Low pressure rapidly intensified offshore. A period of snow developed due to the lows rapid intensification.
Every event with a place to put it; 15 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 rapidly intensified offshore. A period of snow developed due to the lows rapid intensification. Although snow amounts were light, it impacted the morning rush thanks to cold temperatures that allowed the light snow to stick.
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 Jan 3, 9:12 PM EST, 1 hour 48 minutes earlier.
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</html>The national radar mosaic for the moment the first event began.
13 winter weather, 2 winter storm. Local standard time, as filed.
Snowfall totaled up to 2.5 inches near Riva and 2.3 inches near Crownsville. Snowfall amounts of 1 to 3 inches were reported across the county.
Snowfall totaled up to 1.2 inches in Norrisville.
Snowfall was estimated to be around a coating to a couple inches based on observations nearby.
Snowfall totaled up to 1.0 inch near Taneytown and 0.9 inches near Mount Airy.
Snowfall was estimated to be around a coating to an inch based on observations nearby.
Snowfall totaled up to 1.2 inches in Elkridge and 1.0 inch in Columbia.
Snowfall totaled up to 1.1 inches near Damascus.
Snowfall totaled up to 0.9 inches near Montgomery Village, 0.5 inches near Norbeck and 0.5 inches near Takoma Park.
Snowfall totaled up to 2.4 inches near Baden and 2.0 inches near Kettering.
Snowfall totaled up to 3.8 inches near Hughesville and 3.0 inches near St. Charles. Snowfall averaged around 1 to 3 inches across the rest of the county.
Snowfall totaled up to 1.0 inch in Towson.
Snowfall totaled up to 0.6 inches near Long Green.
Snowfall totaled up to 1.6 inches near Emmitsburg and 0.5 in Thurmont.
Snowfall totaled up to 6.3 inches near Callaway and 6.0 inches near Park Hall. Snowfall averaged around 3 to 6 inches across the rest of the county.
Snowfall totaled up to 5.0 inches near Prince Frederick and 4.5 near Huntingtown.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Maryland in 2018Every state in 2018This day in weather historyWarnings in Maryland, January 2018
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 2026-10-01. Each event’s entry at NCEI: 734500, 734501, 734504, 734507, 734510, 734511, 734512, 734513, 734515, 734517, 734530, 734531, 734532, 734533, 734534.