High pressure was slow to move off the Atlantic Coast and sub freezing air was trapped on the leeward side of the Appalachian Mountains.  Southwest flow a few thousand feet above the surface brought above freezing temperatures and led to freezing rain and accumulating ice in the Mid Atlantic.

Winter Weather in HOWARD, MARYLAND
From 28-JAN-13 04:00:00 to 28-JAN-13 10:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Ice accumulation of around a trace to a tenth inch was reported at surrounding locations.

Winter Weather in PRINCE GEORGES, MARYLAND
From 28-JAN-13 04:00:00 to 28-JAN-13 08:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Ice accumulation of around a trace to a tenth inch was reported at surrounding locations.

Winter Weather in ANNE ARUNDEL, MARYLAND
From 28-JAN-13 04:00:00 to 28-JAN-13 08:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Ice accumulation of around a trace to a tenth inch was reported at Severn and surrounding locations.

Winter Weather in CHARLES, MARYLAND
From 28-JAN-13 04:00:00 to 28-JAN-13 08:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Ice accumulation of around a trace was reported at Bryans Road and surrounding locations.

Winter Weather in CALVERT, MARYLAND
From 28-JAN-13 04:00:00 to 28-JAN-13 08:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Ice accumulation of around a trace was reported at surrounding locations.

Winter Weather in ST. MARY'S, MARYLAND
From 28-JAN-13 04:00:00 to 28-JAN-13 08:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Ice accumulation of around a trace was reported at Ridge and surrounding locations.

Winter Weather in NORTHERN BALTIMORE, MARYLAND
From 28-JAN-13 05:00:00 to 28-JAN-13 12:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Ice accumulation of around a trace was reported at Oella and surrounding locations.

Winter Weather in SOUTHERN BALTIMORE, MARYLAND
From 28-JAN-13 05:00:00 to 28-JAN-13 10:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Ice accumulation of around a trace was reported at surrounding locations.

Winter Weather in HARFORD, MARYLAND
From 28-JAN-13 05:00:00 to 28-JAN-13 12:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Ice accumulation of around a trace was reported at surrounding locations.

Winter Weather in EXTREME WESTERN ALLEGANY, MARYLAND
From 28-JAN-13 03:00:00 to 28-JAN-13 12:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Ice accumulation of around two tenths inch was reported at Eckhart Mines and surrounding locations.

Winter Weather in CENTRAL AND EASTERN ALLEGANY, MARYLAND
From 28-JAN-13 03:00:00 to 28-JAN-13 12:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Ice accumulation of around a trace to a tenth inchwas reported at Cumberland and surrounding locations.

Winter Weather in WASHINGTON, MARYLAND
From 28-JAN-13 03:00:00 to 28-JAN-13 12:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Ice accumulation of around a trace was reported at surrounding locations.

Winter Weather in FREDERICK, MARYLAND
From 28-JAN-13 04:00:00 to 28-JAN-13 12:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Ice accumulation of around a trace was reported at Ballenger Creek and surrounding locations.

Winter Weather in CARROLL, MARYLAND
From 28-JAN-13 04:00:00 to 28-JAN-13 12:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Ice accumulation of around a trace to a tenth inch was reported at Westminster and surrounding locations.

Winter Weather in MONTGOMERY, MARYLAND
From 28-JAN-13 04:00:00 to 28-JAN-13 10:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Ice accumulation of around a trace to a tenth inch was reported at Gaithersburg and surrounding locations.