Surface high pressure was located over the region on the morning of February 10th. This gave way to several waves of low pressure that moved near the region from the evening of the 10th and through the 12th. Several periods of mixed wintry precipitation affected the state of Maryland during this time, with snow accumulations ranging from a coating to half inch across southern Maryland to up to 6 inches across northern Maryland. Portions of the state north and west of Interstate 95 also saw ice accumulations that ranged from a quarter to half inch in some locations.

Winter Weather in CENTRAL AND SOUTHEAST HOWARD, MARYLAND
From 10-FEB-19 21:00:00 to 12-FEB-19 10:00:00 (EST-5)
Reported by: Trained Spotter

Snowfall amounts of up to 1.0 inch were observed across central and southeast Howard County, along with ice accumulations of up to 0.10 inches.

Winter Weather in ANNE ARUNDEL, MARYLAND
From 10-FEB-19 21:00:00 to 12-FEB-19 10:00:00 (EST-5)
Reported by: Trained Spotter

Snowfall amounts of up to 1.0 inch were observed across Anne Arundel County, along with a trace of ice accumulation.

Winter Weather in SOUTHERN BALTIMORE, MARYLAND
From 10-FEB-19 21:00:00 to 12-FEB-19 10:00:00 (EST-5)
Reported by: Trained Spotter

Snowfall amounts of between 0.5 and 1.5 inches were observed across southern Baltimore County, along with up to 0.10 inches of ice accumulation.

Winter Weather in SOUTHEAST HARFORD, MARYLAND
From 10-FEB-19 21:00:00 to 12-FEB-19 10:00:00 (EST-5)
Reported by: Trained Spotter

Snowfall amounts of between 3 and 5 inches were observed across southeast Harford County, along with up to 0.10 inches of ice accumulation.

Winter Weather in PRINCE GEORGES, MARYLAND
From 10-FEB-19 21:00:00 to 12-FEB-19 10:00:00 (EST-5)
Reported by: Trained Spotter

Snowfall amounts of up to 0.5 inches were observed across Prince Georges County.

Winter Weather in CENTRAL AND SOUTHEAST MONTGOMERY, MARYLAND
From 10-FEB-19 21:00:00 to 12-FEB-19 10:00:00 (EST-5)
Reported by: Trained Spotter

Snowfall amounts of up to 1.0 inch were observed across central and southeast Montgomery County, along with ice accumulations of up to 0.10 inches.

Winter Storm in NORTHWEST MONTGOMERY, MARYLAND
From 10-FEB-19 19:00:00 to 12-FEB-19 19:00:00 (EST-5)
Reported by: Trained Spotter

Snowfall amounts of up to 1 inch were observed across northwest Montgomery County. Ice accumulations of up to 0.30 inches were also observed, especially across the higher elevations.

Winter Storm in NORTHWEST HOWARD, MARYLAND
From 10-FEB-19 19:00:00 to 12-FEB-19 19:00:00 (EST-5)
Reported by: Trained Spotter

Snowfall amounts of up to 1 inch were observed across northwest Howard County. Ice accumulations of up to 0.40 inches were also observed, especially across the higher elevations.

Winter Storm in EXTREME WESTERN ALLEGANY, MARYLAND
From 10-FEB-19 21:00:00 to 12-FEB-19 19:00:00 (EST-5)
Reported by: Trained Spotter

Snowfall amounts of 1 to 3 inches were observed across western Allegany County, along with ice accumulations of between 0.33 and 0.50 inches.

Winter Storm in CENTRAL AND EASTERN ALLEGANY, MARYLAND
From 10-FEB-19 21:00:00 to 12-FEB-19 19:00:00 (EST-5)
Reported by: Trained Spotter

Snowfall amounts of 1 to 3 inches were observed across central and eastern Allegany County, along with ice accumulations of between 0.25 and 0.33 inches.

Winter Storm in WASHINGTON, MARYLAND
From 10-FEB-19 21:00:00 to 12-FEB-19 19:00:00 (EST-5)
Reported by: Trained Spotter

Snowfall amounts of 1 to 3 inches were observed across Washington County, along with ice accumulations of around 0.25 inches.

Winter Storm in FREDERICK, MARYLAND
From 10-FEB-19 21:00:00 to 12-FEB-19 19:00:00 (EST-5)
Reported by: Trained Spotter

Snowfall amounts of 1 to 8 inches were observed across Frederick County with the highest accumulations across the higher elevations in the northern portion of the county. Ice accumulations of up to 0.25 inches were also observed.

Winter Storm in CARROLL, MARYLAND
From 10-FEB-19 21:00:00 to 12-FEB-19 19:00:00 (EST-5)
Reported by: Trained Spotter

Snowfall amounts of 3 to 5 inches were observed across Carroll County, with the highest accumulations across the northern portion of the county. Ice accumulations of up to 0.25 inches were also observed.

Winter Storm in NORTHERN BALTIMORE, MARYLAND
From 10-FEB-19 21:00:00 to 12-FEB-19 19:00:00 (EST-5)
Reported by: Trained Spotter

Snowfall amounts of 2 to 4 inches were observed across northern Baltimore County. Ice accumulations of up to 0.25 inches were also observed.

Winter Storm in NORTHWEST HARFORD, MARYLAND
From 10-FEB-19 21:00:00 to 12-FEB-19 19:00:00 (EST-5)
Reported by: Trained Spotter

Snowfall amounts of 3 to 7 inches were observed across northwest Harford County. Ice accumulations of up to 0.25 inches were also observed.