6:00 AM | ***Slow-moving and powerful ocean storm to bring rain, damaging wind gusts and accumulating snow***

6-Day Philadelphia Forecast

Today

Cloudy, mild, periods of rain; primarily, during the mid-to-late afternoon hours, highs in the mid 50’s

Tonight

Cloudy, becoming breezy and turning colder with periods of rain, lows near 40 degrees

Friday

Cloudy, becoming extremely windy, cold, more rain early and it should change to sleet and heavy, wet snow with accumulations likely later in the day, blizzard-like conditions are even possible, near 40 degrees early for highs

Friday Night

Extremely windy and cold with snow or snow showers possible, low-to-mid 30’s for late night lows

Saturday

Mainly cloudy, very windy early in the day, cold, low-to-mid 40’s

Sunday

Mainly sunny, chilly, mid-to-upper 40’s

Monday

Mainly sunny, chilly, upper 40’s

Tuesday

Partly sunny, chilly, chance of showers, mid-to-upper 40’s

Discussion

Very strong high-latitude blocking is now forming in the upper part of the atmosphere over Greenland and northern Canada and this feature will become a key factor in the unfolding weather scenario for the Mid-Atlantic region. A major ocean storm will form by later tomorrow and it will be a slow-mover as a result of the blocking pattern to the north; consequently, it’ll impact the region for an extended period of time. This powerful storm will initially generate rainfall for us, but then as rapid intensification unfolds and colder air gets drawn in, the potential exists for damaging winds and wind-whipped accumulating snow on Friday and Friday night. Power outages are a real concern given the expected extreme wind gusts (60 mph) and potential heavy, wet snow that may fall in some areas.

Meteorologist Paul Dorian
Vencore, Inc.
vencoreweather.com