High pressure remains in control for another couple of days and then a strong cold front will approach the region late Friday. This front will slow down as it heads towards the eastern seaboard at week’s end and this will allow low pressure to form along the advancing frontal boundary zone. As a result, rain showers are likely here on Friday night and, as colder air filters in, there can be some snow shower activity late Friday night and Saturday.
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The next few days will be rather quiet and chilly around here with high pressure in control. A strong cold front will cross the Midwest on Thursday and arrive in the eastern states at week’s end. This frontal system will usher in a colder air mass for the upcoming weekend and the overall weather pattern will become colder for the second half of January.
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A stratospheric warming event that began several weeks ago has set off a chain of events in the atmosphere to bring some severe cold and snow to portions of Europe and Asia in recent days. Meanwhile, much of the northern part of the US has experienced above-normal temperatures in the first ten days of January, but the overall pattern is undergoing some important changes that will likely result in much colder weather during the second half of the month. Specifically, the overall pattern aloft will evolve into one which features high-latitude blocking across Greenland/northeastern Canada and high pressure ridging across the west coasts of Canada and the US. This change will allow for the transport of very cold air masses from northern Canada into the central and eastern US as we progress through the latter half of January.
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The next few days will be rather quiet and chilly around here with high pressure generally in control. There is a low pressure system that is now headed towards the Carolinas, but it should stay well to the south of our region and move out into the western Atlantic. A cold front will cross the region at week’s end and that frontal passage will usher in a colder pattern for the last half of January.
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Low pressure today will head towards the Carolinas and produce snow in the southern Appalachians from northeastern Georgia to southwestern Virginia, but it will not have any impact on the DC-to-Philly-to-NYC corridor as it continues on a northeasterly track and heads to the western Atlantic Ocean. High pressure will resume control this weekend and then low pressure will pull out of the southern US early next week and it remains to be seen as to how far north it'll come - something to monitor in coming days.
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Changes to the overall upper-level pattern across North America during the next week or so will result in much colder air for the second half of the month of January in the Mid-Atlantic/NE US. The upper part of the atmosphere will evolve into a pattern that features high-latitude blocking across Greenland/northeastern Canada, high pressure ridging across the west coasts of Canada and the US, and even “cross-polar” flow which could transport Siberian air to this side of the North Pole. In addition, numerous waves of energy aloft will ensure the recent active weather pattern continues with numerous storm threats in coming days for much of the nation. One storm system will bring accumulating snow on Friday to the southern Appalachians from northeastern Georgia to southwestern Virginia and another system next week could threaten the Mid-Atlantic/NE US with snow and/or rain.
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High pressure will be in control of the weather today bringing us cold, breezy conditions and yes, the return of the sun (great yellow ball in the sky). Low pressure on Friday will head towards the Carolinas and produce snow in the southern Appalachians from NE Georgia to SW Virginia, but likely not have any impact on the DC-to-Philly-to-NYC corridor as it continues on a northeasterly track and heads to the western Atlantic Ocean. High pressure will resume control this weekend and then low pressure will pull out of the southern US early next week and it could bring snow here on Tuesday or a mix of snow and rain - something to monitor closely in coming days.
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While there certainly has been some moderate cold in the Mid-Atlantic/NE US in the first part of the month, the overall weather pattern that is unfolding will likely result in much colder air relative-to-normal for the second half of the month of January. The upper part of the atmosphere will evolve into a pattern that features high-latitude blocking across Greenland/northeastern Canada and high pressure ridging across the west coasts of Canada and the US. This combination will allow for the transport of increasingly cold air masses into the Mid-Atlantic/NE US as we progress through January. In addition, numerous waves of energy aloft will ensure the active pattern continues as well with many storm threats to come in coming days for much of the nation.
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A cold front passed through the area on Tuesday and has ushered in a reinforcing cold air mass for the Mid-Atlantic region. The frontal passage has also led to a drier atmosphere which will allow for the return of sunshine today as high pressure builds into the region. In fact, the high pressure system will control the weather around here for the next couple of days with chilly conditions, a noticeable breeze and plenty of sunshine. Low pressure heads to the Carolina coastline on Friday morning and likely stays to our south and east as it heads to the northeast and out-to-sea.
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A cold front will pass through the area this afternoon and bring with it the chance of a rain and/or snow shower or two. High pressure will take control of the weather around here for Wednesday and Thursday and then we’ll have to watch the movement of a storm system expected to be over the Carolinas as we close out the work week on Friday. This system could stay to our south and east and head out-to-sea, but it is still something to monitor as a turn to the north cannot yet be ruled out. Another winter storm is likely to threaten the southern and eastern US next week and this one will need to be closely monitored right through the upcoming weekend as it has great potential.
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