The overall weather pattern remains quite active as we end the work week and it will remain so right through next week. The pattern is also evolving into one that increases the chances of icing (sleet, freezing rain) in the Mid-Atlantic region. In fact, significant icing is possible this weekend as the next system brings some moisture into the area with low-level cold remaining air in place. In addition, there will likely be two significant storm systems to deal with next week and there is the potential for some icing during both events in at least parts of the Mid-Atlantic region.
Elsewhere, an Arctic plunge later this weekend will result in historic cold for the southern Plains with many low temperature records to be broken across Texas and Oklahoma and they’ll have to contend with snow and ice as well. In fact, there are some spots in the southern Plains that will approach or even break their all-time low temperature records during this blast of Arctic air. The longevity of this on-going cold wave across the northern and central US has been quite amazing.
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A very active weather pattern continues for much of the nation as we close in on the end of the week and it will continue right through next week. One fast-moving system produced some accumulating snow last night in the Mid-Atlantic region and another one will do the same tonight although a bit farther to the south. Another system will likely bring some icing to the Mid-Atlantic region from later Saturday into early Sunday as temperatures stay below freezing in most areas. In fact, the overall weather pattern is evolving into one that favors ice events across a good part of the nation. The weekend system does not look all that strong, but it doesn’t take much in the way of ice to cause some problems. Looking ahead, there is growing potential for a major winter storm early next week that can have a significant impact from the Rockies to the southern Plains to the Ohio Valley and then finally to the Mid-Atlantic/Northeast US.
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The next ten days will bring the worst that winter has to offer too much of the nation which will include accumulating snow, significant icing and persistent cold that will be extreme in some areas. The energetic pattern of recent days will continue with storm-after-storm impacting the nation from coast-to-coast in this next ten day time period. Perhaps the best example of the most extreme winter weather that is on the way will take place deep in the heart of Texas where temperatures could drop to near zero by early next week and snow and ice can accumulate all the way down into the southeastern part of the state.
In the Mid-Atlantic region, one system will bring accumulating snow to areas near and to the north of the PA/MD border from tonight into early Thursday and it’ll produce a mixed bag of snow, sleet and rain in the DC metro region. A second and relatively weak system will have little or no impact on areas to the north of the PA/MD border on Thursday night and early Friday, but it can produce a small amount of snow in the DC metro region. A stronger system set to arrive this weekend will have more moisture to deal with than these first two and it could result in more significant ice and/or snow in the Mid-Atlantic region. And yes, there may be two other storms to deal with in the Mid-Atlantic region next week with significant snow and/or ice on the table for either or both of these systems.
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The second half of the week will feature two waves of precipitation for the Mid-Atlantic region with one wave coming from Wednesday night into early Thursday and the second from later Thursday into mid-day Friday. It appears that the heaviest snows associated with both of these systems will be suppressed to areas south of the PA/MD border across Virginia, Maryland, southern Delmarva, and southern New Jersey. The DC metro region will likely be right in or very close to the zone with the heaviest snow and there should be less impact to the northeast in places like Philadelphia and New York City. Another winter storm system may impact the Mid-Atlantic region this weekend and its passage early next week could be the catalyst for an intrusion of bitter cold air into the DC-to-Philly-to-NYC corridor. And yes, there may be another winter storm threat for the Mid-Atlantic region by the middle of next week. Unfortunately, the potential threats coming this weekend and by the middle part of next week present the possibility of significant icing issues in parts of the Mid-Atlantic region.
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It just won’t let up…a very active weather pattern will continue for much of the eastern half of the nation during the next ten days and there will be multiple chances of accumulating snow and/or ice in the Mid-Atlantic region. Arctic air is in place as we begin the new work week across the northeastern quadrant of the nation and intense cold will grip the much of the northern and central US in coming days….in other words, there will be plenty of cold air around to tap into for the Mid-Atlantic region by approaching systems.
The first chance for snow and/or ice in the Mid-Atlantic region will come late tonight and tomorrow from a relatively weak system that moves into the northeastern states. Despite its weakness, this initial system can cause some problems with accumulating snow north of the PA/MD border and potential ice south of there. A stronger system is likely to then impact the region in two waves during the second half of the week with one concentrating on the period from later Wednesday into early Thursday and then a second from later Thursday into Friday. Accumulations of snow are certainly on the table in the DC-to-Philly-to-NYC corridor during this long-duration second half of the week event - and this won’t be the end of the wintry precipitation threats. Yet another system could generate snow and/or ice in the Mid-Atlantic region later in the upcoming weekend and potentially more activity could come next week.
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A moderately cold air mass has moved into the Mid-Atlantic region following the passage of a cold frontal system and now attention has turned to the Gulf of Mexico and the southeastern states where moisture is gathering. A storm will develop near the South Carolina coastline by early tonight and move to a position off the New Jersey coastline by mid-day Sunday. This system is going to generate a new round of accumulating snow in the DC-to-Philly-to-NYC corridor from late tonight into the mid-day or early afternoon hours on Sunday with several inches on the table for many spots. Looking ahead, the active weather pattern of recent days will continue beyond tomorrow’s storm with additional chances of snow and/or ice coming to the Mid-Atlantic from around mid-week into next weekend.
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Moderate cold air will follow the passage of a cold front for the upcoming weekend and attention will turn to the Gulf of Mexico and the southeastern states where a lot of moisture will be gathering. A storm will develop near the South Carolina coastline by early Saturday night and move to a position off the New Jersey coastline by mid-day Sunday. This system is likely to bring another round of accumulating snow to the DC-to-Philly-to-NYC corridor from later Saturday night into Sunday morning with several inches on the table. Looking ahead, very cold air will pour into the interior Northwest, Northern Plains, Upper Midwest and Great Lakes next week and the overall active weather pattern will bring additional snow threats to the Mid-Atlantic region.
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Low pressure is impacting the Upper Midwest today with accumulating snow from Iowa to Wisconsin and it’ll push into the southeastern part of Canada by later tomorrow. A trailing strong cold front will slide into the eastern US on Friday and there can be a wintry mess of snow, sleet and/or freezing rain ahead of it in some suburban locations of the I-95 corridor from late tonight into early Friday. By later Friday, it’ll turn mild enough for just plain rain showers in the DC-to-Philly-to-NYC corridor and temperatures will likely climb into the 40’s.
Moderate cold air will follow the cold frontal passage for the upcoming weekend and attention will turn to the Gulf of Mexico and Southeast US where a lot of moisture will be gathering. A storm will develop in the southeastern states by early Saturday night and - depending on the interaction of two separate waves of energy aloft - it could end up pushing far enough to the north and east to have an impact the Mid-Atlantic region with accumulating snow - perhaps mixed with rain at times - from late Saturday night into mid-day Sunday. Looking ahead, very cold air will pour into the interior Northwest, Northern Plains, Upper Midwest and Great Lakes early next week and it looks like it will then spread to the Mid-Atlantic region at mid-week - potentially setting us up for an extended period of colder-than-normal conditions…and likely additional snow threats.
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Low pressure continues to deepen off the Mid-Atlantic coastline and it will continue to have a major impact on the northern Mid-Atlantic through tonight in the area from eastern PA-to-New Jersey-to-southeastern New York. Mixed precipitation this morning has changed to snow in most places as colder air wraps into the system from the north/northeast. There will continue to be small-scale bands of very heavy snowfall from later today through tonight and many spots will end up with 1-2 feet of accumulation from this long duration storm system by the time it winds down later Tuesday.
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A major and complex storm system is coming to the Mid-Atlantic region and it will be a long duration event with impact into Tuesday. Indeed, this storm could turn out to be one of the all-time greats for some sections of eastern PA, upstate New Jersey, and southeastern New York. The storm will come in two phases with the first part already underway and associated with a process known as “overrunning”. The second phase of this major winter storm event will feature a very slow moving and powerful storm just off the Mid-Atlantic coastline.
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