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Severe Thunderstorm Warning 0229
Issued by the Chicago Forecast Office

Action Issued Starts Expiration
New 2026-08-09 23:22:39 2026-08-09 23:22:00 2026-08-10 00:00:00
Continued 2026-08-09 23:37:09 2026-08-10 00:00:00
Expired 2026-08-09 23:51:40 2026-08-10 00:00:00

Action: New
Issued At: 2026-08-09 23:22:39 

933 
WUUS53 KLOT 100422
SVRLOT
ILC031-097-100500-
/O.NEW.KLOT.SV.W.0229.260810T0422Z-260810T0500Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Chicago/Romeoville
1122 PM CDT Sun Aug 9 2026

The National Weather Service in Chicago has issued a

* Severe Thunderstorm Warning for...
  South central Lake County in northeastern Illinois...
  Northwestern Cook County in northeastern Illinois...

* Until midnight CDT.

* At 1121 PM CDT, a severe thunderstorm was located over Inverness,
  or near Barrington, moving east at 15 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Arlington Heights, Schaumburg, Palatine, Des Plaines, Mount
  Prospect, Hoffman Estates, Glenview, Buffalo Grove, Streamwood,
  Wheeling, Park Ridge, Elk Grove Village, Mundelein, Niles, Vernon
  Hills, Lake Zurich, Barrington, Rolling Meadows, Prospect Heights,
  Long Grove, Hawthorn Woods, Inverness, Lincolnshire, Barrington
  Hills, and Kildeer.

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.

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4202 8815 4213 8820 4225 8799 4203 8782
TIME...MOT...LOC 0421Z 251DEG 15KT 4211 8811 

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Kluber
Action: Continued
Issued At: 2026-08-09 23:37:09 

243 
WWUS53 KLOT 100436
SVSLOT

Severe Weather Statement
National Weather Service Chicago/Romeoville
1136 PM CDT Sun Aug 9 2026

ILC031-097-100500-
/O.CON.KLOT.SV.W.0229.000000T0000Z-260810T0500Z/
Lake IL-Cook IL-
1136 PM CDT Sun Aug 9 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CDT
FOR SOUTH CENTRAL LAKE AND NORTH CENTRAL COOK COUNTIES...

At 1136 PM CDT, a severe thunderstorm was located over Palatine,
moving east at 20 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Arlington Heights, Palatine, Des Plaines, Mount Prospect, Glenview,
Buffalo Grove, Wheeling, Park Ridge, Elk Grove Village, Mundelein,
Niles, Vernon Hills, Lake Zurich, Barrington, Rolling Meadows,
Prospect Heights, Long Grove, Hawthorn Woods, Inverness,
Lincolnshire, Kildeer, Forest Lake, Deer Park, and Indian Creek.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A tornado watch remains in effect for the warned area. Tornadoes can
develop quickly from severe thunderstorms. Although a tornado is not
immediately likely, if one is spotted act quickly and move to a place
of safety inside a sturdy structure, such as a basement or small
interior room.

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4203 8798 4216 8815 4225 8799 4203 8782
TIME...MOT...LOC 0436Z 261DEG 15KT 4213 8803 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Kluber
Action: Expired
Issued At: 2026-08-09 23:51:40 

608 
WWUS53 KLOT 100451 RRA
SVSLOT

Severe Weather Statement
National Weather Service Chicago/Romeoville
1151 PM CDT Sun Aug 9 2026

ILC031-097-100501-
/O.EXP.KLOT.SV.W.0229.000000T0000Z-260810T0500Z/
Lake IL-Cook IL-
1151 PM CDT Sun Aug 9 2026

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL LAKE AND NORTH
CENTRAL COOK COUNTIES WILL EXPIRE AT MIDNIGHT CDT...

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 will be allowed to expire.  However, small
hail and heavy rain are still possible with this thunderstorm.

A Severe Thunderstorm Watch remains in effect until 400 AM CDT for
northeastern Illinois.

&&

LAT...LON 4203 8798 4216 8815 4225 8799 4203 8782
TIME...MOT...LOC 0450Z 251DEG 15KT 4215 8795 

$$

Kluber

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