During the period of January 12-15, 2007 an arctic cold front moved slowly through the region, bringing a shallow arctic airmass. The front became nearly stationary across central Illinois, while several upper level disturbances moved along the boundary. This set up several rounds of freezing rain, sleet and snow that affected eastern Iowa, northwest and western Illinois and northeast Missouri. The main upper level trough then pushed through the region late in the period, bringing colder air with it, and changing the mixed precipitation to all snow. By the end of the event, northeast Iowa received 2-4 inches of snow, eastern Iowa and northwest Illinois picked up 1-3 inches of snow, along with ice accumulations of less than 1/4 inch. A portion of northeast Missouri into western Illinois was plagued by an ice storm, with 1/4 to 3/4 inch ice accumulations.

Winter Weather in WARREN, ILLINOIS
From 12-JAN-07 09:00:00 to 15-JAN-07 17:30:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A spotter measured 1/8 inch sleet accumulations.

Ice Storm in HANCOCK, ILLINOIS
From 12-JAN-07 07:15:00 to 15-JAN-07 16:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter measured 1/4 to 3/4 inch ice and sleet accumulations.

Ice Storm in HENDERSON, ILLINOIS
From 12-JAN-07 07:30:00 to 15-JAN-07 17:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported 1/4 to 3/4 inch ice and sleet accumulations.

Ice Storm in MCDONOUGH, ILLINOIS
From 12-JAN-07 07:55:00 to 15-JAN-07 17:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A spotter measured 1/4 to 3/4 inch ice and sleet accumulations. Some large tree branches were broken by the weight of the ice in the city of Macomb.

Winter Weather in MERCER, ILLINOIS
From 13-JAN-07 13:00:00 to 15-JAN-07 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

One to three inches of snow, combined with ice accumulations of less than 1/4 inch.

Winter Weather in HENRY, ILLINOIS
From 13-JAN-07 17:00:00 to 15-JAN-07 18:30:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

One to three inches of snow, combined with ice accumulations of less than 1/4 inch. According to the Cambridge Chronicle newspaper, a number of limbs were broken off trees due to the ice in Cambridge.

Winter Weather in JO DAVIESS, ILLINOIS
From 13-JAN-07 16:00:00 to 15-JAN-07 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

One to three inches of snow, combined with ice accumulations of less than 1/4 inch.

Winter Weather in BUREAU, ILLINOIS
From 13-JAN-07 17:00:00 to 15-JAN-07 17:45:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

One to three inches of snow, combined with ice accumulations of less than 1/4 inch.

Winter Weather in STEPHENSON, ILLINOIS
From 13-JAN-07 21:00:00 to 15-JAN-07 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

One to three inches of snow, combined with ice accumulations of less than 1/4 inch.

Winter Weather in CARROLL, ILLINOIS
From 13-JAN-07 19:00:00 to 15-JAN-07 19:30:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

One to three inches of snow, combined with ice accumulations of less than 1/4 inch.

Winter Weather in WHITESIDE, ILLINOIS
From 13-JAN-07 16:00:00 to 15-JAN-07 19:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

One to three inches of snow, combined with ice accumulations of less than 1/4 inch.

Winter Weather in PUTNAM, ILLINOIS
From 13-JAN-07 17:00:00 to 15-JAN-07 17:45:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

One to three inches of snow, combined with ice accumulations of less than 1/4 inch.

Winter Weather in ROCK ISLAND, ILLINOIS
From 13-JAN-07 15:45:00 to 15-JAN-07 21:50:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

One to three inches of snow, combined with ice accumulations of less than 1/4 inch.