Winter Storm, Allegany
- When
- January 20, 12:00 AM EST to 6:00 PM EST
- Where
- Allegany forecast zone
- Reported by
- OFFICIAL NWS OBS.
Winter Storm and Winter Weather in Maryland, January 20, 2000
Low pressure moved from west to east across the Mid-Atlantic region on the 20th, dropping 3 to 8 inches of snow between midnight and mid-afternoon. Gusty winds of 35 to 45 MPH developed during the afternoon causing the snow to drift across roadways and reduce visibilities in open areas.
Where it happened
Every event with a place to put it; 10 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
The toll
- Deaths
- 0
- Injuries
- 1
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 14
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.
Low pressure moved from west to east across the Mid-Atlantic region on the 20th, dropping 3 to 8 inches of snow between midnight and mid-afternoon. Gusty winds of 35 to 45 MPH developed during the afternoon causing the snow to drift across roadways and reduce visibilities in open areas. The first snowstorm of the season led to flight delays at Baltimore Washington International Airport (BWI) and resulted in several minor traffic accidents. One person was treated for hypothermia at North Anne Arundel Hospital near Annapolis. Snowfall totals included 4.7 inches in Westminster, 7.0 inches in Bel Air, 5.0 inches in Baltimore, 7.5 inches in Annapolis, 5.7 inches at BWI, 4.8 inches at Andrews Air Force Base, 3.0 inches at Patuxent River Naval Air Station, 4.0 inches in La Plata, 6.2 inches in Damascus, 8.0 inches in Emmitsburg, 4.1 inches in Hagerstown, 6.5 inches in Cumberland, and 7.7 inches in Frostburg.
The radar
The national radar mosaic for the moment the first event began.
Event by event
13 winter storm, 1 winter weather. Local standard time, as filed.
Winter Storm, Washington
- When
- January 20, 12:00 AM EST to 6:00 PM EST
- Where
- Washington forecast zone
- Reported by
- OFFICIAL NWS OBS.
- Coordinates
- 39.604, -77.814 (the zone’s center; the record gives no point)
Winter Storm, Frederick
- When
- January 20, 12:00 AM EST to 6:00 PM EST
- Where
- Frederick forecast zone
- Reported by
- OFFICIAL NWS OBS.
- Coordinates
- 39.472, -77.398 (the zone’s center; the record gives no point)
Winter Storm, Carroll
- When
- January 20, 12:00 AM EST to 6:00 PM EST
- Where
- Carroll forecast zone
- Reported by
- OFFICIAL NWS OBS.
- Coordinates
- 39.563, -77.022 (the zone’s center; the record gives no point)
Winter Storm, Northern Baltimore
- When
- January 20, 12:00 AM EST to 6:00 PM EST
- Where
- Northern Baltimore forecast zone
- Reported by
- OFFICIAL NWS OBS.
- Coordinates
- 39.443, -76.616 (the zone’s center; the record gives no point)
Winter Storm, Southern Baltimore
- When
- January 20, 12:00 AM EST to 6:00 PM EST
- Where
- Southern Baltimore forecast zone
- Reported by
- OFFICIAL NWS OBS.
- Coordinates
- 39.367, -76.614 (the zone’s center; the record gives no point)
Winter Storm, Harford
- When
- January 20, 12:00 AM EST to 6:00 PM EST
- Where
- Harford forecast zone
- Reported by
- OFFICIAL NWS OBS.
Winter Storm, Howard
- When
- January 20, 12:00 AM EST to 6:00 PM EST
- Where
- Howard forecast zone
- Reported by
- OFFICIAL NWS OBS.
Winter Storm, Montgomery
- When
- January 20, 12:00 AM EST to 6:00 PM EST
- Where
- Montgomery forecast zone
- Reported by
- OFFICIAL NWS OBS.
Winter Storm, Anne Arundel
- When
- January 20, 12:00 AM EST to 6:00 PM EST
- Where
- Anne Arundel forecast zone
- Injuries
- 1 direct, 0 indirect
- Reported by
- OFFICIAL NWS OBS.
- Coordinates
- 38.994, -76.568 (the zone’s center; the record gives no point)
Winter Storm, Prince Georges
- When
- January 20, 12:00 AM EST to 6:00 PM EST
- Where
- Prince Georges forecast zone
- Reported by
- OFFICIAL NWS OBS.
- Coordinates
- 38.830, -76.847 (the zone’s center; the record gives no point)
Winter Storm, St. Mary'S
- When
- January 20, 12:00 AM EST to 6:00 PM EST
- Where
- St. Mary'S forecast zone
- Reported by
- OFFICIAL NWS OBS.
- Coordinates
- 38.216, -76.529 (the zone’s center; the record gives no point)
Winter Storm, Calvert
- When
- January 20, 12:00 AM EST to 6:00 PM EST
- Where
- Calvert forecast zone
- Reported by
- OFFICIAL NWS OBS.
- Coordinates
- 38.535, -76.531 (the zone’s center; the record gives no point)
Winter Weather, Charles
- When
- January 20, 12:00 AM EST to 6:00 PM EST
- Where
- Charles forecast zone
- Reported by
- OFFICIAL NWS OBS.
- 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
- Heavy Snow in Delaware, January 20, 2000
- Cold in South Carolina, January 20, 2000
- Heavy Snow in New York, January 20, 2000
- Heavy Snow in Pennsylvania, January 20, 2000
- Winter Storm and Winter Weather in Virginia, January 20, 2000
- Winter Storm in North Carolina, January 20, 2000
- Heavy Snow in New Jersey, January 20 to 21, 2000
- Heavy Snow in New York, January 20 to 21, 2000
- Heavy Snow in North Carolina, January 20, 2000
- Heavy Snow in Pennsylvania, January 20, 2000
- Heavy Snow in Ohio, January 20, 2000
- Winter Storm and Winter Weather in West Virginia, January 20, 2000
More
Every storm in Maryland in 2000Every state in 2000This day in weather historyWarnings in Maryland, January 2000
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 2026-09-24. Each event’s entry at NCEI: 5128679, 5128680, 5128681, 5129049, 5129050, 5129051, 5129052, 5129053, 5129054, 5129055, 5129056, 5129057, 5129058, 5129059.