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Snow Forecast Sunday Night Tuesday Snow Outlook Unclear
The first of two weather systems for the next 5 days will be coming in Sunday night. This is a weak system that will likely see a little enhancement of snow for areas in South Jersey and Southeastern Pennsylvania since we have seen that happen a few times in that area this winter. I’m forecasting a chance for a coating to an inch or so over a large geographic area and highlighting a best chance area to over South Jersey & Southeastern Pennsylvania where there is a chance somebody could wind up with an inch or two.
Meanwhile the cold front has finally pushed through. All the showers are long gone and skies are clearing out. Winds are picking up and while temperatures did manage the lower 50s in most places we are headed down for this evening and overnight. By morning we will be in the upper teens to middle 20s over most of the area. Saturday will be nice and sunny but cold with most highs in the low to middle 30s. Then another clear cold night Saturday night into Sunday morning with lows in the teens to low 20s. Sunday look for sunshine giving way to increasing clouds with highs reaching into the 30s. Then we get whatever we get Sunday night and it should be long gone by daybreak Monday. Monday we should see some sunshine and clouds with highs reaching the upper 30s and lower 40s.
Tuesday’s system still remains muddled over the question of a secondary low developing along the coast while the primary low intensifies and heads for the Great Lakes. The development of that low is important since it will pinch off some of the warm air for a few extra hours and that could make the difference between a coating to an inch before a change to rain or several inches or higher before a change over (best chance for that would be inland north and west of the coast.
The GFS model which has been the most aggressive in developing this coastal low has now become the least aggressive. It is aggressive to the point of silliness on the parallel GFS run since the upper air pattern doesn’t really support the notion of a deep wrapped up secondary low. Such a low would pinch off the warm air significantly.
The European has the colder look today with a stronger high over Quebec and a more defined secondary wave along the North Carolina coast which it takes to just south of Nantucket Wednesday morning. This will make the difference in snow amounts so we will wait for a little more clarity before coming out with an early call snow forecast map. We will probably do one on Saturday.
MANY THANKS TO TROPICAL TIDBITS FOR THE USE OF MAPS
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