An energetic stretch of weather is coming to the Mid-Atlantic region with the arrival of a strong cold front on Friday night that will lead to periods of rain and a possible thunderstorm or two. On Saturday, deepening low pressure in the upper atmosphere will pass overhead leading to somewhat unsettled conditions with increasing winds and a possible snow shower or two. The air turns colder on Saturday and the wind will become noticeable out of the northwest and snow showers will be possible at any time. While there will be some sunshine on Sunday, winds will remain quite noticeable and it’ll remain on the chilly side in the Mid-Atlantic region.
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High pressure remains in control for another day 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 is likely around here early Friday night and, as colder air filters in, there can be some snow and/or rain shower activity late Friday night and at any time on Saturday as a wave of energy moves overhead. Another disturbance can produce a shower or two around here on Monday following a quiet, chilly day on Sunday.
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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 early Friday night and, as colder air filters in, there can be some rain and/or 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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