7:00 AM | Lingering storm to bring windy conditions and snow or rain showers to region

6-Day Forecast

Today

Considerable clouds, windy and cold with an isolated snow or rain shower, highs in the low-to-mid 40's

Tonight

Cloudy, windy and cold with an isolated snow shower or two possible; especially, across the northern suburbs, lows near 30 degrees

Thursday

Considerable clouds, still windy and cold, cannot rule out a few snow showers; especially, across northern sections of the District, near 40 degrees

Thursday Night

Cloudy, breezy, cold, near 30 degrees

Friday

Partly sunny, cold, low 40’s

Saturday

Mostly sunny, cold, mid 40’s

Sunday

Mostly sunny, chilly, near 50 degrees

Monday

Mostly sunny, chilly, near 50 degrees

Discussion

The major coastal storm that pushed slowly northward yesterday along the Mid-Atlantic coastline has stalled out over southern New England and colder air in the mid and upper atmosphere is “wrapping around” the surface low pressure system. At the same time, a little piece of upper-level energy (arrow) is rotating around the surface system from the Ohio Valley and this will act to reinvigorate the upper-level low today at 500 mb (see map) which will keep the atmosphere quite unstable. As a result, snow showers will threaten today across eastern PA and perhaps even into the northern sections of the District by later this evening and then again during the day Thursday. The surface low will finally relinquish to high pressure on Friday and dry weather is likely during the upcoming weekend.

Video

httpv://youtu.be/G_ldNYhrUyI