Low pressure developed along a stationary front south of the Washington DC. Surface temperatures were marginal and snowfall accumulated west of the I-95 corridor.
Every event with a place to put it; 2 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
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.
The episode as NWS LWX wrote it up.
Low pressure developed along a stationary front south of the Washington DC. Surface temperatures were marginal and snowfall accumulated west of the I-95 corridor. A cold air damming situation formed during the event and led to accumulating snow across the Shenandoah Valley and Central Foothills.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Baltimore/Washington wrote its last area forecast discussion before the first event at Mar 17, 10:36 PM EST, 3 hours 24 minutes earlier.
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</html>The national radar mosaic for the moment the first event began.
2 winter weather. Local standard time, as filed.
Snowfall totaled up to 1.5 inches near La Plata and one inch near Waldorf and St. Charles.
Snowfall totaled up to 4.0 inches near Mount Savage and 3.2 inches at Eckhart Mines.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Maryland in 2013Every state in 2013This day in weather historyWarnings in Maryland, March 2013
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: 442627, 442628.