A strong cold front crossed the region on the afternoon of March 15th, ushering in drastically colder temperatures. A low pressure system approached the region that night and moved north along the Atlantic coast on March 16th. As the low approached the region early on the 16th, precipitation became widespread and continued through much day.
Warm air briefly surged ahead of the low pressure system, allowing precipitation to begin in the form of rain. Several roads were closed due to flooding across Anne Arundel, St. Mary���s and Northern Baltimore Counties.
Colder air was brought into the region by the low. This forced rain to change to snow and sleet before changing to all snow. Snowfall amounts ranged from 2 to 10 inches. Hazardous driving conditions led to numerous minor car accidents. A vehicle in President Bush���s motorcade traveling from Washington DC to the Camp David presidential retreat collided with another car along Interstate 270 in Urbana, MD., in Frederick County. No injuries were reported.

Flood in ANNE ARUNDEL, MARYLAND
From 16-MAR-07 14:00:00 to 16-MAR-07 16:00:00 (EST-5)
Location: GLEN BURNIE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

A Newspaper reported that West Furnace Branch Road was closed due to flooding.

Winter Storm in CENTRAL AND EASTERN ALLEGANY, MARYLAND
From 16-MAR-07 07:00:00 to 16-MAR-07 17:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained Spotters reported between 4 and 8 inches of snow across Allegany County.

Winter Storm in EXTREME WESTERN ALLEGANY, MARYLAND
From 16-MAR-07 07:00:00 to 16-MAR-07 17:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained Spotters reported between 4 and 8 inches of snow across Allegany County.

Winter Weather in CARROLL, MARYLAND
From 16-MAR-07 07:00:00 to 16-MAR-07 17:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained Spotters reported between 2 and 6 inches of snow across Carroll County. Newspapers reported dozens of minor traffic accidents.

Winter Weather in HARFORD, MARYLAND
From 16-MAR-07 07:00:00 to 16-MAR-07 17:00:00 (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 Harford County.

Winter Weather in HOWARD, MARYLAND
From 16-MAR-07 07:00:00 to 16-MAR-07 17:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained Spotters reported between 1 and 3 inches of snow across Howard County.

Winter Storm in FREDERICK, MARYLAND
From 16-MAR-07 07:00:00 to 16-MAR-07 17:00:00 (EST-5)
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained Spotters reported between 4 and 10 inches of snow across Frederick County. Numerous traffic accidents were reported due to winter weather. A vehicle in President Bush���s motorcade traveling from Washington DC to the Camp David Presidential retreat collided with another car along Interstate 270 in Urbana, MD. No injuries were reported.

Winter Storm in WASHINGTON, MARYLAND
From 16-MAR-07 07:00:00 to 16-MAR-07 17:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained Spotters reported between 4 and 10 inches of snow across Washington County.

Winter Weather in SOUTHERN BALTIMORE, MARYLAND
From 16-MAR-07 07:00:00 to 16-MAR-07 17:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained Spotters reported between 1 and 3 inches of snow across southern Baltimore County. Newspapers reported early school closings due to the weather.

Flood in BALTIMORE, MARYLAND
From 16-MAR-07 13:00:00 to 16-MAR-07 15:00:00 (EST-5)
Location: WOODLAWN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

County Officials reported Orems Road at Golden Ring Road closed due to flooding.

Flood in ST. MARY'S, MARYLAND
From 16-MAR-07 16:00:00 to 16-MAR-07 18:00:00 (EST-5)
Location: MECHANICSVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A Trained Spotter reported flooding on Baptist Church Road and Hurry Road near Mechanicsville.

Winter Weather in ANNE ARUNDEL, MARYLAND
From 16-MAR-07 07:00:00 to 16-MAR-07 17:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

A light coating of freezing rain led to dozens of minor car accidents across Anne Arundel County.

Winter Weather in MONTGOMERY, MARYLAND
From 16-MAR-07 07:00:00 to 16-MAR-07 17:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained Spotters reported between 2 and 4 inches of snow across Montgomery County.

Winter Weather in NORTHERN BALTIMORE, MARYLAND
From 16-MAR-07 07:00:00 to 16-MAR-07 17:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained Spotters reported between 1 and 3 inches of snow across northern Baltimore County. Newspapers reported early school closings due to the weather.