December begins on a chilly note and it looks like much of the first half of the month will feature colder-than-normal temperatures in the eastern half of the nation. In addition, the overall pattern looks to remain quite active with a couple of winter weather threats during the next several days. High pressure will build into New England today and then retreat to the northeast on Tuesday at the same time low pressure pushes toward the Mid-Atlantic coastline. Precipitation is likely to reach the area around or just before dawn and it could be cold enough for snow in most places. As the high retreats to the northeast, enough milder ocean air will push in to produce a changeover of the snow to rain and there can be icing for awhile during the transition. Accumulations are possible before the changeover on the order of a coating to as much as 2 or 3 inches in some of the far northern and western suburbs…lowest amounts in the Philly metro area and to its southeast. High pressure takes control of the weather for the mid-week and then a cold front arrives by Thursday night perhaps associated with a couple of snow showers. The coldest air so far pushes in on Thursday night and overnight lows could bottom out in the teens in some spots. After that, we’ll be watching the progression of another low pressure system to our south which could produce some snow around here by the end of the week.
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December begins on a chilly note and it looks like much of the first half of the month will feature colder-than-normal temperatures in the eastern half of the nation. In addition, the overall pattern looks to remain quite active with a couple of winter weather threats during the next several days. High pressure will build into New England today and then retreat to the northeast on Tuesday at the same time low pressure pushes toward the Mid-Atlantic coastline. Precipitation is likely to reach the area around or just before dawn and it could be cold enough for snow in most places. As the high retreats to the northeast, enough milder ocean air will push in to produce a changeover of the snow to rain and there can be icing for awhile during the transition. Accumulations are possible before the changeover on the order of a coating to an inch or two in some of the northern and western suburbs…lowest amounts in the NYC metro area. High pressure takes control of the weather for the mid-week and then a cold front arrives by Thursday night perhaps associated with a couple of snow showers. The coldest air so far pushes in on Thursday night and overnight lows could bottom out in the upper teens in some spots. After that, we’ll be watching the progression of another low pressure system to our south which could produce some snow and ice around here by the end of the week.
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December begins on a chilly note and it looks like much of the first half of the month will feature colder-than-normal temperatures in the eastern half of the nation. In addition, the overall pattern looks to remain quite active with a couple of winter weather threats during the next several days. High pressure will build into New England today and then retreat to the northeast on Tuesday at the same time low pressure pushes toward the Mid-Atlantic coastline. Precipitation is likely to reach the area around or just before dawn and it could be cold enough for snow in most places. As the high retreats to the northeast, enough milder ocean air will push in to produce a changeover of the snow to rain and there can be icing for awhile during the transition. Accumulations are possible before the changeover on the order of a coating to an inch in the DC metro and up to a couple of inches in some of the far northern and western suburbs. High pressure takes control of the weather for the mid-week and then a cold front arrives by Thursday night perhaps associated with a couple of snow showers. The coldest air so far pushes in on Thursday night and overnight lows could bottom out in the upper teens in some spots. After that, we’ll be watching the progression of another low pressure system to our south which could produce some snow and ice around here by the end of the week.
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Several inches of snow will pile up this weekend across a large part of the Midwest and Great Lakes (where they are still reeling from some intense lake-effect snow bands) and another winter storm will hit the Mid-Atlantic region and Northeast US on Tuesday. The best chance for significant snow on Tuesday will be across the interior sections of the northeastern states and heavy rain is the main threat along coastal areas from southern NJ to the Carolinas. The I-95 corridor will likely be in a battle zone period for awhile on Tuesday with some accumulating snow and ice possible at the front end, but a changeover to rain is likely; especially, in the big cities from DC-to-Philly-to-NYC.
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A strong cold front passed through the region late yesterday paving the way for a chilly Turkey Day and the chill remains into the upcoming weekend. Temperatures this afternoon will do no better than 50 degrees for afternoon highs and will likely drop to below freezing on Thursday night and Friday night as well. Looking ahead, low pressure may ride up along a frontal boundary zone early next week and it could potentially bring a heavy rain event to the area.
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A strong cold front passed through the region late yesterday and a secondary cold front will pass through later today. Temperatures tumbled in the overnight hours and will be colder-than-normal today, tomorrow, and right through the upcoming weekend. Winds will become quite a noticeable factor as well strengthening during the day and gusting at 35+mph on Thursday night and Friday. This Arctic air outbreak will set off another round of Great Lakes-effect snows and there can be a couple of snow showers that make their way across the mountains and into the immediate I-95 corridor. Looking ahead, low pressure may try to ride up along an Arctic frontal boundary zone early next week and we’ll have to watch for a threat of rain, ice and/or snow in the Mid-Atlantic region during the Tuesday/Wednesday time period.
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Mild and dry conditions will be the rule for today and Friday, but big changes are coming for the upcoming weekend. Much colder air floods the region on Friday night and it will come with the threat for snow from late Friday night into Saturday morning. Winter weather will continue Sunday as well with a second round of snow possible and temperatures confined to the low-to-mid 30’s for afternoon highs.
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A strong cold front passed through the region late yesterday and a secondary cold front will pass through later today. Temperatures tumbled in the overnight hours and will be colder-than-normal today, tomorrow and right through the upcoming weekend. Winds will become quite a noticeable factor as well strengthening today and gusting at 35+mph on Thursday night and Friday. This Arctic air outbreak will set off another round of Great Lakes-effect snows and there can be a couple of snow showers that make their way across the mountains and into the immediate I-95 corridor. Looking ahead, low pressure may try to ride up along an Arctic frontal boundary zone early next week and we’ll have to watch for a threat of rain, ice and/or snow in the Mid-Atlantic region during the Tuesday/Wednesday time period.
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A strong cold front passed through the region late yesterday and a secondary cold front will pass through later today. Temperatures tumbled in the overnight hours and will be colder-than-normal today, tomorrow, and right through the upcoming weekend. Winds will become quite a noticeable factor as well strengthening during the day and gusting at 35+mph on Thursday night and Friday. This Arctic air outbreak will set off another round of Great Lakes-effect snows and there can be a couple of snow showers that make their way across the mountains and into the immediate I-95 corridor. Looking ahead, low pressure may try to ride up along an Arctic frontal boundary zone early next week and we’ll have to watch for a threat of rain, ice and/or snow in the Mid-Atlantic region during the Tuesday/Wednesday time period.
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The period between Thanksgiving and Christmas will begin with a major Great Lakes snow event from Thursday to Friday and an Great Lakes/Midwest snowstorm this weekend and it could end with a White Christmas in many parts of the country. Two of the factors that have been highlighted here, likely leading to a cold and active stretch of weather, include an unusual early season stratospheric warming event and the likely movement of a tropical disturbance into a location that favors colder-than-normal conditions across a large part of the nation. Both of these phenomena – stratospheric warming and tropical forcing – will likely lead to a “buckling” of the polar jet stream which can lead to the unleashing of multiple Arctic air masses from northern Canada into the US (with intense cold in the table), and an activation of the southern branch of the jet stream which will likely produce multiple snow/ice threats.
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