7:00 AM | *****Major coastal storm to have significant impact today*****

6-Day DC Forecast

Today

Mixed precipitation will change to all snow this morning and then snow will continue heavy at times through the rest of the day, windy, cold, highs in the lower 30’s

Tonight

Snow winds down in the evening, possibly heavy at times early, windy, cold, lows in the upper 20’s

Thursday

Becoming partly sunny, breezy, cold, lower 40’s for afternoon highs

Thursday Night

Partly cloudy, cold, mid 20’s for overnight lows

Friday

Mainly sunny, cold, lower 40’s

Saturday

Mainly sunny, still quite chilly, lower 40’s

Sunday

Partly sunny, cold, chance of snow, lower 40’s

Monday

Partly sunny, a bit milder, mid 40’s

Discussion

A major coastal storm will produce significant snow accumulations today in the I-95 corridor all the way from DC-to-NYC with the immediate DC metro region likely in the 4-8 inch range and locally higher amounts are possible in the far northern and western suburbs of the District (e.g., Frederick, MD). In addition to the snow, winds will intensify as low pressure off the Mid-Atlantic coastline strengthens and the combination of strong winds gusts and heavy snow raises the prospects for power outages. Winds can gust to 40 mph at inland locations during the brunt of the storm and to 50 mph at coastal sections of the Delmarva. Later today, mesoscale snow bands may form which can produce a couple of inches of snow per hour and there is the chance for some “thunder snow” as well. As with many March snowstorms, elevation is likely to play a critical role with the difference of a couple degrees from lower spots potentially making a noticeable difference in total snowfall accumulations. The snow will wind down this evening, but the winds will stay strong right through the night.

Meteorologist Paul Dorian
Vencore, Inc.
vencoreweather.com