A chilly air mass pushed into the Mid-Atlantic region on Wednesday, and it’ll stay quite a bit below-normal for the next 24 hours with highs confined to 60 degrees or slightly below and overnight lows back down in the 30’s in most suburban locations. It turns a bit milder on Friday and the weekend is shaping up to be mild and likely on the dry side until perhaps late Sunday or Sunday night when showers could fall with an approaching frontal system.
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A cold front passed through the region late yesterday and has ushered in a chilly air mass to the Mid-Atlantic region. Temperatures during the next 48 hours will be well below-normal for the end of April and overnight lows in the 30’s will be commonplace across most suburban areas. The combination of departing low pressure to our northeast and approaching high pressure from our west will result in a persistent NW wind during the next couple of days that can gust past 30 mph at times. Some modification in temperatures will take place at week’s end and the weekend is looking rather quiet and mild for the most part with highs generally in the 60’s.
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A cold front will close in on the region today bringing with it a good chance of showers; especially, from later in the afternoon to early tonight. Skies should clear after midnight as a colder air mass pushes into the Mid-Atlantic region and a stiff NW breeze will develop following the passage of the cold front. The next couple of days will feature windy conditions, daytime temperatures well below-normal for late April despite some sunshine on each day, and overnight lows in the 30’s in most suburbs. Some modification will take place in temperatures during the late week period and the weekend should begin on a quiet and mild note.
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High pressure off New England will continue to produce a light onshore flow around here today resulting in some cloudiness. Showers will develop on Tuesday as a cold front approaches the region and much cooler air will move in for the mid-week period. Highs on Wednesday will likely be limited to the upper 50’s and it’ll be quite windy and then late night temperatures will drop back down into the 30’s.
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The warming trend that began at mid-week will continue today and afternoon temperatures are likely to peak in the low-to-mid 70’s. It does turn a tad cooler on Saturday, but then a surge in temperatures on Sunday could result in afternoon highs not far from the 85 degree mark. Looking ahead, we are not quite done yet with the cold shots from Canada and another such air mass featuring below-normal temperatures will arrive here by the middle of next week and stick around into the subsequent weekend.
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Temperatures could surge to 80 degrees this Sunday in parts of the Mid-Atlantic region, but as has been the case for much of the spring, this next warm up will not necessarily stick around for an extended period. In fact, signs point to another shot of cold air for the Mid-Atlantic region by the middle of next week and teleconnection indices suggest we may have to deal with unusually chilly air masses right into the first part of May with overnight lows in the 30’s.
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A weak frontal system will approach the region later today, but with little impact and high pressure will re-establish itself in the Mid-Atlantic region on Friday. As a result, the warming trend that began yesterday will continue for the next couple of days and the nice weather pattern looks like it’ll continue into early next week. We are not quite done with the cold shots, however, as another air mass featuring below-normal temperatures is destined to arrive here by the middle of next week.
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After a very chilly start to the week, a warming trend and a nice stretch of weather will begin today as high pressure builds into the area. Temperatures will climb into the 50’s this afternoon and then into the 60’s on Thursday ahead of the next cool front which will be rather weak and inconsequential. As a matter of fact, temperatures should climb to the 75 degree mark on Friday and it’ll stay warm this weekend as well.
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A late season nor’easter continues to produce accumulating snow across interior sections of the Mid-Atlantic and Northeast US and windy, cold weather in the DC-to-Philly-to-NYC corridor. This system will lift into New England this morning and high pressure will gradually fill its shoes in our area late today into Wednesday. Milder weather returns later in the week and we’ll likely be flirting with the 75 degree mark again for highs by Friday afternoon.
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A late season coastal storm will bring heavy rain to the DC-to-Philly-to-NYC corridor from later today through tonight, strong winds and potential flooding to coastal sections and accumulating to snow to interior, higher elevation locations of the Mid-Atlantic/Northeast US. In fact, it is not out of the question that some of the northern and western suburbs of the big cities along I-95 see ice pellets or even snow mixed in at times during this unfolding coast storm. An unusually chilly air mass is in place across the northeastern part of the nation, jet streaks will form at multiple levels of the atmosphere, and a vigorous disturbance aloft will all contribute to the formation of a significant storm that will have a variety of impacts over the northeastern quadrant of the nation. Cold air outbreaks from Canada into the central and eastern states have continued unabated in recent weeks and it looks like they will continue into late April and likely the early part of May.
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