Alert archive / Illinois / Tornado Warnings in 2021
Tornado Warning 38, NWS Chicago, IL
NWS Chicago, IL issued this tornado warning at Sep 7, 2021, 3:04 PM CDT for Will County, Illinois. It was in force for 26 min. 5 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Sep 7, 2021, 3:04 PM CDT (20:04 UTC)
- Expired
- Sep 7, 2021, 3:30 PM CDT
- In force
- 26 min
- Issued by
- NWS Chicago, IL
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
County Will County, IL
The radar
The Chicago radar (KLOT), 19 km from the middle of the area, began a volume at 20:06 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Sep 7, 3:08 PM CDT | TSTM WND DMG | 1 Ne Channahon, IL | SEVERAL LARGE TREE LIMBS SNAPPED IN CHANNAHON. TIME ESTIMATED FROM RADAR. |
| Sep 7, 3:10 PM CDT | TSTM WND DMG | 2 Ene Channahon, IL | CORRECTS TIME OF PREVIOUS REPORT FROM 2 ENE CHANNAHON. REPORT OF A TREE DOWN ON SB I-55 AT US 6 AND OVERTURNED SEMI TRUCK ON I-55 AT ARSENAL. |
| Sep 7, 3:10 PM CDT | TSTM WND DMG | Channahon, IL | CHANNAHON VILLAGE OFFICIAL REPORTS WIDESPREAD DAMAGE TO TREES AND POWERLINES. ESTIMATE OF 100 OR MORE TREES DAMAGED ACROSS THE VILLAGE WITH SOME TREES UPROOTED. A DOZEN OR MORE TREES ON HOUSES. SIDING DAMAGE TO AT LEAST 2 HOUSES. WORST DAMAGE APPEARS TO BE NEA |
| Sep 7, 3:10 PM CDT | TSTM WND GST 85 | Channahon, IL | AN NWS STORM DAMAGE SURVEY TEAM FOUND WIDESPREAD TREE DAMAGE, INCLUDING NUMEROUS DOWNED, ACROSS MUCH OF AND NEAR CHANNAHON. SOME OF THESE TREES WERE DOWNED ON STRUCTURES. THE DAMAGE WAS CONSISTENT WITH THE HIGHEST WIND GUSTS TO AROUND 85 MPH. |
| Sep 7, 3:24 PM CDT | TSTM WND DMG | 1 Wnw Manhattan, IL | PICTURE OF UTILITY POLLS SNAPPED AT THE BASE RELAYED VIA SOCIAL MEDIA. TIME IS ESTIMATED FROM RADAR. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Sep 7, 1:12 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 8.1 hours before the alert went out and 160 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1964 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 93 m²/s²
- 0-3 km storm-relative helicity
- 115 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
444
WFUS53 KLOT 072004
TORLOT
ILC197-072030-
/O.NEW.KLOT.TO.W.0038.210907T2004Z-210907T2030Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Chicago/Romeoville
304 PM CDT Tue Sep 7 2021
The National Weather Service in Chicago has issued a
* Tornado Warning for...
West central Will County in northeastern Illinois...
* Until 330 PM CDT.
* At 303 PM CDT, a severe thunderstorm capable of producing a tornado
was located north of Minooka, moving east 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.
* This dangerous storm will be near...
Joliet and Elwood around 310 PM CDT.
Crest Hill around 315 PM CDT.
New Lenox, Manhattan and Ingalls Park around 320 PM CDT.
Other locations in the path of this tornadic thunderstorm include
Orland Park, Tinley Park, Mokena, Frankfort and Frankfort Square.
This includes... University of St. Francis, Channahon State Park,
Chicagoland Speedway...Route 66 Raceway, Joliet Junior College, and
Joliet Slammers Baseball.
Including the following interstates...
I-55 between mile markers 246 and 254.
I-80 between mile markers 123 and 149.
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, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 4141 8778 4141 8825 4153 8825 4158 8791
4156 8791 4156 8779 4147 8779 4147 8778
TIME...MOT...LOC 2003Z 264DEG 40KT 4148 8824
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
$$
Petr3 follow-up statements
588
WWUS53 KLOT 072012
SVSLOT
Severe Weather Statement
National Weather Service Chicago/Romeoville
312 PM CDT Tue Sep 7 2021
ILC197-072030-
/O.CON.KLOT.TO.W.0038.000000T0000Z-210907T2030Z/
Will IL-
312 PM CDT Tue Sep 7 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 330 PM CDT FOR WEST
CENTRAL WILL COUNTY...
At 310 PM CDT, a severe thunderstorm capable of producing a tornado
was located southwest of Joliet, moving east at 45 mph. There was an
unconfirmed report of a brief tornado near Minooka with continued
rotation near Shorewood.
HAZARD...Tornado and quarter size hail.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This dangerous storm will be near...
Ingalls Park around 315 PM CDT.
New Lenox and Manhattan around 320 PM CDT.
Other locations in the path of this tornadic thunderstorm include
Orland Park, Tinley Park, Mokena, Frankfort and Frankfort Square.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 4141 8778 4141 8825 4153 8825 4158 8791
4156 8791 4156 8779 4147 8779 4147 8778
TIME...MOT...LOC 2010Z 264DEG 40KT 4149 8813
TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
$$
Petr999
WWUS53 KLOT 072019
SVSLOT
Severe Weather Statement
National Weather Service Chicago/Romeoville
319 PM CDT Tue Sep 7 2021
ILC197-072030-
/O.CON.KLOT.TO.W.0038.000000T0000Z-210907T2030Z/
Will IL-
319 PM CDT Tue Sep 7 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 330 PM CDT FOR CENTRAL
WILL COUNTY...
At 318 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Ingalls Park, or near New Lenox, moving east at 40
mph.
HAZARD...Tornado and quarter size hail.
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...
Orland Park, Mokena, Frankfort, Frankfort Square and Tinley Park.
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, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 4141 8778 4141 8812 4154 8816 4156 8791
4156 8779 4147 8779 4147 8778
TIME...MOT...LOC 2018Z 263DEG 37KT 4150 8804
TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
$$
Petr704
WWUS53 KLOT 072031
SVSLOT
Severe Weather Statement
National Weather Service Chicago/Romeoville
331 PM CDT Tue Sep 7 2021
ILC197-072040-
/O.EXP.KLOT.TO.W.0038.000000T0000Z-210907T2030Z/
Will IL-
331 PM CDT Tue Sep 7 2021
...THE TORNADO WARNING FOR CENTRAL WILL COUNTY HAS EXPIRED...
The tornadic circulation which prompted the warning has weakened.
Therefore, the warning has been allowed to expire.
A Severe Thunderstorm Watch remains in effect until 900 PM CDT for
northeastern Illinois.
Remember, a Severe Thunderstorm Warning still remains in effect for
central Will county.
LAT...LON 4141 8778 4141 8812 4154 8816 4156 8791
4156 8779 4147 8779 4147 8778
TIME...MOT...LOC 2030Z 264DEG 40KT 4151 8789
$$
PetrThe office that day
Everything else NWS Chicago, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 6, 9:29 PM CDT | Small Craft Advisory | LOT | 55 hr | |
| Sep 7, 12:37 PM CDT | Severe Thunderstorm Warning | LOT | Boone, McHenry, Winnebago | 53 min |
| Sep 7, 12:47 PM CDT | Special Marine Warning | LOT | 118 min | |
| Sep 7, 1:13 PM CDT | Special Weather Statement | LOT | Boone, DeKalb, Kane, Lee, Ogle | 32 min |
| Sep 7, 1:20 PM CDT | Severe Thunderstorm Warning | LOT | Lake, McHenry | 55 min |
| Sep 7, 1:23 PM CDT | Severe Thunderstorm Warning | LOT | DeKalb, Kane, Lee, Ogle | 67 min |
| Sep 7, 1:41 PM CDT | Severe Thunderstorm Warning | LOT | Cook | 49 min |
| Sep 7, 1:51 PM CDT | Special Marine Warning | LOT | 3 hr | |
| Sep 7, 2:03 PM CDT | Severe Thunderstorm Warning | LOT | Grundy, Kendall, LaSalle | 72 min |
| Sep 7, 2:15 PM CDT | Areal Flood Advisory | LOT | Lake, McHenry | 3 hr |
| Sep 7, 2:15 PM CDT | Severe Thunderstorm Warning | LOT | Lake | 30 min |
| Sep 7, 2:29 PM CDT | Severe Thunderstorm Warning | LOT | Grundy, Kendall, LaSalle | 46 min |
| Sep 7, 2:41 PM CDT | Special Marine Warning | LOT | 94 min | |
| Sep 7, 2:57 PM CDT | Severe Thunderstorm Warning | LOT | Grundy, Kankakee, Kendall, LaSalle, Will | 63 min |
| Sep 7, 3:28 PM CDT | Severe Thunderstorm Warning | LOT | Cook, Kankakee, Will | 62 min |
| Sep 7, 4:06 PM CDT | Severe Thunderstorm Warning | LOT | Ford, Iroquois, Kankakee, LaSalle, Livingston | 54 min |
| Sep 7, 4:34 PM CDT | Special Weather Statement | LOT | Kankakee | 56 min |
| Sep 7, 4:59 PM CDT | Severe Thunderstorm Warning | LOT | Ford, Iroquois, Livingston | 61 min |
| Sep 7, 5:21 PM CDT | Special Weather Statement | LOT | Grundy | 39 min |
| Sep 7, 5:46 PM CDT | Severe Thunderstorm Warning | LOT | Grundy, Kankakee, Livingston, Will | 44 min |
| Sep 7, 6:53 PM CDT | Areal Flood Advisory | LOT | Iroquois, Kankakee | 3 hr |
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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.