Alert archive / Illinois / High Wind Warnings in 2021

High Wind Warning 1, NWS Chicago, IL

December 15, 202118 counties in Illinois; 5 counties in Indiana

NWS Chicago, IL issued this high wind warning at Dec 15, 2021, 3:09 AM CST for 18 counties in Illinois; 5 counties in Indiana. It took effect at Dec 15, 2021, 6:00 PM CST. It was in force for 15 hr. 46 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Dec 15, 2021, 3:09 AM CST (09:09 UTC)
In effect from
Dec 15, 2021, 6:00 PM CST
Expired
Dec 16, 2021, 9:00 AM CST
In force
15 hr
Issued by
NWS Chicago, IL
All 23 counties

Boone County, IL, Cook County, IL, DeKalb County, IL, DuPage County, IL, Ford County, IL, Grundy County, IL, Iroquois County, IL, Kane County, IL, Kankakee County, IL, Kendall County, IL, Lake County, IL, LaSalle County, IL, Lee County, IL, Livingston County, IL, McHenry County, IL, Ogle County, IL, Will County, IL, Winnebago County, IL, Benton County, IN, Jasper County, IN, Lake County, IN, Newton County, IN, Porter County, IN

The radar

The Chicago radar (KLOT), 12 km from the middle of the area, began a volume at 09:07 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

TimeReportWhereRemark
Dec 15, 8:00 PM CSTNON-TSTM WND DMG1 E Triumph, ILTREE DOWNED ON NORTH 39TH ROAD EAST OF TRIUMPH. TIME ESTIMATED.
Dec 15, 8:15 PM CSTNON-TSTM WND DMGDowners Grove, ILDOWNED POWER LINES THAT CLOSED 63RD STREET IN DOWNERS GROVE.
Dec 15, 8:45 PM CSTNON-TSTM WND DMG1 E Wadsworth, IL16 INCH DIAMETER TREE BRANCH DOWNED.
Dec 15, 8:45 PM CSTNON-TSTM WND DMG2 E Wayne, ILMULTIPLE POLE POWERS AND POWER LINES DOWNED.
Dec 15, 9:00 PM CSTNON-TSTM WND DMGJohnsburg, ILMEDIUM SIZED PINE TREE DOWNED. TIME ESTIMATED.
Dec 15, 9:03 PM CSTNON-TSTM WND GST 545 Ssw Pontiac, ILMESONET STATION UP797 PONTIAC 5 SSW (UP RAIL).
Dec 15, 9:09 PM CSTNON-TSTM WND GST 56Ohare Airport, IL
Dec 15, 9:20 PM CSTNON-TSTM WND GST 665 Ene Herbert, ILMESONET STATION IMC01 HERBERT 5 ENE (MCHENRY DOT).
Dec 15, 9:20 PM CSTNON-TSTM WND DMG1 N La Salle, ILLARGE TREE BRANCH OVER 1 FOOT IN DIAMETER FELL ON AN APARTMENT BUILDING IN LASALLE ON GRANT AVE.
Dec 15, 9:25 PM CSTNON-TSTM WND GST 512 Ssw Lombard, ILMESONET STATION GMBRD 1 SSW LOMBARD.
Dec 15, 9:27 PM CSTNON-TSTM WND GST 63Waukegan, ILRECORDED AT WAUKEGAN REGIONAL AIRPORT (KUGN).
Dec 15, 9:30 PM CSTNON-TSTM WND GST 541 S Dwight, ILMESONET STATION EW5866 DWIGHT.
Dec 15, 9:35 PM CSTNON-TSTM WND GST 603 Ese Dixon, ILMESONET STATION UP060 DIXON 3 ESE (UP RAIL).
Dec 15, 9:46 PM CSTNON-TSTM WND GST 60Ohare Airport, IL
Dec 15, 10:10 PM CSTNON-TSTM WND DMG1 Nw Uptown - Chicago, ILLARGE TREE DOWNED ON MULTIPLE CARS.
Dec 15, 10:15 PM CSTNON-TSTM WND GST 523 Nne Pontiac, ILAWOS STATION KPNT PONTIAC AIRPORT.
Dec 15, 10:44 PM CSTNON-TSTM WND GST 504 Wsw Rochelle, ILMESONET STATION UP086 ROCHELLE 4 WSW (UP RAIL).
Dec 15, 10:46 PM CSTNON-TSTM WND GST 563 W Mount Morris, ILMESONET STATION FW3055 MOUNT MORRIS.
Dec 15, 10:55 PM CSTNON-TSTM WND GST 531 Nnw Cortland, ILAWOS STATION KDKB DEKALB AIRPORT.
Dec 15, 10:55 PM CSTNON-TSTM WND GST 552 Nw Peru, ILAWOS STATION KVYS PERU AIRPORT.
Dec 15, 11:00 PM CSTNON-TSTM WND GST 58Nws Chicago-Romeoville, ILMEASURED 58 MPH WIND GUST AT KLOT.
Dec 15, 11:09 PM CSTNON-TSTM WND GST 521 Nw Rochelle, ILMESONET STATION CW8255 ROCHELLE.
Dec 15, 11:16 PM CSTNON-TSTM WND GST 582 Ene Remington, INMESONET STATION IN048 1.7 E REMINGTON (INDOT).
Dec 15, 11:20 PM CSTNON-TSTM WND GST 582 S Crystal Lake, ILMESONET STATION IMC03 CRYSTAL LAKE (MCHENRY DOT).
Dec 15, 11:25 PM CSTNON-TSTM WND GST 521 Sw St. Charles, ILMESONET STATION FW3994 SAINT CHARLES.
Dec 15, 11:30 PM CSTNON-TSTM WND GST 512 Nw Plainfield, ILMESONET STATION FW8710 PLAINFIELD.
Dec 15, 11:30 PM CSTNON-TSTM WND DMGStreamwood, ILLARGE TREE DOWNED ON CAR AT RESIDENCE.
Dec 15, 11:30 PM CSTNON-TSTM WND DMGStreamwood, ILLARGE TREE DOWNED ON CAR AT RESIDENCE. TIME ESTIMATED.
Dec 15, 11:34 PM CSTNON-TSTM WND GST 69Sugar Grove, IL&&
Dec 15, 11:34 PM CSTNON-TSTM WND GST 69Sugar Grove, IL
Dec 15, 11:35 PM CSTNON-TSTM WND GST 611 Ssw Hammond, INMESONET STATION EW9197 MUNSTER.
Dec 15, 11:37 PM CSTNON-TSTM WND GST 66Ohare Airport, IL&&
Dec 15, 11:37 PM CSTNON-TSTM WND GST 66Ohare Airport, IL
Dec 15, 11:45 PM CSTNON-TSTM WND GST 57Joliet, ILRELAYED VIA SOCIAL MEDIA.
Dec 15, 11:45 PM CSTNON-TSTM WND GST 57Joliet, IL
Dec 15, 11:48 PM CSTNON-TSTM WND DMG1 W Batavia, ILROUGHLY 14 TO 15 FOOT EVERGREEN TREE UPROOTED AND NOW LEANING ON POWER LINES ACROSS FROM BATAVIA HIGH SCHOOL.
Dec 15, 11:54 PM CSTNON-TSTM WND GST 62Rockford Airport, ILASOS STATION KRFD ROCKFORD AIRPORT.
Dec 15, 11:57 PM CSTNON-TSTM WND GST 521 Se Highland Park, ILMESONET STATION UR358 HIGHLAND PARK (UP RAIL).
Dec 16, 12:00 AM CSTNON-TSTM WND DMGTriumph, ILTREES REPORTED DOWN ON NORTH 29TH ROAD NEAR TRIUMPH. TIME ESTIMATED.
Dec 16, 12:53 AM CSTNON-TSTM WND GST 61Midway Airport, ILASOS STATION KMDW CHICAGO MIDWAY.
Dec 16, 12:56 AM CSTNON-TSTM WND GST 594 Ese Valparaiso, INASOS STATION KVPZ VALPARAISO AIRPORT.
Dec 16, 1:20 AM CSTNON-TSTM WND GST 615 Nw Marengo, ILMESONET STATION IMC02 MARENGO 5 NW (MCHENRY DOT).
Dec 16, 1:52 AM CSTNON-TSTM WND GST 672 Se Wheeling, ILASOS STATION KPWK WHEELING - CHICAGO EXEC. ARPT.
Dec 16, 2:40 AM CSTNON-TSTM WND DMGMorton Grove, ILSEVERAL TREE LIMBS DOWNED.
Dec 16, 3:10 AM CSTNON-TSTM WND DMG2 Ene Schaumburg, ILEASTBOUND HIGGINS ROAD CLOSED BETWEEN PLUM GROVE ROAD AND NATIONAL PARKWAY DUE TO DOWNED POWER LINES.
Dec 16, 4:59 AM CSTNON-TSTM WND DMG1 E Golf, ILREPORT OF A TREE DOWN NEAR THE INTERSECTION OF GOLF AND HARMS ROADS.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 9.2 hours before the alert went out and 158 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.

Skew-T log-pSkew-T log-p diagram, Lincoln, IL at 00:00Z on 2021-12-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 00:00Z on 2021-12-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 300 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
721 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
300 m²/s²
0-3 km storm-relative helicity
348 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

653 
WWUS73 KLOT 150909
NPWLOT

URGENT - WEATHER MESSAGE
National Weather Service Chicago IL
309 AM CST Wed Dec 15 2021

ILZ003>006-008-010>013-019-020-103-104-151715-
/O.UPG.KLOT.HW.A.0001.211216T0000Z-211216T1200Z/
/O.NEW.KLOT.HW.W.0001.211216T0000Z-211216T1500Z/
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Northern Cook-Central Cook-
Including the cities of Rockford, Belvidere, Crystal Lake, 
Algonquin, McHenry, Woodstock, Waukegan, Buffalo Grove, 
Mundelein, Gurnee, Rochelle, Oregon, Byron, Dixon, DeKalb, 
Sycamore, Aurora, Elgin, Naperville, Wheaton, Downers Grove, 
Lombard, Carol Stream, Ottawa, Streator, La Salle, Mendota, 
Marseilles, Oswego, Yorkville, Plano, Evanston, Des Plaines, 
Schaumburg, Palatine, Northbrook, Chicago, Cicero, Oak Lawn, 
Oak Park, and La Grange
309 AM CST Wed Dec 15 2021

...HIGH WIND WARNING IN EFFECT FROM 6 PM THIS EVENING TO 9 AM CST
THURSDAY...

* WHAT...Southwest winds 30 to 35 mph with gusts up to 60 mph
  expected.

* WHERE...Portions of north central and northeast Illinois,
  including Chicago and Rockford.

* WHEN...From 6 PM this evening to 9 AM CST Thursday, with the
  period most favored for damaging winds being between 8PM and 
  3AM.

* IMPACTS...Damaging winds are likely to blow down trees and 
  power lines. Widespread power outages are possible. Travel will 
  be difficult, especially for high profile vehicles.

* ADDITIONAL DETAILS...Secure any outdoor decorations, including
  holiday decorations, and lighter outdoor furniture. Use caution
  when driving in windy conditions, especially on interstates and
  open roads.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People should avoid being outside in forested areas and around
trees and branches. If possible, remain in the lower levels of
your home during the windstorm, and avoid windows. Use caution if
you must drive.

&&

$$

ILZ021-105>108-151715-
/O.UPG.KLOT.HW.A.0001.211216T0000Z-211216T1200Z/
/O.EXB.KLOT.WI.Y.0010.211216T0000Z-211216T1500Z/
Grundy-Southern Cook-Northern Will-Southern Will-Eastern Will-
Including the cities of Morris, Coal City, Minooka, Calumet City,
Oak Forest, Lemont, Orland Park, Park Forest, Joliet, 
Bolingbrook, Plainfield, Mokena, Channahon, Manhattan, 
Wilmington, Crete, Peotone, and Beecher
309 AM CST Wed Dec 15 2021

...WIND ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 9 AM CST
THURSDAY...

* WHAT...Southwest winds 25 to 30 mph with gusts up to 50 to 55 
  mph expected.

* WHERE...Grundy, Southern Cook, Northern Will, Southern Will 
  and Eastern Will Counties.

* WHEN...From 6 PM this evening to 9 AM CST Thursday.

* IMPACTS...Gusty winds could blow around unsecured objects. 
  Tree limbs could be blown down and a few power outages may 
  result.

* ADDITIONAL DETAILS...Secure any outdoor decorations, including
  holiday decorations, and lighter outdoor furniture. Use caution
  when driving in windy conditions, especially on interstates and
  open roads.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects.

&&

$$

INZ001-002-010-011-019-151715-
/O.EXB.KLOT.WI.Y.0010.211216T0000Z-211216T1500Z/
Lake IN-Porter-Newton-Jasper-Benton-
Including the cities of Gary, Hammond, Merrillville, Portage, 
Valparaiso, Chesterton, Roselawn, Kentland, Morocco, Rensselaer, 
DeMotte, Fowler, and Oxford
309 AM CST Wed Dec 15 2021 /409 AM EST Wed Dec 15 2021/

...WIND ADVISORY IN EFFECT FROM 6 PM CST /7 PM EST/ THIS EVENING
TO 9 AM CST /10 AM EST/ THURSDAY...

* WHAT...Southwest winds 25 to 30 mph with gusts up to 50 to 55 
  mph expected.

* WHERE...Lake IN, Porter, Newton, Jasper and Benton Counties.

* WHEN...From 6 PM CST /7 PM EST/ this evening to 9 AM CST /10 
  AM EST/ Thursday.

* IMPACTS...Gusty winds could blow around unsecured objects. 
  Tree limbs could be blown down and a few power outages may 
  result.

* ADDITIONAL DETAILS...Secure any outdoor decorations, including
  holiday decorations, and lighter outdoor furniture. Use caution
  when driving in windy conditions, especially on interstates and
  open roads.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects.

&&

$$

ILZ023-032-033-039-151715-
/O.EXT.KLOT.WI.Y.0010.211216T0000Z-211216T1500Z/
Kankakee-Livingston-Iroquois-Ford-
Including the cities of Kankakee, Bourbonnais, Bradley, Pontiac, 
Dwight, Fairbury, Watseka, Gilman, Paxton, and Gibson City
309 AM CST Wed Dec 15 2021

...WIND ADVISORY NOW IN EFFECT FROM 6 PM THIS EVENING TO 9 AM CST
THURSDAY...

* WHAT...Southwest winds 25 to 30 mph with gusts up to 50 to 55 
  mph expected.

* WHERE...Kankakee, Ford, Livingston and Iroquois Counties.

* WHEN...From 6 PM this evening to 9 AM CST Thursday.

* IMPACTS...Gusty winds could blow around unsecured objects. 
  Tree limbs could be blown down and a few power outages may 
  result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects.

&&

$$
6 follow-up statements
785 
WWUS73 KLOT 151745
NPWLOT

URGENT - WEATHER MESSAGE
National Weather Service Chicago IL
1145 AM CST Wed Dec 15 2021

ILZ003>006-008-010>013-019-020-103-104-160145-
/O.CON.KLOT.HW.W.0001.211216T0000Z-211216T1500Z/
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Northern Cook-Central Cook-
Including the cities of Rockford, Belvidere, Crystal Lake, 
Algonquin, McHenry, Woodstock, Waukegan, Buffalo Grove, 
Mundelein, Gurnee, Rochelle, Oregon, Byron, Dixon, DeKalb, 
Sycamore, Aurora, Elgin, Naperville, Wheaton, Downers Grove, 
Lombard, Carol Stream, Ottawa, Streator, La Salle, Mendota, 
Marseilles, Oswego, Yorkville, Plano, Evanston, Des Plaines, 
Schaumburg, Palatine, Northbrook, Chicago, Cicero, Oak Lawn, 
Oak Park, and La Grange
1145 AM CST Wed Dec 15 2021

...HIGH WIND WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING TO
9 AM CST THURSDAY...

* WHAT...Southwest winds 30 to 35 mph with gusts to around 60 mph 
  expected.

* WHERE...Portions of north central and northeast Illinois, 
  including Chicago and Rockford.

* WHEN...From 6 PM this evening to 9 AM CST Thursday, with the 
  period most favored for damaging winds being between 8PM and 
  3AM.

* IMPACTS...Damaging winds are likely to blow down trees and 
  power lines. Widespread power outages are possible. Travel 
  will be difficult, especially for high profile vehicles.

* ADDITIONAL DETAILS...Secure any outdoor decorations, including 
  holiday decorations, and lighter outdoor furniture. Use 
  caution when driving in windy conditions, especially on 
  interstates and open roads.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People should avoid being outside in forested areas and around
trees and branches. If possible, remain in the lower levels of
your home during the windstorm, and avoid windows. Use caution if
you must drive.

&&

$$

ILZ021-023-032-033-039-105>108-INZ001-002-010-011-019-160145-
/O.CON.KLOT.WI.Y.0010.211216T0000Z-211216T1500Z/
Grundy-Kankakee-Livingston-Iroquois-Ford-Southern Cook-
Northern Will-Southern Will-Eastern Will-Lake IN-Porter-Newton-
Jasper-Benton-
Including the cities of Morris, Coal City, Minooka, Kankakee, 
Bourbonnais, Bradley, Pontiac, Dwight, Fairbury, Watseka, Gilman,
Paxton, Gibson City, Calumet City, Oak Forest, Lemont, 
Orland Park, Park Forest, Joliet, Bolingbrook, Plainfield, 
Mokena, Channahon, Manhattan, Wilmington, Crete, Peotone, 
Beecher, Gary, Hammond, Merrillville, Portage, Valparaiso, 
Chesterton, Roselawn, Kentland, Morocco, Rensselaer, DeMotte, 
Fowler, and Oxford
1145 AM CST Wed Dec 15 2021 /1245 PM EST Wed Dec 15 2021/

...WIND ADVISORY REMAINS IN EFFECT FROM 6 PM CST /7 PM EST/ THIS
EVENING TO 9 AM CST /10 AM EST/ THURSDAY...

* WHAT...Southwest winds 25 to 30 mph with gusts up to 50 to 55 
  mph expected.

* WHERE...Grundy, Southern Cook, Northern Will, Southern Will 
  and Eastern Will Counties.

* WHEN...From 6 PM this evening to 9 AM CST Thursday.

* IMPACTS...Gusty winds could blow around unsecured objects. 
  Tree limbs could be blown down and a few power outages may 
  result.

* ADDITIONAL DETAILS...Secure any outdoor decorations, including 
  holiday decorations, and lighter outdoor furniture. Use 
  caution when driving in windy conditions, especially on 
  interstates and open roads.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects.

&&

$$
563 
WWUS73 KLOT 152157
NPWLOT

URGENT - WEATHER MESSAGE
National Weather Service Chicago IL
357 PM CST Wed Dec 15 2021

ILZ003>006-008-010>013-019-020-103-104-160600-
/O.CON.KLOT.HW.W.0001.211216T0000Z-211216T1500Z/
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Northern Cook-Central Cook-
Including the cities of Rockford, Belvidere, Crystal Lake, 
Algonquin, McHenry, Woodstock, Waukegan, Buffalo Grove, 
Mundelein, Gurnee, Rochelle, Oregon, Byron, Dixon, DeKalb, 
Sycamore, Aurora, Elgin, Naperville, Wheaton, Downers Grove, 
Lombard, Carol Stream, Ottawa, Streator, La Salle, Mendota, 
Marseilles, Oswego, Yorkville, Plano, Evanston, Des Plaines, 
Schaumburg, Palatine, Northbrook, Chicago, Cicero, Oak Lawn, 
Oak Park, and La Grange
357 PM CST Wed Dec 15 2021

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 9 AM CST THURSDAY...

* WHAT...Southwest winds 30 to 35 mph with gusts to around 60 
  mph expected.

* WHERE...Portions of north central and northeast Illinois, 
  including Chicago and Rockford.

* WHEN...From 6 PM this evening to 9 AM CST Thursday, with the 
  period most favored for damaging winds being between 8PM and 
  3AM.

* IMPACTS...Damaging winds are likely to blow down trees and 
  power lines. Widespread power outages are possible. Travel 
  will be difficult, especially for high profile vehicles.

* ADDITIONAL DETAILS...A line of showers and thunderstorms may
  result in a short period of even higher wind gusts late this
  evening. Be alert for severe thunderstorm warnings. Secure any 
  outdoor decorations and lighter outdoor furniture. Use caution 
  when driving in windy conditions, especially on interstates and 
  open roads.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People should avoid being outside in forested areas and around
trees and branches. If possible, remain in the lower levels of
your home during the windstorm, and avoid windows. Use caution if
you must drive.

&&

$$

ILZ021-023-032-033-039-105>108-INZ001-002-010-011-019-160600-
/O.CON.KLOT.WI.Y.0010.211216T0000Z-211216T1500Z/
Grundy-Kankakee-Livingston-Iroquois-Ford-Southern Cook-
Northern Will-Southern Will-Eastern Will-Lake IN-Porter-Newton-
Jasper-Benton-
Including the cities of Morris, Coal City, Minooka, Kankakee, 
Bourbonnais, Bradley, Pontiac, Dwight, Fairbury, Watseka, Gilman,
Paxton, Gibson City, Calumet City, Oak Forest, Lemont, 
Orland Park, Park Forest, Joliet, Bolingbrook, Plainfield, 
Mokena, Channahon, Manhattan, Wilmington, Crete, Peotone, 
Beecher, Gary, Hammond, Merrillville, Portage, Valparaiso, 
Chesterton, Roselawn, Kentland, Morocco, Rensselaer, DeMotte, 
Fowler, and Oxford
357 PM CST Wed Dec 15 2021 /457 PM EST Wed Dec 15 2021/

...WIND ADVISORY REMAINS IN EFFECT UNTIL 9 AM CST /10 AM EST/
THURSDAY...

* WHAT...Southwest winds 25 to 30 mph with gusts up to 50 to 55 
  mph expected.

* WHERE...Grundy, Southern Cook, Northern Will, Southern Will 
  and Eastern Will Counties.

* WHEN...From 6 PM this evening to 9 AM CST Thursday.

* IMPACTS...Gusty winds could blow around unsecured objects. 
  Tree limbs could be blown down and a few power outages may 
  result.

* ADDITIONAL DETAILS...A line of showers and thunderstorms may
  result in a short period of even higher wind gusts late this
  evening, mainly west of Interstate 55. Be alert for severe
  thunderstorm warnings. Secure any outdoor decorations and 
  lighter outdoor furniture. Use caution when driving in windy 
  conditions, especially on interstates and open roads.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects.

&&

$$

MDB
923 
WWUS73 KLOT 160223
NPWLOT

URGENT - WEATHER MESSAGE
National Weather Service Chicago IL
823 PM CST Wed Dec 15 2021

ILZ021-023-032-033-039-105>108-INZ001-002-010-011-019-161030-
/O.UPG.KLOT.WI.Y.0010.000000T0000Z-211216T1500Z/
/O.EXA.KLOT.HW.W.0001.000000T0000Z-211216T1500Z/
Grundy-Kankakee-Livingston-Iroquois-Ford-Southern Cook-
Northern Will-Southern Will-Eastern Will-Lake IN-Porter-Newton-
Jasper-Benton-
Including the cities of Morris, Coal City, Minooka, Kankakee, 
Bourbonnais, Bradley, Pontiac, Dwight, Fairbury, Watseka, Gilman,
Paxton, Gibson City, Calumet City, Oak Forest, Lemont, 
Orland Park, Park Forest, Joliet, Bolingbrook, Plainfield, 
Mokena, Channahon, Manhattan, Wilmington, Crete, Peotone, 
Beecher, Gary, Hammond, Merrillville, Portage, Valparaiso, 
Chesterton, Roselawn, Kentland, Morocco, Rensselaer, DeMotte, 
Fowler, and Oxford
823 PM CST Wed Dec 15 2021 /923 PM EST Wed Dec 15 2021/

...HIGH WIND WARNING IN EFFECT UNTIL 9 AM CST THURSDAY...

* WHAT...South to southwest winds 25 to 40 mph with gusts of 55 to
  65 mph likely. 

* WHERE...Portions of northwest Indiana and central, east 
  central and northeast Illinois.

* WHEN...Until 9 AM CST Thursday.

* IMPACTS...Damaging winds will blow down trees and power lines. 
  Widespread power outages are expected. Travel will be 
  difficult, especially for high profile vehicles.

*PRECAUTIONARY/PREPAREDNESS ACTIONS...

People should avoid being outside in forested areas and around
trees and branches. If possible, remain in the lower levels of
your home during the windstorm, and avoid windows. Use caution if
you must drive.

&&

$$

ILZ003>006-008-010>013-019-020-103-104-161030-
/O.CON.KLOT.HW.W.0001.000000T0000Z-211216T1500Z/
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Northern Cook-Central Cook-
Including the cities of Rockford, Belvidere, Crystal Lake, 
Algonquin, McHenry, Woodstock, Waukegan, Buffalo Grove, 
Mundelein, Gurnee, Rochelle, Oregon, Byron, Dixon, DeKalb, 
Sycamore, Aurora, Elgin, Naperville, Wheaton, Downers Grove, 
Lombard, Carol Stream, Ottawa, Streator, La Salle, Mendota, 
Marseilles, Oswego, Yorkville, Plano, Evanston, Des Plaines, 
Schaumburg, Palatine, Northbrook, Chicago, Cicero, Oak Lawn, 
Oak Park, and La Grange
823 PM CST Wed Dec 15 2021

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 9 AM CST THURSDAY...

* WHAT...South to southwest winds 25 to 40 mph with gusts of 55 
  to 65 mph likely. 

* WHERE...Portions of north central and northeast Illinois.

* WHEN...Until 9 AM CST Thursday.

* IMPACTS...Damaging winds will blow down trees and power lines. 
  Widespread power outages are expected. Travel will be 
  difficult, especially for high profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People should avoid being outside in forested areas and around
trees and branches. If possible, remain in the lower levels of
your home during the windstorm, and avoid windows. Use caution if
you must drive.

&&

$$

- Izzi
778 
WWUS73 KLOT 160918
NPWLOT

URGENT - WEATHER MESSAGE
National Weather Service Chicago IL
318 AM CST Thu Dec 16 2021

ILZ008-010-019-021-032-033-039-INZ019-161200-
/O.EXT.KLOT.HW.W.0001.000000T0000Z-211216T1200Z/
Ogle-Lee-La Salle-Grundy-Livingston-Iroquois-Ford-Benton-
Including the cities of Rochelle, Oregon, Byron, Dixon, Ottawa, 
Streator, La Salle, Mendota, Marseilles, Morris, Coal City, 
Minooka, Pontiac, Dwight, Fairbury, Watseka, Gilman, Paxton, 
Gibson City, Fowler, and Oxford
318 AM CST Thu Dec 16 2021 /418 AM EST Thu Dec 16 2021/

...HIGH WIND WARNING NOW IN EFFECT UNTIL 6 AM CST /7 AM EST/
EARLY THIS MORNING...

* WHAT...Southwest to west winds 25 to 30 mph with gusts of up to
  45 to 55 mph easing through this morning.

* WHERE...In Indiana, Benton County. In Illinois, Ogle, Grundy, 
  Lee, La Salle, Ford, Livingston and Iroquois Counties.

* WHEN...Until 6 AM CST /7 AM EST/ early this morning.

* IMPACTS...Damaging winds will be capable of blowing down 
  branches as well as power lines. Scattered power outages will 
  continue. Travel will be difficult, especially for high profile 
  vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People should avoid being outside in forested areas and around
trees and branches. If possible, remain in the lower levels of
your home during the windstorm, and avoid windows. Use caution if
you must drive.

&&

$$

ILZ003>006-011>013-020-023-103>108-INZ001-002-010-011-161500-
/O.CON.KLOT.HW.W.0001.000000T0000Z-211216T1500Z/
Winnebago-Boone-McHenry-Lake IL-De Kalb-Kane-DuPage-Kendall-
Kankakee-Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-
Including the cities of Rockford, Belvidere, Crystal Lake, 
Algonquin, McHenry, Woodstock, Waukegan, Buffalo Grove, 
Mundelein, Gurnee, DeKalb, Sycamore, Aurora, Elgin, Naperville, 
Wheaton, Downers Grove, Lombard, Carol Stream, Oswego, Yorkville,
Plano, Kankakee, Bourbonnais, Bradley, Evanston, Des Plaines, 
Schaumburg, Palatine, Northbrook, Chicago, Cicero, Oak Lawn, 
Oak Park, La Grange, Calumet City, Oak Forest, Lemont, 
Orland Park, Park Forest, Joliet, Bolingbrook, Plainfield, 
Mokena, Channahon, Manhattan, Wilmington, Crete, Peotone, 
Beecher, Gary, Hammond, Merrillville, Portage, Valparaiso, 
Chesterton, Roselawn, Kentland, Morocco, Rensselaer, and DeMotte
318 AM CST Thu Dec 16 2021

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 9 AM CST THIS
MORNING...

* WHAT...Southwest to west winds 25 to 35 mph with gusts up to 55
  to 60 mph gradually easing through this morning.

* WHERE...Portions of northwest Indiana and north central and
  northeast Illinois, including Chicago and Rockford.

* WHEN...Until 9 AM CST this morning. The highest wind gusts will 
  be prior to 7 AM this morning.

* IMPACTS...Damaging winds will blow down small trees and
  branches, as well as power lines. Scattered power outages will
  continue. Travel will be difficult, especially for high profile
  vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People should avoid being outside in forested areas and around
trees and branches. If possible, remain in the lower levels of
your home during the windstorm, and avoid windows. Use caution if
you must drive.

&&

$$
556 
WWUS73 KLOT 161156
NPWLOT

URGENT - WEATHER MESSAGE
National Weather Service Chicago IL
556 AM CST Thu Dec 16 2021

ILZ003-004-011-020-023-105>108-INZ001-002-010-011-161300-
/O.CAN.KLOT.HW.W.0001.000000T0000Z-211216T1500Z/
Winnebago-Boone-De Kalb-Kendall-Kankakee-Southern Cook-
Northern Will-Southern Will-Eastern Will-Lake IN-Porter-Newton-
Jasper-
Including the cities of Rockford, Belvidere, DeKalb, Sycamore, 
Oswego, Yorkville, Plano, Kankakee, Bourbonnais, Bradley, 
Calumet City, Oak Forest, Lemont, Orland Park, Park Forest, 
Joliet, Bolingbrook, Plainfield, Mokena, Channahon, Manhattan, 
Wilmington, Crete, Peotone, Beecher, Gary, Hammond, Merrillville,
Portage, Valparaiso, Chesterton, Roselawn, Kentland, Morocco, 
Rensselaer, and DeMotte
556 AM CST Thu Dec 16 2021

...HIGH WIND WARNING IS CANCELLED...

Wind speeds continue to gradually ease early this morning, coming
down from the peak wind gusts from last night. Some gusts to 40 
to 45 mph, or slightly higher, will occur through mid morning. But
the trend will continue to be gradually downward.

$$

ILZ008-010-019-021-032-033-039-INZ019-161300-
/O.CAN.KLOT.HW.W.0001.000000T0000Z-211216T1200Z/
Ogle-Lee-La Salle-Grundy-Livingston-Iroquois-Ford-Benton-
Including the cities of Rochelle, Oregon, Byron, Dixon, Ottawa, 
Streator, La Salle, Mendota, Marseilles, Morris, Coal City, 
Minooka, Pontiac, Dwight, Fairbury, Watseka, Gilman, Paxton, 
Gibson City, Fowler, and Oxford
556 AM CST Thu Dec 16 2021 /656 AM EST Thu Dec 16 2021/

...HIGH WIND WARNING WILL EXPIRE AT 6 AM...

Wind speeds continue to gradually ease early this morning, coming
down from the peak wind gusts of last night. Some gusts to 40 to 
45 mph may still be seen this morning.

$$

ILZ005-006-012-013-103-104-161500-
/O.CON.KLOT.HW.W.0001.000000T0000Z-211216T1500Z/
McHenry-Lake IL-Kane-DuPage-Northern Cook-Central Cook-
Including the cities of Crystal Lake, Algonquin, McHenry, 
Woodstock, Waukegan, Buffalo Grove, Mundelein, Gurnee, Aurora, 
Elgin, Naperville, Wheaton, Downers Grove, Lombard, Carol Stream,
Evanston, Des Plaines, Schaumburg, Palatine, Northbrook, Chicago,
Cicero, Oak Lawn, Oak Park, and La Grange
556 AM CST Thu Dec 16 2021

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 9 AM CST THIS
MORNING...

* WHAT...Southwest to west winds 20 to 25 mph with gusts up to 45
  to 50 mph.

* WHERE...Lake IL, McHenry, Northern Cook, Central Cook, Kane 
  and DuPage Counties.

* WHEN...Until 9 AM CST this morning.

* IMPACTS...Winds may be strong enough to still down branches and
  some power lines. Additional scattered power outages are
  possible. Travel will be difficult, especially for high profile
  vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People should avoid being outside in forested areas and around
trees and branches. If possible, remain in the lower levels of
your home during the windstorm, and avoid windows. Use caution if
you must drive.

&&

$$
999 
WWUS73 KLOT 161443
NPWLOT

URGENT - WEATHER MESSAGE
National Weather Service Chicago IL
843 AM CST Thu Dec 16 2021

ILZ005-006-012-013-103-104-161545-
/O.EXP.KLOT.HW.W.0001.000000T0000Z-211216T1500Z/
McHenry-Lake IL-Kane-DuPage-Northern Cook-Central Cook-
Including the cities of Crystal Lake, Algonquin, McHenry, 
Woodstock, Waukegan, Buffalo Grove, Mundelein, Gurnee, Aurora, 
Elgin, Naperville, Wheaton, Downers Grove, Lombard, Carol Stream,
Evanston, Des Plaines, Schaumburg, Palatine, Northbrook, Chicago,
Cicero, Oak Lawn, Oak Park, and La Grange
843 AM CST Thu Dec 16 2021

...HIGH WIND WARNING WILL EXPIRE AT 9 AM CST THIS MORNING...

Winds will remain gusty up to 35 to 40 mph into this afternoon,
but the threat for damaging wind gusts has ended.

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 14, 9:14 PM CSTStorm WatchLOT7 hr
Dec 15, 3:51 AM CSTGale WarningLOT18 hr
Dec 15, 3:51 AM CSTStorm WarningLOT29 hr

Nearby

High Wind Warnings in Illinois, 2021High Wind Warnings in Indiana, 2021Every high wind 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.