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BY STEVEN DiMARTINO
NEWJERSEYNEWSROOM.COM
As a coastal low lifts northeast this morning, areas of very heavy rainfall have been moving through the Philadelphia and New York City metropolitan areas. This portion of the storm is associated with the Sub Tropical jet stream, which is driving warm air into the region leading to temperatures rising into the mid 40's to mid 50's for highs this afternoon. However, the warm conditions won't last long.
A rapidly intensifying low pressure system over the Ohio Valley will phase or merge with an advancing Arctic cold front. This cold front will advance towards the Philadelphia and New York City metropolitan areas tonight into early tomorrow morning. Ahead of the cold front, temperatures will remain warm ranging from the mid to upper 40's this evening with winds from the southwest at 10 to 20 mph. As the Arctic cold front moves through tomorrow morning, temperatures will crash and then hold in the mid 30's to lower 40's. A squall line of rain and snow showers can be expected with this arctic cold front. Winds will veer to the northwest at 10 to 20 mph with higher gusts over 40 mph leading to wind chills in the 20's and 30's by tomorrow afternoon.
Arctic high pressure will take hold tomorrow evening on through Monday with tranquil weather conditions expected. Winds will decrease to 5 to 10 mph from the west and northwest through this weekend. Due to the cold nature of the air mass in place, I can't rule out a stray flurry or two through this weekend, but no organized areas of precipitation is expected. Temperatures will range from the single digits to upper 10's for lows and mid 20's to mid 30's for highs.
A cold front will approach on Tuesday with scattered rain and snow showers and moderating temperatures followed by another reinforcing shoot of Arctic air. Temperatures on Tuesday afternoon will rebound into the upper 30's to mid 40's before falling back into the lower 20's to lower 30's by Wednesday morning. Afternoon highs on Wednesday will range from the mid 30's to lower 40's.
