The next in a series of Arctic air masses will begin to plunge into the north-central states later today and this one will be brutal...potentially the worst of the bunch since the cold pattern developed around Thanksgiving Day. Temperatures this weekend can drop to 20 degrees below zero in parts of the region from Montana to Wisconsin and wind chills can reach dangerously low levels. Meanwhile, yet another “clipper” system will begin to organize later today out across the north-central states and then push east-southeast on Saturday crossing over central Plains, Midwest and Ohio Valley. This system will reach the Mid-Atlantic region on Saturday night and will be supported aloft by a vigorous jet streak that will enhance upward motion in the area. The result will be accumulating snow from Saturday night into Sunday morning in the Mid-Atlantic region and this includes the DC-to-Philly-to-NYC corridor. Bitter cold and strong winds will follow for the rest of Sunday, Sunday night, and Monday.
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The next in a series of “clipper” systems will weaken today as it pushes into the Mid-Atlantic region and this will limit its impact around here with little to no snow expected in the local area. By tonight, another Arctic air mass will invade the north-central US from Canada, and this one will be brutal...perhaps the worst of all since this cold pattern got cranking around Thanksgiving Day.
Meanwhile, yet another “clipper” system will head in an east-to-southeast direction on Saturday crossing over the central Plains, Midwest and Ohio Valley, and this is the one with the greatest potential of producing accumulating snow in the Mid-Atlantic region...including the I-95 corridor. When this system arrives on Saturday night, it looks like it will have quite a bit of upper-level support; specifically, in terms of a powerful jet streak. This jet streak is likely to generate strong upward motion across the Mid-Atlantic on Saturday night and Sunday morning assuring there is no weakening as compared with today’s “clipper” system. The result is likely to be accumulating snow here from Saturday night into early Sunday which may begin briefly as a mix of rain and snow. Preliminary snowfall estimates are 1-3 inches for this area with isolated higher amounts possible.
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In the wake of yesterday’s “clipper” system, another Arctic air mass is pouring into the northeastern states on stiff NW winds and temperatures today will struggle to climb from early day levels. In addition, snow showers are likely in parts of the area and heavier snow squalls can develop causing travel headaches across some interior, higher elevation locations. Another “clipper” system will reach the Mid-Atlantic region on Friday, and it’ll gradually weaken during the day as it loses some of its upper-level support and this will limit its impact on the DC-to-Philly-to-NYC corridor.
By later tomorrow, the next Arctic air mass will plunge into the north-central US from Canada and this one will be brutal...potentially the worst of the bunch since the cold pattern developed around Thanksgiving Day. Temperatures this weekend can drop to 20 degrees below zero in parts of the region from Montana to Wisconsin and wind chills can reach dangerously low levels. Meanwhile, yet another “clipper” system will push east-southeast crossing over central Plains, Midwest and Ohio Valley on Saturday and then into the Mid-Atlantic region by Saturday night. This system will feature some strong support in the upper atmosphere with a vigorous jet streak and has the potential of producing accumulating snow in the Mid-Atlantic region from late Saturday into early Sunday. Arctic air that invades the north-central states on Friday and Saturday will then spread to the northeastern states on Sunday following the passage of this next “clipper” system.
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One “clipper” system passed well by to our north and west on Wednesday and the passage of its trailing cold front has ushered in another very cold air mass for this time of year. Temperatures will struggle to climb through the 30’s today and there will be a stiff NW wind to make it feel even colder than the actual air temperatures. On Friday, another “clipper” system will weaken as it reaches the Mid-Atlantic region and likely only be able to produce a touch of snow in some areas.
Over the weekend, yet another “clipper” system will push east-southeast towards the Mid-Atlantic region from the Ohio Valley, and this one will feature some strong support in the upper atmosphere with a vigorous jet streak. As a result, this system will have greater potential to generate accumulating snow in the Mid-Atlantic region from late Saturday into early Sunday. Another seriously cold Arctic air mass will follow for the Sunday, Monday, Tuesday time period with far below normal temperatures expected throughout the northeastern states.
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The next several days will feature multiple “clipper” low pressure systems across the northern US which are typically rather quick movers from northwest-to-southeast. One such system will track well to the north and west of the DC-to-Philly-to-NYC corridor later today bringing windy and slightly milder conditions to the I-95 corridor along with the threat of a few rain showers. A second “clipper” system will push towards the Mid-Atlantic region on Friday from the Ohio Valley. While this system may begin to weaken upon its approach, it can still produce some snow on Friday in parts of the Mid-Atlantic region including the DC metro and parts of Virginia (a hot spot so far this winter season for snowfall).
Over the weekend, yet another “clipper” system will push east-southeast towards the Mid-Atlantic region from the Ohio Valley, and this one will feature some strong support in the upper atmosphere with a vigorous jet streak. As a result, this is the most impressive to me of all of these “clipper” systems with the highest potential of producing accumulating snow in the Mid-Atlantic region (late Saturday into early Sunday). One final note, the Arctic blast that reaches the north-central US by early this weekend and then the Mid-Atlantic/Northeast US by early next week will feature some of the coldest air yet in this relentless cold weather pattern that began around Thanksgiving Day. Temperatures can drop to twenty degrees below zero by Sunday morning across a wide portion of the Upper Midwest from Minnesota-to-Iowa-to-Wisconsin.
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After a very cold day on Tuesday, temperatures will moderate today as a “clipper” low pressure system pushes well to our north resulting in a low-level south-to-southwesterly flow that’ll bring in slightly milder air and there will also be the chance for rain showers. Another “clipper” system can bring some snow here later Friday into Friday night and then a third one can produce some snow from late Saturday into early Sunday. The weekend “clipper” system will usher in a reinforcing Arctic air mass for the first part of next week...some warmer weather is possible during the second half of next week
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The day dawns with the lowest temperatures of the season so far in the Mid-Atlantic region and, in many spots, it is near or at a record low for the date. After a very cold Tuesday, temperatures will moderate at mid-week as a “clipper” low pressure system pushes well to the north of here resulting in a stiff southwesterly flow of air on Wednesday that’ll bring in slightly milder air. Some precipitation is likely on Wednesday with this initial “clipper” system and - despite the warm up - it may still be cold enough in some areas for a mix of rain and snow at the onset. Another “clipper” system can bring some snow to the area later Friday and then a third one can produce some snow in the Saturday-to-Sunday time frame. That last “clipper” system will usher in another bitter cold Arctic air mass for the late weekend and early part of next week…warmer weather is possible later next week.
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The cold pattern that has brought relentless cold in recent days from Alaska to the Mid-Atlantic region will continue for at least another week or so. The new work week begins with some frigid air in the eastern states and overnight lows in the DC-to-Philly-to-NYC corridor will drop to their lowest levels of the season so far. “Clipper” low pressure systems will swing cold fronts through the northeastern states during the next few days limiting any chance for a sustained warmup. One “clipper” can bring rain, ice and/or snow to the Mid-Atlantic/Northeast US at mid-week and a second system can bring a touch of snow in the late week. Over the weekend, low pressure may ride along the Arctic boundary zone, and this system could bring some accumulating snow to the Mid-Atlantic region to go along with the well below-normal temperatures that should last into the early part of next week.
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Low pressure will slide by to our south today and produce accumulating snow across much of central and southern Virginia. In fact, some of the snow can make it as far north as the DC metro region; especially, into those areas on the south and west sides of DC so watch out for possible slick spots and small accumulations later this morning. The week will start off with far below-normal temperatures following the passage of a strong cold front on Sunday night and temperatures later tonight will drop to their lowest levels so far this season. Some moderation in temperatures will come by the middle of the week as a low pressure system passes by to our north, and then a “clipper” system could produce some snow and/or rain around here later in the week.
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Low pressure is pushing to the northeast today and its moisture field is moving into some very cold and dry Arctic air across the Mid-Atlantic region. The result is that snow has broken out across the southern Mid-Atlantic region and accumulations of as much as 2 or 3 inches are possible today in parts of the DC metro region. The steadiest snow should wind down by mid-day and then snow showers are possible in the afternoon and there can be a bit of freezing drizzle. In areas just to the south of us, as much as 4 or 5 inches can accumulate today across central and southern Virginia. Following today’s system, the bulk of the weekend should turn out to be mainly dry and moderately cold with some sunshine likely on both days. By Sunday night, another strong cold front and its associated “clipper” low pressure system can bring some rain and/or snow shower activity to the metro region.
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