A period of wet snow fell across portions of northern Illinois during the early to mid afternoon of February 4th.  A strong cold front moved across the area in the early evening, bringing much colder air, strong winds and periods of heavy fluffy snow.  The strong winds and heavy snow produced near blizzard conditions across many areas of northern Illinois through early morning on February 5th, with the worst conditions across northwest Illinois.  Route 251 was closed in La Salle County and 34 drivers had to be rescued due to the blowing snow and poor visibility.  In Lee County, 18 people were rescued with some stranded for as long as 6 to 8 hours.  Snowfall amounts were generally in the 2 to 4 inch range.  Rockford Airport measured 1.6 inches and Chicago O'Hare Airport measured 2.4 inches.

Winter Storm in BOONE, ILLINOIS
From 04-FEB-21 12:30:00 to 05-FEB-21 02:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Storm in LEE, ILLINOIS
From 04-FEB-21 11:00:00 to 05-FEB-21 02:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Storm in OGLE, ILLINOIS
From 04-FEB-21 10:30:00 to 05-FEB-21 02:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Storm in LA SALLE, ILLINOIS
From 04-FEB-21 11:00:00 to 05-FEB-21 02:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Winter Storm in DE KALB, ILLINOIS
From 04-FEB-21 11:00:00 to 05-FEB-21 02:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in MCHENRY, ILLINOIS
From 04-FEB-21 12:30:00 to 05-FEB-21 02:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in LAKE, ILLINOIS
From 04-FEB-21 12:30:00 to 05-FEB-21 02:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in KANE, ILLINOIS
From 04-FEB-21 12:00:00 to 05-FEB-21 02:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in DU PAGE, ILLINOIS
From 04-FEB-21 12:00:00 to 05-FEB-21 02:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in KENDALL, ILLINOIS
From 04-FEB-21 11:30:00 to 05-FEB-21 02:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in GRUNDY, ILLINOIS
From 04-FEB-21 11:30:00 to 05-FEB-21 02:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in NORTHERN WILL COUNTY, ILLINOIS
From 04-FEB-21 11:30:00 to 05-FEB-21 02:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in EASTERN WILL COUNTY, ILLINOIS
From 04-FEB-21 11:30:00 to 05-FEB-21 02:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in SOUTHERN WILL COUNTY, ILLINOIS
From 04-FEB-21 11:30:00 to 05-FEB-21 02:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in SOUTHERN COOK COUNTY, ILLINOIS
From 04-FEB-21 11:30:00 to 05-FEB-21 02:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in CENTRAL COOK COUNTY, ILLINOIS
From 04-FEB-21 12:00:00 to 05-FEB-21 02:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in LIVINGSTON, ILLINOIS
From 04-FEB-21 12:00:00 to 05-FEB-21 02:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in NORTHERN COOK COUNTY, ILLINOIS
From 04-FEB-21 12:00:00 to 05-FEB-21 02:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in KANKAKEE, ILLINOIS
From 04-FEB-21 12:00:00 to 05-FEB-21 02:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in FORD, ILLINOIS
From 04-FEB-21 18:00:00 to 05-FEB-21 02:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in IROQUOIS, ILLINOIS
From 04-FEB-21 18:00:00 to 05-FEB-21 02:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Storm in WINNEBAGO, ILLINOIS
From 04-FEB-21 11:30:00 to 05-FEB-21 02:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter