Alert archive / Illinois / Wind Advisories in 2021

Wind Advisory 2, NWS Chicago, IL

March 10, 202118 counties in Illinois; 5 counties in Indiana

NWS Chicago, IL issued this wind advisory at Mar 10, 2021, 3:25 AM CST for 18 counties in Illinois; 5 counties in Indiana. It took effect at Mar 10, 2021, 11:00 AM CST. It was in force for 15 hr.

The area

The counties it named.

The facts

Issued
Mar 10, 2021, 3:25 AM CST (09:25 UTC)
In effect from
Mar 10, 2021, 11:00 AM CST
Expired
Mar 11, 2021, 2:00 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 09:29 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 00:00Z, 9.4 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 2021-03-10Temperature 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 2021-03-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 112 square meters per square second.193958Sfc1 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
1769 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
112 m²/s²
0-3 km storm-relative helicity
319 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

105 
WWUS73 KLOT 100925
NPWLOT

URGENT - WEATHER MESSAGE
National Weather Service Chicago IL
325 AM CST Wed Mar 10 2021

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-101730-
/O.NEW.KLOT.WI.Y.0002.210310T1700Z-210311T0600Z/
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
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,
Kankakee, Bourbonnais, Bradley, Pontiac, Dwight, Fairbury, 
Watseka, Gilman, Paxton, Gibson City, 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, DeMotte, 
Fowler, and Oxford
325 AM CST Wed Mar 10 2021 /425 AM EST Wed Mar 10 2021/

...WIND ADVISORY IN EFFECT FROM 11 AM CST /NOON EST/ THIS MORNING
TO MIDNIGHT CST /1 AM EST/ TONIGHT...

* WHAT...South winds 25 to 30 mph with gusts up to 45 to 50 mph 
  expected. 

* WHERE...All of northern Illinois and northwest Indiana.

* WHEN...From 11 AM CST /noon EST/ this morning to midnight CST 
  /1 AM EST/ tonight. The strongest winds are expected after 1 PM. 

* IMPACTS...Gusty winds could blow around any objects that are
  not adequately secured, including tent structures. Tree limbs 
  could be blown down and a few power outages may result. Travel
  will be difficult for high profile vehicles, especially on west
  to east roads.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

Castro/MTF
5 follow-up statements
235 
WWUS73 KLOT 101555
NPWLOT

URGENT - WEATHER MESSAGE
National Weather Service Chicago IL
955 AM CST Wed Mar 10 2021

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-110000-
/O.CON.KLOT.WI.Y.0002.210310T1700Z-210311T0600Z/
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
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,
Kankakee, Bourbonnais, Bradley, Pontiac, Dwight, Fairbury, 
Watseka, Gilman, Paxton, Gibson City, 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, DeMotte, 
Fowler, and Oxford
955 AM CST Wed Mar 10 2021 /1055 AM EST Wed Mar 10 2021/

...WIND ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST /1 AM EST/
TONIGHT...

* WHAT...South winds 25 to 30 mph with gusts up to 45 to 50 mph 
  expected.

* WHERE...All of northern Illinois and northwest Indiana.

* WHEN...From 11 AM CST /noon EST/ this morning to midnight CST /1
  AM EST/ tonight. The strongest winds are expected after 1 PM and
  into the evening hours. 

* IMPACTS...Gusty winds could blow around any objects that are 
  not adequately secured, including tent structures. Tree limbs 
  could be blown down and a few power outages may result. Travel 
  will be difficult for high profile vehicles, especially on 
  west to east roads.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

Carlaw
892 
WWUS73 KLOT 102054
NPWLOT

URGENT - WEATHER MESSAGE
National Weather Service Chicago IL
254 PM CST Wed Mar 10 2021

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-110500-
/O.CON.KLOT.WI.Y.0002.000000T0000Z-210311T0600Z/
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
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,
Kankakee, Bourbonnais, Bradley, Pontiac, Dwight, Fairbury, 
Watseka, Gilman, Paxton, Gibson City, 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, DeMotte, 
Fowler, and Oxford
254 PM CST Wed Mar 10 2021 /354 PM EST Wed Mar 10 2021/

...WIND ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST /1 AM EST/
TONIGHT...

* WHAT...South winds 25 to 30 mph with gusts of 45 to 50 mph 
  expected. A few gusts as high as 55 mph are possible this 
  evening, mainly east of I-55. 

* WHERE...All of northern Illinois and northwest Indiana.

* WHEN...Until midnight CST /1 AM EST/ tonight.

* IMPACTS...Gusty winds could blow around any objects that are 
  not adequately secured, including tent structures. Tree limbs 
  could be blown down and a few power outages may result. Travel 
  will be difficult for high profile vehicles, especially on 
  west to east roads.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

Carlaw
387 
WWUS73 KLOT 110400
NPWLOT

URGENT - WEATHER MESSAGE
National Weather Service Chicago IL
1000 PM CST Wed Mar 10 2021

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-110600-
/O.CON.KLOT.WI.Y.0002.000000T0000Z-210311T0600Z/
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
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,
Kankakee, Bourbonnais, Bradley, Pontiac, Dwight, Fairbury, 
Watseka, Gilman, Paxton, Gibson City, 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, DeMotte, 
Fowler, and Oxford
1000 PM CST Wed Mar 10 2021 /1100 PM EST Wed Mar 10 2021/

...WIND ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST /1 AM EST/
TONIGHT...

* WHAT...South winds 20 to 30 mph with gusts of 45 to 50 mph 
  expected. A few gusts as high as 55 mph are still possible this 
  evening.

* WHERE...All of northern Illinois and northwest Indiana.

* WHEN...Until midnight CST /1 AM EST/ tonight.

* IMPACTS...Gusty winds could blow around any objects that are 
  not adequately secured, including tent structures. Tree limbs 
  could be blown down and a few power outages may result. Travel 
  will be difficult for high profile vehicles, especially on 
  west to east roads.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
640 
WWUS73 KLOT 110541
NPWLOT

URGENT - WEATHER MESSAGE
National Weather Service Chicago IL
1141 PM CST Wed Mar 10 2021

ILZ003-008-010-110645-
/O.EXP.KLOT.WI.Y.0002.000000T0000Z-210311T0600Z/
Winnebago-Ogle-Lee-
Including the cities of Rockford, Rochelle, Oregon, Byron, 
and Dixon
1141 PM CST Wed Mar 10 2021

...WIND ADVISORY WILL EXPIRE AT MIDNIGHT CST TONIGHT...

Wind gusts have eased below 45 mph across Lee, Ogle, and Winnebago
Counties, though still some higher gusts with showers could occur
through 1 A.M.

$$

ILZ004>006-011>013-019>021-023-032-033-039-103>108-INZ001-002-010-
011-019-110800-
/O.EXT.KLOT.WI.Y.0002.000000T0000Z-210311T0800Z/
Boone-McHenry-Lake IL-De Kalb-Kane-DuPage-La Salle-Kendall-Grundy-
Kankakee-Livingston-Iroquois-Ford-Northern Cook-Central Cook-
Southern Cook-Northern Will-Southern Will-Eastern Will-Lake IN-
Porter-Newton-Jasper-Benton-
Including the cities of Belvidere, Crystal Lake, Algonquin, 
McHenry, Woodstock, Waukegan, Buffalo Grove, Mundelein, Gurnee, 
DeKalb, Sycamore, Aurora, Elgin, Naperville, Wheaton, 
Downers Grove, Lombard, Carol Stream, Ottawa, Streator, La Salle,
Mendota, Marseilles, Oswego, Yorkville, Plano, Morris, Coal City,
Minooka, Kankakee, Bourbonnais, Bradley, Pontiac, Dwight, 
Fairbury, Watseka, Gilman, Paxton, Gibson City, 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, DeMotte, 
Fowler, and Oxford
1141 PM CST Wed Mar 10 2021 /1241 AM EST Thu Mar 11 2021/

...WIND ADVISORY NOW IN EFFECT UNTIL 2 AM CST /3 AM EST/
THURSDAY...

* WHAT...Southwest winds 20 to 30 mph with gusts of 40 to 50 mph.
  A few gusts as high as 55 mph have been observed and remain
  possible.

* WHERE...All of northern Illinois and northwest Indiana.

* WHEN...Until 2 AM CST /3 AM EST/ Thursday.

* IMPACTS...Gusty winds could blow around any objects that are not
  adequately secured, including tent structures. Tree limbs could
  be blown down and a few power outages may result. Travel will be
  difficult for high profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

MTF
856 
WWUS73 KLOT 110800
NPWLOT

URGENT - WEATHER MESSAGE
National Weather Service Chicago IL
200 AM CST Thu Mar 11 2021

ILZ004>006-011>013-019>021-023-032-033-039-103>108-INZ001-002-010-
011-019-110900-
/O.EXP.KLOT.WI.Y.0002.000000T0000Z-210311T0800Z/
Boone-McHenry-Lake IL-De Kalb-Kane-DuPage-La Salle-Kendall-Grundy-
Kankakee-Livingston-Iroquois-Ford-Northern Cook-Central Cook-
Southern Cook-Northern Will-Southern Will-Eastern Will-Lake IN-
Porter-Newton-Jasper-Benton-
Including the cities of Belvidere, Crystal Lake, Algonquin, 
McHenry, Woodstock, Waukegan, Buffalo Grove, Mundelein, Gurnee, 
DeKalb, Sycamore, Aurora, Elgin, Naperville, Wheaton, 
Downers Grove, Lombard, Carol Stream, Ottawa, Streator, La Salle,
Mendota, Marseilles, Oswego, Yorkville, Plano, Morris, Coal City,
Minooka, Kankakee, Bourbonnais, Bradley, Pontiac, Dwight, 
Fairbury, Watseka, Gilman, Paxton, Gibson City, 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, DeMotte, 
Fowler, and Oxford
200 AM CST Thu Mar 11 2021 /300 AM EST Thu Mar 11 2021/

...WIND ADVISORY HAS EXPIRED...

The winds will continue to gradually ease through daybreak across
the area. Some gusts as high as 40 mph remain possible.

$$

MTF

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.