A wave of low pressure passed by to the south on the 20th. At the same time, high pressure was building to the north and this caused cold air to filter in from New England. Rain changed to a wintry mix on the 20th. A light wintry mix continued for all areas on the night of the 20th. Coastal low pressure developed along the Mid-Atlantic Coast on the morning of the 21st. This caused a round of heavier precipitation to fall mainly in the form of snow. The snow tapered off later in the day as the low moved off to the north and east.

Winter Weather in ARLINGTON, VIRGINIA
From 20-MAR-18 12:00:00 to 21-MAR-18 13:00:00 (EST-5)
Reported by: Trained Spotter

A wintry mix occurred on the 20th before a round of heavier snowfall developed during the morning of the 21st. Snowfall totaled up to 4.0 inches at Reagan National and 3.0 inches near Barcroft.

Winter Weather in NELSON, VIRGINIA
From 20-MAR-18 19:00:00 to 21-MAR-18 13:00:00 (EST-5)
Reported by: Trained Spotter

A wintry mix occurred on the night of the 20th before a round of heavier snowfall developed during the morning of the 21st. Snowfall totaled up to 4.0 inches about four miles east of Wintergreen and 3.8 inches near Nellysford.

Winter Weather in STAFFORD, VIRGINIA
From 20-MAR-18 19:00:00 to 21-MAR-18 13:00:00 (EST-5)
Reported by: Trained Spotter

A wintry mix occurred on the night of the 20th before a round of heavier snowfall developed during the morning of the 21st. Snowfall totaled up to 4.0 inches near Stafford and 2.2 inches near White Oak.

Winter Storm in PAGE, VIRGINIA
From 20-MAR-18 12:00:00 to 21-MAR-18 13:00:00 (EST-5)
Reported by: Trained Spotter

A wintry mix occurred on the 20th before a round of heavier snow developed on the morning of the 21st. Snowfall totaled up to 6.0 inches near Honeyville and Ida.

Winter Storm in RAPPAHANNOCK, VIRGINIA
From 20-MAR-18 12:00:00 to 21-MAR-18 13:00:00 (EST-5)
Reported by: Trained Spotter

A wintry mix occurred on the 20th before a round of heavier snow developed on the morning of the 21st. Snowfall was estimated to be between 3 and 6 inches based on observations nearby.

Winter Storm in CULPEPER, VIRGINIA
From 20-MAR-18 12:00:00 to 21-MAR-18 13:00:00 (EST-5)
Reported by: Trained Spotter

A wintry mix occurred on the 20th before a round of heavier snow developed on the morning of the 21st. Snowfall was estimated to be between 3 and 6 inches based on observations nearby.

Winter Storm in MADISON, VIRGINIA
From 20-MAR-18 12:00:00 to 21-MAR-18 13:00:00 (EST-5)
Reported by: Trained Spotter

A wintry mix occurred on the 20th before a round of heavier snow developed on the morning of the 21st. Snowfall totaled up to 6.2 inches near Madison.

Winter Weather in SOUTHERN FAUQUIER, VIRGINIA
From 20-MAR-18 19:00:00 to 21-MAR-18 13:00:00 (EST-5)
Reported by: NWS Employee

A wintry mix occurred on the night of the 20th before a round of heavier snowfall developed during the morning of the 21st. Snowfall totaled up to 2.5 inches in Opal.

Winter Storm in GREENE, VIRGINIA
From 20-MAR-18 12:00:00 to 21-MAR-18 13:00:00 (EST-5)
Reported by: Trained Spotter

A wintry mix occurred on the 20th before a round of heavier snow developed on the morning of the 21st. Snowfall totaled up to 5.5 inches near Amicus and 5.0 inches near Stanardsville.

Winter Storm in ORANGE, VIRGINIA
From 20-MAR-18 12:00:00 to 21-MAR-18 13:00:00 (EST-5)
Reported by: Trained Spotter

A wintry mix occurred on the 20th before a round of heavier snow developed on the morning of the 21st. Snowfall totaled up to 6.0 inches about 1 mile to the north-northwest of Barboursville. Snowfall was estimated to average between 3 and 6 inches across the county based on observations nearby.

Winter Storm in ALBEMARLE, VIRGINIA
From 20-MAR-18 12:00:00 to 21-MAR-18 13:00:00 (EST-5)
Reported by: Trained Spotter

A wintry mix occurred on the 20th before a round of heavier snow developed on the morning of the 21st. Snowfall totaled up to 6.4 inches near Earlysville and 5.0 inches near Crozet, Free Union, and Hollymead.

Winter Storm in NORTHERN VIRGINIA BLUE RIDGE, VIRGINIA
From 20-MAR-18 12:00:00 to 21-MAR-18 13:00:00 (EST-5)
Reported by: Trained Spotter

A wintry mix occurred on the 20th before a round of heavier snow developed on the morning of the 21st. Snowfall was estimated to be between 4 and 8 inches based on observations nearby.

Winter Storm in FREDERICK, VIRGINIA
From 20-MAR-18 05:00:00 to 21-MAR-18 10:00:00 (EST-5)
Reported by: Trained Spotter

A wintry mix occurred on the 20th before a round of heavier snow developed on the morning of the 21st. Snowfall totaled up to 4.8 inches near Stephens City.

Winter Storm in FAIRFAX, VIRGINIA
From 20-MAR-18 12:00:00 to 21-MAR-18 13:00:00 (EST-5)
Reported by: Trained Spotter

A wintry mix occurred on the 20th before a round of heavier snow developed on the morning of the 21st. Snowfall totaled up to 5.0 inches near Chantilly, Reston, Herdon and Vienna.

Winter Storm in PRINCE WILLIAM, VIRGINIA
From 20-MAR-18 12:00:00 to 21-MAR-18 13:00:00 (EST-5)
Reported by: Trained Spotter

A wintry mix occurred on the 20th before a round of heavier snow developed on the morning of the 21st. Snowfall totaled up to 5.3 near Independent Hill and 4.6 inches near Bull Run.

Winter Storm in WESTERN LOUDOUN, VIRGINIA
From 20-MAR-18 12:00:00 to 21-MAR-18 13:00:00 (EST-5)
Reported by: Trained Spotter

A wintry mix occurred on the 20th before a round of heavier snow developed on the morning of the 21st. Snowfall totaled up to 7.0 inches in Lovettsville and 5.5 inches in Hillsboro.

Winter Storm in CENTRAL VIRGINIA BLUE RIDGE, VIRGINIA
From 20-MAR-18 12:00:00 to 21-MAR-18 10:00:00 (EST-5)
Reported by: Trained Spotter

A wintry mix occurred on the 20th before a round of heavier snow developed on the morning of the 21st. Snowfall was estimated to be between 4 and 8 inches based on observations nearby.

Winter Storm in AUGUSTA, VIRGINIA
From 20-MAR-18 12:00:00 to 21-MAR-18 10:00:00 (EST-5)
Reported by: Trained Spotter

A wintry mix occurred on the 20th before a round of heavier snow developed on the morning of the 21st. Snowfall totaled up to 10.8 inches near Fishersville and 10.5 inches near Moscow. Snowfall reports averaged to be between 6 and 12 inches across the county.

Winter Storm in ROCKINGHAM, VIRGINIA
From 20-MAR-18 12:00:00 to 21-MAR-18 10:00:00 (EST-5)
Reported by: Trained Spotter

A wintry mix occurred on the 20th before a round of heavier snow developed on the morning of the 21st. Snowfall totaled up to 8.6 inches near Sparkling Springs and 6.3 inches near Dale Enterprise.

Winter Storm in SHENANDOAH, VIRGINIA
From 20-MAR-18 12:00:00 to 21-MAR-18 10:00:00 (EST-5)
Reported by: Trained Spotter

A wintry mix occurred on the 20th before a round of heavier snow developed on the morning of the 21st. Snowfall totaled up to 5.0 inches in Woodstock.

Winter Storm in EASTERN LOUDOUN, VIRGINIA
From 20-MAR-18 12:00:00 to 21-MAR-18 13:00:00 (EST-5)
Reported by: Trained Spotter

A wintry mix occurred on the 20th before a round of heavier snow developed on the morning of the 21st. Snowfall totaled up to 5.2 inches at Dulles International and 5.0 inches near Leesburg.

Winter Storm in NORTHERN FAUQUIER, VIRGINIA
From 20-MAR-18 12:00:00 to 21-MAR-18 13:00:00 (EST-5)
Reported by: Trained Spotter

A wintry mix occurred on the 20th before a round of heavier snow developed on the morning of the 21st. Snowfall was estimated to be between 3 and 6 inches based on observations nearby.

Winter Storm in CLARKE, VIRGINIA
From 20-MAR-18 12:00:00 to 21-MAR-18 13:00:00 (EST-5)
Reported by: Trained Spotter

A wintry mix occurred on the 20th before a round of heavier snow developed on the morning of the 21st. Snowfall totaled up to 5.7 inches near Berryville.

Winter Storm in WARREN, VIRGINIA
From 20-MAR-18 12:00:00 to 21-MAR-18 13:00:00 (EST-5)
Reported by: Trained Spotter

A wintry mix occurred on the 20th before a round of heavier snow developed on the morning of the 21st. Snowfall totaled up to 6.0 inches near Linden.

Winter Storm in WESTERN HIGHLAND, VIRGINIA
From 20-MAR-18 12:00:00 to 21-MAR-18 10:00:00 (EST-5)
Reported by: Trained Spotter

A wintry mix occurred on the 20th before a round of heavier snow developed on the morning of the 21st. Snowfall was estimated to be between 10 and 15 inches based on observations nearby.

Winter Storm in EASTERN HIGHLAND, VIRGINIA
From 20-MAR-18 12:00:00 to 21-MAR-18 10:00:00 (EST-5)
Reported by: Trained Spotter

A wintry mix occurred on the 20th before a round of heavier snow developed on the morning of the 21st. Snowfall totaled up to 12.9 inches near Mustoe.

Winter Weather in KING GEORGE, VIRGINIA
From 20-MAR-18 19:00:00 to 21-MAR-18 13:00:00 (EST-5)
Reported by: Trained Spotter

A wintry mix occurred on the night of the 20th before a round of heavier snowfall developed during the morning of the 21st. Snowfall was estimated to be between 2 and 4 inches across the county.

Winter Weather in SPOTSYLVANIA, VIRGINIA
From 20-MAR-18 19:00:00 to 21-MAR-18 13:00:00 (EST-5)
Reported by: Trained Spotter

A wintry mix occurred on the night of the 20th before a round of heavier snowfall developed during the morning of the 21st. Snowfall totaled up to 4.5 inches near Dunavant and 4.3 inches near Logan.