Alert archive / Illinois / Tornado Warnings in 2026

Tornado Warning 43, NWS Chicago, IL

June 11, 2026Cook County, DuPage County, Illinois

NWS Chicago, IL issued this tornado warning at Jun 11, 2026, 7:54 PM CDT for Cook County, DuPage County, Illinois. It was in force for 16 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 11, 2026, 7:54 PM CDT (00:54 UTC)
Expired: Jun 11, 2026, 8:10 PM CDT
In force: 16 min
Issued by: NWS Chicago, IL
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Cook County, IL, DuPage County, IL

The radar

The Chicago radar (KLOT), 35 km from the middle of the area, began a volume at 00:52 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 11, 1:57 PM CDT	Tornado Watch	SPC	7 hr

What forecasters said that day

The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Chicago, IL wrote its last area forecast discussion before this tornado warning went out at Jun 11, 6:34 PM CDT, 1 hour 20 minutes earlier.

Area forecast discussion, Jun 11, 6:34 PM CDT, 1 hour 20 minutes before

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Hazardous weather outlook, Jun 11, 3:11 PM CDT, 4 hours 43 minutes before

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
311 PM CDT Thu Jun 11 2026

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-122015-
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
311 PM CDT Thu Jun 11 2026 /411 PM EDT Thu Jun 11 2026/

This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.

.DAY ONE...Tonight.

Weather hazards expected...

  Elevated Thunderstorm Risk...with an associated:
     Level 4 of 5 Damaging Wind Risk...up to 80 mph.
     Level 3 of 5 Tornado Risk.
     Level 2 of 5 Isolated Large Hail Risk...up to 2 inches in diameter.
  Elevated Flooding Risk.
  Elevated Non Thunderstorm Wind Risk.

DISCUSSION...

Severe thunderstorms will continue to develop in advance of an
approaching cold front this afternoon. These storms are expected
to move across the area through 10 PM this evening, and will be
capable of producing tornadoes and destructive winds, some
possibly significant. Instances of flash flooding may also occur
where thunderstorms repeatedly hit the same area.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Saturday...
  Limited Thunderstorm Risk...with an associated:
     Level 1 of 5 Severe Thunderstorm Risk.
  Limited Flooding Risk.
Tuesday and Wednesday...
  Limited Thunderstorm Risk.

.SPOTTER INFORMATION STATEMENT...

  Spotters will be needed through this evening.

GENERAL STORM MOTION OF THE DAY:

  Moving toward the east at around 45 mph.

LMZ740>745-122015-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
311 PM CDT Thu Jun 11 2026

This Hazardous Weather Outlook is for portions of the Illinois
nearshore waters of Lake Michigan and the Indiana nearshore
waters of Lake Michigan.

.DAY ONE...Tonight.

Weather hazards expected...

  Hazardous conditions for small craft.
  Significant Thunderstorm Risk...with an associated:
     Thunderstorm Waterspout Risk
     Level 4 of 5 Thunderstorm Wind Gust Risk...up to 65 knots.
     Level 2 of 5 Hail Risk...up to 1 inch in diameter.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Saturday...
  Limited Thunderstorm Risk...with an associated:
     Level 1 of 5 Severe Thunderstorm Risk.
Tuesday and Wednesday...
  Limited Thunderstorm Risk.

KJB

Visit us at www.weather.gov/chicago

In the hours before

Local storm report, Jun 11, 7:32 PM CDT, 22 minutes before

Preliminary Local Storm Report
National Weather Service Chicago IL
732 PM CDT Thu Jun 11 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0729 PM     Funnel Cloud     3 W Cedar Lake          41.36N 87.51W
06/11/2026                   Lake               IN   Trained Spotter

            Trained spotter reports rotating wall cloud
            with funnel cloud just west of Cedar Lake.

&&

WSL

Local storm report, Jun 11, 7:39 PM CDT, 15 minutes before

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Local storm report, Jun 11, 7:41 PM CDT, 13 minutes before

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Local storm report, Jun 11, 7:42 PM CDT, 12 minutes before

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Local storm report, Jun 11, 7:48 PM CDT, 6 minutes before

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Local storm report, Jun 11, 7:50 PM CDT, 4 minutes before

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The office that day

Everything else NWS Chicago, IL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 11, 7:03 PM CDT	Areal Flood Advisory	LOT	DeKalb, Ogle	2 hr
Jun 11, 7:11 PM CDT	Severe Thunderstorm Warning	LOT	Ford, Iroquois, Livingston	64 min
Jun 11, 7:14 PM CDT	Severe Thunderstorm Warning	LOT	Kane	26 min
Jun 11, 7:20 PM CDT	Tornado Warning	LOT	Will	40 min
Jun 11, 7:24 PM CDT	Tornado Warning	LOT	Ford, Iroquois	40 min
Jun 11, 7:37 PM CDT	Areal Flood Advisory	LOT	Will	3 hr
Jun 11, 7:40 PM CDT	Tornado Warning	LOT	Ford	65 min
Jun 11, 7:53 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LOT	Cook, DuPage, Kendall, Will	52 min
Jun 11, 8:04 PM CDT	Tornado Warning	LOT	DuPage	26 min
Jun 11, 8:07 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LOT	Cook, Lake	53 min
Jun 11, 8:13 PM CDT	Special Marine Warning	LOT		67 min
Jun 11, 8:17 PM CDT	Tornado Warning	LOT	Cook	28 min
Jun 11, 9:06 PM CDT	Areal Flood Advisory	LOT	Boone, DeKalb, Lake, Lee, McHenry, Ogle and 1 more	22 hr
Jun 11, 9:44 PM CDT	River Flood Warning	LOT	Cook	37 hr
Jun 11, 9:47 PM CDT	River Flood Warning	LOT	Cook	19 hr
Jun 11, 10:49 PM CDT	Areal Flood Advisory	LOT	Will	20 hr
Jun 12, 10:39 AM CDT	River Flood Warning	LOT	LaSalle	38 hr
Jun 12, 10:57 AM CDT	River Flood Warning	LOT	Winnebago	33 hr
Jun 12, 11:07 AM CDT	River Flood Watch	LOT	Livingston	8 hr
Jun 11, 7:14 PM CDT	Tornado Warning	LOT	Lake	34 min
Jun 11, 7:30 PM CDT	Tornado Warning	LOT	Lake	30 min
Jun 11, 7:35 PM CDT	Tornado Warning Tornado observedConsiderable damage threat	LOT	Porter	34 min
Jun 11, 7:51 PM CDT	Tornado Warning	LOT	Jasper, Porter	39 min
Jun 11, 8:13 PM CDT	Tornado Warning	LOT	Jasper, Lake, Newton	31 min
Jun 11, 8:26 PM CDT	Severe Thunderstorm Warning Destructive damage threat	LOT	Lake	34 min
Jun 11, 8:30 PM CDT	Severe Thunderstorm Warning	LOT	Jasper, Lake, Porter	49 min
Jun 12, 11:09 AM CDT	River Flood Watch	LOT	Lake, Newton	8 hr

Nearby

Tornado Warnings in Illinois, 2026 Every tornado warning in 2026 Tornadoes in 2026

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.