7:00 AM | *Significant storm threat continues for late Sunday/Monday along the Mid-Atlantic coast*

6-Day Forecast

Today

Partly sunny, breezy, cold, a few snow showers likely, highs in the low 40’s

Tonight

Partly cloudy, cold, lows in the mid 20’s

Saturday

Mostly sunny, still breezy and cold, mid 40’s

Saturday Night

Mostly clear, cold, upper 20’s

Sunday

Increasing clouds, cold, chance for rain or snow late in the afternoon and then snow likely at night, low-to-mid 40’s

Monday

Cloudy, cold, snow likely, possibly mixed with rain at times, temperatures primarily holding in the 30's

Tuesday

Partly sunny, cold, low-to-mid 40’s

Wednesday

Partly sunny, cold, mid 40’s

Discussion

Temperatures will stay below normal in the Mid-Atlantic as we head into the weekend and attention will shift to a storm that will cross the country dumping heavy snow in its path. By Sunday, a “primary” low pressure system will head towards the Ohio Valley after dumping heavy snow on the southern Rockies and central Plains, but as a result of the atmospheric roadblock that this system will encounter, the low will grind to a halt and transfer its energy to a developing “secondary” Mid-Atlantic coastal low. That coastal low will spread precipitation into the I-95 corridor from DC-to-Philly-to-NYC later Sunday into Monday and, while some of it will likely be in the form of rain, significant accumulating snow is also a real threat given this type of pattern; especially, in the northern and western suburbs and in higher elevation locations. The blocking pattern across Canada may prevent the coastal low from riding up the New England coastline so, as of now, significant precipitation is more of a threat for DC, Philly and NYC as compared to Boston and Portland (but still some time for that to change).

Video

httpv://youtu.be/y4HHy9XVfqg