7:00 AM | ***Some accumulating snow early tomorrow as another Arctic air mass arrives***
Paul Dorian
6-Day forecast for the Washington, D.C. metro region
Today
Partly sunny, quite breezy, becoming milder, highs in the mid-to-upper 40’s; S-SW winds at 10-15 mph; gusts to 25 mph
Tonight
Mainly cloudy, cold, rain is likely to develop by midnight and it can mix with or change to snow by daybreak in some of the northern and western suburbs, lows in the lower 30’s late
Thursday
A period of snow in the morning; otherwise, mainly cloudy skies, breezy, cold, temperatures holding steady or falling slightly during the day
Thursday Night
Partly cloudy, breezy, very cold, near 15 degrees for late night lows
Friday
Sunshine followed by increasing clouds, very cold, mid-to-upper 20’s; chance of snow at night
Saturday
Mainly cloudy, cold, chance of snow, upper 20’s
Sunday
Partly sunny, cold, mid-to-upper 30’s
Monday
Mainly sunny, cold, lower 30’s
Discussion
Accumulating snow is likely early tomorrow upon the arrival of the next Arctic air mass as low pressure will form along an incoming frontal boundary zone. Rain will break out later this evening ahead of the Arctic front, but then mix with or change to snow towards daybreak in the northern and western suburbs as colder air filters into the region. The threat of snow will be greatest for about a 5 or 6 hour period from its likely beginning in the 6-8 AM time period. I expect accumulations of 1-3 inches in the DC metro region with isolated higher amounts possible, and while not a significant amount, the timing of the snow will not be great as it will coincide with at least part of the AM rush hour on Thursday. Bitter cold air will flow in behind the system on Thursday night and Friday and then another low pressure system will have to be watched for the early part of the weekend. Currently, that system is more likely to generate accumulating snow to the south and east of the DC-to-Philly-to-NYC corridor with a possible focus on the zone from southeastern Virginia to the Delmarva Peninsula to coastal southern New Jersey…still a close call though.
Meteorologist Paul Dorian
Arcfield Weather