A potent wave of energy in the upper part of the atmosphere is pushing into the Northeast US and it is accompanied by a powerful jet streak at the 250 millibar level. As a result, there is strong upward motion in the Mid-Atlantic region which is leading to pretty widespread snow shower activity that is dropping south and east and towards the DC-to-Philly-to-NYC corridor. With temperatures still near the freezing mark, any snow that develops can cause small accumulations and slick spots on some roadways. The best chance for the small accumulations will be near and north of the PA/MD border, but watch out all the way south to the northern suburbs of DC and the Baltimore metro region. Later today, skies will clear and it’ll stay on the chilly side and high pressure takes control for the next couple of days with a warming trend.
Looking ahead, the weekend will feature temperatures well up in the 50’s in the DC-to-Philly-to-NYC corridor, but the milder will be accompanied by some shower activity ahead of the next approaching strong cold front. Following the passage of the weekend cold front, a colder air mass will push in on Monday and we’ll have to watch for the possibility of a coastal storm during the early part of next week.
Meteorologist Paul Dorian