Winter Storm and Winter Weather in Maryland, March 14 to 15, 1999

Name: Winter Storm and Winter Weather in Maryland, March 14 to 15, 1999
Start: 1999-03-14T05:00
End: 1999-03-15T14:00
Location: Maryland

March 14 to 15, 1999 · NWS LWX · 12 events in 12 counties and zones

S. produced snow across Western and Central Maryland on the 14th.

Where it happened

Every event with a place to put it; 8 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

Tornadoes
Tropical storms and surge
Floods
Wind
Hail
Winter weather
Heat and drought
Cold
Fire, smoke and dust
Marine and coastal
Other

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The toll

Deaths: 0
Injuries: 0
Property damage: None recorded
Crop damage: None recorded
Events: 12

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS LWX wrote it up.

An area of low pressure over the Southeast U.S. produced snow across Western and Central Maryland on the 14th. Snowfall amounts were heaviest near the Pennsylvania border. Rain mixed with snow southeast of a line from Baltimore to Washington, D.C. The low pressure system redeveloped off the coast of North Carolina and moved up the Eastern Seaboard on the morning of the 15th, resulting in another period of snowfall. Total accumulations included 10 to 12 inches in Allegany County, 6 to 15 inches in Washington County, 6 to 12 inches in Frederick County, 5 to 10 inches in Carroll County, 4 inches in Howard County, and 2 to 3 inches in Southern Baltimore County, Northern Anne Arundel County, Prince Georges, and Northern Charles County. The snow was very wet and heavy and accumulations resulted in over 30,000 power outages across North Central Maryland; 15,000 in Baltimore County, 6,300 in Harford County, and 1,600 in Anne Arundel County. Driving was also difficult, especially in Western Maryland. Over 200 travellers were stranded in Washington County on the 14th after a 36 car pileup occurred around 2:00 pm on Interstate 70 near Clear Spring. 18 people were hurt in the accident, and 5 received serious injuries. The westbound lanes of I-70 were closed for 3 1/2 hours and the eastbound lanes were closed for 6 hours. There were several accidents reported on Interstate 68 as well during the storm. The heavy snowfall also closed the airport in Hagerstown.

The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

8 winter storm, 4 winter weather. Local standard time, as filed.

Winter Storm, Allegany

When: March 14, 5:00 AM EST to March 15, 2:00 PM EST
Where: Allegany forecast zone
Reported by: NEWSPAPER

Winter Storm, Washington

When: March 14, 5:00 AM EST to March 15, 2:00 PM EST
Where: Washington forecast zone
Reported by: NEWSPAPER
Coordinates: 39.604, -77.814 (the zone’s center; the record gives no point)

Winter Storm, Frederick

When: March 14, 5:00 AM EST to March 15, 2:00 PM EST
Where: Frederick forecast zone
Reported by: NEWSPAPER
Coordinates: 39.472, -77.398 (the zone’s center; the record gives no point)

Winter Storm, Montgomery

When: March 14, 5:00 AM EST to March 15, 2:00 PM EST
Where: Montgomery forecast zone
Reported by: NEWSPAPER

Winter Storm, Carroll

When: March 14, 5:00 AM EST to March 15, 2:00 PM EST
Where: Carroll forecast zone
Reported by: NEWSPAPER
Coordinates: 39.563, -77.022 (the zone’s center; the record gives no point)

Winter Storm, Northern Baltimore

When: March 14, 5:00 AM EST to March 15, 2:00 PM EST
Where: Northern Baltimore forecast zone
Reported by: NEWSPAPER
Coordinates: 39.443, -76.616 (the zone’s center; the record gives no point)

Winter Storm, Southern Baltimore

When: March 14, 5:00 AM EST to March 15, 2:00 PM EST
Where: Southern Baltimore forecast zone
Reported by: NEWSPAPER
Coordinates: 39.367, -76.614 (the zone’s center; the record gives no point)

Winter Storm, Harford

When: March 14, 5:00 AM EST to March 15, 2:00 PM EST
Where: Harford forecast zone
Reported by: NEWSPAPER

Winter Weather, Howard

When: March 14, 8:00 AM EST to March 15, 2:00 PM EST
Where: Howard forecast zone
Reported by: NEWSPAPER

Winter Weather, Anne Arundel

When: March 14, 8:00 AM EST to March 15, 2:00 PM EST
Where: Anne Arundel forecast zone
Reported by: NEWSPAPER
Coordinates: 38.994, -76.568 (the zone’s center; the record gives no point)

Winter Weather, Prince Georges

When: March 14, 8:00 AM EST to March 15, 2:00 PM EST
Where: Prince Georges forecast zone
Reported by: NEWSPAPER
Coordinates: 38.830, -76.847 (the zone’s center; the record gives no point)

Winter Weather, Charles

When: March 14, 8:00 AM EST to March 15, 2:00 PM EST
Where: Charles forecast zone
Reported by: NEWSPAPER
Coordinates: 38.474, -77.013 (the zone’s center; the record gives no point)

What these are

Winter Storm: A storm that brought snow, sleet or freezing rain at warning levels, usually over several hours or days.
Winter Weather: Snow, sleet or freezing rain below warning levels that still caused disruption, damage or casualties.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

Every storm in Maryland in 1999 Every state in 1999 This day in weather history Warnings in Maryland, March 1999

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-30. Each event’s entry at NCEI: 5686808, 5686809, 5686810, 5686811, 5686812, 5686813, 5686814, 5686815, 5686816, 5686817, 5687143, 5687144.