A winter storm moved across northern Illinois from the afternoon of December 29th through the early morning of December 30th.  Moderate to heavy snow spread across northern Illinois by late afternoon with snow quickly accumulating on roads making for a slow afternoon commute.  The heaviest snow occurred across northwest Illinois.  The highest snowfall totals included 9.5 inches in Lake Summerset; 8.1 inches in Winnebago; 6.2 inches at the Rockford Airport, 6.0 inches near Brookville and 6.0 inches near Dixon.  Snowfall amounts were generally in the 3 to 5 inch range across the rest of northern Illinois.  The snow transitioned to freezing rain across many areas where one to two tenths of ice accumulated by the morning of December 30th.

Winter Weather in COOK, ILLINOIS
From 29-DEC-20 15:30:00 to 30-DEC-20 04:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in KENDALL, ILLINOIS
From 29-DEC-20 14:45:00 to 30-DEC-20 04:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in GRUNDY, ILLINOIS
From 29-DEC-20 14:00:00 to 30-DEC-20 03:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in WILL, ILLINOIS
From 29-DEC-20 14:30:00 to 30-DEC-20 04:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in LA SALLE, ILLINOIS
From 29-DEC-20 14:00:00 to 30-DEC-20 04:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in LIVINGSTON, ILLINOIS
From 29-DEC-20 13:30:00 to 30-DEC-20 03:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in KANKAKEE, ILLINOIS
From 29-DEC-20 14:00:00 to 29-DEC-20 22:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Storm in WINNEBAGO, ILLINOIS
From 29-DEC-20 15:15:00 to 30-DEC-20 05:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Storm in OGLE, ILLINOIS
From 29-DEC-20 15:00:00 to 30-DEC-20 05:30:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Storm in LEE, ILLINOIS
From 29-DEC-20 14:30:00 to 30-DEC-20 06:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in BOONE, ILLINOIS
From 29-DEC-20 15:15:00 to 30-DEC-20 05:15:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in DE KALB, ILLINOIS
From 29-DEC-20 14:45:00 to 30-DEC-20 06:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in MCHENRY, ILLINOIS
From 29-DEC-20 15:30:00 to 30-DEC-20 06:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in LAKE, ILLINOIS
From 29-DEC-20 15:45:00 to 30-DEC-20 06:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in KANE, ILLINOIS
From 29-DEC-20 15:15:00 to 30-DEC-20 06:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in DU PAGE, ILLINOIS
From 29-DEC-20 15:30:00 to 30-DEC-20 04:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter