Low pressure tracked up the Appalachians. Warm and moist air overran the colder air in place, resulting in precipitation. There was a cold layer near the surface that caused freezing rain.

Winter Weather in PRINCE GEORGES, MARYLAND
From 07-FEB-18 03:00:00 to 07-FEB-18 09:00:00 (EST-5)
Reported by: Other Federal Agency

A trace of ice was reported at Andrews Air Force Base.

Winter Weather in ANNE ARUNDEL, MARYLAND
From 07-FEB-18 03:00:00 to 07-FEB-18 09:00:00 (EST-5)
Reported by: CoCoRaHS

A trace of ice was reported at BWI Airport and ice totaled up to a hundredth of an inch at Ross cove.

Winter Weather in NORTHWEST MONTGOMERY, MARYLAND
From 07-FEB-18 03:00:00 to 07-FEB-18 14:00:00 (EST-5)
Reported by: Emergency Manager

A tenth of an inch of ice was reported in Clarksburg.

Winter Weather in CENTRAL AND SOUTHEAST MONTGOMERY, MARYLAND
From 07-FEB-18 03:00:00 to 07-FEB-18 09:00:00 (EST-5)
Reported by: Trained Spotter

A trace of ice was reported at Woodside Park. Ice accumulations from a trace up to five hundredths of an inch were reported across southeastern Montgomery County.

Winter Weather in FREDERICK, MARYLAND
From 07-FEB-18 03:00:00 to 07-FEB-18 14:00:00 (EST-5)
Reported by: Trained Spotter

Ice accumulation was around fifteen hundredths of an inch at Distant View and near New Market. Ice accumulations around one to two tenths were reported across the county, but one-half inch of ice did fall in the higher elevations near Thurmont.

Winter Weather in CARROLL, MARYLAND
From 07-FEB-18 03:00:00 to 07-FEB-18 14:00:00 (EST-5)
Reported by: Trained Spotter

Ice accumulations from a trace to around one-tenth of an inch were reported across the county.

Winter Weather in NORTHERN BALTIMORE, MARYLAND
From 07-FEB-18 03:00:00 to 07-FEB-18 14:00:00 (EST-5)
Reported by: Trained Spotter

Ice accumulations from a trace to around one-tenth of an inch were reported across northern Baltimore county.

Winter Storm in EXTREME WESTERN ALLEGANY, MARYLAND
From 07-FEB-18 03:00:00 to 07-FEB-18 14:00:00 (EST-5)
Reported by: Trained Spotter

Ice totaled up to four tenths of an inch near Ridgeley and a quarter inch near Frostburg.

Winter Storm in CENTRAL AND EASTERN ALLEGANY, MARYLAND
From 07-FEB-18 03:00:00 to 07-FEB-18 14:00:00 (EST-5)
Reported by: Trained Spotter

Ice totaled up to a quarter inch at Cumberland Heights.

Winter Weather in SOUTHERN BALTIMORE, MARYLAND
From 07-FEB-18 03:00:00 to 07-FEB-18 14:00:00 (EST-5)
Reported by: Trained Spotter

Ice accumulations from a trace to around one-tenth of an inch were reported across southern Baltimore county.

Winter Weather in NORTHWEST HOWARD, MARYLAND
From 07-FEB-18 03:00:00 to 07-FEB-18 14:00:00 (EST-5)
Reported by: Trained Spotter

Ice accumulations from a trace to around one-tenth of an inch were reported across northwest Howard County.

Winter Weather in CENTRAL AND SOUTHEAST HOWARD, MARYLAND
From 07-FEB-18 03:00:00 to 07-FEB-18 09:00:00 (EST-5)
Reported by: Trained Spotter

Ice accumulations from a trace to around five hundredths of an inch were reported across southeast Howard County.

Winter Weather in NORTHWEST HARFORD, MARYLAND
From 07-FEB-18 03:00:00 to 07-FEB-18 14:00:00 (EST-5)
Reported by: CoCoRaHS

Ice accumulated to around seventeen hundredths of an inch near Norrisville.

Winter Weather in SOUTHEAST HARFORD, MARYLAND
From 07-FEB-18 03:00:00 to 07-FEB-18 09:00:00 (EST-5)
Reported by: Trained Spotter

Ice accumulations between a trace and a tenth of an inch were estimated based on observations nearby.

Winter Weather in CALVERT, MARYLAND
From 07-FEB-18 03:00:00 to 07-FEB-18 09:00:00 (EST-5)
Reported by: Trained Spotter

A trace of ice was reported at Willow Beach Colony.

Winter Weather in CHARLES, MARYLAND
From 07-FEB-18 03:00:00 to 07-FEB-18 09:00:00 (EST-5)
Reported by: Trained Spotter

A glaze of ice was estimated based on observations nearby.

Winter Storm in WASHINGTON, MARYLAND
From 07-FEB-18 03:00:00 to 07-FEB-18 14:00:00 (EST-5)
Reported by: Trained Spotter

Ice totaled up to four tenths of an inch near Long Meadow. A quarter inch of ice was reported at Hagerstown and Maugansville.