Alert archive / Illinois / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 3, NWS Chicago, IL
NWS Chicago, IL issued this severe thunderstorm warning at Jun 11, 2021, 3:17 PM CDT for Ogle County, Illinois. It was in force for 43 min. 3 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
- Jun 11, 2021, 3:17 PM CDT (20:17 UTC)
- Expired
- Jun 11, 2021, 4:00 PM CDT
- In force
- 43 min
- Issued by
- NWS Chicago, IL
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 60.0 mph
County Ogle County, IL
The radar
The Chicago radar (KLOT), 100 km from the middle of the area, began a volume at 20:18 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 |
|---|---|---|---|
| Jun 11, 3:26 PM CDT | TSTM WND DMG | 2 Wsw Monroe Center, IL | A 2 FOOT IN DIAMETER TREE WAS BLOWN DOWN AND IS NOW BLOCKING A ROAD 1 MILE SOUTH OF HIGHWAY 72. THE TREE APPEARED TO BE ROTTEN IN THE MIDDLE. TIME ESTIMATED BY RADAR. |
| Jun 11, 3:26 PM CDT | TSTM WND DMG | Lindenwood, IL | ROUGHLY EIGHT MILE SWATH OF TREE DAMAGE IN AND AROUND LINDENWOOD, WITH MULTIPLE PHOTOS OF LARGE AND HEALTHY TREES SNAPPED HALF WAY UP THE TRUNK. A LARGE OUTBUILDING WAS ALSO HEAVILY DAMAGED IN LINDENWOOD. |
| Jun 11, 3:27 PM CDT | TSTM WND DMG | Lindenwood, IL | AN APPROXIMATELY 60 FT COMMS TOWER WAS BLOWN DOWN. TIME ESTIMATED BY RADAR. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 8.3 hours before the alert went out and 126 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
- 1156 J/kg
- Mixed-layer CIN
- -63 J/kg
- Mixed-layer LCL
- 1370 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 16 m²/s²
- 0-3 km storm-relative helicity
- 31 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
467
WUUS53 KLOT 112017
SVRLOT
ILC141-112100-
/O.NEW.KLOT.SV.W.0003.210611T2017Z-210611T2100Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Chicago/Romeoville
317 PM CDT Fri Jun 11 2021
The National Weather Service in Chicago has issued a
* Severe Thunderstorm Warning for...
Eastern Ogle County in north central Illinois...
* Until 400 PM CDT.
* At 317 PM CDT, a severe thunderstorm was located over Davis
Junction, or near Rockford Airport, moving southeast at 15 mph.
HAZARD...60 mph wind gusts and half dollar size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* Locations impacted include...
Rochelle, Davis Junction, Hillcrest, Stillman Valley, Creston,
Lindenwood, Monroe Center and Kings.
Including the following interstates...
I-39 between mile markers 97 and 114.
I-88 between mile markers 75 and 82.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4215 8917 4215 8894 4189 8894 4189 8918
4216 8919 4216 8917
TIME...MOT...LOC 2017Z 333DEG 14KT 4210 8911
HAIL...1.25IN
WIND...60MPH
$$
Kluber3 follow-up statements
795
WWUS53 KLOT 112026
SVSLOT
Severe Weather Statement
National Weather Service Chicago/Romeoville
326 PM CDT Fri Jun 11 2021
ILC141-112100-
/O.CON.KLOT.SV.W.0003.000000T0000Z-210611T2100Z/
Ogle IL-
326 PM CDT Fri Jun 11 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM CDT
FOR EASTERN OGLE COUNTY...
At 325 PM CDT, a severe thunderstorm was located near Davis Junction,
or 9 miles north of Rochelle, moving southeast at 25 mph.
HAZARD...Golf ball size hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect wind
damage to roofs, siding, and trees.
Locations impacted include...
Rochelle, Davis Junction, Hillcrest, Stillman Valley, Creston,
Lindenwood, Monroe Center and Kings.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4215 8917 4215 8894 4189 8894 4189 8918
4216 8919 4216 8917
TIME...MOT...LOC 2025Z 332DEG 22KT 4206 8907
HAIL...1.75IN
WIND...60MPH
$$
Kluber611
WWUS53 KLOT 112038
SVSLOT
Severe Weather Statement
National Weather Service Chicago/Romeoville
338 PM CDT Fri Jun 11 2021
ILC141-112100-
/O.CON.KLOT.SV.W.0003.000000T0000Z-210611T2100Z/
Ogle IL-
338 PM CDT Fri Jun 11 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM CDT
FOR SOUTHEASTERN OGLE COUNTY...
At 337 PM CDT, a severe thunderstorm was located near Hillcrest, or
7 miles northeast of Rochelle, moving southeast 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...
Rochelle, Davis Junction, Hillcrest, Creston, Lindenwood, Monroe
Center and Kings.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4215 8902 4215 8894 4189 8894 4189 8918
4201 8918 4207 8912
TIME...MOT...LOC 2037Z 324DEG 18KT 4201 8902
HAIL...1.00IN
WIND...60MPH
$$
Kluber920
WWUS53 KLOT 112052
SVSLOT
Severe Weather Statement
National Weather Service Chicago/Romeoville
352 PM CDT Fri Jun 11 2021
ILC141-112102-
/O.EXP.KLOT.SV.W.0003.000000T0000Z-210611T2100Z/
Ogle IL-
352 PM CDT Fri Jun 11 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN OGLE COUNTY WILL
EXPIRE AT 400 PM CDT...
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.
LAT...LON 4215 8902 4215 8894 4189 8894 4189 8918
4201 8918 4207 8912
TIME...MOT...LOC 2052Z 333DEG 14KT 4196 8898
$$
KluberThe office that day
Everything else NWS Chicago, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 11, 1:07 PM CDT | Special Weather Statement | LOT | Boone, Cook, DeKalb, DuPage, Ford, Grundy and 10 more | 113 min |
| Jun 11, 3:36 PM CDT | Severe Thunderstorm Warning | LOT | DeKalb, Lee | 54 min |
| Jun 11, 4:17 PM CDT | Areal Flood Advisory | LOT | DeKalb, Ogle | 110 min |
| Jun 11, 4:23 PM CDT | Special Weather Statement | LOT | Kane | 52 min |
| Jun 11, 5:10 PM CDT | Special Weather Statement | LOT | LaSalle | 80 min |
| Jun 11, 5:30 PM CDT | Special Weather Statement | LOT | Grundy | 30 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 2021Every severe thunderstorm warning 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.