An intense area of low pressure tracked from Iowa into the eastern Great Lakes on Sunday, December 12th. The heaviest snow with this system remained well to the north across parts of Minnesota and Wisconsin: however, lighter snow ranging from 2 to 4 inches fell further south across central Illinois.  As the low deepened, strong northwesterly winds gusting over 50 mph at times developed, creating white-out conditions in many locations.  Sharply colder air streamed into the region behind the departing system, resulting in wind-chill values plunging well below zero into December 13th.

Winter Weather in MORGAN, ILLINOIS
From 12-DEC-10 06:00:00 to 13-DEC-10 15:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

Numerous traffic accidents occurred across Morgan County as a result of icy road conditions and poor visibility.

Blizzard in MCLEAN, ILLINOIS
From 12-DEC-10 03:00:00 to 13-DEC-10 15:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Numerous weather observers and automated weather equipment across McLean County reported winds in excess of 35mph and visibilities reduced to less than one quarter of a mile due to blowing snow.  Several traffic accidents were reported due to icy road conditions and poor visibility.  In addition, an elderly man died of cold exposure when he wandered away from his home in Arrowsmith.

Blizzard in DE WITT, ILLINOIS
From 12-DEC-10 05:00:00 to 13-DEC-10 15:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Numerous weather observers and automated weather equipment across DeWitt County reported winds in excess of 35mph and visibilities reduced to less than one quarter of a mile due to blowing snow.

Blizzard in FULTON, ILLINOIS
From 12-DEC-10 06:00:00 to 13-DEC-10 15:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Numerous weather observers and automated weather equipment across Fulton County reported winds in excess of 35mph and visibilities reduced to less than one quarter of a mile due to blowing snow.

Winter Weather in LAWRENCE, ILLINOIS
From 12-DEC-10 09:00:00 to 13-DEC-10 15:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

Numerous traffic accidents occurred across Lawrence County as a result of icy road conditions and poor visibility.

Blizzard in LOGAN, ILLINOIS
From 12-DEC-10 03:00:00 to 13-DEC-10 15:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Numerous weather observers and automated weather equipment across Logan County reported winds in excess of 35mph and visibilities reduced to less than one quarter of a mile due to blowing snow.  Several traffic accidents occurred because of the icy road conditions and poor visibility, including a 20-vehicle pile-up on I-55 between Williamsville and Elkhart that injured 3 people and closed the highway for several hours.

Winter Weather in SANGAMON, ILLINOIS
From 12-DEC-10 03:00:00 to 13-DEC-10 15:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

Numerous traffic accidents occurred across Sangamon County as a result of icy road conditions and poor visibility.

Winter Weather in CUMBERLAND, ILLINOIS
From 12-DEC-10 09:00:00 to 13-DEC-10 15:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

Numerous traffic accidents occurred across Cumberland County as a result of icy road conditions and poor visibility.

Blizzard in CHAMPAIGN, ILLINOIS
From 12-DEC-10 09:00:00 to 13-DEC-10 15:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Numerous weather observers and automated weather equipment across Champaign County reported winds in excess of 35mph and visibilities reduced to less than one quarter of a mile due to blowing snow.  Several traffic accidents occurred as a result of icy road conditions and poor visibility, including one that claimed the life of a woman west of Thomasboro.

Blizzard in TAZEWELL, ILLINOIS
From 12-DEC-10 07:00:00 to 13-DEC-10 15:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Numerous weather observers and automated weather equipment across Tazewell County reported winds in excess of 35mph and visibilities reduced to less than one quarter of a mile due to blowing snow.

Blizzard in STARK, ILLINOIS
From 12-DEC-10 07:00:00 to 13-DEC-10 15:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Numerous weather observers and automated weather equipment across Stark County reported winds in excess of 35mph and visibilities reduced to less than one quarter of a mile due to blowing snow.

Winter Weather in CRAWFORD, ILLINOIS
From 12-DEC-10 09:00:00 to 13-DEC-10 15:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

Numerous traffic accidents occurred across Crawford County as a result of icy road conditions and poor visibility.

Blizzard in VERMILION, ILLINOIS
From 12-DEC-10 09:00:00 to 13-DEC-10 15:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Numerous weather observers and automated weather equipment across Vermilion County reported winds in excess of 35mph and visibilities reduced to less than one quarter of a mile due to blowing snow.

Blizzard in PIATT, ILLINOIS
From 12-DEC-10 09:00:00 to 13-DEC-10 15:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Numerous weather observers and automated weather equipment across Piatt County reported winds in excess of 35mph and visibilities reduced to less than one quarter of a mile due to blowing snow.

Blizzard in WOODFORD, ILLINOIS
From 12-DEC-10 07:00:00 to 13-DEC-10 15:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Numerous weather observers and automated weather equipment across Woodford County reported winds in excess of 35mph and visibilities reduced to less than one quarter of a mile due to blowing snow.

Blizzard in KNOX, ILLINOIS
From 12-DEC-10 06:00:00 to 13-DEC-10 15:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Numerous weather observers and automated weather equipment across Knox County reported winds in excess of 35mph and visibilities reduced to less than one quarter of a mile due to blowing snow.

Blizzard in SCHUYLER, ILLINOIS
From 12-DEC-10 06:00:00 to 13-DEC-10 15:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Numerous weather observers and automated weather equipment across Schuyler County reported winds in excess of 35mph and visibilities reduced to less than one quarter of a mile due to blowing snow.

Blizzard in MASON, ILLINOIS
From 12-DEC-10 07:00:00 to 13-DEC-10 15:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Numerous weather observers and automated weather equipment across Mason County reported winds in excess of 35mph and visibilities reduced to less than one quarter of a mile due to blowing snow.

Blizzard in PEORIA, ILLINOIS
From 12-DEC-10 07:00:00 to 13-DEC-10 15:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Numerous weather observers and automated weather equipment across Peoria County reported winds in excess of 35mph and visibilities reduced to less than one quarter of a mile due to blowing snow.

Blizzard in MARSHALL, ILLINOIS
From 12-DEC-10 07:00:00 to 13-DEC-10 15:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Numerous weather observers and automated weather equipment across Marshall County reported winds in excess of 35mph and visibilities reduced to less than one quarter of a mile due to blowing snow.

Winter Weather in CLARK, ILLINOIS
From 12-DEC-10 09:00:00 to 13-DEC-10 15:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

Numerous traffic accidents occurred across Clark County as a result of icy road conditions and poor visibility.  I-70 just west of Casey was closed for about 7 hours due to an 8-vehicle pile-up.  Another accident along I-70 1 mile east of Casey injured 2 people.

Winter Weather in COLES, ILLINOIS
From 12-DEC-10 09:00:00 to 13-DEC-10 15:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

Numerous traffic accidents occurred across Coles County as a result of icy road conditions and poor visibility.  A woman was killed on I-57 about 2 miles north of Mattoon when she was hit by a car while trying to help free another stuck vehicle.