A strong upper level low pressure system moved out of California and then to southwest Missouri and into northern Indiana December 21-22, 2013. This path of the low produced heavy snowfall across extreme northwest Illinois where 5 to 6 inches was common. The highest accumulation of 6.2 inches was reported by a trained spotter 6 miles southwest of Schapville in Jo Daviess county. In western Illinois snowfall was less than 2 inches but was mixed with freezing rain and sleet. Ice accumulations of 1 to 2 tenths of an inch was reported in many areas. However, a trained spotter in Macomb in McDonough county measured a quarter of an inch of ice.

Winter Weather in BUREAU, ILLINOIS
From 21-DEC-13 14:00:00 to 22-DEC-13 07:45:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported a tenth of an inch of ice accumulation in Princeton, along with 1.5 inches of snow.

Winter Storm in CARROLL, ILLINOIS
From 21-DEC-13 20:00:00 to 22-DEC-13 08:45:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter measured 6.0 inches of snow near Mount Carroll.

Winter Weather in HENRY, ILLINOIS
From 21-DEC-13 16:00:00 to 22-DEC-13 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spottere reported 3.0 inches of snow just east of New Windsor along with a mix of some sleet and freezing rain.

Winter Weather in HANCOCK, ILLINOIS
From 21-DEC-13 12:00:00 to 22-DEC-13 06:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter estimated 2.0 inches of snow 4 miles southeast of Fort Madison.

Winter Weather in HENDERSON, ILLINOIS
From 21-DEC-13 12:00:00 to 22-DEC-13 07:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

The COOP observer near Gladstone reported 4.0 inches of snow.

Winter Storm in JO DAVIESS, ILLINOIS
From 21-DEC-13 21:00:00 to 22-DEC-13 09:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter measured 6.2 inches of snow 6 miles southwest of Schapville.

Winter Storm in MCDONOUGH, ILLINOIS
From 21-DEC-13 12:00:00 to 22-DEC-13 06:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported a quarter of an inch of ice accumulation in Macomb.

Winter Weather in MERCER, ILLINOIS
From 21-DEC-13 17:00:00 to 22-DEC-13 07:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter measured 3.5 inches of snow at Aledo.

Winter Weather in PUTNAM, ILLINOIS
From 21-DEC-13 15:00:00 to 22-DEC-13 07:45:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in ROCK ISLAND, ILLINOIS
From 21-DEC-13 18:00:00 to 22-DEC-13 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter measured 4.5 inches of snow in Rock Island.

Winter Storm in STEPHENSON, ILLINOIS
From 21-DEC-13 20:45:00 to 22-DEC-13 09:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported a tenth of an inch of ice accumulation in Freeport, along with 5.4 inches of snow.

Winter Weather in WARREN, ILLINOIS
From 21-DEC-13 15:00:00 to 22-DEC-13 07:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter measured 2.0 inches of snow at Monmouth along with a mix of some sleet and freezing rain.

Winter Storm in WHITESIDE, ILLINOIS
From 21-DEC-13 19:00:00 to 22-DEC-13 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter measured 5.5 inches of snow near Fulton.