Low pressure will track towards the coastal waters of Virginia/North Carolina later today and tonight and snow should overspread our area during the mid-to-late afternoon hours. The snow will continue through most of the night with accumulations on the order of 2-5 inches (higher amounts generally to the south and lower amounts to the north). A quick follow-up storm system will bring more wintry precipitation to the region later tomorrow and Wednesday night including snow, sleet and freezing rain before a changeover to plain rain early Thursday.
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The next low pressure to impact the Mid-Atlantic region will take more of a southern track compared to recent systems and head to a position off the Mid-Atlantic coastline by early Wednesday. As a result, cold air will become better established farther to the south and we are looking at primarily a snow event in the Mid-Atlantic including across the DC metro region. Given the southern track, the highest snowfall amounts are likely to cut across the southern Mid-Atlantic in places like DC, Virginia, Delmarva and southern New Jersey where several inches are possible. A follow-up low pressure system will quickly follow from late Wednesday into Thursday, and it will have a lot of cold air on its front end likely resulting in snow and/or sleet by Wednesday evening in much of the Mid-Atlantic region. However, this second system will take a track to the northwest of I-95 and that path will allow for milder air to push northward resulting in a changeover by Thursday of snow/sleet to freezing rain and rain.
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High pressure will remain in control of the weather here today, but it shifts off the coast by tomorrow and that opens the door for moisture to head this way from our southwest. Low pressure will gather strength on Tuesday and head towards the coastal waters of the Mid-Atlantic region. With this more southern track compared to recent storms, cold air will be better established in the Mid-Atlantic region and pushed farther to the south leading to a snow event in the Philly metro region likely from mid-to-late afternoon into Wednesday. Accumulations are likely in the 2-5 inch range with the lower amounts in that range to the north and west and the higher amounts to the south and east. Another storm threatens to bring snow, ice and rain to the area from Wednesday evening into Thursday as this on-going active pattern continues.
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After a dry, chilly day on Friday, the next storm in a series of storms will bring snow, sleet and freezing rain to the region on Saturday and Saturday night and total snow/ice accumulations of 1-3 inches are likely. Any clouds early Sunday will give way to partly sunny skies so there should be no travel issues in the leadup to the Super Bowl (start time at 6:30pm). Another storm system in this on-going active weather pattern can bring more accumulating snow to the region from Tuesday into Wednesday of next week.
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The hits just keep on coming...
An active weather pattern will bring two more winter storms to the Mid-Atlantic region between the weekend and the early-to-middle part of next week and there will be multiple other threats to follow. Low pressure will ride up along the Appalachian Mountains late Saturday as a secondary system forms off the Mid-Atlantic coastline. The result will be snow, sleet and freezing rain in the Mid-Atlantic region from Saturday into Saturday night with significant icing in some areas . The bulk of Super Bowl Sunday will be dry with no travel issues expected during the afternoon hours leading up time to the game (starts at 6:30pm). Another storm is likely to take more of a southern track early next week compared to recent systems heading directly to the Mid-Atlantic coastline. This next storm system will bring accumulating snow to the Mid-Atlantic from later Tuesday into Wednesday and perhaps significant amounts in places like the Washington, D.C. metro region.
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Temperatures will be reluctant to rise above freezing early today so any remaining mixed precipitation can cause slippery spots on untreated surfaces, but 40-degree highs are likely in the afternoon. A cold, dry air mass will push in for Friday and there should be plenty of sunshine as high pressure takes control. A similar scenario to the current one is likely to unfold for the weekend with a good chance of mixed precipitation from later Saturday through Saturday night. Partial sunshine should return on Sunday after early day clouds so there shouldn’t be any travel issues in the leadup to the Super Bowl (start time of 6:30pm). The active weather pattern will likely result in another storm system during the first half of next week which could bring us accumulating snow on Tuesday.
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An active weather pattern will bring three winter storm systems to the Mid-Atlantic region during the next week or so. The first system will bring a mix of precipitation types to the DC-to-Philly-to-NYC corridor from tonight into tomorrow morning and all areas are likely to feature slippery road conditions for the Thursday AM commute. A thin layer of air with slightly above-freezing temperatures will push into the upper part of the atmosphere later tonight from the DC metro region to southeastern PA and this will lead to many hours of sleet and/or freezing rain depending on location. It looks like mainly a snow event in the NYC metro area during the overnight and early morning hours though sleet and rain can mix in at times. All areas along the Mid-Atlantic’s I-95 corridor are likely to experience slippery road conditions for the Thursday AM commute. A similar scenario with mixed precipitation is likely this weekend in the Mid-Atlantic region from late Saturday into early Sunday and there is the potential for accumulating snow during the early-to-middle part of next week as this very active weather pattern continues.
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A fresh, cold and dry air mass pushed into the region last night following the passage of a cold frontal system. This air mass is being anchored today by strong high pressure over New England and it helps to set the stage for plenty of frozen precipitation around here from later this evening into early Tuesday. As moisture first arrives, it’ll likely be cold enough for snow, but then a thin layer of above-freezing air will push in aloft and result in a changeover of the precipitation to sleet which may last for an extended period of time during the overnight hours. By late tonight, the sleet may mix with or change to rain and with ground temperatures at or below freezing, any rain that falls will freeze on untreated surfaces. In fact, temperatures will be reluctant to climb above freezing for most of the morning on Thursday; especially, across the N/W suburbs. Bottom line...Thursday AM commute can be quite a mess with slippery road conditions possible throughout the region. A repeat performance is likely this Saturday and Saturday night with a ”snow-to-sleet-to-freezing rain-to-plain rain” scenario on the table. Looking ahead, accumulating snow is likely to threaten the Mid-Atlantic region during the early-to-middle part of next week.
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An active weather pattern will likely bring three winter storm systems to the Mid-Atlantic region during the next week or so. The first system will bring a mix of precipitation to the DC-to-Philly-to-NYC corridor from late tomorrow into Thursday morning and all areas are likely to experience slippery road conditions for the Thursday AM commute. A thin layer aloft of slightly above-freezing air will push into the region on Wednesday night, and this will play a big role in precipitation types ranging from snow-to-sleet-to-freezing rain to just plain rain. Always a difficult forecast when dealing with these thin layers, but my initial feeling on this mid-week threat in the I-95 corridor is as follows: DC metro region will get hit hard with freezing rain leading to a significant ice-buildup, the Philly metro region may have an extended period of sleet, and the NYC metro region may actually see snow for much of the event that certainly can mix with sleet at times. A similar weather event could unfold for the upcoming weekend in the Mid-Atlantic region with a “snow-to-sleet-to-freezing rain-to-plain rain” scenario on the table. Looking past the weekend system, there very well may be an accumulating snow threat for much of the Mid-Atlantic region by the middle of next week and it can be significant.
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In just the next week or so, it appears there will be as many as three opportunities for snow, ice and rain in the Mid-Atlantic region. The first such opportunity will come from late tomorrow into early Thursday and this could turn out to be an icy mess for much of the Mid-Atlantic region leading to issues for the Thursday AM commute in the DC-to-Philly-to-NYC corridor. The setup will include a cold frontal passage today that will be followed by an influx of fresh cold and dry air in the overnight hours while at the same time moisture begins to gather over the Tennessee Valley. This dense, cold air mass will be quite reluctant to give up its ground on Wednesday night as the moisture arrives and surface temperatures will be slow to climb to above freezing levels until later Thursday morning. At the onset of the precipitation later tomorrow, there can be a period of snow in some areas and plain rain with above-freezing temperatures is likely on the back end later Thursday.
Looking ahead, there can be a repeat performance in the Mid-Atlantic region during the upcoming weekend with “snow-to-sleet-to-freezing rain-to-plain rain” on the table. Looking even farther ahead, there may be an accumulating snow threat by the middle of next week in this on-going very active weather pattern.
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