|
Home Return to list Severe Thunderstorm Warning 0236 Issued by the Chicago Forecast Office
Action: New Issued At: 2026-08-11 08:45:42
791
WUUS53 KLOT 111345
SVRLOT
ILC103-141-201-111515-
/O.NEW.KLOT.SV.W.0236.260811T1345Z-260811T1515Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Chicago/Romeoville
845 AM CDT Tue Aug 11 2026
The National Weather Service in Chicago has issued a
* Severe Thunderstorm Warning for...
Lee County in north central Illinois...
Ogle County in north central Illinois...
Winnebago County in north central Illinois...
* Until 1015 AM CDT.
* At 844 AM CDT, severe thunderstorms were located along a line
extending from near Warren to Shannon to near Deer Grove, moving
east at 35 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...
Polo and Forreston around 850 AM CDT.
Dixon around 855 AM CDT.
Mount Morris around 900 AM CDT.
Lost Nation around 905 AM CDT.
Oregon and Amboy around 910 AM CDT.
Byron, Franklin Grove, and Woodhaven Lakes around 915 AM CDT.
Pecatonica, Stillman Valley, Ashton, and Sublette around 920 AM
CDT.
Winnebago around 925 AM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4250 8894 4163 8894 4163 8917 4158 8917
4158 8963 4193 8963 4193 8969 4220 8969
4220 8940 4250 8940
TIME...MOT...LOC 1344Z 273DEG 32KT 4248 9003 4215 8971 4155 8975
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH
$$
Izzi
Action: Continued Issued At: 2026-08-11 08:58:13
053
WWUS53 KLOT 111358
SVSLOT
Severe Weather Statement
National Weather Service Chicago/Romeoville
858 AM CDT Tue Aug 11 2026
ILC103-141-201-111515-
/O.CON.KLOT.SV.W.0236.000000T0000Z-260811T1515Z/
Lee IL-Ogle IL-Winnebago IL-
858 AM CDT Tue Aug 11 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 AM CDT
FOR LEE...OGLE AND WINNEBAGO COUNTIES...
At 857 AM CDT, severe thunderstorms were located along a line
extending from near Nora to Forreston to Walnut, moving east at 35
mph.
HAZARD...70 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect considerable tree damage. Damage is likely to mobile
homes, roofs, and outbuildings.
These severe storms will be near...
Dixon and Mount Morris around 905 AM CDT.
Other locations in the path of these severe thunderstorms include
Oregon, Amboy, Lost Nation, Byron, Franklin Grove, Woodhaven Lakes,
Pecatonica, Stillman Valley, Ashton, Sublette, Winnebago, Rockford,
Rochelle, Davis Junction, Lake Summerset, Rockford Airport, Durand,
Hillcrest and Paw Paw.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4250 8894 4163 8894 4163 8917 4158 8917
4158 8963 4193 8963 4193 8969 4220 8969
4220 8940 4250 8940
TIME...MOT...LOC 1357Z 273DEG 32KT 4247 8988 4214 8956 4154 8960
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH
$$
Birk
Action: Continued Issued At: 2026-08-11 09:16:43
754
WWUS53 KLOT 111416
SVSLOT
Severe Weather Statement
National Weather Service Chicago/Romeoville
916 AM CDT Tue Aug 11 2026
ILC103-141-201-111515-
/O.CON.KLOT.SV.W.0236.000000T0000Z-260811T1515Z/
Lee IL-Ogle IL-Winnebago IL-
916 AM CDT Tue Aug 11 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 AM CDT
FOR LEE...OGLE AND WINNEBAGO COUNTIES...
At 915 AM CDT, severe thunderstorms were located along a line
extending from 6 miles north of Cedarville to near Byron to near La
Moille, moving east at 45 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...
Byron, Winnebago, Pecatonica, Stillman Valley, Ashton, Sublette,
Woodhaven Lakes, Rockford, Rochelle, Rockford Airport, Davis
Junction, Lake Summerset, Durand, Hillcrest, Loves Park, Cherry
Valley, Paw Paw, Machesney Park, Roscoe, South Beloit, Rockton and
Beloit.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Prepare immediately for damaging winds and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.
&&
LAT...LON 4250 8894 4163 8894 4163 8917 4158 8917
4158 8963 4193 8963 4193 8969 4220 8969
4220 8940 4250 8940
TIME...MOT...LOC 1415Z 271DEG 39KT 4247 8962 4214 8930 4154 8935
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...OBSERVED
MAX WIND GUST...70 MPH
$$
Birk
Action: Continued Issued At: 2026-08-11 09:29:43
055
WWUS53 KLOT 111429
SVSLOT
Severe Weather Statement
National Weather Service Chicago/Romeoville
929 AM CDT Tue Aug 11 2026
ILC103-141-201-111515-
/O.CON.KLOT.SV.W.0236.000000T0000Z-260811T1515Z/
Lee IL-Ogle IL-Winnebago IL-
929 AM CDT Tue Aug 11 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 AM CDT
FOR LEE...OGLE AND WINNEBAGO COUNTIES...
At 928 AM CDT, severe thunderstorms were located along a line
extending from near Durand to Davis Junction to near Sublette,
moving east at 55 mph. This line of storms has a history of
producing wind damage.
HAZARD...70 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect considerable tree damage. Damage is likely to mobile
homes, roofs, and outbuildings.
Locations impacted include...
Rockford, Beloit, Loves Park, Machesney Park, Dixon, Roscoe,
Rochelle, South Beloit, Rockton, Byron, Oregon, Mount Morris, Amboy,
Polo, Rockford Airport, Cherry Valley, Winnebago, Davis Junction,
Pecatonica, Forreston, Durand, Hillcrest, Stillman Valley, Franklin
Grove, and Ashton.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.
Prepare immediately for damaging winds and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.
&&
LAT...LON 4250 8894 4163 8894 4163 8917 4158 8917
4158 8963 4193 8963 4193 8969 4220 8969
4220 8940 4250 8940
TIME...MOT...LOC 1428Z 279DEG 50KT 4245 8923 4211 8911 4170 8917
TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...OBSERVED
MAX WIND GUST...70 MPH
$$
Birk
Action: Continued Issued At: 2026-08-11 09:47:44
502
WWUS53 KLOT 111447
SVSLOT
Severe Weather Statement
National Weather Service Chicago/Romeoville
947 AM CDT Tue Aug 11 2026
ILC103-141-201-111515-
/O.CON.KLOT.SV.W.0236.000000T0000Z-260811T1515Z/
Lee IL-Ogle IL-Winnebago IL-
947 AM CDT Tue Aug 11 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 AM CDT
FOR LEE...EASTERN OGLE AND EASTERN WINNEBAGO COUNTIES...
At 947 AM CDT, severe thunderstorms were located along a line
extending from near Cherry Valley to near Kirkland to near 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.
Locations impacted include...
Rockford, Loves Park, Machesney Park, Dixon, Roscoe, Rochelle, South
Beloit, Rockton, Byron, Oregon, Amboy, Rockford Airport, Cherry
Valley, Winnebago, Davis Junction, Hillcrest, Stillman Valley,
Franklin Grove, Ashton, Paw Paw, Lost Nation, Sublette, Woodhaven
Lakes, New Milford, and Creston.
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 4163 8894 4163 8917 4158 8917 4158 8954
4181 8949 4195 8942 4205 8936 4218 8926
4249 8910 4249 8894
TIME...MOT...LOC 1447Z 287DEG 47KT 4227 8892 4202 8891 4168 8894
TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...OBSERVED
MAX WIND GUST...70 MPH
$$
Birk
Action: Expired Issued At: 2026-08-11 10:08:44
982
WWUS53 KLOT 111508
SVSLOT
Severe Weather Statement
National Weather Service Chicago/Romeoville
1008 AM CDT Tue Aug 11 2026
ILC103-141-201-111518-
/O.EXP.KLOT.SV.W.0236.000000T0000Z-260811T1515Z/
Lee IL-Ogle IL-Winnebago IL-
1008 AM CDT Tue Aug 11 2026
...THE SEVERE THUNDERSTORM WARNING FOR LEE...EASTERN OGLE AND EASTERN
WINNEBAGO COUNTIES WILL EXPIRE AT 1015 AM CDT...
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire.
A Severe Thunderstorm Watch remains in effect until 200 PM CDT for
north central Illinois.
&&
LAT...LON 4163 8894 4163 8917 4158 8917 4158 8954
4181 8949 4195 8942 4205 8936 4218 8926
4249 8910 4249 8894
TIME...MOT...LOC 1508Z 273DEG 32KT 4226 8869 4201 8868 4167 8871
$$
Birk
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||