Low pressure to our west transferred its energy to a weak coastal low off the Mid-Atlantic Coast. High pressure to the north supplied the cold air and moisture from the low caused snow to develop.

Winter Weather in EXTREME WESTERN ALLEGANY, MARYLAND
From 17-FEB-18 13:00:00 to 17-FEB-18 21:00:00 (EST-5)
Reported by: Trained Spotter

Snowfall totaled up to 3 to 5 inches across western Allegany County. Ridgeley reported 5 inches and Frostburg reported 4 inches.

Winter Weather in WASHINGTON, MARYLAND
From 17-FEB-18 13:00:00 to 17-FEB-18 21:00:00 (EST-5)
Reported by: Trained Spotter

Snowfall totaled up to 2 inches in Hancock and near Long Meadow.

Winter Weather in FREDERICK, MARYLAND
From 17-FEB-18 13:00:00 to 17-FEB-18 21:00:00 (EST-5)
Reported by: NWS Employee

Snowfall totaled up to 2.9 inches near Thurmont and 2.1 inches in Frederick.

Winter Weather in NORTHWEST MONTGOMERY, MARYLAND
From 17-FEB-18 13:00:00 to 17-FEB-18 21:00:00 (EST-5)
Reported by: Trained Spotter

Snowfall averaged between 2 and 4 inches across northwest Montgomery County. A report of 3.1 inches was received from Clarksburg and 4.1 inches fell near Damascus.

Winter Weather in CENTRAL AND EASTERN ALLEGANY, MARYLAND
From 17-FEB-18 13:00:00 to 17-FEB-18 21:00:00 (EST-5)
Reported by: COOP Observer

Snowfall totaled up to 3.0 inches in Cumberland.

Winter Weather in CENTRAL AND SOUTHEAST MONTGOMERY, MARYLAND
From 17-FEB-18 13:00:00 to 17-FEB-18 21:00:00 (EST-5)
Reported by: Trained Spotter

Snowfall averaged between 1 and 2 inches across southeast Montgomery County.

Winter Weather in CENTRAL AND SOUTHEAST HOWARD, MARYLAND
From 17-FEB-18 13:00:00 to 17-FEB-18 21:00:00 (EST-5)
Reported by: Trained Spotter

Snowfall totaled up to 2.0 inches in Ellicott City and 2.5 inches in Columbia.

Winter Weather in NORTHERN BALTIMORE, MARYLAND
From 17-FEB-18 13:00:00 to 17-FEB-18 21:00:00 (EST-5)
Reported by: Trained Spotter

Snowfall averaged between 2 and 3 inches across northern Baltimore County.

Winter Weather in NORTHWEST HARFORD, MARYLAND
From 17-FEB-18 13:00:00 to 17-FEB-18 21:00:00 (EST-5)
Reported by: Trained Spotter

Snowfall totaled up to 2.5 inches near Norrisville.

Winter Weather in SOUTHEAST HARFORD, MARYLAND
From 17-FEB-18 13:00:00 to 17-FEB-18 21:00:00 (EST-5)
Reported by: Trained Spotter

Snowfall totaled up to 2.0 inches near Bynum.

Winter Weather in ANNE ARUNDEL, MARYLAND
From 17-FEB-18 13:00:00 to 17-FEB-18 21:00:00 (EST-5)
Reported by: Trained Spotter

Snowfall totaled up to 2.0 inches near BWI Airport and 1.6 inches near Fort Meade. Snowfall averaged between 1 and 2 inches across the county.

Winter Weather in SOUTHERN BALTIMORE, MARYLAND
From 17-FEB-18 13:00:00 to 17-FEB-18 21:00:00 (EST-5)
Reported by: Trained Spotter

Snowfall averaged between 2 and 3 inches across southern Baltimore County.

Winter Weather in CARROLL, MARYLAND
From 17-FEB-18 13:00:00 to 17-FEB-18 21:00:00 (EST-5)
Reported by: Trained Spotter

Snowfall totaled up to 2.4 inches in Oakland and near Eldersburg. Snowfall averaged between 1 and 3 inches across the county.

Winter Weather in NORTHWEST HOWARD, MARYLAND
From 17-FEB-18 13:00:00 to 17-FEB-18 21:00:00 (EST-5)
Reported by: Trained Spotter

Snowfall totaled up to 3.0 inches near Gaither.