTERN CRAWFORD
COUNTY...
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning has been cancelled. However, gusty winds and
heavy rain are still possible with these thunderstorms.
&&
LAT...LON 3805 9088 3817 9074 3825 9048 3820 9034
3816 9028 3813 9025 3812 9025 3809 9033
3804 9042 3800 9058 3801 9063 3802 9061
3807 9061 3808 9063 3803 9067
TIME...MOT...LOC 2300Z 316DEG 32KT 3830 9067 3819 9067 3814 9074 3810
9116
$$
MOC099-221-122345-
/O.CON.KLSX.SV.W.0233.000000T0000Z-260812T2345Z/
Jefferson MO-Washington MO-
631 PM CDT Wed Aug 12 2026
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM CDT FOR
SOUTHERN JEFFERSON AND NORTHEASTERN WASHINGTON COUNTIES IN EAST
CENTRAL MISSOURI...
At 631 PM CDT, severe thunderstorms were located along a line from
over Olympian Village to 8 miles west of Potosi, or along a line from
8 miles east of De Soto to 8 miles west of Potosi, moving southeast
at 35 mph.
HAZARD...60 mph wind gusts and small hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Fletcher, De Soto, Hillsboro, Mapaville, Victoria, Hematite, Valles
Mill, Festus, Olympian Village and Crystal City.
This includes the following State Parks...
Washington State Park.
This includes Interstate 55 in Missouri between exits 170 and 175.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Seek shelter inside a well-built structure and stay away from
windows. These storms are capable of producing damaging winds.
&&
LAT...LON 3805 9088 3817 9074 3825 9048 3820 9034
3816 9028 3813 9025 3812 9025 3809 9033
3804 9042 3800 9058 3801 9063 3802 9061
3807 9061 3808 9063 3803 9067
TIME...MOT...LOC 2300Z 316DEG 32KT 3830 9067 3819 9067 3814 9074 3810
9116
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Carney
Action: Expired Issued At: 2026-08-12 18:47:59
339
WWUS53 KLSX 122347
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
647 PM CDT Wed Aug 12 2026
MOC099-221-122357-
/O.EXP.KLSX.SV.W.0233.000000T0000Z-260812T2345Z/
Jefferson MO-Washington MO-
647 PM CDT Wed Aug 12 2026
...SEVERE THUNDERSTORM WARNING HAS EXPIRED FOR SOUTHERN JEFFERSON AND
NORTHEASTERN WASHINGTON COUNTIES IN EAST CENTRAL MISSOURI...
The storms which prompted the warning have moved out of the area.
Therefore, the warning has been allowed to expire. However, small
hail, gusty winds, and heavy rain are still possible with these
thunderstorms.
&&
LAT...LON 3805 9088 3817 9074 3825 9048 3820 9034
3816 9028 3813 9025 3812 9025 3809 9033
3804 9042 3800 9058 3801 9063 3802 9061
3807 9061 3808 9063 3803 9067
TIME...MOT...LOC 2331Z 316DEG 32KT 3810 9042 3799 9043 3794 9050 3790
9091
$$
Carney
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