Alert archive / Illinois / Winter Storm Warnings in 2021

Winter Storm Warning 1, NWS Chicago, IL

January 24, 202114 counties in Illinois

NWS Chicago, IL issued this winter storm warning at Jan 24, 2021, 2:55 PM CST for 14 counties in Illinois. It took effect at Jan 25, 2021, 1:00 PM CST. It was in force for 26 hr. 60 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
Jan 24, 2021, 2:55 PM CST (20:55 UTC)
In effect from
Jan 25, 2021, 1:00 PM CST
Expired
Jan 26, 2021, 3:13 PM CST
In force
26 hr
Issued by
NWS Chicago, IL

Counties Boone County, IL, Cook County, IL, DeKalb County, IL, DuPage County, IL, Grundy County, IL, Kane County, IL, Kendall County, IL, Lake County, IL, LaSalle County, IL, Lee County, IL, McHenry County, IL, Ogle County, IL, Will County, IL, Winnebago County, IL

The radar

The Chicago radar (KLOT), 49 km from the middle of the area, began a volume at 21:01 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
Jan 25, 8:45 PM CSTSNOW 1.6Somonauk, IL
Jan 25, 8:45 PM CSTSNOW 1.6Somonauk, IL
Jan 25, 9:30 PM CSTSNOW 1.34 Nnw Plainfield, IL0.12 INCH LIQUID EQUIVALENT.
Jan 25, 9:40 PM CSTSNOW 1.4St. Charles, IL
Jan 25, 10:00 PM CSTSNOW 1.5Oak Lawn, IL
Jan 26, 12:00 AM CSTSNOW 0.7Ohare Airport, ILTOTAL BETWEEN 6PM AND 12AM.
Jan 26, 12:00 AM CSTSNOW 1Rockford Airport, ILSNOW TOTAL BETWEEN 6PM AND 12AM.
Jan 26, 12:00 AM CSTSNOW 1.2Romeoville, ILEVENT TOTAL SO FAR AT NWS CHICAGO. 1.1 INCHES BETWEEN 6PM AND 12AM. 0.19 INCHES LIQUID EQUIVALENT FOR THE DAY.
Jan 26, 12:00 AM CSTSNOW 1.53 Sw Midway Airport, ILEVENT TOTAL SO FAR. 1.4 INCHES BETWEEN 6PM AND 12AM. 0.10 INCHES LIQUID EQUIVALENT FOR THE DAY.
Jan 26, 12:30 AM CSTSNOW 2N Capron, ILEVENT TOTAL SINCE 7PM MONDAY.
Jan 26, 12:45 AM CSTSNOW 2.5Palatine, IL
Jan 26, 1:00 AM CSTSNOW 31 N Roselle, IL
Jan 26, 2:00 AM CSTSNOW 1.42 W Joliet, IL
Jan 26, 2:15 AM CSTSNOW 4.92 Nw De Kalb, IL
Jan 26, 2:45 AM CSTSNOW 2.93 Sse Naperville, IL
Jan 26, 3:00 AM CSTSNOW 0.6Peotone, IL0.03 INCH OF ICE IN ADDITION TO SNOW.
Jan 26, 4:30 AM CSTSNOW 3.51 Ne Somonauk, ILLIQUID EQUIVALENT OF 0.21 INCHES.
Jan 26, 4:30 AM CSTSNOW 3.71 W Schaumburg, IL
Jan 26, 5:00 AM CSTSNOW 3.95 N Batavia, ILEVENT TOTAL
Jan 26, 5:30 AM CSTSNOW 3.81 Ssw Medinah, ILSNOW DEPTH OF 7 INCHES.
Jan 26, 6:00 AM CSTSNOW 1.96 Ssw Rockford, IL
Jan 26, 6:00 AM CSTSNOW 2Marseilles, IL
Jan 26, 6:00 AM CSTSNOW 2.13 Wnw Lockport, ILEVENT TOTAL.
Jan 26, 6:00 AM CSTSNOW 32 Se Mendota, IL
Jan 26, 6:00 AM CSTSNOW 3.1Ohare Airport, ILEVENT TOTAL
Jan 26, 6:00 AM CSTSNOW 3.51 Ene Countryside, IL
Jan 26, 6:00 AM CSTSNOW 4Downers Grove, ILRELAYED VIA BROADCAST MEDIA
Jan 26, 6:00 AM CSTSNOW 4Downers Grove, ILRELAYED VIA BROADCAST MEDIA.
Jan 26, 6:00 AM CSTSNOW 4Glenview, ILEVENT TOTAL
Jan 26, 6:00 AM CSTSNOW 51 S Oak Park, IL.57 INCH LIQUID EQUIVALENT
Jan 26, 6:14 AM CSTSNOW 2.41 Nw Ottawa, IL
Jan 26, 6:30 AM CSTSNOW 3.2Ssw Cortland, ILLIQUID WATER EQUIVALENT OF 0.39 INCHES
Jan 26, 6:30 AM CSTSNOW 3.2Ssw Cortland, ILLIQUID WATER EQUIVALENT OF 0.39 INCHES.
Jan 26, 6:30 AM CSTSNOW 3.6Batavia, IL0.27 INCH LIQUID EQUIVALENT
Jan 26, 6:45 AM CSTSNOW 1.8Mokena, IL
Jan 26, 6:45 AM CSTSNOW 3.51 Ne North Aurora, ILLIQUID EQUIVALENT OF 0.36 INCHES
Jan 26, 6:45 AM CSTSNOW 3.51 Ne North Aurora, ILLIQUID EQUIVALENT OF 0.36 INCHES.
Jan 26, 6:50 AM CSTSNOW 3.52 Wsw Elk Grove Village, IL
Jan 26, 6:50 AM CSTSNOW 3.52 Wsw Elk Grove Village, IL
Jan 26, 7:00 AM CSTFREEZING RAIN 0.13 N Carbon Hill, IL
Jan 26, 7:00 AM CSTSNOW 1.5Park Forest, IL
Jan 26, 7:00 AM CSTSNOW 2Homewood, IL
Jan 26, 7:00 AM CSTSNOW 2.11 Ene Peru, IL
Jan 26, 7:00 AM CSTSNOW 2.1Joliet, IL
Jan 26, 7:00 AM CSTSNOW 2.5Harvard, IL
Jan 26, 7:00 AM CSTSNOW 31 Sw Palos Park, IL
Jan 26, 7:00 AM CSTSNOW 3Hebron, IL
Jan 26, 7:00 AM CSTSNOW 3.22 Ssw Oswego, IL
Jan 26, 7:00 AM CSTSNOW 3.31 Nnw Marengo, IL
Jan 26, 7:00 AM CSTSNOW 3.3Cary, IL
Jan 26, 7:00 AM CSTSNOW 3.52 E Lincolnwood, IL
Jan 26, 7:00 AM CSTSNOW 3.53 W Elgin, IL
Jan 26, 7:00 AM CSTSNOW 3.5N Capron, IL
Jan 26, 7:00 AM CSTSNOW 3.71 Ese Elmhurst, IL
Jan 26, 7:00 AM CSTSNOW 3.72 Wnw Loves Park, IL
Jan 26, 7:00 AM CSTSNOW 3.74 Wsw Mundelein, IL
Jan 26, 7:00 AM CSTSNOW 3.8Batavia, IL
Jan 26, 7:00 AM CSTSNOW 43 Nne West Chicago, IL
Jan 26, 7:00 AM CSTSNOW 4Aurora, IL
Jan 26, 7:00 AM CSTSNOW 4Ene Riverwoods, IL

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, 8.9 hours before the alert went out and 165 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, Davenport, at 12:00Z on 2021-01-24Temperature 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°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Davenport, at 12:00Z on 2021-01-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 180 square meters per square second.1939587897117136Sfc1 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
673 m above ground
0-6 km bulk shear
71 kt
0-1 km storm-relative helicity
180 m²/s²
0-3 km storm-relative helicity
279 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

453 
WWUS43 KLOT 242055
WSWLOT

URGENT - WINTER WEATHER MESSAGE
National Weather Service Chicago IL
255 PM CST Sun Jan 24 2021

...Winter Storm to Impact the Region Beginning Monday 
Afternoon...

ILZ008-010>012-019>021-250500-
/O.UPG.KLOT.WS.A.0001.210125T1800Z-210126T1800Z/
/O.NEW.KLOT.WS.W.0001.210125T1900Z-210126T1800Z/
Ogle-Lee-De Kalb-Kane-La Salle-Kendall-Grundy-
Including the cities of Rochelle, Oregon, Byron, Dixon, DeKalb, 
Sycamore, Aurora, Elgin, Ottawa, Streator, La Salle, Mendota, 
Marseilles, Oswego, Yorkville, Plano, Morris, Coal City, 
and Minooka
255 PM CST Sun Jan 24 2021

...WINTER STORM WARNING IN EFFECT FROM 1 PM MONDAY TO NOON CST
TUESDAY...

* WHAT...Snow, heavy at times, especially Monday evening. Total
  snow accumulations of 5 to 8 inches. Isolated higher amounts
  possible. Northeast winds gusting as high as 35 mph resulting 
  in periods of very low visibility.

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

* WHEN...From Monday afternoon through Tuesday morning.

* IMPACTS...Travel could be very difficult. Hazardous conditions
  are likely to impact the Monday evening and Tuesday morning 
  commutes.

* ADDITIONAL DETAILS...Some power outages are possible due to the
  combined effects of the expected wetter nature of the snow and
  strong and gusty winds. Freezing rain and freezing drizzle, or
  sleet, may mix in with the snow at times, mainly later Monday
  night for locations south of I-88.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for Illinois can be obtained on the
internet at www.gettingaroundillinois.com.

&&

$$

ILZ003>005-250500-
/O.UPG.KLOT.WS.A.0001.210125T2200Z-210126T1800Z/
/O.NEW.KLOT.WS.W.0001.210125T2200Z-210126T1800Z/
Winnebago-Boone-McHenry-
Including the cities of Rockford, Belvidere, Crystal Lake, 
Algonquin, McHenry, and Woodstock
255 PM CST Sun Jan 24 2021

...WINTER STORM WARNING IN EFFECT FROM 4 PM MONDAY TO NOON CST
TUESDAY...

* WHAT...Snow, heavy at times, especially Monday evening and
  overnight. Total snow accumulations of 5 to 7 inches. Northeast
  winds gusting as high as 35 mph resulting in periods of very 
  low visibility.

* WHERE...Winnebago, Boone and McHenry Counties.

* WHEN...From late Monday afternoon through Tuesday morning.

* IMPACTS...Travel could be very difficult. Hazardous conditions
  are likely to impact the Monday evening and Tuesday morning 
  commutes.

* ADDITIONAL DETAILS...Some power outages are possible due to 
  the combined effects of the expected wetter nature of the snow 
  and strong and gusty winds.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for Illinois can be obtained on the
internet at www.gettingaroundillinois.com.

&&

$$

ILZ006-013-103>107-250500-
/O.UPG.KLOT.WS.A.0001.210125T2200Z-210126T2300Z/
/O.NEW.KLOT.WS.W.0001.210125T2200Z-210126T2300Z/
Lake IL-DuPage-Northern Cook-Central Cook-Southern Cook-
Northern Will-Southern Will-
Including the cities of Waukegan, Buffalo Grove, Mundelein, 
Gurnee, Naperville, Wheaton, Downers Grove, Lombard, 
Carol Stream, 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, 
and Wilmington
255 PM CST Sun Jan 24 2021

...WINTER STORM WARNING IN EFFECT FROM 4 PM MONDAY TO 5 PM CST
TUESDAY...

* WHAT...Snow, heavy at times, especially Monday evening and early
  overnight. Total snow accumulations of 5 to 8 inches. Isolated
  higher amounts possible. Northeast winds could gust as high as 
  35 to 40 mph resulting in periods of very low visibility.

* WHERE...Portions of northeast Illinois.

* WHEN...From late Monday afternoon through the day Tuesday.

* IMPACTS...Travel could be very difficult. Hazardous conditions
  are likely to impact the Monday evening and Tuesday morning 
  commutes.

* ADDITIONAL DETAILS...Some power outages are possible due to the
  combined effects of the expected wetter nature of the snow and
  strong and gusty winds. Freezing rain, freezing drizzle, or
  sleet may mix in with the snow at times, mainly Monday evening
  for locations south of I-88.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for Illinois can be obtained on the
internet at www.gettingaroundillinois.com.

&&

$$

ILZ108-INZ001-250500-
/O.UPG.KLOT.WS.A.0001.210125T2200Z-210126T2300Z/
/O.NEW.KLOT.WW.Y.0001.210125T2200Z-210126T1800Z/
Eastern Will-Lake IN-
Including the cities of Crete, Peotone, Beecher, Gary, Hammond, 
and Merrillville
255 PM CST Sun Jan 24 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 4 PM MONDAY TO NOON CST
TUESDAY...

* WHAT...Snow expected, which will likely be heavy for a period
  Monday evening. Total snow accumulations of 3 to 6 inches. Winds
  gusting as high as 35 mph which will likely result in periods of
  low visibility.

* WHERE...In Indiana, Lake IN County. In Illinois, Eastern Will 
  County.

* WHEN...From late Monday afternoon through Tuesday morning.

* IMPACTS...Plan on slippery road conditions. The hazardous
  conditions are likely to impact the Monday evening commute and
  may impact the Tuesday morning commute.

* ADDITIONAL DETAILS...Freezing rain, freezing drizzle, or sleet
  may mix in with the snow at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

In Illinois, the latest road conditions for Illinois can be
obtained on the internet at www.gettingaroundillinois.com. In
Indiana, the latest road conditions for Indiana are available by
calling 1-800-261-7623.

&&

$$

ILZ023-032-033-039-INZ010-011-019-250500-
/O.NEW.KLOT.WW.Y.0001.210125T1900Z-210126T1800Z/
Kankakee-Livingston-Iroquois-Ford-Newton-Jasper-Benton-
Including the cities of Kankakee, Bourbonnais, Bradley, Pontiac, 
Dwight, Fairbury, Watseka, Gilman, Paxton, Gibson City, Roselawn,
Kentland, Morocco, Rensselaer, DeMotte, Fowler, and Oxford
255 PM CST Sun Jan 24 2021 /355 PM EST Sun Jan 24 2021/

...WINTER WEATHER ADVISORY IN EFFECT FROM 1 PM CST /2 PM EST/
MONDAY TO NOON CST /1 PM EST/ TUESDAY...

* WHAT...Mixed precipitation expected. Total snow accumulations 
  of 1 to 4 inches and ice accumulations of around one tenth of 
  an inch. Winds gusting as high as 35 mph.

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

* WHEN...From Monday afternoon through the day Tuesday.

* IMPACTS...Plan on slippery road conditions. The hazardous
  conditions are likely to impact the Monday evening commute and
  may impact the Tuesday morning commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

In Illinois, the latest road conditions for Illinois can be
obtained on the internet at www.gettingaroundillinois.com. In
Indiana, the latest road conditions for Indiana are available by
calling 1-800-261-7623.

&&

$$

INZ002-250500-
/O.NEW.KLOT.WW.Y.0001.210125T2200Z-210126T1800Z/
Porter-
Including the cities of Portage, Valparaiso, and Chesterton
255 PM CST Sun Jan 24 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 4 PM MONDAY TO NOON CST
TUESDAY...

* WHAT...Snow expected, which will likely be heavy for a period
  Monday evening. Total snow accumulations of 3 to 6 inches. Winds
  gusting as high as 35 mph which will likely result in periods of
  low visibility.

* WHERE...In Indiana, Lake IN County. In Illinois, Eastern Will 
  County.

* WHEN...From late Monday afternoon through Tuesday morning.

* IMPACTS...Plan on slippery road conditions. The hazardous
  conditions are likely to impact the Monday evening commute and
  may impact the Tuesday morning commute.

* ADDITIONAL DETAILS...Freezing rain, freezing drizzle, or sleet
  may mix in with the snow at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for Indiana are available by calling 1-
800-261-7623.

&&

$$

MTF
9 follow-up statements
799 
WWUS43 KLOT 250343
WSWLOT

URGENT - WINTER WEATHER MESSAGE
National Weather Service Chicago IL
943 PM CST Sun Jan 24 2021

...Winter Storm to Impact the Region Beginning Monday Afternoon...

ILZ008-010>012-019>021-251145-
/O.CON.KLOT.WS.W.0001.210125T1900Z-210126T1800Z/
Ogle-Lee-De Kalb-Kane-La Salle-Kendall-Grundy-
Including the cities of Rochelle, Oregon, Byron, Dixon, DeKalb, 
Sycamore, Aurora, Elgin, Ottawa, Streator, La Salle, Mendota, 
Marseilles, Oswego, Yorkville, Plano, Morris, Coal City, 
and Minooka
943 PM CST Sun Jan 24 2021

...WINTER STORM WARNING REMAINS IN EFFECT FROM 1 PM MONDAY TO
NOON CST TUESDAY...

* WHAT...Snow expected, moderate to heavy at times, especially
  Monday evening. Total snow accumulations of 4 to 7 inches. 
  Northeast winds gusting as high as 35 mph resulting in periods 
  of very low visibility.

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

* WHEN...From 1 PM Monday to noon CST Tuesday.

* IMPACTS...Travel could be difficult. Hazardous conditions are 
  likely to impact the Monday evening and Tuesday morning 
  commutes.

* ADDITIONAL DETAILS...Some power outages are possible due to the
  combined effects of the expected wetter nature of the snow and
  strong and gusty winds. Freezing rain and freezing drizzle may 
  mix in with the snow at times, mainly later Monday night for 
  locations south of I-88.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for Illinois can be obtained on the
internet at www.gettingaroundillinois.com.

&&

$$

ILZ003>005-251145-
/O.CON.KLOT.WS.W.0001.210125T2200Z-210126T1800Z/
Winnebago-Boone-McHenry-
Including the cities of Rockford, Belvidere, Crystal Lake, 
Algonquin, McHenry, and Woodstock
943 PM CST Sun Jan 24 2021

...WINTER STORM WARNING REMAINS IN EFFECT FROM 4 PM MONDAY TO
NOON CST TUESDAY...

* WHAT...Snow expected, moderate to heavy at times, especially
  Monday evening and overnight. Total snow accumulations of 4 to 
  7 inches. Northeast winds gusting as high as 35 mph resulting in
  periods of very low visibility.

* WHERE...Winnebago, McHenry and Boone Counties.

* WHEN...From 4 PM Monday to noon CST Tuesday.

* IMPACTS...Travel could be difficult. Hazardous conditions are 
  likely to impact the Monday evening and Tuesday morning 
  commutes.

* ADDITIONAL DETAILS...Some power outages are possible due to 
  the combined effects of the expected wetter nature of the snow 
  and strong and gusty winds.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for Illinois can be obtained on the
internet at www.gettingaroundillinois.com.

&&

$$

ILZ006-013-103>107-251145-
/O.CON.KLOT.WS.W.0001.210125T2200Z-210126T2300Z/
Lake IL-DuPage-Northern Cook-Central Cook-Southern Cook-
Northern Will-Southern Will-
Including the cities of Waukegan, Buffalo Grove, Mundelein, 
Gurnee, Naperville, Wheaton, Downers Grove, Lombard, 
Carol Stream, 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, 
and Wilmington
943 PM CST Sun Jan 24 2021

...WINTER STORM WARNING REMAINS IN EFFECT FROM 4 PM MONDAY TO
5 PM CST TUESDAY...

* WHAT...Snow expected, moderate to heavy at times, especially
  Monday evening and early overnight. Total snow accumulations of
  5 to 8 inches. Northeast winds could gust as high as 35 to 40 
  mph resulting in periods of very low visibility.

* WHERE...Portions of northeast Illinois.

* WHEN...From 4 PM Monday to 5 PM CST Tuesday.

* IMPACTS...Travel could be difficult. Hazardous conditions are 
  likely to impact the Monday evening and Tuesday morning 
  commutes.

* ADDITIONAL DETAILS...Some power outages are possible due to 
  the combined effects of the expected wetter nature of the snow 
  and strong and gusty winds. Freezing rain, freezing drizzle, 
  or sleet may mix in with the snow at times, mainly Monday 
  evening for locations south of I-88.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for Illinois can be obtained on the
internet at www.gettingaroundillinois.com.

&&

$$

ILZ023-032-033-039-INZ010-011-019-251145-
/O.CON.KLOT.WW.Y.0001.210125T1900Z-210126T1800Z/
Kankakee-Livingston-Iroquois-Ford-Newton-Jasper-Benton-
Including the cities of Kankakee, Bourbonnais, Bradley, Pontiac, 
Dwight, Fairbury, Watseka, Gilman, Paxton, Gibson City, Roselawn,
Kentland, Morocco, Rensselaer, DeMotte, Fowler, and Oxford
943 PM CST Sun Jan 24 2021 /1043 PM EST Sun Jan 24 2021/

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 1 PM CST /2 PM
EST/ MONDAY TO NOON CST /1 PM EST/ TUESDAY...

* WHAT...Mixed precipitation expected. Total snow accumulations of
  1 to 4 inches, highest near and north of the Kankakee River. Ice
  accumulations of up to one tenth of an inch, with locally up to
  two tenths of an inch near and south of US-25. Winds gusting as
  high as 35 mph.

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

* WHEN...From 1 PM CST /2 PM EST/ Monday to noon CST /1 PM EST/ 
  Tuesday.

* IMPACTS...Plan on slippery road conditions. The hazardous
  conditions could impact the morning or evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

In Illinois, the latest road conditions for Illinois can be
obtained on the internet at www.gettingaroundillinois.com. In
Indiana, the latest road conditions for Indiana are available by
calling 1-800-261-7623.

&&

$$

ILZ108-INZ001-002-251145-
/O.CON.KLOT.WW.Y.0001.210125T2200Z-210126T1800Z/
Eastern Will-Lake IN-Porter-
Including the cities of Crete, Peotone, Beecher, Gary, Hammond, 
Merrillville, Portage, Valparaiso, and Chesterton
943 PM CST Sun Jan 24 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 4 PM MONDAY TO
NOON CST TUESDAY...

* WHAT...Mixed precipitation expected, snow will likely be heavy
  at times for a period Monday evening. Total snow accumulations 
  of 3 to 6 inches and ice accumulations of a light glaze. Winds 
  gusting as high as 35 mph.

* WHERE...In Indiana, Lake IN and Porter Counties. In Illinois, 
  Eastern Will County.

* WHEN...From 4 PM Monday to noon CST Tuesday.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the morning or evening commute.

* ADDITIONAL DETAILS...The snow will likely mix with or change to
  freezing rain or freezing drizzle for a time later Monday
  evening into the overnight.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

In Illinois, the latest road conditions for Illinois can be
obtained on the internet at www.gettingaroundillinois.com. In
Indiana, the latest road conditions for Indiana are available by
calling 1-800-261-7623.

&&

$$

Castro
499 
WWUS43 KLOT 250520 CCA
WSWLOT

URGENT - WINTER WEATHER MESSAGE...CORRECTED
National Weather Service Chicago IL
1120 PM CST Sun Jan 24 2021

...Winter Storm to Impact the Region Beginning Monday Afternoon...

ILZ008-010>012-019>021-251145-
/O.CON.KLOT.WS.W.0001.210125T1900Z-210126T1800Z/
Ogle-Lee-De Kalb-Kane-La Salle-Kendall-Grundy-
Including the cities of Rochelle, Oregon, Byron, Dixon, DeKalb, 
Sycamore, Aurora, Elgin, Ottawa, Streator, La Salle, Mendota, 
Marseilles, Oswego, Yorkville, Plano, Morris, Coal City, 
and Minooka
1120 PM CST Sun Jan 24 2021

...WINTER STORM WARNING REMAINS IN EFFECT FROM 1 PM MONDAY TO
NOON CST TUESDAY...

* WHAT...Snow expected, moderate to heavy at times, especially
  Monday evening. Total snow accumulations of 4 to 7 inches. 
  Northeast winds gusting as high as 35 mph resulting in periods 
  of very low visibility.

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

* WHEN...From 1 PM Monday to noon CST Tuesday.

* IMPACTS...Travel could be difficult. Hazardous conditions are 
  likely to impact the Monday evening and Tuesday morning 
  commutes.

* ADDITIONAL DETAILS...Some power outages are possible due to the
  combined effects of the expected wetter nature of the snow and
  strong and gusty winds. Freezing rain and freezing drizzle may 
  mix in with the snow at times, mainly later Monday night for 
  locations south of I-88.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for Illinois can be obtained on the
internet at www.gettingaroundillinois.com.

&&

$$

ILZ003>005-251145-
/O.CON.KLOT.WS.W.0001.210125T2200Z-210126T1800Z/
Winnebago-Boone-McHenry-
Including the cities of Rockford, Belvidere, Crystal Lake, 
Algonquin, McHenry, and Woodstock
1120 PM CST Sun Jan 24 2021

...WINTER STORM WARNING REMAINS IN EFFECT FROM 4 PM MONDAY TO
NOON CST TUESDAY...

* WHAT...Snow expected, moderate to heavy at times, especially
  Monday evening and overnight. Total snow accumulations of 4 to 
  7 inches. Northeast winds gusting as high as 35 mph resulting in
  periods of very low visibility.

* WHERE...Winnebago, McHenry and Boone Counties.

* WHEN...From 4 PM Monday to noon CST Tuesday.

* IMPACTS...Travel could be difficult. Hazardous conditions are 
  likely to impact the Monday evening and Tuesday morning 
  commutes.

* ADDITIONAL DETAILS...Some power outages are possible due to 
  the combined effects of the expected wetter nature of the snow 
  and strong and gusty winds.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for Illinois can be obtained on the
internet at www.gettingaroundillinois.com.

&&

$$

ILZ006-013-103>107-251145-
/O.CON.KLOT.WS.W.0001.210125T2200Z-210126T2300Z/
Lake IL-DuPage-Northern Cook-Central Cook-Southern Cook-
Northern Will-Southern Will-
Including the cities of Waukegan, Buffalo Grove, Mundelein, 
Gurnee, Naperville, Wheaton, Downers Grove, Lombard, 
Carol Stream, 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, 
and Wilmington
1120 PM CST Sun Jan 24 2021

...WINTER STORM WARNING REMAINS IN EFFECT FROM 4 PM MONDAY TO
5 PM CST TUESDAY...

* WHAT...Snow expected, moderate to heavy at times, especially
  Monday evening and early overnight. Total snow accumulations of
  5 to 8 inches. Northeast winds could gust as high as 35 to 40 
  mph resulting in periods of very low visibility.

* WHERE...Portions of northeast Illinois.

* WHEN...From 4 PM Monday to 5 PM CST Tuesday.

* IMPACTS...Travel could be difficult. Hazardous conditions are 
  likely to impact the Monday evening and Tuesday morning 
  commutes.

* ADDITIONAL DETAILS...Some power outages are possible due to 
  the combined effects of the expected wetter nature of the snow 
  and strong and gusty winds. Freezing rain, freezing drizzle, 
  or sleet may mix in with the snow at times, mainly Monday 
  evening for locations south of I-88.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for Illinois can be obtained on the
internet at www.gettingaroundillinois.com.

&&

$$

ILZ023-032-033-039-INZ010-011-019-251145-
/O.COR.KLOT.WW.Y.0001.210125T1900Z-210126T1800Z/
Kankakee-Livingston-Iroquois-Ford-Newton-Jasper-Benton-
Including the cities of Kankakee, Bourbonnais, Bradley, Pontiac, 
Dwight, Fairbury, Watseka, Gilman, Paxton, Gibson City, Roselawn,
Kentland, Morocco, Rensselaer, DeMotte, Fowler, and Oxford
1120 PM CST Sun Jan 24 2021 /1220 AM EST Mon Jan 25 2021/

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 1 PM CST /2 PM
EST/ MONDAY TO NOON CST /1 PM EST/ TUESDAY...

* WHAT...Mixed precipitation expected. Total snow accumulations of
  1 to 4 inches, highest near and north of the Kankakee River. Ice
  accumulations of up to one tenth of an inch, with locally up to
  two tenths of an inch near and south of US-24. Winds gusting as
  high as 35 mph.

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

* WHEN...From 1 PM CST /2 PM EST/ Monday to noon CST /1 PM EST/ 
  Tuesday.

* IMPACTS...Plan on slippery road conditions. The hazardous
  conditions could impact the morning or evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

In Illinois, the latest road conditions for Illinois can be
obtained on the internet at www.gettingaroundillinois.com. In
Indiana, the latest road conditions for Indiana are available by
calling 1-800-261-7623.

&&

$$

ILZ108-INZ001-002-251145-
/O.CON.KLOT.WW.Y.0001.210125T2200Z-210126T1800Z/
Eastern Will-Lake IN-Porter-
Including the cities of Crete, Peotone, Beecher, Gary, Hammond, 
Merrillville, Portage, Valparaiso, and Chesterton
1120 PM CST Sun Jan 24 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 4 PM MONDAY TO
NOON CST TUESDAY...

* WHAT...Mixed precipitation expected, snow will likely be heavy
  at times for a period Monday evening. Total snow accumulations 
  of 3 to 6 inches and ice accumulations of a light glaze. Winds 
  gusting as high as 35 mph.

* WHERE...In Indiana, Lake IN and Porter Counties. In Illinois, 
  Eastern Will County.

* WHEN...From 4 PM Monday to noon CST Tuesday.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the morning or evening commute.

* ADDITIONAL DETAILS...The snow will likely mix with or change to
  freezing rain or freezing drizzle for a time later Monday
  evening into the overnight.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

In Illinois, the latest road conditions for Illinois can be
obtained on the internet at www.gettingaroundillinois.com. In
Indiana, the latest road conditions for Indiana are available by
calling 1-800-261-7623.

&&

$$

Castro
300 
WWUS43 KLOT 250903
WSWLOT

URGENT - WINTER WEATHER MESSAGE
National Weather Service Chicago IL
303 AM CST Mon Jan 25 2021

...Winter Storm to Impact the Region Beginning This Afternoon and
Evening...

ILZ008-010>012-019>021-251815-
/O.CON.KLOT.WS.W.0001.210125T1900Z-210126T1800Z/
Ogle-Lee-De Kalb-Kane-La Salle-Kendall-Grundy-
Including the cities of Rochelle, Oregon, Byron, Dixon, DeKalb, 
Sycamore, Aurora, Elgin, Ottawa, Streator, La Salle, Mendota, 
Marseilles, Oswego, Yorkville, Plano, Morris, Coal City, 
and Minooka
303 AM CST Mon Jan 25 2021

...WINTER STORM WARNING REMAINS IN EFFECT FROM 1 PM THIS
AFTERNOON TO NOON CST TUESDAY...

* WHAT...Snow expected, moderate to heavy at times, especially
  this evening. Total snow accumulations of 4 to 8 inches. 
  Northeast winds gusting as high as 35 mph resulting in periods 
  of very low visibility.

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

* WHEN...From 1 PM today to noon CST Tuesday.

* IMPACTS...Travel could be difficult. Hazardous conditions are
  likely to impact at least a portion of the commute this evening,
  as well as on Tuesday morning.

* ADDITIONAL DETAILS...Some power outages are possible due to 
  the combined effects of the expected wetter nature of the snow 
  and strong and gusty winds. Freezing rain and freezing drizzle 
  may mix in with the snow at times, mainly later Monday night 
  for locations south of I-88.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for Illinois can be obtained on the
internet at www.gettingaroundillinois.com.

&&

$$

ILZ003>005-251815-
/O.CON.KLOT.WS.W.0001.210125T2200Z-210126T1800Z/
Winnebago-Boone-McHenry-
Including the cities of Rockford, Belvidere, Crystal Lake, 
Algonquin, McHenry, and Woodstock
303 AM CST Mon Jan 25 2021

...WINTER STORM WARNING REMAINS IN EFFECT FROM 4 PM THIS
AFTERNOON TO NOON CST TUESDAY...

* WHAT...Snow expected, moderate to heavy at times, especially
  this evening and overnight. Total snow accumulations of 4 to 7 
  inches. Northeast winds gusting as high as 35 mph resulting in 
  periods of very low visibility.

* WHERE...Winnebago, McHenry and Boone Counties.

* WHEN...From 4 PM Today to noon CST Tuesday.

* IMPACTS...Travel could be difficult. Hazardous conditions are
  likely to impact at least a portion of the commute this evening,
  as well as on Tuesday morning.

* ADDITIONAL DETAILS...Some power outages are possible due to 
  the combined effects of the expected wetter nature of the snow 
  and strong and gusty winds.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for Illinois can be obtained on the
internet at www.gettingaroundillinois.com.

&&

$$

ILZ006-013-103>107-251815-
/O.CON.KLOT.WS.W.0001.210125T2200Z-210126T2300Z/
Lake IL-DuPage-Northern Cook-Central Cook-Southern Cook-
Northern Will-Southern Will-
Including the cities of Waukegan, Buffalo Grove, Mundelein, 
Gurnee, Naperville, Wheaton, Downers Grove, Lombard, 
Carol Stream, 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, 
and Wilmington
303 AM CST Mon Jan 25 2021

...WINTER STORM WARNING REMAINS IN EFFECT FROM 4 PM THIS
AFTERNOON TO 5 PM CST TUESDAY...

* WHAT...Snow expected, moderate to heavy at times, especially
  this evening and early overnight. Total snow accumulations of 5
  to 8 inches. Northeast winds could gust as high as 35 to 40 mph
  resulting in periods of very low visibility.

* WHERE...Portions of northeast Illinois.

* WHEN...From 4 PM today to 5 PM CST Tuesday.

* IMPACTS...Travel could be difficult. Hazardous conditions are
  likely to impact at least a portion of the commute this evening,
  as well as on Tuesday morning.

* ADDITIONAL DETAILS...Some power outages are possible due to 
  the combined effects of the expected wetter nature of the snow 
  and strong and gusty winds. Freezing rain, freezing drizzle, 
  or sleet may mix in with the snow at times, mainly Monday 
  evening for locations south of I-88.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for Illinois can be obtained on the
internet at www.gettingaroundillinois.com.

&&

$$

ILZ023-032-033-039-INZ010-011-019-251815-
/O.CON.KLOT.WW.Y.0001.210125T1900Z-210126T1800Z/
Kankakee-Livingston-Iroquois-Ford-Newton-Jasper-Benton-
Including the cities of Kankakee, Bourbonnais, Bradley, Pontiac, 
Dwight, Fairbury, Watseka, Gilman, Paxton, Gibson City, Roselawn,
Kentland, Morocco, Rensselaer, DeMotte, Fowler, and Oxford
303 AM CST Mon Jan 25 2021 /403 AM EST Mon Jan 25 2021/

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 1 PM CST /2 PM
EST/ THIS AFTERNOON TO NOON CST /1 PM EST/ TUESDAY...

* WHAT...Mixed precipitation expected. Total snow accumulations of
  1 to 4 inches, highest near and north of the Kankakee River. Ice
  accumulations of one to two tenths of an inch. Winds gusting as
  high as 35 mph.

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

* WHEN...From 1 PM CST /2 PM EST/ today to noon CST /1 PM EST/ 
  Tuesday.

* IMPACTS...Plan on slippery road conditions. The hazardous
  conditions could impact this evening's commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

In Illinois, the latest road conditions for Illinois can be
obtained on the internet at www.gettingaroundillinois.com. In
Indiana, the latest road conditions for Indiana are available by
calling 1-800-261-7623.

&&

$$

ILZ108-INZ001-002-251815-
/O.CON.KLOT.WW.Y.0001.210125T2200Z-210126T1800Z/
Eastern Will-Lake IN-Porter-
Including the cities of Crete, Peotone, Beecher, Gary, Hammond, 
Merrillville, Portage, Valparaiso, and Chesterton
303 AM CST Mon Jan 25 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 4 PM THIS
AFTERNOON TO NOON CST TUESDAY...

* WHAT...Mixed precipitation expected, snow will likely be heavy
  at times for a period this evening. Total snow accumulations of
  3 to 6 inches and ice accumulations of a light glaze. Winds 
  gusting as high as 35 mph.

* WHERE...In Indiana, Lake IN and Porter Counties. In Illinois, 
  Eastern Will County.

* WHEN...From 4 PM Monday to noon CST Tuesday.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the morning or evening commute.

* ADDITIONAL DETAILS...The snow will likely mix with or change to
  freezing rain or freezing drizzle for a time this evening into 
  the overnight.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

In Illinois, the latest road conditions for Illinois can be
obtained on the internet at www.gettingaroundillinois.com. In
Indiana, the latest road conditions for Indiana are available by
calling 1-800-261-7623.

&&

$$

Carlaw
593 
WWUS43 KLOT 251537
WSWLOT

URGENT - WINTER WEATHER MESSAGE
National Weather Service Chicago IL
937 AM CST Mon Jan 25 2021

ILZ008-010>012-019>021-252345-
/O.CON.KLOT.WS.W.0001.210125T1900Z-210126T1800Z/
Ogle-Lee-De Kalb-Kane-La Salle-Kendall-Grundy-
Including the cities of Rochelle, Oregon, Byron, Dixon, DeKalb, 
Sycamore, Aurora, Elgin, Ottawa, Streator, La Salle, Mendota, 
Marseilles, Oswego, Yorkville, Plano, Morris, Coal City, 
and Minooka
937 AM CST Mon Jan 25 2021

...WINTER STORM WARNING REMAINS IN EFFECT FROM 1 PM THIS
AFTERNOON TO NOON CST TUESDAY...

* WHAT...Steady snow and difficult travel conditions expected.
  Total snow accumulations of 4 to 8 inches are expected, highest
  west of I-39. Northeast winds gusting as high as 35 mph will
  lead to blowing snow and periods of very low visibility.

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

* WHEN...From 1 PM today to noon CST Tuesday.

* IMPACTS...Travel will become difficult. Hazardous conditions are
  likely to impact the Monday evening and Tuesday morning
  commutes. 

* ADDITIONAL DETAILS...Some power outages are possible due to the
  combined effects of the wet, heavy snow and gusty winds.
  Freezing rain and freezing drizzle may mix in with the snow at
  times, mainly tonight for locations south of I-88.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for Illinois can be obtained on the
internet at www.gettingaroundillinois.com.

&&

$$

ILZ003>005-252345-
/O.CON.KLOT.WS.W.0001.210125T2200Z-210126T1800Z/
Winnebago-Boone-McHenry-
Including the cities of Rockford, Belvidere, Crystal Lake, 
Algonquin, McHenry, and Woodstock
937 AM CST Mon Jan 25 2021

...WINTER STORM WARNING REMAINS IN EFFECT FROM 4 PM THIS
AFTERNOON TO NOON CST TUESDAY...

* WHAT...Steady snow and difficult travel conditions expected.
  Total snow accumulations of 4 to 7 inches are expected.
  Northeast winds gusting as high as 35 mph will lead to blowing
  snow and periods of very low visibility.

* WHERE...Winnebago, McHenry and Boone Counties.

* WHEN...From 4 PM Today to noon CST Tuesday.

* IMPACTS...Travel will become difficult. Hazardous conditions are
  likely to impact the Monday evening and Tuesday morning
  commutes. 

* ADDITIONAL DETAILS...Some power outages are possible due to the
  combined effects of the wet, heavy snow and gusty winds.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for Illinois can be obtained on the
internet at www.gettingaroundillinois.com.

&&

$$

ILZ006-013-103>107-252345-
/O.CON.KLOT.WS.W.0001.210125T2200Z-210126T2300Z/
Lake IL-DuPage-Northern Cook-Central Cook-Southern Cook-
Northern Will-Southern Will-
Including the cities of Waukegan, Buffalo Grove, Mundelein, 
Gurnee, Naperville, Wheaton, Downers Grove, Lombard, 
Carol Stream, 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, 
and Wilmington
937 AM CST Mon Jan 25 2021

...WINTER STORM WARNING REMAINS IN EFFECT FROM 4 PM THIS
AFTERNOON TO 5 PM CST TUESDAY...

* WHAT...Steady snow and difficult travel conditions expected.
  Total snow accumulations of 4 to 8 inches are expected with
  locally higher totals east of I-355. Northeast winds gusting as
  high as 40 mph will lead to blowing snow and periods of very low
  visibility, especially along the immediate Lake Michigan shore.

* WHERE...Portions of northeast Illinois.

* WHEN...From 4 PM today to 5 PM CST Tuesday.

* IMPACTS...Travel will become difficult. Hazardous conditions are
  likely to impact the Monday evening and Tuesday morning
  commutes. 

* ADDITIONAL DETAILS...Some power outages are possible due to the
  combined effects of the wet, heavy snow and gusty winds.
  Freezing rain and freezing drizzle may mix in with the snow at
  times, mainly tonight for locations south of I-88.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for Illinois can be obtained on the
internet at www.gettingaroundillinois.com.

&&

$$

ILZ023-032-033-039-INZ010-011-019-252345-
/O.CON.KLOT.WW.Y.0001.210125T1900Z-210126T1800Z/
Kankakee-Livingston-Iroquois-Ford-Newton-Jasper-Benton-
Including the cities of Kankakee, Bourbonnais, Bradley, Pontiac, 
Dwight, Fairbury, Watseka, Gilman, Paxton, Gibson City, Roselawn,
Kentland, Morocco, Rensselaer, DeMotte, Fowler, and Oxford
937 AM CST Mon Jan 25 2021 /1037 AM EST Mon Jan 25 2021/

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 1 PM CST /2 PM
EST/ THIS AFTERNOON TO NOON CST /1 PM EST/ TUESDAY...

* WHAT...Difficult travel conditions and mixed precipitation
  expected. Total snow accumulations up to 4 inches are expected,
  highest near and north of the Kankakee River. Ice accumulations
  of one to two tenths of an inch. Winds gusting as high as 35 
  mph.

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

* WHEN...From 1 PM CST /2 PM EST/ today to noon CST /1 PM EST/ 
  Tuesday.

* IMPACTS...Plan on slippery road conditions. The hazardous
  conditions may impact the Monday evening commute. 


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

In Illinois, the latest road conditions for Illinois can be
obtained on the internet at www.gettingaroundillinois.com. In
Indiana, the latest road conditions for Indiana are available by
calling 1-800-261-7623.

&&

$$

ILZ108-INZ001-002-252345-
/O.CON.KLOT.WW.Y.0001.210125T2200Z-210126T1800Z/
Eastern Will-Lake IN-Porter-
Including the cities of Crete, Peotone, Beecher, Gary, Hammond, 
Merrillville, Portage, Valparaiso, and Chesterton
937 AM CST Mon Jan 25 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 4 PM THIS
AFTERNOON TO NOON CST TUESDAY...

* WHAT...Difficult travel conditions and mixed precipitation
  expected. Total snow accumulations of 2 to 5 inches and ice
  accumulations of a glaze are expected. Northeast winds will gust
  as high as 35 mph. 

* WHERE...In Indiana, Lake IN and Porter Counties. In Illinois, 
  Eastern Will County.

* WHEN...From 4 PM Monday to noon CST Tuesday.

* IMPACTS...Travel will become difficult. Hazardous conditions are
  likely to impact the Monday evening and Tuesday morning
  commutes. 

* ADDITIONAL DETAILS... Freezing rain and freezing drizzle may mix
  in with the snow at times, mainly tonight. 


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

In Illinois, the latest road conditions for Illinois can be
obtained on the internet at www.gettingaroundillinois.com. In
Indiana, the latest road conditions for Indiana are available by
calling 1-800-261-7623.

&&

$$

BSB
649 
WWUS43 KLOT 252039
WSWLOT

URGENT - WINTER WEATHER MESSAGE
National Weather Service Chicago IL
239 PM CST Mon Jan 25 2021

ILZ008-010>012-019>021-260445-
/O.CON.KLOT.WS.W.0001.000000T0000Z-210126T1800Z/
Ogle-Lee-De Kalb-Kane-La Salle-Kendall-Grundy-
Including the cities of Rochelle, Oregon, Byron, Dixon, DeKalb, 
Sycamore, Aurora, Elgin, Ottawa, Streator, La Salle, Mendota, 
Marseilles, Oswego, Yorkville, Plano, Morris, Coal City, 
and Minooka
239 PM CST Mon Jan 25 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON CST
TUESDAY...

* WHAT...Steady snow and difficult travel conditions expected.
  Total snow accumulations of 3 to 7 inches are expected, highest
  west of I-39. Northeast winds gusting as high as 35 mph will 
  lead to blowing snow and periods of very low visibility.

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

* WHEN...Through noon CST Tuesday, with the heaviest snow tonight.

* IMPACTS...Travel will become difficult. Hazardous conditions are
  likely to impact the evening and Tuesday morning commutes.

* ADDITIONAL DETAILS...Isolated power outages are possible due to
  the combined effects of the wet, heavy snow and gusty winds. 
  Freezing rain and freezing drizzle may mix in with the snow at 
  times, mainly tonight for locations south of I-88.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for Illinois can be obtained on the
internet at www.gettingaroundillinois.com.

&&

$$
.Through 5 PM CST Tuesday with the heaviest snow through
  early Tuesday morning.
ILZ003>005-260445-
/O.CON.KLOT.WS.W.0001.210125T2200Z-210126T1800Z/
Winnebago-Boone-McHenry-
Including the cities of Rockford, Belvidere, Crystal Lake, 
Algonquin, McHenry, and Woodstock
239 PM CST Mon Jan 25 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON CST
TUESDAY...

* WHAT...Steady snow and difficult travel conditions expected. 
  Total snow accumulations of 4 to 7 inches are expected. 
  Northeast winds gusting as high as 35 mph will lead to blowing 
  snow and periods of very low visibility.

* WHERE...Winnebago, McHenry and Boone Counties.

* WHEN...Through noon CST Tuesday, with the heaviest snow tonight.

* IMPACTS...Travel will become difficult. Hazardous conditions are
  likely to impact the evening and Tuesday morning commutes.

* ADDITIONAL DETAILS...Isolated power outages are possible due to
  the combined effects of the wet, heavy snow and gusty winds.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for Illinois can be obtained on the
internet at www.gettingaroundillinois.com.

&&

$$

ILZ006-013-103>107-260445-
/O.CON.KLOT.WS.W.0001.210125T2200Z-210126T2300Z/
Lake IL-DuPage-Northern Cook-Central Cook-Southern Cook-
Northern Will-Southern Will-
Including the cities of Waukegan, Buffalo Grove, Mundelein, 
Gurnee, Naperville, Wheaton, Downers Grove, Lombard, 
Carol Stream, 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, 
and Wilmington
239 PM CST Mon Jan 25 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM CST
TUESDAY...

* WHAT...Steady snow and difficult travel conditions expected.
  Total snow accumulations of 5 to 8 inches are expected with 
  locally higher totals east of I-355. Northeast winds gusting as 
  high as 40 mph will lead to blowing snow and periods of very low
  visibility, especially along the immediate Lake Michigan shore.

* WHERE...Portions of northeast Illinois.

* WHEN...Through 5 PM CST Tuesday with the heaviest snow through
  early Tuesday morning.

* IMPACTS...Travel will become difficult. Hazardous conditions are
  likely to impact the evening and Tuesday morning commutes.

* ADDITIONAL DETAILS...Isolated power outages are possible due to
  the combined effects of the wet, heavy snow and gusty winds. 
  Freezing rain and freezing drizzle may mix in with the snow at 
  times, mainly tonight for locations south of I-88.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for Illinois can be obtained on the
internet at www.gettingaroundillinois.com.

&&

$$

ILZ023-032-033-039-INZ010-011-019-260445-
/O.CON.KLOT.WW.Y.0001.000000T0000Z-210126T1800Z/
Kankakee-Livingston-Iroquois-Ford-Newton-Jasper-Benton-
Including the cities of Kankakee, Bourbonnais, Bradley, Pontiac, 
Dwight, Fairbury, Watseka, Gilman, Paxton, Gibson City, Roselawn,
Kentland, Morocco, Rensselaer, DeMotte, Fowler, and Oxford
239 PM CST Mon Jan 25 2021 /339 PM EST Mon Jan 25 2021/

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON CST /1 PM
EST/ TUESDAY...

* WHAT...Difficult travel conditions and mixed precipitation
  expected. Total snow accumulations of 1 to 2 inches are
  expected, highest near and north of the Kankakee River. Ice
  accumulations of one to two tenths of an inch are expected, as
  well. Northeast winds will gust as high as 35 mph.

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

* WHEN...Through noon CST /1 PM EST/ Tuesday with the main impacts
  tonight.

* IMPACTS...Plan on slippery road conditions. The hazardous
  conditions may impact later portions of this evening's commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

In Illinois, the latest road conditions for Illinois can be
obtained on the internet at www.gettingaroundillinois.com. In
Indiana, the latest road conditions for Indiana are available by
calling 1-800-261-7623.

&&

$$

ILZ108-INZ001-002-260445-
/O.CON.KLOT.WW.Y.0001.210125T2200Z-210126T1800Z/
Eastern Will-Lake IN-Porter-
Including the cities of Crete, Peotone, Beecher, Gary, Hammond, 
Merrillville, Portage, Valparaiso, and Chesterton
239 PM CST Mon Jan 25 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON CST
TUESDAY...

* WHAT...Difficult travel conditions and mixed precipitation
  expected. Total snow accumulations of 2 to 5 inches are expected
  with the highest totals near Lake Michigan. Ice accumulations of
  a glaze are expected, as well. Northeast winds will gust as 
  high as 35 mph.

* WHERE...In Indiana, Lake IN and Porter Counties. In Illinois, 
  Eastern Will County.

* WHEN...Through noon CST Tuesday with the main impacts tonight.

* IMPACTS...Travel will become difficult. Hazardous conditions are
  likely to impact this evening and Tuesday morning commutes.

* ADDITIONAL DETAILS... Freezing rain and freezing drizzle may 
  mix in with the snow at times, mainly tonight.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

In Illinois, the latest road conditions for Illinois can be
obtained on the internet at www.gettingaroundillinois.com. In
Indiana, the latest road conditions for Indiana are available by
calling 1-800-261-7623.

&&

$$

BSB/MTF
421 
WWUS43 KLOT 260341
WSWLOT

URGENT - WINTER WEATHER MESSAGE
National Weather Service Chicago IL
941 PM CST Mon Jan 25 2021

ILZ008-010>012-019>021-261200-
/O.CON.KLOT.WS.W.0001.000000T0000Z-210126T1800Z/
Ogle-Lee-De Kalb-Kane-La Salle-Kendall-Grundy-
Including the cities of Rochelle, Oregon, Byron, Dixon, DeKalb, 
Sycamore, Aurora, Elgin, Ottawa, Streator, La Salle, Mendota, 
Marseilles, Oswego, Yorkville, Plano, Morris, Coal City, 
and Minooka
941 PM CST Mon Jan 25 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON CST
TUESDAY...

* WHAT...Steady snow and difficult travel conditions expected.
  Total snow accumulations of 4 to 7 inches are expected. 
  Northeast winds gusting as high as 35 mph will lead to blowing 
  snow and periods of very low visibility.

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

* WHEN...Through noon CST Tuesday, with the heaviest snow 
  tonight.

* IMPACTS...Travel will become difficult. Hazardous conditions 
  may continue to impact the Tuesday morning commute. 

* ADDITIONAL DETAILS...Isolated power outages are possible due to
  the combined effects of the wet, heavy snow and gusty winds.
  Freezing rain and freezing drizzle may mix in with the snow at
  times, but mainly south of I-80.  

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for Illinois can be obtained on the
internet at www.gettingaroundillinois.com.

&&

$$

ILZ003>005-261200-
/O.CON.KLOT.WS.W.0001.000000T0000Z-210126T1800Z/
Winnebago-Boone-McHenry-
Including the cities of Rockford, Belvidere, Crystal Lake, 
Algonquin, McHenry, and Woodstock
941 PM CST Mon Jan 25 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON CST
TUESDAY...

* WHAT...Steady snow and difficult travel conditions expected.
  Total snow accumulations of 4 to 7 inches are expected.
  Northeast winds gusting as high as 35 mph will lead to blowing
  snow and periods of very low visibility.

* WHERE...Winnebago, McHenry and Boone Counties.

* WHEN...Through noon CST Tuesday, with the heaviest snow 
  tonight.

* IMPACTS...Travel will become difficult. Hazardous conditions may
  continue to impact the Tuesday morning commute. 

* ADDITIONAL DETAILS...Isolated power outages are possible due 
  to the combined effects of the wet, heavy snow and gusty winds.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for Illinois can be obtained on the
internet at www.gettingaroundillinois.com.

&&

$$

ILZ006-013-103>107-261200-
/O.CON.KLOT.WS.W.0001.000000T0000Z-210126T2300Z/
Lake IL-DuPage-Northern Cook-Central Cook-Southern Cook-
Northern Will-Southern Will-
Including the cities of Waukegan, Buffalo Grove, Mundelein, 
Gurnee, Naperville, Wheaton, Downers Grove, Lombard, 
Carol Stream, 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, 
and Wilmington
941 PM CST Mon Jan 25 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM CST
TUESDAY...

* WHAT...Steady snow and difficult travel conditions expected.
  Total snow accumulations of 4 to 8 inches, with the highest
  totals near the lake. Northeast winds gusting as high as 40 
  mph will lead to blowing snow and periods of very low 
  visibility, especially along the immediate Lake Michigan shore.

* WHERE...Portions of northeast Illinois.

* WHEN...Through 5 PM CST Tuesday with the heaviest snow through 
  early Tuesday morning.

* IMPACTS...Travel will become difficult. Hazardous conditions may
  continue to impact the Tuesday morning commute. 

* ADDITIONAL DETAILS...Isolated power outages are possible due to
  the combined effects of the wet, heavy snow and gusty winds.
  Freezing rain and freezing drizzle may mix in with the snow at
  times, mainly tonight for locations south of I-80. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for Illinois can be obtained on the
internet at www.gettingaroundillinois.com.

&&

$$

ILZ023-032-033-039-INZ010-011-019-261200-
/O.CON.KLOT.WW.Y.0001.000000T0000Z-210126T1800Z/
Kankakee-Livingston-Iroquois-Ford-Newton-Jasper-Benton-
Including the cities of Kankakee, Bourbonnais, Bradley, Pontiac, 
Dwight, Fairbury, Watseka, Gilman, Paxton, Gibson City, Roselawn,
Kentland, Morocco, Rensselaer, DeMotte, Fowler, and Oxford
941 PM CST Mon Jan 25 2021 /1041 PM EST Mon Jan 25 2021/

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON CST /1 PM
EST/ TUESDAY...

* WHAT...Difficult travel conditions and mixed precipitation 
  expected. Total snow accumulations of 1 to 2 inches are 
  expected, highest near and north of the Kankakee River. Ice 
  accumulations of one to two tenths of an inch are expected, as 
  well. Northeast winds will gust as high as 35 mph.

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

* WHEN...Through noon CST /1 PM EST/ Tuesday with the main 
  impacts tonight.

* IMPACTS...Plan on slippery road conditions. The hazardous
  conditions may impact later portions of this evening's commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

In Illinois, the latest road conditions for Illinois can be
obtained on the internet at www.gettingaroundillinois.com. In
Indiana, the latest road conditions for Indiana are available by
calling 1-800-261-7623.

&&

$$

ILZ108-INZ001-002-261200-
/O.CON.KLOT.WW.Y.0001.000000T0000Z-210126T1800Z/
Eastern Will-Lake IN-Porter-
Including the cities of Crete, Peotone, Beecher, Gary, Hammond, 
Merrillville, Portage, Valparaiso, and Chesterton
941 PM CST Mon Jan 25 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON CST
TUESDAY...

* WHAT...Difficult travel conditions and mixed precipitation
  expected. Total snow accumulations of 1 to 4 inches are 
  expected with the highest totals near Lake Michigan. Ice 
  accumulations of a glaze are expected, as well. Northeast winds 
  will gust as high as 35 mph.

* WHERE...In Indiana, Lake IN and Porter Counties. In Illinois, 
  Eastern Will County.

* WHEN...Through noon CST Tuesday with the main impacts tonight.

* IMPACTS...Travel will become difficult. Hazardous conditions may
  continue to impact the Tuesday morning commute.

* ADDITIONAL DETAILS... Freezing rain and freezing drizzle may 
  mix in with the snow at times, mainly tonight.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

In Illinois, the latest road conditions for Illinois can be
obtained on the internet at www.gettingaroundillinois.com. In
Indiana, the latest road conditions for Indiana are available by
calling 1-800-261-7623.

&&

$$

Carlaw
330 
WWUS43 KLOT 260911
WSWLOT

URGENT - WINTER WEATHER MESSAGE
National Weather Service Chicago IL
311 AM CST Tue Jan 26 2021

ILZ019>021-261800-
/O.CAN.KLOT.WS.W.0001.000000T0000Z-210126T1800Z/
/O.EXA.KLOT.WW.Y.0001.000000T0000Z-210126T1800Z/
La Salle-Kendall-Grundy-
Including the cities of Ottawa, Streator, La Salle, Mendota, 
Marseilles, Oswego, Yorkville, Plano, Morris, Coal City, 
and Minooka
311 AM CST Tue Jan 26 2021

...WINTER WEATHER ADVISORY IN EFFECT UNTIL NOON CST TODAY...
...WINTER STORM WARNING IS CANCELLED...

* WHAT...Mixed precipitation. Additional snow accumulations of 
  one to three inches and ice accumulations up to one tenth of an 
  inch.

* WHERE...La Salle, Kendall and Grundy Counties.

* WHEN...Until noon CST today.

* IMPACTS...Plan on slick and difficult travel conditions. The 
  hazardous conditions will impact the morning commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for Illinois can be obtained on the
internet at www.gettingaroundillinois.com.

&&

$$

ILZ105>107-261815-
/O.CAN.KLOT.WS.W.0001.000000T0000Z-210126T2300Z/
/O.EXB.KLOT.WW.Y.0001.000000T0000Z-210126T2300Z/
Southern Cook-Northern Will-Southern Will-
Including the cities of Calumet City, Oak Forest, Lemont, 
Orland Park, Park Forest, Joliet, Bolingbrook, Plainfield, 
Mokena, Channahon, Manhattan, and Wilmington
311 AM CST Tue Jan 26 2021

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 5 PM CST THIS
AFTERNOON...
...WINTER STORM WARNING IS CANCELLED...

* WHAT...Mixed precipitation. Additional snow accumulations of one
  to three inches and ice accumulations up to one tenth of an
  inch.

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

* WHEN...Until 5 PM CST this afternoon.

* IMPACTS...Plan on slick and difficult travel conditions. The 
  hazardous conditions will impact the morning commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for Illinois can be obtained on the
internet at www.gettingaroundillinois.com.

&&

$$

ILZ008-010>012-261800-
/O.CON.KLOT.WS.W.0001.000000T0000Z-210126T1800Z/
Ogle-Lee-De Kalb-Kane-
Including the cities of Rochelle, Oregon, Byron, Dixon, DeKalb, 
Sycamore, Aurora, and Elgin
311 AM CST Tue Jan 26 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON CST TODAY...

* WHAT...Snow, heavy at times this morning. Additional snow
  accumulations of 2 to 4 inches. Storm total accumulations of 4 
  to 7 inches. Northeast winds gusting to 30 mph will lead to 
  blowing snow and periods of very low visibility. 

* WHERE...Ogle, Lee, De Kalb and Kane Counties.

* WHEN...Until noon CST today.

* IMPACTS...Travel will continue to be difficult. Hazardous
  conditions will impact this morning's commute.

* ADDITIONAL DETAILS...Isolated power outages are possible due to
  the combined effects of the wet, heavy snow and gusty winds.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for Illinois can be obtained on the
internet at www.gettingaroundillinois.com.

&&

$$

ILZ003>005-261800-
/O.CON.KLOT.WS.W.0001.000000T0000Z-210126T1800Z/
Winnebago-Boone-McHenry-
Including the cities of Rockford, Belvidere, Crystal Lake, 
Algonquin, McHenry, and Woodstock
311 AM CST Tue Jan 26 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON CST TODAY...

* WHAT...Heavy snow. Additional snow accumulations of 2 to 5
  inches. Storm total snowfall of 4 to 7 inches. Northeast winds
  gusting to 30 mph will lead to blowing snow and periods of very
  low visibility. 

* WHERE...Winnebago, McHenry and Boone Counties.

* WHEN...Until noon CST today.

* IMPACTS...Travel will continue to be difficult. Hazardous
  conditions will impact this morning's commute.

* ADDITIONAL DETAILS...Isolated power outages are possible due to
  the combined effects of the wet, heavy snow and gusty winds.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for Illinois can be obtained on the
internet at www.gettingaroundillinois.com.

&&

$$

ILZ006-013-103-104-261815-
/O.CON.KLOT.WS.W.0001.000000T0000Z-210126T2300Z/
Lake IL-DuPage-Northern Cook-Central Cook-
Including the cities of Waukegan, Buffalo Grove, Mundelein, 
Gurnee, Naperville, Wheaton, Downers Grove, Lombard, 
Carol Stream, Evanston, Des Plaines, Schaumburg, Palatine, 
Northbrook, Chicago, Cicero, Oak Lawn, Oak Park, and La Grange
311 AM CST Tue Jan 26 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM CST THIS
AFTERNOON...

* WHAT...Snow, heavy at times. Additional snow accumulations of 2
  to 5 inches, highest near the lake. Northeast winds gusting to 
  30 mph will lead to blowing snow and periods of very low 
  visibility. 

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

* WHEN...Until 5 PM CST this afternoon.

* IMPACTS...Travel will continue to be difficult. Hazardous
  conditions will impact this morning's commute.

* ADDITIONAL DETAILS...Isolated power outages are possible due to
  the combined effects of the wet, heavy snow and gusty winds.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for Illinois can be obtained on the
internet at www.gettingaroundillinois.com.

&&

$$

ILZ108-INZ001-002-261815-
/O.EXT.KLOT.WW.Y.0001.000000T0000Z-210126T2300Z/
Eastern Will-Lake IN-Porter-
Including the cities of Crete, Peotone, Beecher, Gary, Hammond, 
Merrillville, Portage, Valparaiso, and Chesterton
311 AM CST Tue Jan 26 2021

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 5 PM CST THIS
AFTERNOON...

* WHAT...Mixed precipitation. Additional snow accumulations of one
  to three inches and ice accumulations up to one tenth of an
  inch.

* WHERE...Eastern Will, Lake Indiana, and Porter Counties.

* WHEN...Until 5 PM CST this afternoon.

* IMPACTS...Plan on slick and difficult travel conditions. The
  hazardous conditions will impact the morning commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

In Illinois, the latest road conditions for Illinois can be
obtained on the internet at www.gettingaroundillinois.com. In
Indiana, the latest road conditions for Indiana are available by
calling 1-800-261-7623.

&&

$$

ILZ023-032-033-039-INZ010-011-019-261800-
/O.CON.KLOT.WW.Y.0001.000000T0000Z-210126T1800Z/
Kankakee-Livingston-Iroquois-Ford-Newton-Jasper-Benton-
Including the cities of Kankakee, Bourbonnais, Bradley, Pontiac, 
Dwight, Fairbury, Watseka, Gilman, Paxton, Gibson City, Roselawn,
Kentland, Morocco, Rensselaer, DeMotte, Fowler, and Oxford
311 AM CST Tue Jan 26 2021 /411 AM EST Tue Jan 26 2021/

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON CST /1 PM
EST/ TODAY...

* WHAT...Mixed precipitation. Additional snow accumulations of 
  up to one inch and ice accumulations of up to one tenth of an 
  inch.

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

* WHEN...Until noon CST /1 PM EST/ today.

* IMPACTS...Plan on slick road conditions. The hazardous
  conditions will impact the morning commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

In Illinois, the latest road conditions for Illinois can be
obtained on the internet at www.gettingaroundillinois.com. In
Indiana, the latest road conditions for Indiana are available by
calling 1-800-261-7623.

&&

$$

Carlaw
099 
WWUS43 KLOT 261808
WSWLOT

URGENT - WINTER WEATHER MESSAGE
National Weather Service Chicago IL
1208 PM CST Tue Jan 26 2021



ILZ003>005-008-010>012-261915-
/O.EXP.KLOT.WS.W.0001.000000T0000Z-210126T1800Z/
Winnebago-Boone-McHenry-Ogle-Lee-De Kalb-Kane-
Including the cities of Rockford, Belvidere, Crystal Lake, 
Algonquin, McHenry, Woodstock, Rochelle, Oregon, Byron, Dixon, 
DeKalb, Sycamore, Aurora, and Elgin
1208 PM CST Tue Jan 26 2021

...WINTER STORM WARNING HAS EXPIRED...

Periods of light snow will continue at times this afternoon, but
little or no new snow accumulation is expected. 

$$

ILZ019>021-023-032-033-039-INZ010-011-019-261915-
/O.EXP.KLOT.WW.Y.0001.000000T0000Z-210126T1800Z/
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-Newton-
Jasper-Benton-
Including the cities of Ottawa, Streator, La Salle, Mendota, 
Marseilles, Oswego, Yorkville, Plano, Morris, Coal City, Minooka,
Kankakee, Bourbonnais, Bradley, Pontiac, Dwight, Fairbury, 
Watseka, Gilman, Paxton, Gibson City, Roselawn, Kentland, 
Morocco, Rensselaer, DeMotte, Fowler, and Oxford
1208 PM CST Tue Jan 26 2021 /108 PM EST Tue Jan 26 2021/

...WINTER WEATHER ADVISORY HAS EXPIRED...

Periods of light snow will continue at times this afternoon, but
little or no new snow accumulation is expected. 

$$

ILZ006-013-103-104-262300-
/O.CON.KLOT.WS.W.0001.000000T0000Z-210126T2300Z/
Lake IL-DuPage-Northern Cook-Central Cook-
Including the cities of Waukegan, Buffalo Grove, Mundelein, 
Gurnee, Naperville, Wheaton, Downers Grove, Lombard, 
Carol Stream, Evanston, Des Plaines, Schaumburg, Palatine, 
Northbrook, Chicago, Cicero, Oak Lawn, Oak Park, and La Grange
1208 PM CST Tue Jan 26 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM CST THIS
AFTERNOON...

* WHAT...Periods of Snow. Additional snow accumulations of 1 to 2
  inches, highest near the lake. Northeast winds gusting to 30 mph
  will lead to blowing snow and periods of very low visibility.

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

* WHEN...Until 5 PM CST this afternoon.

* IMPACTS...Travel will continue to be hazardous.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for Illinois can be obtained on the
internet at www.gettingaroundillinois.com.

&&

$$

ILZ105>108-INZ001-002-262300-
/O.CON.KLOT.WW.Y.0001.000000T0000Z-210126T2300Z/
Southern Cook-Northern Will-Southern Will-Eastern Will-Lake IN-
Porter-
Including the cities of Calumet City, Oak Forest, Lemont, 
Orland Park, Park Forest, Joliet, Bolingbrook, Plainfield, 
Mokena, Channahon, Manhattan, Wilmington, Crete, Peotone, 
Beecher, Gary, Hammond, Merrillville, Portage, Valparaiso, 
and Chesterton
1208 PM CST Tue Jan 26 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM CST THIS
AFTERNOON...

* WHAT...Periods of light snow. Additional snow accumulations 
  less than one inch.

* WHERE...Eastern Will, Lake Indiana, and Porter Counties.

* WHEN...Until 5 PM CST this afternoon.

* IMPACTS...Plan on slick travel conditions. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

In Illinois, the latest road conditions for Illinois can be
obtained on the internet at www.gettingaroundillinois.com. In
Indiana, the latest road conditions for Indiana are available by
calling 1-800-261-7623.

&&

$$
386 
WWUS43 KLOT 262113
WSWLOT

URGENT - WINTER WEATHER MESSAGE
National Weather Service Chicago IL
313 PM CST Tue Jan 26 2021


ILZ006-013-103-104-262215-
/O.CAN.KLOT.WS.W.0001.000000T0000Z-210126T2300Z/
Lake IL-DuPage-Northern Cook-Central Cook-
Including the cities of Waukegan, Buffalo Grove, Mundelein, 
Gurnee, Naperville, Wheaton, Downers Grove, Lombard, 
Carol Stream, Evanston, Des Plaines, Schaumburg, Palatine, 
Northbrook, Chicago, Cicero, Oak Lawn, Oak Park, and La Grange
313 PM CST Tue Jan 26 2021

...WINTER STORM WARNING IS CANCELLED...

Lake effect snow showers will continue across the area into 
tonight, but the threat for widespread accumulations has come to 
an end.

$$

ILZ105>108-INZ001-002-262215-
/O.CAN.KLOT.WW.Y.0001.000000T0000Z-210126T2300Z/
Southern Cook-Northern Will-Southern Will-Eastern Will-Lake IN-
Porter-
Including the cities of Calumet City, Oak Forest, Lemont, 
Orland Park, Park Forest, Joliet, Bolingbrook, Plainfield, 
Mokena, Channahon, Manhattan, Wilmington, Crete, Peotone, 
Beecher, Gary, Hammond, Merrillville, Portage, Valparaiso, 
and Chesterton
313 PM CST Tue Jan 26 2021

...WINTER WEATHER ADVISORY IS CANCELLED...

Lake effect snow showers will continue across the area into 
tonight, but the threat for widespread accumulations has come to 
an end.

$$

What forecasters said that day

The local office's own words before this winter storm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Chicago, IL wrote its last area forecast discussion before this winter storm warning went out at Jan 24, 2:26 PM CST, 29 minutes earlier.

Area forecast discussion, Jan 24, 2:26 PM CST, 29 minutes before
Area Forecast Discussion
National Weather Service Chicago/Romeoville, IL
226 PM CST Sun Jan 24 2021

.UPDATE...
1045 AM CST

A narrow region of light freezing drizzle and mist exists
generally along and east of I-57 this morning. This will continue
to drift to the east over the next hour or two and could result in
patchy slick spots on sidewalks and elevated road surfaces.
Otherwise dry conditions are expected through the remainder of the
day with high temperatures in the lower to mid 30s. There is a
signal that some light lake effect snow/flurries may try to
develop tonight into early Monday morning as winds turn more
northeasterly off the lake.

No major changes are planned this morning to the ongoing winter
weather headlines for Monday-Tuesday.

Petr

&&

.SHORT TERM...
336 AM CST

Through Tonight...

An increasingly sheared mid-level wave evident in water vapor
imagery early this evening continues its eastward trek across Iowa
into northern Illinois and southern Wisconsin. Fairly pronounced
low- level isentropic ascent is present, but is providing little
support to the mid-level wave due to a substantial amount of dry
air below 5- 7kft. This dry air is also eroding a significant
amount of the snow south of I-88 and west of the Chicago metro,
likely a result of the replenishment of dry air upstream that has
been less contaminated by precip aloft over Indiana. Where precip
has reached the ground (mainly in north-central IL), brief bursts
of moderate snow have been observed. Observational trends indicate
the bulk of the mid- level support is tracking into the area
quicker than guidance would suggest, with near-term guidance
(HRRR/RAP) lagging reality by a couple hours. Taking this into
account, have lowered snow totals outside of north-central
Illinois to under a half inch, with potentially no more than a
trace across the far southern CWA. 1-2" still appears likely
closer to the WI state line. At this point, most of the
appreciable precip will likely exit the forecast area by shortly
after daybreak.

Guidance also continues to back off on the development of
freezing drizzle when mid-level moisture advects northeast early
this morning. Upstream ceilings over 3kft and little to no
indication of reduced visibility from mist/drizzle in west-central
Illinois into southeast Iowa support the trend in guidance. With
that said, a lagging 700-850 hPa trough may lower ceilings enough
by mid-morning that a few patches of light drizzle could develop.
At this time, little to no impact is expected.

Beyond this morning, the forecast looks dry ahead of Monday's
approaching winter storm (see the long term forecast for details).
The contracting low-level thermal gradient is progged to be south
of the CWA, which should preclude drizzle potential in the south
half of the CWA overnight.

Kluber

&&

.LONG TERM...
226 PM CST

Wednesday through Sunday...

Guidance remains in generally good agreement in depicting a mid-
level short wave trough propagating eastward from the Plains
Wednesday. With the low-mid level baroclinic zone shunted south of
the forecast area in the wake of our early week winter storm,
most of the response looks to occur downstate and into the Ohio
and Tennessee Valleys. Forecast soundings from the ECMWF and GFS
do depict a period of saturation associated with the mid-level
trough during the day Wednesday however, supportive of a potential
for some light snow. Given the track of the better forcing, will
maintain decent chance pops across the southern cwa, decreasing
farther north toward the IL/WI state line. Any lingering light
snow should ramp down quickly Wednesday evening, as the mid-level
trough axis moves east of the forecast area.

Broad upper ridging is then progged to develop into the Midwest
Thursday through Friday night, providing a period of quiet, dry
weather for the end of the week. Wednesday night and Thursday
night could be relatively cold, especially across far northern IL,
as surface high pressure ridge slides across fresh deep snow
cover. Question will be clearing of cloud cover especially
Wednesday night with the ridge still off to the west. NBM blended
temp guidance likely a bit on the mild side, though with so much
focus in the near term will let these ride for now.

Long range model guidance indicates amplified short wave energy
will eject from the southwestern states Friday night into
Saturday, with indications of its associated surface low lifting
northeast into the mid-Mississippi Valley Saturday evening before
tracking across or near the forecast area into Sunday. Current low
track and thermal fields would suggest precip may start as snow
or a mix, then change to rain from the south as the column warms
ahead of the low. Understandably however, confidence is pretty low
with these details still a week out in the forecast.

Ratzer

&&

.AVIATION...
For the 18Z TAFs...

Primary TAF concerns:
* Ceiling trends with MVFR to near MVFR cigs expected through the
  period
* Lake effect clouds/flurries late tonight into Monday AM
* Gusty winds Monday out of the east northeast
* Timing of snow Monday late afternoon/early eve

Mostly quiet weather expected the remainder of the day with the
light snow and freezing drizzle having moved off to the east this
morning. MVFR to low end VFR stratus will likely be around through
the majority of the TAF period. Southerly winds will turn
westerly and then northwesterly as a surface trough axis moves
overhead this afternoon and should remain mainly under 10 kt.
Winds are expected to turn more northeasterly after midnight
tonight. This will assist in increasing the potential for lake
effect cloud development. There is also a signal that there could
be a few lake effect flurries, especially into northwest Indiana.
So have included a BKN015 cig at the Chicago area terminals to
account for this and a P6SM -SN mention at GYY where the better
potential to see a few flurries will be.

Heading into the daytime hours on Monday, winds are expected to
increase out of the east northeast through the day ahead of our
next weather system, with gusts in in the 25+ kt range likely by
mid afternoon. Snow is expected to lift north into the area toward
the end of the 30 hour TAFs. Confidence on the exact timing of
the onset of precipitation is still somewhat low, expect
conditions to quickly begin deteriorating on once the snow begins,
especially just beyond the current TAF period.

Petr

&&

.MARINE...
526 AM CST

A strong area of low pressure will track near or north of the Ohio
River Monday into Tuesday. With expansive high pressure north of
the Great Lakes during this time, a tight pressure gradient will
result in strong and gusty northeast winds over Lake Michigan.
Peak winds look to arrive Monday evening through Tuesday morning.

Based on the current forecast, winds appear to generally peak
around 30 kts or so, with a period favoring some sporadic 35 kt
gales Monday night. Given this, we elected to forgo a Gale Watch
at this time, but Small Craft Advisory conditions look like a
very good bet Monday afternoon through Tuesday night and into
Wednesday morning, especially along the Illinois nearshore.

Carlaw

&&

.LOT WATCHES/WARNINGS/ADVISORIES...
IL...Winter Storm Watch...ILZ008-ILZ010-ILZ011-ILZ012-ILZ019-ILZ020-
     ILZ021...noon Monday to noon Tuesday.

     Winter Storm Watch...ILZ003-ILZ004-ILZ005...4 PM Monday to noon
     Tuesday.

     Winter Storm Watch...ILZ006-ILZ013-ILZ103-ILZ104-ILZ105-ILZ106-
     ILZ107-ILZ108...4 PM Monday to 5 PM Tuesday.

IN...Winter Storm Watch...INZ001...4 PM Monday to 5 PM Tuesday.

LM...None.
&&

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Hazardous weather outlook, Jan 24, 4:50 AM CST, 10 hours 5 minutes before
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
450 AM CST Sun Jan 24 2021

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-251100-
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-
450 AM CST Sun Jan 24 2021 /550 AM EST Sun Jan 24 2021/

This Hazardous Weather Outlook is for portions of North Central
Illinois...Northeast Illinois and Northwest Indiana.

.DAY ONE...Today and Tonight.

Weather hazards expected...

  Limited Ice Accumulation Risk.
  Limited Snow Risk.

DISCUSSION...

Light snow, possibly mixed with freezing drizzle, will end by
this afternoon. Total accumulations will range from 1 to 2 inches
near the Wisconsin state line to under one inch elsewhere.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Monday...
  Significant Snow Risk.
  Elevated Lakeshore Flood Risk.
  Limited Non Thunderstorm Wind Risk near Lake Michigan.
  Elevated Ice Accumulation Risk south of I-80.
Tuesday...
  Elevated Snow Risk.
  Elevated Lakeshore Flood Risk.
  Limited Non Thunderstorm Wind Risk near Lake Michigan.

DISCUSSION:

There is increasing potential for a winter storm to impact the
region Monday and into the day Tuesday. Snow accumulations of at
least six inches are appearing increasing likely for locales north
of I-80. A wintry mix, including freezing rain, is likely south
of I-80, with some potential for freezing drizzle to develop
Monday afternoon and evening. Gusty winds, combined with a
somewhat wetter nature snow may result in sporadic power outages.

Expected gusty northeast winds combined with elevated lake levels
will likely cause lakeshore flooding impacts Monday evening into
early Tuesday.

.SPOTTER INFORMATION STATEMENT...

  Spotter activation will not be necessary through tonight.

LMZ740>745-251100-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
450 AM CST Sun Jan 24 2021

This Hazardous Weather Outlook is for portions of the Illinois
nearshore waters of Lake Michigan and the Indiana nearshore
waters of Lake Michigan.

.DAY ONE...Today and Tonight.

Weather hazards expected...

  Hazardous conditions for small craft this morning far
   northeast IL.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Monday and Tuesday...
  Hazardous conditions for small craft.
  Gale force winds and or very hazardous waves possible.
Wednesday and Thursday...
  Hazardous conditions for small craft are likely.

Kluber/Carlaw

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In the hours before

Special weather statement, Jan 24, 9:23 AM CST, 5 hours 32 minutes before
SPECIAL WEATHER STATEMENT
National Weather Service Chicago/Romeoville IL
923 AM CST Sun Jan 24 2021

ILZ032-033-039-INZ010-011-019-241700-
Livingston-Iroquois-Ford-Newton-Jasper-Benton-
Including the cities of Pontiac, Dwight, Fairbury, Watseka,
Gilman, Paxton, Gibson City, Roselawn, Kentland, Morocco,
Rensselaer, DeMotte, Fowler, and Oxford
923 AM CST Sun Jan 24 2021 /1023 AM EST Sun Jan 24 2021/

...Pockets of Light Freezing Drizzle and Light Snow This
Morning...

Pockets of light freezing drizzle, at times mixed with a very fine
snow, will be possible for a few more hours this morning.
Motorists are advised to use caution, especially on elevated,
secondary, and any untreated road surfaces. Slow down and allow
for extra braking distance and a little extra time to reach your
destination.

Petr

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 24, 3:05 AM CSTWinter Storm WatchLOTBoone, Cook, DeKalb, DuPage, Grundy, Kane and 8 more12 hr
Jan 24, 2:48 PM CSTGale WatchLOT6 hr
Jan 24, 2:55 PM CSTWinter Weather AdvisoryLOTCook, Ford, Grundy, Iroquois, Kankakee, Kendall and 3 more48 hr
Jan 24, 3:08 PM CSTLakeshore Flood AdvisoryLOTCook, Lake45 hr

Nearby

Winter Storm Warnings in Illinois, 2021Every winter storm 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.