Low pressure over the southeastern US early this morning will intensify as it pushes northeastward to a position off the Mid-Atlantic coastline by early this evening and then to near the New England coast by later tonight. Snow or rain changing to snow will break out today across the DC-to-Philly-to-NYC corridor and several inches is possible by the time the system winds down later this evening. Bitter cold air will follow the snow for much of the week ahead with single digit overnight lows on the table and some spots may even touch the zero-degree mark. A mid-week winter storm will have a southern US focus likely producing accumulating snow and/or ice from Texas-to-northern Florida-to-the Carolina coastline…likely staying to the south and east of the Mid-Atlantic region. A third storm system may ride up the east coast by the end of the week with some snow possible in the Mid-Atlantic region in the late Thursday/early Friday time period.
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The next several days will feature the worst that winter has to offer across the nation with widespread brutal cold and multiple snow and ice threats. An Arctic invasion with a Siberian connection will get underway by Saturday as bitter cold air from Canada plunges southward through the central states. By Sunday, the Arctic air mass will spread eastward towards the Atlantic seaboard and by the time we get to Monday, Inauguration Day, most of the country will be in a deep freeze including the DC metro where outdoor activities are planned for the swearing-in ceremonies. In fact, the first couple of days of next week could be among the coldest seen across the nation in a long time as there will be bitter cold conditions extending virtually from coast-to-coast.
This cold weather pattern will come with as many as three threats of snow and ice during the next week to ten days. On Sunday, low pressure will form along the incoming Arctic frontal boundary zone and likely produce several inches of snow across the Mid-Atlantic region and Northeast US - and this includes in the big cities along the I-95 corridor from DC-to-Boston. Another storm is destined to form over the Gulf region by mid-week and its focus could be on the southern states with significant snow and ice a possibility from Texas to the Carolinas…the snow shield can potentially work its way into the Mid-Atlantic region. Yet another system can again develop way down in the southern states by the end of next week or during the subsequent weekend.
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The Arctic front at the leading edge of a widespread brutally cold air mass will slide into the eastern states on Sunday and its progression will slow down across the southeastern states. Energy will rotate through an upper-level trough to a position over the frontal boundary and low pressure will form in this area of convergence. That low pressure system will then push northeastward into an increasingly colder air mass, and it can produce several inches of snow in the DC-to-Philly-to-NYC corridor from tomorrow into tomorrow night.
Total snow accumulations in the DC metro region likely in the 3-6 inch range with isolated higher amounts, with a starting time around mid-morning. The higher amounts in this range will be on the northwestern side of the metro region and the lower amounts on the southeastern side. Bitter cold air will follow the accumulating snow for the first half of next week and overnight temperatures will drop way down to the low-to-mid single digits.
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The next several days will feature the worst that winter has to offer across the nation with widespread brutal cold and multiple snow and ice threats. An Arctic invasion with a Siberian connection will get underway by Saturday as bitter cold air from Canada plunges southward through the central states. By Sunday, the Arctic air mass will spread eastward towards the Atlantic seaboard and by the time we get to Monday, Inauguration Day, most of the country will be in a deep freeze including the DC metro where outdoor activities are planned for the swearing-in ceremonies. In fact, the first couple of days of next week could be among the coldest seen across the nation in a long, long time as there will be bitter cold conditions extending virtually from coast-to-coast.
This cold weather pattern will come with as many as three threats of snow and ice during the next week to ten days. On Sunday, low pressure will form along the incoming Arctic frontal boundary zone and likely produce several inches of snow across the Mid-Atlantic region and Northeast US - and this includes in the big cities along the I-95 corridor. Another storm is destined to form over the Gulf region by mid-week and its focus could be on the southern states with significant snow and ice a possibility down there. Yet another system can again develop way down in the southern states by the end of the next week or during the subsequent weekend.
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An outbreak of Arctic air will get underway by early tomorrow over the central US and the bitter cold air mass will plunge southward all the way into the heart of Texas by late Saturday. On Sunday, the Arctic front at the leading edge of the Arctic air mass will slide into the eastern states and its progression will likely slow down across the southeastern states. Energy will rotate through an upper-level trough on Sunday, and this will open the door for an Arctic wave of low pressure to form along the front’s temperature gradient zone which is typically a favorable area for convergence in the atmosphere. That low pressure system should then push northeastward into an increasingly colder air mass, and it is likely to produce snow in the DC-to-Philly-to-NYC corridor by later Sunday into Sunday night…accumulations of several inches are most certainly on the table with preliminary estimates of 3-6 inches in our area.
By Monday, January 20th, the bitter cold air will be firmly established across much of the nation, and this includes in the DC metro region where outdoor activities are planned for the Inauguration Day ceremonies. Temperatures are likely to be not far from 20 degrees at noontime on Monday in the DC metro area and there will be a biting wind to make it feel even colder than the actual air temperatures. In addition, there is likely to be a snow cover in DC on Monday following what I expect to be accumulating snowfall there on Sunday. Temperatures on Monday night should easily drop into single digits along the DC-to-Philly-to-NYC corridor and to below-zero levels across a huge part of the northern US. In fact, the first couple of days next week could turn out to be some of the coldest in a long, long across the nation with the brutally cold conditions extending virtually from coast-to-coast.
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The next several days will feature the worst that winter has to offer with widespread brutal cold and multiple snow and ice threats. An Arctic invasion with a Siberian connection will get underway by Saturday as bitter cold air from Canada plunges southward through the central states. By Sunday, the Arctic air mass will spread eastward towards the Atlantic seaboard and by the time we get to Monday, Inauguration Day, most of the country will be in a deep freeze including the DC metro where outdoor activities are planned for the swearing-in ceremonies. In fact, the first couple of days of next week could be among the coldest seen across the nation in a long, long time as there will be bitter cold conditions extending virtually from coast-to-coast.
This Arctic invasion will come with multiple snow and ice threats including one later Sunday into Sunday night in the Mid-Atlantic/Northeast US with several inches on the table, and another one at mid-week which could have a focus on the southern US. And, in the very short-term, snow is already falling today across the Great Lakes region with accumulations expected there on the order of a few inches, and occasional snow is likely to make its way into the DC-to-Philly-NYC corridor for the afternoon and early evening hours with accumulations possible of a coating to an inch or two.
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A “clipper” system will drop southeastward today across the Great Lakes region and it likely produces occasional snow here from mid-day/early afternoon into the early evening hours. Small accumulations of a coating to an inch or two are possible…watch for slick spots later today as temperatures will generally remain below-freezing and the roadways are very cold. Temperatures will moderate on Friday to go along with dry conditions and then there can be some rain shower activity on Saturday - perhaps even a mix with ice or snow at times - this does not look like a heavy precipitation event.
On Sunday, a strong Arctic cold front will slide into the eastern states and it will be at the leading edge of a widespread Arctic air mass. A wave of low pressure is likely to form right along this frontal boundary zone somewhere over the southeastern states and it can then push to the northeast later Sunday into an increasingly colder air mass. As such, there is the chance for snow in the Mid-Atlantic region from later Sunday into Sunday night...perhaps beginning as rain and then changing to snow…accumulations are most definitely on the table.
By the time we get to Monday, Inauguration Day, most of the country will be in a deep freeze including the DC metro area where outdoor activities are planned for the swearing-in ceremonies. Single digit (actual) temperatures are likely on Monday night all along the DC-to-Philly-to-NYC corridor and they may do no better than the teens on Tuesday for afternoon highs.
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An Arctic invasion with a Siberian connection will get underway by the early part of the weekend as bitter cold air from Canada plunges southward through the central states. By Sunday, the Arctic air mass will spread eastward towards the Atlantic seaboard and by the time we get to Monday, Inauguration Day, most of the country will be in a deep freeze including the DC metro where outdoor activities are planned for the swearing-in ceremonies. Temperatures are going to fall to well below-normal levels across much of the nation for the bulk of next week which is quite impressive indeed considering this is right around the time of year with the lowest “normal” temperatures.
The Arctic front at the leading edge of the cold air outbreak will reach the eastern states on Sunday and a wave of low pressure is likely to form right along its boundary zone. This Arctic wave could produce some accumulating snow in the Mid-Atlantic region from later Sunday into Sunday night. Another storm system could develop way down in the Gulf region by the middle of next week potentially bringing snow and ice to parts of the southern and eastern US. Looking ahead, there is even the chance for a third system to form across the southern states by the end of next week.
One final note, even before we get to the interesting weather of this weekend and next week, there can be some snow in the near-term across the Great Lakes, Mid-Atlantic, and Northeast US.
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It stays well below-normal during the next couple of days and some snow is likely later tomorrow as a disturbance crosses the Great Lakes….small accumulations are possible on the order of a coating to an inch or so. Temperatures will moderate for Friday and Saturday and there can be some rain shower activity during the first half of the weekend with an outside chance that ice and/or snow mixes in at times early Saturday.
A strong cold front is going to pass through early Sunday and set the stage for bitter cold Arctic air to move into the region for the bulk of next week. A wave of low pressure can form along the Arctic frontal boundary zone potentially producing some snow in the Mid-Atlantic region from later Sunday into Sunday night. The bitter cold will continue into mid-week and there can be another storm threat with its origins likely over the Gulf of Mexico.
Stay tuned…next week is looking quite interesting.
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Widespread bitter cold air looks like it will overspread the nation next week and there can be multiple storm threats as well. Temperatures are likely to fall to well below-normal levels across much of the nation which is quite impressive considering the 3rd week of January is - from a climatological point-of-view - the coldest week of the year in many areas. An Arctic front is going to head into the eastern states later in the weekend and it will be at the leading edge of this incoming Arctic air mass...some of which may have its origins on the Siberian side of the North Pole. A wave of low pressure may form along the Arctic frontal boundary zone early next week potentially producing some snow in the Mid-Atlantic region for the period from late Sunday into Monday (Inauguration Day). Another storm threat could come at mid-week with its origins way down south and perhaps there will even be a third one during the late week time period.
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