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Home Return to list Severe Thunderstorm Warning 0151 Issued by the St. Louis Forecast Office
Action: New Issued At: 2026-05-18 07:37:39
521
WUUS53 KLSX 181237
SVRLSX
ILC013-061-149-181315-
/O.NEW.KLSX.SV.W.0151.260518T1237Z-260518T1315Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service St Louis MO
737 AM CDT Mon May 18 2026
The National Weather Service in St Louis has issued a
* Severe Thunderstorm Warning for...
North Central Calhoun County in southwestern Illinois...
Central Greene County in southwestern Illinois...
Southeastern Pike County in west central Illinois...
* Until 815 AM CDT.
* At 737 AM CDT, a severe thunderstorm was located 6 miles east of
Belleview, or 15 miles west of White Hall, moving northeast 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...
Belleview, Mozier, Nebo, Beecreek, Pearl, Haypress, Bedford,
Hillview, Walkersville, Montezuma, Carrollton, Patterson, Belltown,
Berdan, White Hall, Barrow and Roodhouse.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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.
&&
LAT...LON 3940 9081 3945 9083 3956 9058 3954 9057
3953 9058 3952 9058 3952 9032 3923 9029
3923 9031 3922 9031 3918 9046 3938 9047
3929 9076
TIME...MOT...LOC 1236Z 244DEG 32KT 3938 9068
TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Pfahler
Action: Cancelled Issued At: 2026-05-18 07:53:09
859
WWUS53 KLSX 181252 RRA
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
752 AM CDT Mon May 18 2026
ILC013-149-181302-
/O.CAN.KLSX.SV.W.0151.000000T0000Z-260518T1315Z/
Calhoun IL-Pike IL-
752 AM CDT Mon May 18 2026
...SEVERE THUNDERSTORM WARNING IS CANCELLED FOR NORTH CENTRAL CALHOUN
COUNTY IN SOUTHWESTERN ILLINOIS AND SOUTHEASTERN PIKE COUNTY IN WEST
CENTRAL ILLINOIS...
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.
&&
LAT...LON 3952 9058 3952 9032 3923 9029 3923 9031
3922 9031 3918 9046 3938 9047 3933 9062
3938 9062 3940 9061 3943 9062 3944 9061
3946 9061 3948 9059 3951 9058
TIME...MOT...LOC 1237Z 244DEG 32KT 3938 9067
$$
ILC061-181315-
/O.CON.KLSX.SV.W.0151.000000T0000Z-260518T1315Z/
Greene IL-
752 AM CDT Mon May 18 2026
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 AM CDT FOR
CENTRAL GREENE COUNTY...
At 752 AM CDT, a severe thunderstorm was located 6 miles west of
White Hall, moving northeast 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...
Haypress, Hillview, Walkersville, Carrollton, Patterson, Belltown,
Berdan, White Hall, Barrow and Roodhouse.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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.
&&
LAT...LON 3952 9058 3952 9032 3923 9029 3923 9031
3922 9031 3918 9046 3938 9047 3933 9062
3938 9062 3940 9061 3943 9062 3944 9061
3946 9061 3948 9059 3951 9058
TIME...MOT...LOC 1237Z 244DEG 32KT 3938 9067
TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Pfahler
Action: Continued Issued At: 2026-05-18 07:53:09
859
WWUS53 KLSX 181252 RRA
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
752 AM CDT Mon May 18 2026
ILC013-149-181302-
/O.CAN.KLSX.SV.W.0151.000000T0000Z-260518T1315Z/
Calhoun IL-Pike IL-
752 AM CDT Mon May 18 2026
...SEVERE THUNDERSTORM WARNING IS CANCELLED FOR NORTH CENTRAL CALHOUN
COUNTY IN SOUTHWESTERN ILLINOIS AND SOUTHEASTERN PIKE COUNTY IN WEST
CENTRAL ILLINOIS...
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.
&&
LAT...LON 3952 9058 3952 9032 3923 9029 3923 9031
3922 9031 3918 9046 3938 9047 3933 9062
3938 9062 3940 9061 3943 9062 3944 9061
3946 9061 3948 9059 3951 9058
TIME...MOT...LOC 1237Z 244DEG 32KT 3938 9067
$$
ILC061-181315-
/O.CON.KLSX.SV.W.0151.000000T0000Z-260518T1315Z/
Greene IL-
752 AM CDT Mon May 18 2026
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 AM CDT FOR
CENTRAL GREENE COUNTY...
At 752 AM CDT, a severe thunderstorm was located 6 miles west of
White Hall, moving northeast 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...
Haypress, Hillview, Walkersville, Carrollton, Patterson, Belltown,
Berdan, White Hall, Barrow and Roodhouse.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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.
&&
LAT...LON 3952 9058 3952 9032 3923 9029 3923 9031
3922 9031 3918 9046 3938 9047 3933 9062
3938 9062 3940 9061 3943 9062 3944 9061
3946 9061 3948 9059 3951 9058
TIME...MOT...LOC 1237Z 244DEG 32KT 3938 9067
TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Pfahler
Action: Cancelled Issued At: 2026-05-18 08:02:40
148
WWUS53 KLSX 181302
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
802 AM CDT Mon May 18 2026
ILC061-181312-
/O.CAN.KLSX.SV.W.0151.000000T0000Z-260518T1315Z/
Greene IL-
802 AM CDT Mon May 18 2026
...SEVERE THUNDERSTORM WARNING IS CANCELLED FOR CENTRAL GREENE
COUNTY...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled.
&&
LAT...LON 3952 9058 3952 9032 3923 9029 3923 9031
3922 9031 3918 9046 3938 9047 3933 9062
3938 9062 3940 9061 3943 9062 3944 9061
3946 9061 3948 9059 3951 9058
TIME...MOT...LOC 1252Z 244DEG 32KT 3944 9051
$$
Pfahler
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