|
Home Return to list Severe Thunderstorm Warning 0238 Issued by the Chicago Forecast Office
Action: New Issued At: 2026-08-11 09:23:13
822
WUUS53 KLOT 111422
SVRLOT
ILC007-037-099-111515-
/O.NEW.KLOT.SV.W.0238.260811T1422Z-260811T1515Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Chicago/Romeoville
922 AM CDT Tue Aug 11 2026
The National Weather Service in Chicago has issued a
* Severe Thunderstorm Warning for...
Northern La Salle County in north central Illinois...
De Kalb County in north central Illinois...
Boone County in north central Illinois...
* Until 1015 AM CDT.
* At 922 AM CDT, severe thunderstorms were located along a line
extending from near Winnebago to near Byron to near Sublette,
moving east at 55 mph.
HAZARD...70 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect considerable tree damage. Damage is likely to
mobile homes, roofs, and outbuildings.
* Severe thunderstorms will be near...
Mendota around 930 AM CDT.
Belvidere, Loves Park, Shabbona, Cherry Valley, and Earlville
around 935 AM CDT.
Poplar Grove, Candlewick Lake, Kirkland, Malta, Leland, and
Timberlane around 940 AM CDT.
DeKalb, Sycamore, Lake Holiday, Cortland, Somonauk, Waterman, and
Kingston around 945 AM CDT.
Sandwich, Genoa, Sheridan, and Hinckley around 950 AM CDT.
Maple Park around 955 AM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4249 8871 4215 8871 4215 8859 4143 8860
4147 8917 4163 8917 4163 8894 4249 8894
TIME...MOT...LOC 1422Z 275DEG 49KT 4232 8926 4208 8924 4160 8921
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH
$$
Izzi
Action: Continued Issued At: 2026-08-11 09:32:43
110
WWUS53 KLOT 111432
SVSLOT
Severe Weather Statement
National Weather Service Chicago/Romeoville
932 AM CDT Tue Aug 11 2026
ILC007-037-099-111515-
/O.CON.KLOT.SV.W.0238.000000T0000Z-260811T1515Z/
La Salle IL-De Kalb IL-Boone IL-
932 AM CDT Tue Aug 11 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 AM CDT
FOR NORTHERN LA SALLE...DE KALB AND BOONE COUNTIES...
At 931 AM CDT, severe thunderstorms were located along a line
extending from 6 miles southwest of Rockton to Davis Junction to 6
miles west of Paw Paw, moving east at 55 mph. This line of storms
has a history of producing wind damage.
HAZARD...70 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect considerable tree damage. Damage is likely to mobile
homes, roofs, and outbuildings.
These severe storms will be near...
Cherry Valley around 935 AM CDT.
Belvidere, Loves Park, Shabbona, Candlewick Lake, Kirkland, Malta,
and Timberlane around 940 AM CDT.
Other locations in the path of these severe thunderstorms include
DeKalb, Sycamore, Poplar Grove, Genoa, Waterman, Kingston, Leland,
Sandwich, Lake Holiday, Cortland, Hinckley, Somonauk, Capron and
Maple Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.
Prepare immediately for damaging winds and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.
&&
LAT...LON 4249 8871 4215 8871 4215 8859 4143 8860
4147 8917 4163 8917 4163 8894 4249 8894
TIME...MOT...LOC 1431Z 279DEG 50KT 4240 8917 4211 8908 4170 8911
TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...OBSERVED
MAX WIND GUST...70 MPH
$$
Birk
Action: Continued Issued At: 2026-08-11 09:49:14
510
WWUS53 KLOT 111448
SVSLOT
Severe Weather Statement
National Weather Service Chicago/Romeoville
948 AM CDT Tue Aug 11 2026
ILC007-037-099-111515-
/O.CON.KLOT.SV.W.0238.000000T0000Z-260811T1515Z/
La Salle IL-De Kalb IL-Boone IL-
948 AM CDT Tue Aug 11 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 AM CDT
FOR NORTHERN LA SALLE...DE KALB AND BOONE COUNTIES...
At 948 AM CDT, severe thunderstorms were located along a line
extending from near Cherry Valley to near Malta to near Paw Paw,
moving southeast at 55 mph. This line of storms has a history of
producing wind damage.
HAZARD...70 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect considerable tree damage. Damage is likely to mobile
homes, roofs, and outbuildings.
Locations impacted include...
DeKalb, Sycamore, Genoa, Lake Holiday, Cortland, Somonauk,
Waterman, Kingston, Leland, Sandwich, Sheridan, Hinckley and Maple
Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.
Prepare immediately for damaging winds and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.
&&
LAT...LON 4249 8871 4215 8871 4215 8859 4143 8860
4147 8917 4163 8917 4163 8894 4249 8894
TIME...MOT...LOC 1448Z 294DEG 49KT 4220 8890 4197 8890 4167 8892
TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...OBSERVED
MAX WIND GUST...70 MPH
$$
Birk
Action: Continued Issued At: 2026-08-11 10:04:44
901
WWUS53 KLOT 111504
SVSLOT
Severe Weather Statement
National Weather Service Chicago/Romeoville
1004 AM CDT Tue Aug 11 2026
ILC007-037-099-111515-
/O.CON.KLOT.SV.W.0238.000000T0000Z-260811T1515Z/
La Salle IL-De Kalb IL-Boone IL-
1004 AM CDT Tue Aug 11 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 AM CDT
FOR NORTHERN LA SALLE...DE KALB AND BOONE COUNTIES...
At 1003 AM CDT, severe thunderstorms were located along a line
extending from near Hampshire to near Maple Park to Sandwich, moving
southeast at 55 mph. This line of storms has a history of producing
wind damage.
HAZARD...70 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect considerable tree damage. Damage is likely to mobile
homes, roofs, and outbuildings.
Locations impacted include...
DeKalb, Belvidere, Loves Park, Sycamore, Sandwich, Mendota, Poplar
Grove, Genoa, Sheridan, Shabbona, Candlewick Lake, Lake Holiday,
Cortland, Cherry Valley, Hinckley, Somonauk, Kirkland, Earlville,
Waterman, Capron, Maple Park, Kingston, Malta, Serena, and Leland.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.
Prepare immediately for damaging winds and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.
&&
LAT...LON 4249 8871 4215 8871 4215 8859 4143 8860
4147 8917 4163 8917 4163 8894 4249 8894
TIME...MOT...LOC 1503Z 293DEG 47KT 4209 8860 4186 8860 4164 8862
TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...OBSERVED
MAX WIND GUST...70 MPH
$$
Birk
Action: Expired Issued At: 2026-08-11 10:16:44
333
WWUS53 KLOT 111516
SVSLOT
Severe Weather Statement
National Weather Service Chicago/Romeoville
1016 AM CDT Tue Aug 11 2026
ILC007-037-099-111526-
/O.EXP.KLOT.SV.W.0238.000000T0000Z-260811T1515Z/
La Salle IL-De Kalb IL-Boone IL-
1016 AM CDT Tue Aug 11 2026
...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN LA SALLE...DE KALB
AND BOONE COUNTIES HAS EXPIRED...
The storms which prompted the warning have moved out of the area.
Therefore, the warning has been allowed to expire.
A Severe Thunderstorm Watch remains in effect until 200 PM CDT for
north central and northeastern Illinois.
&&
LAT...LON 4249 8871 4215 8871 4215 8859 4143 8860
4147 8917 4163 8917 4163 8894 4249 8894
TIME...MOT...LOC 1516Z 275DEG 49KT 4209 8854 4164 8856
$$
Birk
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||