A strong clipper system developed over the Great Lakes March 6th and dove south across the Mid Atlantic on March 7th. Snow began along the western edge of the Allegheny Front shortly after midnight on March 7th and spread east overnight.
The highest snowfall reports came from Allegany County. Trained spotters in Frostburg, MD., reported 10 inches of snow. Snowfall amounts diminished further east, with an average of 1 to 3 inches reported across the Baltimore metro.

Winter Storm in EXTREME WESTERN ALLEGANY, MARYLAND
From 07-MAR-07 00:00:00 to 07-MAR-07 19:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained Spotters reported between 6 and 10 inches of snow.

Winter Weather in SOUTHERN BALTIMORE, MARYLAND
From 07-MAR-07 00:00:00 to 07-MAR-07 19:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A Broadcast Meteorologist reported between 1 and 2 inches of snow across the City of Baltimore.

Winter Weather in NORTHERN BALTIMORE, MARYLAND
From 07-MAR-07 00:00:00 to 07-MAR-07 19:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A Broadcast Meteorologist reported between 1 and 2 inches of snow across Northern Baltimore County.

Winter Storm in CENTRAL AND EASTERN ALLEGANY, MARYLAND
From 07-MAR-07 00:00:00 to 07-MAR-07 19:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained Spotters reported between 6 and 10 inches of snow.

Winter Weather in CHARLES, MARYLAND
From 07-MAR-07 00:00:00 to 07-MAR-07 19:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained Spotters reported between 1 and 2 inches of snow across Charles County.

Winter Weather in FREDERICK, MARYLAND
From 07-MAR-07 00:00:00 to 07-MAR-07 19:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained Spotters reported between 2 and 5 inches of snow across Frederick County.

Winter Weather in HARFORD, MARYLAND
From 07-MAR-07 00:00:00 to 07-MAR-07 19:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency Management Officials reported between 1 and 3 inches of snow across Harford County.

Winter Weather in HOWARD, MARYLAND
From 07-MAR-07 00:00:00 to 07-MAR-07 19:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Amateur Radio Operators reported between 1 and 2 inches of snow across Howard County.

Winter Weather in MONTGOMERY, MARYLAND
From 07-MAR-07 00:00:00 to 07-MAR-07 19:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Trained Spotters reported between 1 and 2 inches of snow across Montgomery County.

Winter Storm in WASHINGTON, MARYLAND
From 07-MAR-07 00:00:00 to 07-MAR-07 19:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained Spotters reported between 3 and 7 inches of snow.

Winter Weather in CARROLL, MARYLAND
From 07-MAR-07 00:00:00 to 07-MAR-07 19:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency Management Officials reported between 1 and 2 inches of snow across Carroll County.