The stretch of weather that began just before Christmas Day has been very cold relative-to-normal for much of the eastern two-thirds of the country and it may reach a nadir this weekend. Temperatures during the next couple of mornings in the DC-to-Philly-to-NYC corridor should rather easily drop to single digits and some spots will likely reach zero or even sub-zero conditions. Each morning this week has featured numerous record-low temperatures in the Northeast US, Midwest and Mid-Atlantic regions and that pattern should continue tomorrow morning and perhaps become even more widespread early Sunday morning. It’ll stay very cold on Sunday, but less painful than Saturday as temperatures will climb a bit and winds will drop off in intensity and then there will be more modification on Monday with many areas attempting to climb above freezing for the first time in many days. More significant warming in the I-95 corridor is likely late next week for a few days and then an even greater and more widespread “January thaw” is possible later this month.
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On the heels of yesterday’s intense storm, winds will continue to be quite strong and a frigid Arctic air mass has overspread the Mid-Atlantic region. Temperatures both today and Saturday will have a tough time climbing through the teens for highs and overnight lows for the next couple of early mornings will reach single digits. The temperatures will moderate on Monday following another very cold day to end the weekend, but the “warm up” may be accompanied by a light wintry mix of ice, rain and/or snow.
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A high impact weather event continues for much of the eastern US with bands of accumulating snow soon to be followed by extreme cold and dangerous sub-zero wind chills. This storm now ranks as one of the most intense east coast winter storms ever in terms of how fast and how much it has intensified while moving over the relatively warm waters of the western Atlantic Ocean (i.e., Gulf Stream). In fact, the central pressure dropped 54 millibars in a 24-hour period reaching major hurricane-like strength (category 3) by 7AM of 954 millibars (28.17) and it is unleashing hurricane-force winds along coastal sections of New Jersey to New England. Heavy snow bands rotating around the storm will continue for the few hours in the Mid-Atlantic region, but by later today, the powerful winds will become the main factor and then the extreme cold.
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A high impact weather event is underway for much of the eastern US with bands of accumulating snow that will be followed by extreme cold and dangerous sub-zero wind chills. A powerful storm over the western Atlantic Ocean is intensifying rapidly on its way to the east of Maine by early tonight. This storm will reach hurricane-like strength by tonight with its central pressure bottoming out at category 3 (major) hurricane levels. Extremely cold air will pour into the eastern US on the heels of this ocean storm and winds will strengthen significantly for tonight, tomorrow and Saturday. The combination of wind gusts past 40 mph and the extremely cold temperatures will generate dangerous sub-zero wind chill values for an extended period of time from tonight to Saturday night. After that, some moderation in temperatures should arrive early next week, but that temporary “warm up” may be accompanied by some wintry precipitation.
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A high impact weather event is unfolding for much of the eastern US with accumulating snow to be followed by extreme cold and dangerous sub-zero wind chills. A powerful storm over the western Atlantic Ocean will deepen explosively during the next 24-36 hours as it moves generally northward from off the Florida coastline today to just east of Maine by tomorrow night. This storm will develop hurricane-like strength by tomorrow night when its central pressure could bottom out near 28.14 inches (953 millibars) – this is on the same level as category 3 (major) hurricanes. Extremely cold air will pour into the eastern US on the heels of this ocean storm and given its intense pressure gradient, winds will strengthen significantly on Thursday night and Friday. The combination of wind gusts past 40 mph and the extremely cold temperatures will generate dangerous sub-zero wind chill values for an extended period of time from Thursday night to Saturday night. After that, some moderation in temperatures should arrive early next week, but that temporary “warmup” may be accompanied by some wintry precipitation.
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The bitter cold weather pattern of the past couple of weeks for the eastern two-thirds of the nation will not ease up at all this week and an added feature will be a powerful storm that develops over the western Atlantic Ocean during the next 24-36 hours. This storm is likely to generate ice and accumulating snow over the next couple of days all the way from Florida to New England and accumulating snow can fall in this region on the order of a dusting to a couple of inches with higher amounts to the east of Route 95. Any shift westward in the storm track could result in significantly more snowfall around here – still within the realm of possibility.
Perhaps even more important than any snow that falls from this upcoming storm will be the extreme cold that follows throughout the eastern US in the Thursday night-to-Saturday time period. Wind chills will reach dangerous sub-zero levels as winds gust to 50 mph or so in this late week time period and power outages may become a real concern; especially, across coastal sections. A relaxation in temperatures is likely to arrive in the Mid-Atlantic region by early next week, but there may be a wintry mix of rain, sleet and/or snow to accompany this temporary “warm up”.
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The bitter cold weather pattern of the past couple of weeks for the eastern two-thirds of the nation will not ease up at all this week and an added feature will be a powerful storm that develops over the western Atlantic Ocean. This storm is likely to generate ice and accumulating snow from Florida to New England over the next couple of days and accumulating snow can fall all the way back to the immediate I-95 corridor region between DC and Philly. Temperatures today will stay below freezing across about 80% of the nation and record lows have been set this morning in dozens of locations repeating a similar performance of yesterday morning. Perhaps even more important than any snow that falls from this upcoming storm will be the extreme cold that follows in the eastern US during the Thursday night to Saturday time period. Wind chills will reach dangerous sub-zero levels as winds gust to 50 mph or so in this late week time period and power outages are a concern. A relaxation in temperatures is likely to arrive in the Mid-Atlantic region by early next week, but there may be a wintry mix of rain, sleet and/or snow to accompany that “warm up”.
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A storm will form off of the east coast of Florida on Wednesday and it’ll become a monster by the time it reaches the area east of Maine on Thursday night. With this expected track, the DC-to-Philly-to-NYC corridor will be on the western edge of the storm’s precipitation field and accumulating snow is a threat around here in the Wednesday night/Thursday morning time frame and is especially likely in areas to the east of Route 95. Following this storm, more extreme cold will move into the I-95 corridor for Thursday night, Friday and Saturday and wind chills will drop to dangerous sub-zero levels as winds gust to 40 mph or so. Looking ahead, some moderation in temperatures is likely to finally arrive in the Mid-Atlantic region during the early part of next week and this may result in a period of rain, sleet and/or snow.
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Arctic cold will be relentless and punishing for much of the nation for several days to come and many areas will be experience some of the coldest weather in decades to begin a new year. In fact, the three week stretch from around December 20th to January 10th could be one of the coldest stretches we’ve had across much of the nation in a long, long time. A clipper system will drop southeastward and into the DC-to-Philly-to-NYC corridor on Saturday – likely with accumulating snow on the order of a dusting to an inch or two – and it will usher in the coldest Arctic air mass so far in this cold wave for the Sunday, Monday, and Tuesday time period. Indeed, average temperatures in the eastern two-thirds of the nation may be the coldest ever to start a new year in about 70 years of record keeping.
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Our relentless Arctic cold weather will continue through next week and the lowest temperatures are likely still to come. A fast-moving “clipper” system will drop southeastward into our area by tomorrow and it can produce some accumulating snowfall in the Mid-Atlantic region despite its lack of available moisture. With cold air firmly in place, the "snow-to-liquid" ratios will be quite high (~12:1) and this may result in a dusting to an inch or two despite the limited "precipitable water" content. This “clipper” system will then usher in a fresh frigid Arctic air mass for Sunday, Monday and Tuesday and this will be an extremely cold period for much of the eastern US. In fact, temperatures around here could start the new year on Monday morning in the single digits in many spots. Looking ahead, there may be another threat for snow during the middle of next week, but odds currently favor that potential system forming a bit too far off the coastline for any important impact around here. Stay tuned.
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