A stationary frontal boundary extending from southern Kentucky to northern Texas served as the focusing mechanism for an overrunning snow event across portions of central and southeast Illinois from the afternoon of December 15th through the evening of December 16th.  Several waves of low pressure tracked along the boundary, bringing periods of wintry precipitation to the area.  Snow spread into central Illinois from southwest to northeast during the afternoon of December 15th, then continued through the evening before tapering off and temporarily coming to an end by the early morning of December 16th.  As another wave moved along the front, a second round of snow developed during the afternoon of the 16th...eventually ending as a period of light freezing rain.  Storm total snow accumulations were greatest just north of the I-70 corridor, where amounts of 6 to 9 inches were common from Shelbyville northeastward to Mattoon.  Snowfall decreased further north, with 2 to 3 inches occurring along the I-74 corridor.

Heavy Snow in COLES, ILLINOIS
From 15-DEC-19 14:30:00 to 17-DEC-19 00:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Weather observers reported 6 to 9 inches of snow across Coles County...including 9.5 inches in Mattoon and 6.4 inches in Charleston.  Numerous traffic accidents occurred due to snow-covered and slick roads.

Heavy Snow in CUMBERLAND, ILLINOIS
From 15-DEC-19 14:00:00 to 16-DEC-19 23:30:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Weather observers reported 5 to 7 inches of snow across Cumberland County...including 6.0 inches 3 miles north of Neoga and 5.1 inches in Neoga.  Numerous traffic accidents occurred due to snow-covered and slick roads.

Heavy Snow in EFFINGHAM, ILLINOIS
From 15-DEC-19 13:30:00 to 16-DEC-19 23:30:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Weather observers reported 5 to 8 inches of snow across Effingham County...including 8.0 inches in Effingham, 7.5 inches in Teutopolis, and 6.5 inches in Watson.  Numerous traffic accidents occurred due to snow-covered and slick roads.

Heavy Snow in MOULTRIE, ILLINOIS
From 15-DEC-19 14:30:00 to 17-DEC-19 00:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Weather observers reported 6 to 8 inches of snow across Moultrie County...including 6.0 inches in Sullivan.  Numerous traffic accidents occurred due to snow-covered and slick roads.

Heavy Snow in SHELBY, ILLINOIS
From 15-DEC-19 14:00:00 to 16-DEC-19 23:30:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Weather observers reported 6 to 8 inches of snow across Shelby County...including 7.5 inches in Shelbyville.  Numerous traffic accidents occurred due to snow-covered and slick roads.

Winter Weather in CHRISTIAN, ILLINOIS
From 15-DEC-19 14:00:00 to 16-DEC-19 23:30:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Weather observers reported 4 to 7 inches of snow across southern Christian County...including 7.0 inches in Pana and 5.8 inches in Morrisonville.  Numerous traffic accidents occurred due to snow-covered and slick roads.

Winter Weather in DOUGLAS, ILLINOIS
From 15-DEC-19 14:30:00 to 17-DEC-19 00:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Weather observers reported 4 to 7 inches of snow across southwestern Douglas County...including 6.8 inches in Arthur and 4.0 inches in Tuscola.  Numerous traffic accidents occurred due to snow-covered and slick roads.

Winter Weather in EDGAR, ILLINOIS
From 15-DEC-19 14:30:00 to 17-DEC-19 00:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Weather observers reported 4 to 6 inches of snow across western Edgar County...including 6.3 inches in Brocton.  Numerous traffic accidents occurred due to snow-covered and slick roads.

Winter Weather in MACON, ILLINOIS
From 15-DEC-19 14:30:00 to 17-DEC-19 00:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Weather observers reported 4 to 6 inches of snow across southern Macon County...including 6.0 inches in Macon.  Numerous traffic accidents occurred due to snow-covered and slick roads.

Winter Weather in SANGAMON, ILLINOIS
From 15-DEC-19 14:30:00 to 17-DEC-19 00:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Weather observers reported 4 to 6 inches of snow across Sangamon County...including 5.5 inches in Loami and 4.5 inches in Springfield.  Numerous traffic accidents occurred due to snow-covered and slick roads.

Winter Weather in JASPER, ILLINOIS
From 15-DEC-19 14:00:00 to 16-DEC-19 23:30:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Weather observers reported 4 to 6 inches of snow across Jasper County...including 6.2 inches in Newton.  Numerous traffic accidents occurred due to snow-covered and slick roads.

Winter Weather in CLARK, ILLINOIS
From 15-DEC-19 14:00:00 to 16-DEC-19 23:30:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Weather observers reported 4 to 6 inches of snow across western Clark County...including 5.0 inches in Casey.  Numerous traffic accidents occurred due to snow-covered and slick roads.