Today we a arctic front being hung up over the area , this front is ever so slowly moving to the southeast with waves of low pressure along it, where the cold air is established major ice falling and snow, where the warm air is just plain rain
That big slug of moisture to our southwest will come through with a round of steady rain this afternoon through much of tonight and showers and drizzle until that gets here. Periods of moderate to heavy rain are expected , as the front drifts south the cold air will also work in turning the rain to snow for interior locations and possibly to portions of the coast , the Poconos can expect accumulations of 1-3 inches , NW NJ a general coating to 1 inch and the rest of the area is expected to end as snow flakes with little or no accumulation, generally anywhere from 0.50-1.00 of additional rain is expected, the trough in the west was a tad east that would push the SE ridge east and we would have a lot of happy winter weather lovers by tomorrow morning but the pattern is non supportive of any significant wintry weather
Once the front works through tomorrow morning we will find clearing skies and a sharply colder air mass in place with most places stuck in the 30s tomorrow and lows in the upper 10s to mid 20s there may be a few snow showers around in the early morning but most of the day will be dry
Sunday things get a bit more interesting, especially if your away from the coast (seems to be a theme developing for this winter) , another low pressure will develop near the Gulf coast, now generally speaking due to this unfavorable pattern/persistent SE ridge signal the track will be well west of the area but with some cold air establishing itself over the area this storm will start off wintry before eventually everyone turns over to rain
Along the coast ( SE of I95 just a quick burst of light snow is expected which will rapidly turn to sleet and rain , along I95 including NYC-Philly perhaps a bit more of a prolonged period of snow with light accumulations of Coating -1 inch possible, a bit of sleet then moderate to heavy rain, just NW of I95 light accumulations of snow and sleet generally in the 1-2 inch range maybe some slight icing (less than 1/10th of an inch ) in coldest locations before moderate to heavy rainfall, for the Lehigh Valley area to Lancaster/Reading it looks like a 1-3 inch snowfall with 0.10- 0.25 of ice and finally the interior, NW NJ and NE PA through Central PA , moderate snow accumulations of 3-5 inches are expected, with up to 0.25-0.50 of freezing rain, more in NE PA less in NW NJ. Rainfall of 0.50-1.50 inches can be expected for everyone else after the initial burst of snow/ice.
The precipitation will slowly start from south to north starting mid afternoon Sunday and exit Monday early afternoon , the iciest and snowiest part of the storm will be from 7 pm Sunday to 7 am Monday.
After this passes some of the cold that’s been hounding most of the country will finally come east with well below average temperatures expected Tuesday through Friday of next week with highs in the mid 20s to low 30s and lows in the 10s to lower 20s