High pressure overhead of the region late on January 31st shifted eastward and offshore in the early morning of February 1st. A frontal boundary was positioned south of the region across southern Virginia, and a wave of low pressure developed along the boundary in the Ohio Valley on the morning of the 1st. This then moved eastward to the Virginia Tidewater by the evening hours. Warm air advection associated with this frontal wave led to widespread light to moderate accumulating snow for much of the state, with a coating to 1 inch reported across southern Maryland to 1 to 3 inches across central Maryland, and up to 6 inches reported in western Maryland.

Winter Storm in EXTREME WESTERN ALLEGANY, MARYLAND
From 01-FEB-19 02:00:00 to 01-FEB-19 18:00:00 (EST-5)
Reported by: Trained Spotter

Snowfall amounts of 5 to 6 inches were observed across western Allegany County, with a maximum of 6.1 inches reported near Frostburg.

Winter Weather in WASHINGTON, MARYLAND
From 01-FEB-19 07:00:00 to 01-FEB-19 18:00:00 (EST-5)
Reported by: Trained Spotter

Snowfall amounts of 2 to 4 inches were observed across Washington County, with 3.5 inches reported near Long Meadow.

Winter Weather in FREDERICK, MARYLAND
From 01-FEB-19 07:00:00 to 01-FEB-19 18:00:00 (EST-5)
Reported by: Trained Spotter

Snowfall amounts of 1 to 4 inches were observed across Frederick County, with 3.5 inches reported near Emmitsburg.

Winter Weather in CARROLL, MARYLAND
From 01-FEB-19 07:00:00 to 01-FEB-19 18:00:00 (EST-5)
Reported by: Trained Spotter

Snowfall amounts of 1 to 3 inches were observed across Carroll County, with 2.5 inches reported near Gamber.

Winter Weather in NORTHWEST MONTGOMERY, MARYLAND
From 01-FEB-19 07:00:00 to 01-FEB-19 18:00:00 (EST-5)
Reported by: Trained Spotter

Snowfall amounts of 1 to 2 inches were observed across northwest Montgomery County, with a maximum of 2.6 inches measured near Clarksburg.

Winter Weather in CENTRAL AND SOUTHEAST MONTGOMERY, MARYLAND
From 01-FEB-19 07:00:00 to 01-FEB-19 18:00:00 (EST-5)
Reported by: Trained Spotter

Snowfall amounts of 1 to 2 inches were observed across central and southeast Montgomery County, with 1.9 inches measured near Wheaton.

Winter Weather in NORTHWEST HOWARD, MARYLAND
From 01-FEB-19 07:00:00 to 01-FEB-19 18:00:00 (EST-5)
Reported by: Trained Spotter

Snowfall amounts of 1 to 2 inches were observed across northwest Howard County, with 1.3 inches measured near Sykesville.

Winter Weather in CENTRAL AND SOUTHEAST HOWARD, MARYLAND
From 01-FEB-19 07:00:00 to 01-FEB-19 18:00:00 (EST-5)
Reported by: Trained Spotter

Snowfall amounts of 1 to 2 inches were observed across central and southeast Howard County, with 2.0 inches measured near Columbia.

Winter Weather in PRINCE GEORGES, MARYLAND
From 01-FEB-19 07:00:00 to 01-FEB-19 18:00:00 (EST-5)
Reported by: Trained Spotter

Snowfall amounts of 1 to 1.5 inches were observed across Prince Georges County, with 1.4 inches measured near Calverton.

Winter Weather in ANNE ARUNDEL, MARYLAND
From 01-FEB-19 07:00:00 to 01-FEB-19 18:00:00 (EST-5)
Reported by: Trained Spotter

Snowfall amounts of 1 to 2 inches were observed across Anne Arundel County, with 2.2 inches measured near Ridgeway.

Winter Weather in SOUTHERN BALTIMORE, MARYLAND
From 01-FEB-19 07:00:00 to 01-FEB-19 18:00:00 (EST-5)
Reported by: Trained Spotter

Snowfall amounts of 1 to 2 inches were observed across southern Baltimore County, with 2.1 inches measured near Catonsville.

Winter Weather in NORTHERN BALTIMORE, MARYLAND
From 01-FEB-19 07:00:00 to 01-FEB-19 18:00:00 (EST-5)
Reported by: Trained Spotter

Snowfall amounts of 1 to 2 inches were observed across northern Baltimore County, with 1.8 inches measured near Long Green.

Winter Weather in CENTRAL AND EASTERN ALLEGANY, MARYLAND
From 01-FEB-19 07:00:00 to 01-FEB-19 18:00:00 (EST-5)
Reported by: Trained Spotter

Snowfall amounts of 4 to 5 inches were observed across central and eastern Allegany County, with 5.0 inches measured near Flintstone.

Winter Weather in NORTHWEST HARFORD, MARYLAND
From 01-FEB-19 07:00:00 to 01-FEB-19 18:00:00 (EST-5)
Reported by: Trained Spotter

Snowfall amounts of 1 to 2 inches were observed across northwest Harford County, with a local maximum of 2.7 inches measured near Norrisville.

Winter Weather in CENTRAL AND SOUTHEAST HOWARD, MARYLAND
From 01-FEB-19 07:00:00 to 01-FEB-19 18:00:00 (EST-5)
Reported by: Trained Spotter

Snowfall amounts of 1 to 2 inches were observed across central and southeast Harford County, with 1.5 inches measured near Bel Air.