A major winter storm is headed to the Mid-Atlantic region, and it will bring significant snowfall to the DC-to-Philly-to-NYC corridor and there will be some icing as well. The stage will be set for the winter storm with the arrival of Arctic air into the Mid-Atlantic region in the overnight hours and it’ll remain below freezing throughout the weekend weather event. The icing would be predominately in the form of sleet; however, freezing rain can get involved in some areas which always raises a red flag for the potential of power outages. Bitter cold air will follow the storm with low temperatures likely flirting with the zero degree mark next week.
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Buckle up…the next ten days or so will be quite wild. The latest in a series of Arctic air outbreaks is plunging today into the north-central states today and it’ll swallow up much of the eastern two-thirds of the nation by the upcoming weekend. This Arctic outbreak means business and features some extremely cold air with temperatures well below zero in many spots, and it’ll set the stage for widespread impacts this weekend by a major storm system. A crippling ice event is on the table for many in the Texas-to-Virginia corridor, and a significant snowfall in other areas including the DC-to-Philly-to-NYC corridor where some icing may get involved. Following the storm, brutally cold conditions are likely to continue across much of the nation including in the Mid-Atlantic region where morning lows during the first half of next week may reach seldom seen territory.
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The next in a series of Arctic air outbreaks will plunge into the north-central states on Thursday and it’ll swallow up much of the eastern two-thirds of the nation by the upcoming weekend. This next Arctic outbreak will be the real deal featuring some extremely cold air, and it’ll set the stage for widespread impacts this weekend by a major storm system. A crippling ice event is on the table for many in the Texas-to-Virginia corridor, and a significant snowfall in other areas including the Mid-Atlantic region. Following the storm, brutal cold is likely across much of the nation including in the Mid-Atlantic region where morning lows may be pretty amazing indeed during the first half of next week.
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The next couple of weeks will feature some of the worst weather winter has to offer with bitter cold conditions and a major storm system that can bring a crippling ice event to some areas this weekend and significant snowfall to others. The coldest core of the current Arctic air outbreak has reached the Mid-Atlantic region, and temperatures are likely to bottom out later tonight in the single digits across many suburban locations along the I-95 corridor. There will be a temporary modification in temperatures on Thursday in the Mid-Atlantic region and then another Arctic air mass will push in for the upcoming weekend. This late week/weekend blast will feature some incredible cold with temperatures as low as 30 degrees below zero in portions of the Upper Midwest/Northern Plains, and more bitter cold is a likelihood in the Mid-Atlantic region during the upcoming weekend. By the end of the week, moisture will be gathering across the south-central states. As this moisture pushes to the north and east, it will encounter this very cold air mass, and the result will be icing across many southern states – potentially a crippling event - and significant accumulating snow farther to the north and this potentially includes the Mid-Atlantic region.
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The next couple of weeks will feature multiple Arctic outbreaks...some incredible cold...and the likelihood of a major weekend winter storm that will impact a large part of the nation in a variety of ways. The core of the coldest air associated with the current Arctic outbreak reaches the Mid-Atlantic region for the period tonight, tomorrow, and tomorrow night and some suburban locations can see single digits lows by early Wednesday. There will be a temporary modification in temperatures on Thursday in the Mid-Atlantic region and then another Arctic air mass will push in for the upcoming weekend. This late week/weekend blast will feature some incredible cold with temperatures as low as 30 degrees below zero in portions of the Upper Midwest/Northern Plains, and bitter cold is a possibility in the Mid-Atlantic region during the upcoming weekend.
At the same time the next Arctic invasion swallows up the northern states, moisture will be gathering across the south-central states. As this moisture pushes to the north and east, it will encounter this very cold air mass, and the result could be icing across many southern states – potentially a crippling event - and significant accumulating snow to the north. There will likely be a very strong Arctic high pressure system over the Northeast US this weekend anchoring the bitter cold air mass in place and the extent to which the moisture field can penetrate north and east into the Mid-Atlantic/Northeast US will have to be better determined in coming days. Suffice to say, the potential is there for a big-time impact this weekend in the Mid-Atlantic region given the Arctic cold to the north and copious amounts of moisture to our south.
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An active weather pattern is leading to a “doubleheader” of snow in the Mid-Atlantic region with snow from one system on Saturday and snow is likely from a second system on Sunday. The accumulations on Saturday with system number one will be be primarily from northern Maryland northward with lesser chances in the DC metro region. On Sunday, a coastal storm can bring accumulating snow all along the I-95 corridor and to coastal sections of the Mid-Atlantic. This overall pattern remains very cold with bitter cold conditions expected here on Monday night, Tuesday, and Tuesday night and the possibility still exists for some extreme cold during the last week of the month…and additional snow threats on the horizon.
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An Arctic air mass has reached the eastern US today on the heels of a strong cold frontal system and this winter chill will extend all the way down to the state of Florida by later tonight. Another Arctic air mass will push into the north-central US early this weekend and it’ll spread to the east coast later in the weekend. The frontal boundary zone at the leading edge of the weekend Arctic blast will act as a catalyst for waves of low pressure to form and one system can bring some snow to parts of the eastern US from later Friday night to Saturday and a second on Sunday. The second low pressure system can bring snow to unusual places in the southeastern part of the nation on Sunday, and its snow field may extend far enough to the north and west to have an impact in the DC-to-Philly-to-NYC corridor. Following the passage of the Sunday system, yet another Arctic air mass will drop south and east into the northern US on Sunday night, and it’ll put the Mid-Atlantic region and Northeast US into the deep freeze by time Monday night and Tuesday roll around. Looking ahead, numerous signs point to additional Arctic air outbreaks as we work through the last week of January and this time period could feature some extreme cold.
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The next couple of weeks are likely to feature multiple Arctic air outbreaks across the eastern half of the nation and even the state of Florida will be impacted (watch out iguanas). This kind of evolving pattern that features a major disruption of the polar vortex can certainly include some extreme cold during what is statistically speaking the coldest time of the year later in the month. This cold weather pattern will be quite active as well with multiple snow threats along the way for the Great Lakes, Midwest, Mid-Atlantic and Northeast US...and perhaps some snow this weekend in unusual places like the Southeast US.
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After a couple of moderately cold days to start the week in the Mid-Atlantic region, it’ll turn milder on Wednesday ahead of the next cold frontal system. That mid-week cold front will usher in a colder air mass later this week, and it appears the overall weather pattern is setting up for multiple cold air outbreaks during the second half of January, and this will include the possibility of extreme cold.
In addition, the evolving weather pattern will likely be quite active as well featuring strong high pressure ridging near Alaska, high latitude blocking across northern Canada, and a large-scale and intense trough of low pressure centered over the eastern states. Multiple short-wave streams of energy will rotate through the large-scale trough, and each will have to be monitored to see if they can produce any appreciable snowfall in the Mid-Atlantic region.
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Much warmer-than-normal air that originated over the Pacific Ocean has enveloped much of the nation this week and some of this will reach the northeastern states on Friday with high temperatures likely well up in the 50’s in many locations. It’ll turn out cooler on Saturday with a soaking rainfall, but still warmer-than-normal for this time of year. The milder weather will come to an end later this weekend with the passage of a strong cold front that’ll usher in colder and windy weather conditions for later Sunday into Monday.
By later next week, some important changes will begin to take place in the upper atmosphere across North America. First, an intense upper-level ridge of high pressure is likely to form near Alaska and the west coast of Canada replacing a trough of low pressure that has dominated that region in recent weeks. At the same time, an upper-level trough of low pressure will deepen over the eastern half of the US in response to a more active subtropical jet stream that has been largely missing in action in recent weeks. This combination will increase the chance for additional cold air intrusions into the US from Canada beginning later next week and can increase the chance for storms to develop across the southern and eastern states.
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