A strong cold front passed through the region on Monday and a chilly air mass has moved into the Mid-Atlantic region in its wake. High temperatures this afternoon will be confined to the 50’s in most I-95 locations and many suburbs will see overnight lows near the freezing mark. It’ll turn milder later this week, but then a strong cold front arrives on Friday, April 1st, and this frontal passage will usher in a colder-than-normal stretch of weather for the region beginning this weekend.
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A strong cold front will sweep through our region today and it will not go through unnoticed. Rain this morning can fall briefly heavily at times and - in the wake of the frontal passage later today - winds will intensify dramatically with possible wind gusts to 50 mph from mid-afternoon through the evening. High pressure will build into the region by tomorrow as a chilly air mass settles in on the region. It’ll turn milder later this week, but then a strong cold front arrives this weekend and this frontal passage will usher in a colder-than-normal stretch of weather for the eastern US beginning on Sunday and lasting for much of the first ten days of April.
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A cold front will cross the region today and get our Friday off to a damp start. The good news is that high pressure will then build in for the weekend which should out to be quite decent for this time of year. It’ll turn out to be pleasant and dry on Saturday with plenty of sunshine and the high pressure system should hang on long enough for a dry Easter Sunday as sun fades behind increasing cloudiness. Showers are likely to return to the region later Sunday night and continue on Monday from an area of moisture moving our way from the southeastern states.
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Warm weather will continue today as broad southwesterly flow continues on the backside of an offshore high pressure system. Periods of rain are likely late tonight into early Friday as a strong cool front arrives and there can be a thunderstorm or two mixed in. Some of the rain towards morning and early Friday can be briefly heavy. The Easter weekend is looking decent with “pleasantly cool, dry and sunny” conditions on Saturday and then “sun followed by increasing clouds” on Sunday. Showers are likely to return to the Mid-Atlantic region later Sunday night and continue on Monday as moisture from the southeastern states pushes in our direction.
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High pressure has shifted to a position over the western Atlantic Ocean during the past 24 hours and the result will be a widespread southwesterly flow of milder air across the eastern US. Temperatures this afternoon will approach the 70 degree mark and it’ll stay quite warm on Thursday as well as a frontal system approaches. That cold front is likely to generate periods of rain around here tomorrow night and then it’ll turn slightly cooler on Friday following the frontal passage. Easter weekend generally looks pretty nice with cool, dry and sunny conditions on Saturday and the decent weather should hold on for Sunday before showers arrive Sunday night or Monday.
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High pressure will build into the region today and then push off the east coast later tomorrow. This re-positioning of the high pressure system will bring about a warm up for the region as low-level winds shift to a southwesterly direction. A cold front will pass through the region on Thursday night generating periods of rain around here, and it’ll turn slightly cooler behind it at the end of the work week. Easter weekend should begin cool, dry and mainly sunny on Saturday, but showers could arrive later in the day on Sunday or during Sunday night.
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Strong low pressure sits off the northern New England coastline this morning and we’ll experience windy and cold conditions here in the Mid-Atlantic region as we begin the new work week. High pressure will build into the region by tomorrow and it’ll turn much milder with temperatures approaching the 70 degree mark and it'll stay quite mild on Thursday as well.
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Spring has officially begun and apparently no one notified Mother Nature. The first full day of spring will turn out much colder than Christmas Day in the Mid-Atlantic region and Northeast US. In addition, accumulating snow is quite likely from later today through tonight in much of the I-95 corridor as low pressure intensifies off the Mid-Atlantic coastline. Cold, dry Arctic air poured into the Mid-Atlantic region during the past 24 hours and this has allowed for some breaks of sunshine today and the possibility for some accumulating snow by later tonight.
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“Front-runner” moisture (indicated by arrow on radar image) has resulted in some rain in the DC metro region early this afternoon which has recently begun mixing with a bit of snow and sleet and it should change to all snow by late today in many locations north and west of the District before winding down later tonight. This batch of moisture has so far stayed primarily south of the PA/MD border, but there can be some mixed precipitation across southeastern PA by late today and early tonight. Meanwhile, there is an important upper level low spinning over Iowa this afternoon (indicated by arrow on radar image) and it will drop southeastward over the next 12 hours or so reaching the Southeast US by early tomorrow. After that, low pressure will move out of the Southeast US and towards the Mid-Atlantic coastal waters later Sunday and begin to intensify as it pushes northeastward. Precipitation is likely to expand northwestward from the surface low pressure system later tomorrow as it slowly intensifies and this could generate nuisance accumulating snow in the DC, Philly and NYC metro regions. In fact, there is still a chance that some snow could fall as late as late tomorrow night from the Philly metro region northeast to NYC and across New Jersey.
All areas from DC-to-Philly-to-NYC can receive accumulations by late tomorrow night on the order of a coating to 3 inches which would be primarily on grassy surfaces and after dark - perhaps even more accumulation that that across New Jersey. Should the coastal low pressure system strengthen more rapidly on Sunday and Sunday night than currently expected - not unreasonable given the potent upper-level low - then it still can turn out to be more than just a nuisance snowfall in the I-95 corridor from DC-to-Philly-to-NYC. We’ll continue to monitor it closely over the next 24 hours or so - stay tuned.
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One cold frontal system arrived late yesterday with scattered showers and its passage has sent temperatures down slightly for today, but an even more important and stronger cold front will slide through the region later today. This second frontal passage will usher in noticeably colder (Arctic) air for the weekend as cold high pressure builds to our north. By later tomorrow, moisture will already be streaming into the Mid-Atlantic region as a “front-runner” system heads eastward from the central US. Precipitation is likely to break out across the DC metro region by tomorrow afternoon and then likely reach the Philly metro region sometime tomorrow night. By early Sunday, low pressure will move towards the Mid-Atlantic coastline from the southeastern states. Precipitation intensity and potential snow accumulation amounts on Sunday and Sunday night will depend on the eventual storm track and speed at which this storm strengthens near the Mid-Atlantic coastline. Current snowfall estimates are Dusting-3 inches in the DC metro region, 2-5 inches in the Philly metro region, and 3-6 inches in and around NYC - all still subject to change. The snow should be of the wet variety and should accumulate primarily on non-paved surfaces in the time period from later tomorrow into Sunday night.
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