Alert archive / Illinois / Tornado Warnings in 2021
Tornado Warning 13, NWS Chicago, IL
NWS Chicago, IL issued this tornado warning at Jun 26, 2021, 11:49 AM CDT for Cook County, Illinois. It was in force for 26 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jun 26, 2021, 11:49 AM CDT (16:49 UTC)
- Expired
- Jun 26, 2021, 12:15 PM CDT
- In force
- 26 min
- Issued by
- NWS Chicago, IL
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.0 in
County Cook County, IL
The radar
The Chicago radar (KLOT), 49 km from the middle of the area, began a volume at 16:50 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 nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 4.8 hours before the alert went out and 211 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 683 J/kg
- Mixed-layer CIN
- -28 J/kg
- Mixed-layer LCL
- 684 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 263 m²/s²
- 0-3 km storm-relative helicity
- 229 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 3.1
The text
As transmitted.
483
WFUS53 KLOT 261649
TORLOT
ILC031-261715-
/O.NEW.KLOT.TO.W.0013.210626T1649Z-210626T1715Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Chicago/Romeoville
1149 AM CDT Sat Jun 26 2021
The National Weather Service in Chicago has issued a
* Tornado Warning for...
East central Cook County in northeastern Illinois...
* Until 1215 PM CDT.
* At 1149 AM CDT, a severe thunderstorm capable of producing a
tornado was located over East Garfield Park, or over West Town,
moving northeast at 40 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows, and vehicles will occur. Tree
damage is likely.
* This dangerous storm will be near...
Lincoln Park, Navy Pier and Near North Side around 1155 AM CDT.
Lake View, Uptown and Edgewater around 1200 PM CDT.
This includes... Lincoln Park Zoo, Hawthorne Park, Soldier Field,
University of Illinois Chicago, Wrigley Field, The Loop, Museum
Campus, and Northerly Island.
Including the following interstates...
I-55 between mile markers 285 and 294.
I-94 between mile markers 44 and 55.
I-290 between mile markers 19 and 29.
I-294 between mile markers 44 and 55.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4197 8764 4196 8763 4196 8764 4191 8762
4190 8762 4189 8761 4188 8762 4187 8762
4187 8761 4184 8761 4178 8777 4189 8788
4200 8766
TIME...MOT...LOC 1649Z 233DEG 34KT 4187 8770
TORNADO...RADAR INDICATED
HAIL...0.00IN
OEMC zones...TORNADO WARNING.
1...2...3...4...5...6...7...and 8.
$$
RC2 follow-up statements
691
WWUS53 KLOT 261703
SVSLOT
Severe Weather Statement
National Weather Service Chicago/Romeoville
1203 PM CDT Sat Jun 26 2021
ILC031-261715-
/O.CON.KLOT.TO.W.0013.000000T0000Z-210626T1715Z/
Cook IL-
1203 PM CDT Sat Jun 26 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1215 PM CDT FOR EAST
CENTRAL COOK COUNTY...
At 1203 PM CDT, a severe thunderstorm capable of producing a tornado
was located over South Lawndale, moving northeast at 45 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
Locations impacted include...
Chicago Loop, Navy Pier, Northerly Island, Near North Side,
Chicago, Lincoln Park, Lake View, Uptown and Edgewater.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4197 8764 4196 8763 4196 8764 4191 8762
4190 8762 4189 8761 4188 8762 4187 8762
4187 8761 4184 8761 4178 8777 4189 8788
4200 8766
TIME...MOT...LOC 1703Z 229DEG 41KT 4185 8773
TORNADO...RADAR INDICATED
HAIL...0.00IN
OEMC zones...TORNADO WARNING.
1...2...3...4...5...6...7...and 8.
$$
RC571
WWUS53 KLOT 261715
SVSLOT
Severe Weather Statement
National Weather Service Chicago/Romeoville
1215 PM CDT Sat Jun 26 2021
ILC031-261725-
/O.EXP.KLOT.TO.W.0013.000000T0000Z-210626T1715Z/
Cook IL-
1215 PM CDT Sat Jun 26 2021
...THE TORNADO WARNING FOR EAST CENTRAL COOK COUNTY HAS EXPIRED...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been allowed to expire. However gusty winds and torrential rain are
still occurring with the thunderstorms moving over the area.
A Tornado Watch remains in effect until 700 PM CDT for northeastern
Illinois.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Chicago.
LAT...LON 4197 8764 4196 8763 4196 8764 4191 8762
4190 8762 4189 8761 4188 8762 4187 8762
4187 8761 4184 8761 4178 8777 4189 8788
4200 8766
TIME...MOT...LOC 1715Z 233DEG 34KT 4190 8764
$$
RCThe office that day
Everything else NWS Chicago, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 25, 8:01 PM CDT | Tornado Warning | LOT | Iroquois | 31 min |
| Jun 25, 8:11 PM CDT | Tornado Warning | LOT | Iroquois | 22 min |
| Jun 25, 8:37 PM CDT | Areal Flood Advisory | LOT | Ford, Iroquois, Kankakee, Livingston | 5 hr |
| Jun 25, 9:11 PM CDT | Special Weather Statement | LOT | Ford | 64 min |
| Jun 25, 10:39 PM CDT | Special Weather Statement | LOT | Ford | 66 min |
| Jun 26, 11:27 AM CDT | Tornado Warning | LOT | Livingston | 18 min |
| Jun 26, 11:34 AM CDT | Tornado Warning | LOT | Will | 26 min |
| Jun 26, 11:44 AM CDT | Tornado Warning | LOT | Grundy, LaSalle, Livingston | 36 min |
| Jun 26, 11:55 AM CDT | Special Marine Warning | LOT | 2 hr | |
| Jun 26, 12:18 PM CDT | Flash Flood Warning | LOT | Cook, DuPage, Will | 6 hr |
| Jun 26, 12:33 PM CDT | Special Marine Warning | LOT | 117 min | |
| Jun 26, 12:34 PM CDT | Severe Thunderstorm Warning | LOT | Cook, Will | 41 min |
| Jun 26, 12:59 PM CDT | Severe Thunderstorm Warning | LOT | Cook | 11 min |
| Jun 26, 1:26 PM CDT | Severe Thunderstorm Warning | LOT | Cook, Will | 34 min |
| Jun 26, 2:08 PM CDT | Tornado Warning | LOT | Cook, Will | 25 min |
| Jun 26, 2:24 PM CDT | Special Marine Warning | LOT | 2 hr | |
| Jun 26, 2:43 PM CDT | Areal Flood Advisory | LOT | Cook, Ford, Grundy, Iroquois, Kankakee, LaSalle and 2 more | 6 hr |
| Jun 26, 3:31 PM CDT | Special Marine Warning | LOT | 119 min | |
| Jun 26, 3:34 PM CDT | Tornado Warning | LOT | Livingston | 41 min |
| Jun 26, 3:50 PM CDT | Flash Flood Warning | LOT | Cook, Grundy, Kankakee, Will | 6 hr |
| Jun 26, 3:56 PM CDT | Tornado Warning | LOT | Kankakee, Will | 34 min |
| Jun 26, 3:57 PM CDT | Flash Flood Warning | LOT | Ford, Grundy, Iroquois, Kankakee, Livingston | 6 hr |
| Jun 26, 3:57 PM CDT | Tornado Warning | LOT | Grundy, Kankakee, Livingston | 33 min |
| Jun 26, 4:13 PM CDT | Severe Thunderstorm Warning | LOT | Ford, Iroquois, Livingston | 47 min |
| Jun 26, 4:23 PM CDT | Tornado Warning | LOT | Ford, Livingston | 36 min |
| Jun 26, 4:26 PM CDT | River Flood Warning | LOT | Cook | 28 hr |
| Jun 26, 4:26 PM CDT | Tornado Warning | LOT | Cook, Will | 34 min |
| Jun 26, 4:30 PM CDT | Special Marine Warning | LOT | 2 hr | |
| Jun 26, 4:41 PM CDT | Tornado Warning | LOT | Kankakee | 34 min |
| Jun 26, 4:49 PM CDT | Severe Thunderstorm Warning | LOT | Ford, Iroquois, Kankakee, Will | 56 min |
| Jun 26, 5:21 PM CDT | Severe Thunderstorm Warning | LOT | Will | 54 min |
| Jun 26, 5:44 PM CDT | Severe Thunderstorm Warning | LOT | Iroquois | 76 min |
| Jun 26, 5:54 PM CDT | Areal Flood Advisory | LOT | Ford, Iroquois, Livingston | 3 hr |
| Jun 26, 6:23 PM CDT | Areal Flood Advisory | LOT | Cook, DuPage, Will | 7 hr |
| Jun 26, 6:55 PM CDT | River Flood Warning | LOT | Livingston | 3 days |
Nearby
Tornado Warnings in Illinois, 2021Every tornado warning in 2021Tornadoes in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.