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Home Return to list Severe Thunderstorm Warning 0249 Issued by the Chicago Forecast Office
Action: New Issued At: 2026-08-12 07:53:42
385
WUUS53 KLOT 121253
SVRLOT
ILC103-141-121415-
/O.NEW.KLOT.SV.W.0249.260812T1253Z-260812T1415Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Chicago/Romeoville
753 AM CDT Wed Aug 12 2026
The National Weather Service in Chicago has issued a
* Severe Thunderstorm Warning for...
Lee County in north central Illinois...
Southwestern Ogle County in north central Illinois...
* Until 915 AM CDT.
* At 752 AM CDT, a line of severe thunderstorms were located from
near Union Grove to Prophetstown to Yorktown, moving east at 40
mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Dixon, Oregon, Amboy, Franklin Grove, Ashton, Lost Nation,
Sublette, Woodhaven Lakes, Grand Detour, Nelson, Harmon, Woodland
Shores, Eldena, Woosung, Lee Center, Chana, and Nachusa.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4192 8963 4205 8916 4159 8917 4158 8944
4158 8963
TIME...MOT...LOC 1252Z 267DEG 36KT 4200 9009 4190 9002 4177 8998 4172
8998 4169 8988 4161 8982 4153 8973 4145 8971 4137 8977 4127 8987
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Borchardt
Action: Continued Issued At: 2026-08-12 08:10:12
751
WWUS53 KLOT 121309
SVSLOT
Severe Weather Statement
National Weather Service Chicago/Romeoville
809 AM CDT Wed Aug 12 2026
ILC103-141-121415-
/O.CON.KLOT.SV.W.0249.000000T0000Z-260812T1415Z/
Lee IL-Ogle IL-
809 AM CDT Wed Aug 12 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 AM CDT
FOR LEE AND SOUTHWESTERN OGLE COUNTIES...
At 809 AM CDT, severe thunderstorms were located along a line
extending from near Chadwick to near Princeton, moving east at 35
mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
These severe storms will be near...
Dixon around 825 AM CDT.
Amboy and Woodhaven Lakes around 830 AM CDT.
Franklin Grove, Lost Nation, and Sublette around 840 AM CDT.
Oregon and Ashton around 850 AM CDT.
Other locations impacted by these severe thunderstorms include
Nelson, Eldena, Woosung, Grand Detour, Lee Center, Harmon, Nachusa,
Woodland Shores, and Chana.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4192 8963 4205 8916 4159 8917 4158 8944
4158 8963
TIME...MOT...LOC 1309Z 261DEG 30KT 4198 8986 4141 8950
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Izzi
Action: Continued Issued At: 2026-08-12 08:19:12
094
WWUS53 KLOT 121318
SVSLOT
Severe Weather Statement
National Weather Service Chicago/Romeoville
818 AM CDT Wed Aug 12 2026
ILC103-141-121415-
/O.CON.KLOT.SV.W.0249.000000T0000Z-260812T1415Z/
Lee IL-Ogle IL-
818 AM CDT Wed Aug 12 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 AM CDT
FOR LEE AND SOUTHWESTERN OGLE COUNTIES...
At 818 AM CDT, severe thunderstorms were located along a line
extending from near Milledgeville to near Princeton, moving east at
35 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
These severe storms will be near...
Dixon around 825 AM CDT.
Amboy and Woodhaven Lakes around 830 AM CDT.
Lost Nation and Sublette around 835 AM CDT.
Franklin Grove around 840 AM CDT.
Oregon and Ashton around 845 AM CDT.
Other locations impacted by these severe thunderstorms include
Nelson, Eldena, Woosung, Grand Detour, Lee Center, Harmon, Nachusa,
Woodland Shores, and Chana.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4192 8963 4205 8916 4159 8917 4158 8944
4158 8963
TIME...MOT...LOC 1318Z 261DEG 31KT 4199 8972 4142 8941
TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Izzi
Action: Continued Issued At: 2026-08-12 08:35:13
409
WWUS53 KLOT 121334
SVSLOT
Severe Weather Statement
National Weather Service Chicago/Romeoville
834 AM CDT Wed Aug 12 2026
ILC103-141-121415-
/O.CON.KLOT.SV.W.0249.000000T0000Z-260812T1415Z/
Lee IL-Ogle IL-
834 AM CDT Wed Aug 12 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 AM CDT
FOR LEE AND SOUTHWESTERN OGLE COUNTIES...
At 834 AM CDT, severe thunderstorms were located along a line
extending from near Polo to near Ladd, moving east at 40 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
These severe storms will be near...
Amboy, Franklin Grove, Lost Nation, Sublette, and Woodhaven Lakes
around 840 AM CDT.
Oregon and Ashton around 845 AM CDT.
Other locations impacted by these severe thunderstorms include
Nelson, Eldena, Woosung, Grand Detour, Lee Center, Harmon, Nachusa,
Woodland Shores, and Chana.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4192 8963 4205 8916 4159 8917 4158 8944
4158 8963
TIME...MOT...LOC 1334Z 267DEG 36KT 4200 8953 4143 8922
TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Izzi
Action: Continued Issued At: 2026-08-12 08:45:13
678
WWUS53 KLOT 121344
SVSLOT
Severe Weather Statement
National Weather Service Chicago/Romeoville
844 AM CDT Wed Aug 12 2026
ILC103-141-121415-
/O.CON.KLOT.SV.W.0249.000000T0000Z-260812T1415Z/
Lee IL-Ogle IL-
844 AM CDT Wed Aug 12 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 AM CDT
FOR CENTRAL LEE AND SOUTHWESTERN OGLE COUNTIES...
At 844 AM CDT, line of severe thunderstorms extended from Lost
Nation to Ashton to Sublette and is moving east at 45 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
These severe storms will be near...
Oregon and Ashton around 850 AM CDT.
Other locations impacted by these severe thunderstorms include
Woosung, Grand Detour, Lee Center, Nachusa, Eldena, and Chana.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4192 8963 4205 8916 4159 8917 4158 8944
4167 8944 4177 8949
TIME...MOT...LOC 1344Z 261DEG 38KT 4197 8943 4187 8927 4172 8917 4157
8910 4143 8906
TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Borchardt
Action: Cancelled Issued At: 2026-08-12 08:59:59
100
WWUS53 KLOT 121359 RRA
SVSLOT
Severe Weather Statement
National Weather Service Chicago/Romeoville
859 AM CDT Wed Aug 12 2026
ILC103-141-121409-
/O.CAN.KLOT.SV.W.0249.000000T0000Z-260812T1415Z/
Lee IL-Ogle IL-
859 AM CDT Wed Aug 12 2026
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL LEE AND SOUTHWESTERN
OGLE COUNTIES IS CANCELLED...
The storms which prompted the warning have moved out of the area.
Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 100 PM CDT for
north central Illinois.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Chicago.
&&
LAT...LON 4192 8963 4205 8916 4159 8917 4158 8944
4167 8944 4177 8949
TIME...MOT...LOC 1358Z 267DEG 36KT 4198 8924 4188 8908 4173 8898 4158
8891 4144 8887
$$
Borchardt
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