An upper level disturbance along with an arctic cold front dropped southeast through the Tennessee Valley during the evening hours of the 20th.   Rain and drizzle along and ahead of the front quickly changed to snow for about a 3 to 4 hour period in northwest and north central Alabama between 5 and 9 pm.  Rain changed to snow later in northeast Alabama, between 7 and 9 pm before ending shortly after.  Snowfall amounts ranged from just a dusting to near one inch.  Temperatures plummeted into the lower to mid 20s, producing black ice on some roads, bridges and overpasses during the overnight and early morning hours.

Winter Weather in COLBERT, ALABAMA
From 20-JAN-11 16:53:00 to 20-JAN-11 19:35:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A dusting to just under one inch of snowfall fell across the county.  The highest amounts reported occurred in and around the Muscle Shoals area.

Winter Weather in LIMESTONE, ALABAMA
From 20-JAN-11 17:14:00 to 20-JAN-11 20:32:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A trace to one half of an inch of snowfall fell across the county. The highest recorded total occurred 4.3 miles west of Athens.

Winter Weather in MARSHALL, ALABAMA
From 20-JAN-11 17:40:00 to 20-JAN-11 21:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A trace to around one half of an inch was reported across the county. Albertville and Union Grove communities reported the most snow totaling 0.3 inches.

Winter Weather in MORGAN, ALABAMA
From 20-JAN-11 17:14:00 to 20-JAN-11 20:32:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A dusting to around one half of an inch of snowfall occurred across the county. 0.4 inches was reported 1.8 miles west southwest of Priceville.

Winter Weather in LAUDERDALE, ALABAMA
From 20-JAN-11 16:53:00 to 20-JAN-11 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A dusting to just over one inch of snowfall fell across the county. The highest totals were in the Rogersville and Killen communities. These communities respectively received 1.0 and 1.1 inches of snowfall.

Winter Weather in MADISON, ALABAMA
From 20-JAN-11 17:23:00 to 20-JAN-11 20:14:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Up to 1.0 inches of snow fell across the county. The highest reported totals occurred 0.2 miles norther of Madison and 2.0 miles east southeast of Hampton Cove.

Winter Weather in LAWRENCE, ALABAMA
From 20-JAN-11 17:00:00 to 20-JAN-11 19:30:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A trace to a few tenths of an inch of snowfall fell in portions of the county.

Winter Weather in DEKALB, ALABAMA
From 20-JAN-11 19:30:00 to 20-JAN-11 21:40:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A trace to a few tenths of an inch of snowfall occurred across the county.

Winter Weather in JACKSON, ALABAMA
From 20-JAN-11 19:30:00 to 20-JAN-11 21:40:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A trace to just over 1.0 inch of snowfall was reported across the county. The highest total of 1.2 inches was reported 8 miles north northeast of Woodville.