Low pressure passed by to the west on the 16th into the 17th. Ahead of the low, plenty of cold air remained in place, and this led to a period of snow across northern and central Maryland during the morning of the 16th. Temperatures rose above freezing, causing precipitation to change to rain for most areas. However, across northern Maryland into the Allegheny Highlands, temperatures hovered very close to freezing and this led to some freezing rain later on the 16th into the morning of the 17th.

Winter Weather in CENTRAL AND EASTERN ALLEGANY, MARYLAND
From 16-DEC-19 01:00:00 to 16-DEC-19 10:00:00 (EST-5)
Reported by: Trained Spotter

Winter Weather in WASHINGTON, MARYLAND
From 16-DEC-19 01:00:00 to 16-DEC-19 10:00:00 (EST-5)
Reported by: Trained Spotter

Winter Weather in FREDERICK, MARYLAND
From 16-DEC-19 01:00:00 to 16-DEC-19 10:00:00 (EST-5)
Reported by: Trained Spotter

Winter Weather in CARROLL, MARYLAND
From 16-DEC-19 01:00:00 to 16-DEC-19 10:00:00 (EST-5)
Reported by: Trained Spotter

Winter Weather in NORTHERN BALTIMORE, MARYLAND
From 16-DEC-19 01:00:00 to 16-DEC-19 10:00:00 (EST-5)
Reported by: Trained Spotter

Winter Weather in NORTHWEST HARFORD, MARYLAND
From 16-DEC-19 01:00:00 to 16-DEC-19 10:00:00 (EST-5)
Reported by: Trained Spotter

Winter Weather in NORTHWEST MONTGOMERY, MARYLAND
From 16-DEC-19 01:00:00 to 16-DEC-19 10:00:00 (EST-5)
Reported by: Trained Spotter

Winter Weather in NORTHWEST HOWARD, MARYLAND
From 16-DEC-19 01:00:00 to 16-DEC-19 10:00:00 (EST-5)
Reported by: Trained Spotter

Winter Weather in SOUTHERN BALTIMORE, MARYLAND
From 16-DEC-19 01:00:00 to 16-DEC-19 10:00:00 (EST-5)
Reported by: Trained Spotter

Winter Weather in CENTRAL AND SOUTHEAST HOWARD, MARYLAND
From 16-DEC-19 01:00:00 to 16-DEC-19 10:00:00 (EST-5)
Reported by: Trained Spotter

Winter Weather in SOUTHEAST HARFORD, MARYLAND
From 16-DEC-19 01:00:00 to 16-DEC-19 10:00:00 (EST-5)
Reported by: Trained Spotter

Winter Weather in CENTRAL AND SOUTHEAST MONTGOMERY, MARYLAND
From 16-DEC-19 01:00:00 to 16-DEC-19 10:00:00 (EST-5)
Reported by: Trained Spotter

Winter Weather in CARROLL, MARYLAND
From 16-DEC-19 15:00:00 to 17-DEC-19 03:00:00 (EST-5)
Reported by: Trained Spotter

Winter Weather in NORTHERN BALTIMORE, MARYLAND
From 16-DEC-19 15:00:00 to 17-DEC-19 03:00:00 (EST-5)
Reported by: Trained Spotter

Winter Weather in NORTHWEST HARFORD, MARYLAND
From 16-DEC-19 15:00:00 to 17-DEC-19 03:00:00 (EST-5)
Reported by: Trained Spotter

Winter Weather in CENTRAL AND EASTERN ALLEGANY, MARYLAND
From 16-DEC-19 15:00:00 to 17-DEC-19 03:00:00 (EST-5)
Reported by: Trained Spotter

Winter Weather in WASHINGTON, MARYLAND
From 16-DEC-19 15:00:00 to 17-DEC-19 03:00:00 (EST-5)
Reported by: Trained Spotter

Ice Storm in EXTREME WESTERN ALLEGANY, MARYLAND
From 16-DEC-19 15:00:00 to 17-DEC-19 09:00:00 (EST-5)
Property damage: 10.00K
Reported by: COOP Observer

Ice amounts from freezing rain averaged to be around a quarter to a half inch across western Allegany County. However, there was a report of 0.68 of ice in Frostburg. Multiple trees were reported down across the Frostburg area due to ice accretion.

Winter Weather in FREDERICK, MARYLAND
From 16-DEC-19 15:00:00 to 17-DEC-19 03:00:00 (EST-5)
Reported by: Trained Spotter

There were a couple reports of higher ice amounts over the Catoctin Mountains. A report from near Thurmont was received of a half inch and 0.45 was reported near Sabillasville. Elsewhere, ice amounts ranged from a light glaze to around a tenth of an inch.