Alert archive / Illinois / Wind Advisories in 2021

Wind Advisory 10, NWS Chicago, IL

December 14, 20217 counties in Illinois; 5 counties in Indiana

NWS Chicago, IL issued this wind advisory at Dec 14, 2021, 2:25 PM CST for 7 counties in Illinois; 5 counties in Indiana. It took effect at Dec 15, 2021, 6:00 PM CST. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued
Dec 14, 2021, 2:25 PM CST (20:25 UTC)
In effect from
Dec 15, 2021, 6:00 PM CST
Expired
Dec 15, 2021, 8:23 PM CST
In force
2 hr
Issued by
NWS Chicago, IL

Counties Cook County, IL, Ford County, IL, Grundy County, IL, Iroquois County, IL, Kankakee County, IL, Livingston County, IL, Will County, IL, Benton County, IN, Jasper County, IN, Lake County, IN, Newton County, IN, Porter County, IN

The radar

The Chicago radar (KLOT), 60 km from the middle of the area, began a volume at 20:25 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, 8.4 hours before the alert went out and 131 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 12:00Z on 2021-12-14Temperature 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 12:00Z on 2021-12-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 92 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
1771 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
92 m²/s²
0-3 km storm-relative helicity
195 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

102 
WWUS73 KLOT 142025
NPWLOT

URGENT - WEATHER MESSAGE
National Weather Service Chicago IL
225 PM CST Tue Dec 14 2021

ILZ023-032-033-039-150430-
/O.NEW.KLOT.WI.Y.0010.211216T0000Z-211216T1200Z/
Kankakee-Livingston-Iroquois-Ford-
Including the cities of Kankakee, Bourbonnais, Bradley, Pontiac, 
Dwight, Fairbury, Watseka, Gilman, Paxton, and Gibson City
225 PM CST Tue Dec 14 2021

...WIND ADVISORY IN EFFECT FROM 6 PM WEDNESDAY TO 6 AM CST
THURSDAY...

* WHAT...Southwest winds 20 to 30 mph with gusts up to 50 mph 
  expected.

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

* WHEN...From 6 PM Wednesday to 6 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.

&&

$$

ILZ005-006-012-013-019>021-103>108-150430-
/O.EXA.KLOT.HW.A.0001.211216T0000Z-211216T1200Z/
McHenry-Lake IL-Kane-DuPage-La Salle-Kendall-Grundy-Northern Cook-
Central Cook-Southern Cook-Northern Will-Southern Will-
Eastern Will-
Including the cities of Crystal Lake, Algonquin, McHenry, 
Woodstock, Waukegan, Buffalo Grove, Mundelein, Gurnee, Aurora, 
Elgin, Naperville, Wheaton, Downers Grove, Lombard, Carol Stream,
Ottawa, Streator, La Salle, Mendota, Marseilles, Oswego, 
Yorkville, Plano, Morris, Coal City, Minooka, 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, 
and Beecher
225 PM CST Tue Dec 14 2021

...HIGH WIND WATCH IN EFFECT FROM WEDNESDAY EVENING THROUGH LATE
WEDNESDAY NIGHT...

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

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

* WHEN...From Wednesday evening through late Wednesday night.

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

* ADDITIONAL DETAILS...Use caution when driving in high winds.
  Secure any outdoor furniture and decorations, including holiday
  decorations, or bring them inside until winds have subsided.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts and warnings for updates on this
situation. Fasten loose objects or shelter objects in a safe
location prior to the onset of winds.

&&

$$

ILZ003-004-008-010-011-150430-
/O.CON.KLOT.HW.A.0001.211216T0000Z-211216T1200Z/
Winnebago-Boone-Ogle-Lee-De Kalb-
Including the cities of Rockford, Belvidere, Rochelle, Oregon, 
Byron, Dixon, DeKalb, and Sycamore
225 PM CST Tue Dec 14 2021

...HIGH WIND WATCH REMAINS IN EFFECT FROM WEDNESDAY EVENING
THROUGH LATE WEDNESDAY NIGHT...

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

* WHERE...Winnebago, Boone, Ogle, Lee and De Kalb Counties.

* WHEN...From Wednesday evening through late Wednesday night.

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

* ADDITIONAL DETAILS...Use caution when driving in high winds.
  Secure any outdoor furniture and decorations, including holiday
  decorations, or bring them inside until winds have subsided.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts and warnings for updates on this
situation. Fasten loose objects or shelter objects in a safe
location prior to the onset of winds.

&&

$$
5 follow-up statements
835 
WWUS73 KLOT 150309
NPWLOT

URGENT - WEATHER MESSAGE
National Weather Service Chicago IL
909 PM CST Tue Dec 14 2021

ILZ023-032-033-039-151115-
/O.CON.KLOT.WI.Y.0010.211216T0000Z-211216T1200Z/
Kankakee-Livingston-Iroquois-Ford-
Including the cities of Kankakee, Bourbonnais, Bradley, Pontiac, 
Dwight, Fairbury, Watseka, Gilman, Paxton, and Gibson City
909 PM CST Tue Dec 14 2021

...WIND ADVISORY REMAINS IN EFFECT FROM 6 PM WEDNESDAY TO 6 AM
CST THURSDAY...

* WHAT...Southwest winds 20 to 30 mph with gusts up to 50 mph 
  expected.

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

* WHEN...From 6 PM Wednesday to 6 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.

&&

$$

ILZ003>006-008-010>013-019>021-103>108-151115-
/O.CON.KLOT.HW.A.0001.211216T0000Z-211216T1200Z/
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Northern Cook-Central Cook-Southern Cook-
Northern Will-Southern Will-Eastern Will-
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, Morris, Coal City, Minooka,
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, and Beecher
909 PM CST Tue Dec 14 2021

...HIGH WIND WATCH REMAINS IN EFFECT FROM WEDNESDAY EVENING
THROUGH LATE WEDNESDAY NIGHT...

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

* WHERE...Winnebago, Boone, Ogle, Lee and De Kalb Counties.

* WHEN...From Wednesday evening through late Wednesday night.

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

* ADDITIONAL DETAILS...Use caution when driving in high winds. 
  Secure any outdoor furniture and decorations, including 
  holiday decorations, or bring them inside until winds have 
  subsided.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts and warnings for updates on this
situation. Fasten loose objects or shelter objects in a safe
location prior to the onset of winds.

&&

$$
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.

&&

$$
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

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 14, 3:19 AM CSTHigh Wind WatchLOTBoone, Cook, DeKalb, DuPage, Grundy, Kane and 8 more24 hr
Dec 14, 2:50 PM CSTSmall Craft AdvisoryLOT27 hr

Nearby

Wind Advisories in Illinois, 2021Wind Advisories in Indiana, 2021Every wind advisory 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.