The 7-day period from 14 January to 20 January was very cold across most of the nation with the mean temperature anomaly of -11°F in the Lower 48. The next 7-days will be quite a different story as a milder weather pattern develops for much of the country. This warm-up, however, will not come without wintry threats in the Mid-Atlantic region and Northeast US. The change in the overall pattern will bring copious amounts of rainfall for the Lower Mississippi Valley region in the near-term and plenty of moisture-filled storm systems for the US west coast during the next couple of weeks.
In the near term, there is likely to be some freezing rain from later Tuesday night into early Wednesday across much of Pennsylvania and northern New Jersey and maybe all the way into the nearby N/W suburbs of Philly and NYC and the far N/W suburbs of DC. It does turn wet and milder in the Mid-Atlantic region during the second half of the week with the warmest day likely to be on Friday when temperatures will surge. Another storm system is then likely to impact the Mid-Atlantic/Northeast US late in the upcoming weekend with one surface low pressure system (primary) heading into the Ohio Valley and a secondary likely to form near the Mid-Atlantic coastline. While there will be little cold air around initially, strong high pressure will build into southeastern Canada and act as a cold air source…possibly resulting in a changeover from rain-to-snow across interior sections of the Mid-Atlantic/Northeast US. Looking ahead, there are signs that an overall colder weather pattern may re-develop in the central and eastern states as we progress through the early part of February and towards the middle of next month.
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Arctic chill continues to have the Mid-Atlantic region in its grips this morning with many spots in the teens and there are a few places in the single digits across interior sections of New Jersey. After highs in the 30’s later today, temperatures should reach 40+ degrees on Tuesday afternoon. There will be a chance of some rain late tomorrow night and it can freeze on some surfaces across the far northern and western suburbs…something to watch for going into Wednesday morning. The weather does turn noticeably milder during the second half of the week and it’ll be quite unsettled as well with multiple chances for rain.
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Another round of accumulating snow gets underway early today in the NYC metro as low pressure intensifies off the Carolina coastline. The snow will come down at varying rates around here during the day with likely final accumulation amounts of 2-4 inches by the early part of tonight and isolated higher amounts are possible. An Arctic air mass will follow this system with some bitter cold conditions for the weekend, but the chill will slowly fade away during the early part of next week. In fact, rain may return to the forecast by the middle and latter parts of next week as a “January thaw” develops and takes us to the end of the month.
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Another round of accumulating snow is headed to the Mid-Atlantic region on Friday and it should get underway early in the day in the DC-to-Philly-to-NYC corridor. This is a dynamic storm system that will have strong upper-level support and complicating factors will include small-scale heavier snow bands that are likely to develop and an inverted (aka “norlun”) trough that will extend northwestward back to the Mid-Atlantic region from the low pressure center out over the western Atlantic. On the heels of the snow, another Arctic air mass will plunge into the eastern US for the weekend and lower teens or even upper single digit overnight lows will be possible in many suburban locations. Looking ahead, the Arctic chill will dissipate early next week and we’ll turn warmer-than-normal for the middle and latter parts with rain likely back into the forecast.
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Another round of accumulating snow is headed to the NYC metro region on Friday as low pressure intensifies just off the Carolina coastline. The snow should arrive between 4 and 8 AM and snowfall estimates are 2-4 inches across the area. On the heels of the late week snow event, another Arctic air mass will plunge into the eastern states from Canada and single digits lows will be possible this weekend in some suburban locations. Looking ahead, the Arctic chill will fade away around here early next week and we’ll turn warmer-than-normal for the middle and latter parts of next week with rain likely back in the forecast.
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Accumulating snow fell in the Mid-Atlantic region from Monday into Tuesday and a second such event is headed this way for the end of the work week. Snow should develop early in the day on Friday in the DC-to-Philly-to-NYC corridor as low pressure starts to intensify just off the Carolina coastline aided by vigorous support in the upper part of the atmosphere. On the heels of the late week snow event, another Arctic air mass will plunge into the eastern US from Canada and single digits lows will be possible this weekend in some suburban locations. Looking ahead, the Arctic chill will dissipate around here early next week and we’ll turn warmer-than-normal for the middle and latter parts of next week with rain likely back in the forecast.
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Very cold air has poured into the region on the heels of yesterday’s snow and temperatures today will be hard-pressed to climb past the middle 20’s for afternoon highs and stiff winds will make it feel even colder than the actual air temperature. Another coastal low pressure system is likely to bring us accumulating snow on Friday and cold high pressure will follow for the weekend anchoring an Arctic air mass.
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There will be occasional snow today that will become mixed with freezing rain/sleet in the afternoon…additional accumulations of 1-2 inches likely and there can be a touch of ice as well. Low pressure pushes off to our northeast and very cold air will flow into the area on its backside. Temperatures later tonight could drop to the teens with the influx of Arctic air and fresh snow cover. Another accumulating snow event is on tap for the end of the work week and this storm system will be followed by another Arctic blast for the upcoming weekend.
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During the past couple of years, many spots along the DC-to-Philly-to-NYC corridor have not had more than an inch of snow in any single event…that “snow drought” is about to end. In fact, there will likely be two accumulating snow events this week in the Mid-Atlantic region with the first one from later today into Tuesday likely resulting in a general 2-4 inch snowfall and there can be isolated higher amounts of 5 inches. The second accumulating snow event comes at week’s end and this one has the potential to produce significant snowfall amounts. This late week system will be followed by an Arctic blast for the upcoming weekend in the Mid-Atlantic region. Temperatures are likely to climb back to above-normal levels later next week, but Arctic outbreaks are destined to return to the central and eastern US during late January and February given the on-going stratospheric warming event over the northern hemisphere polar region.
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Low pressure will begin to intensify just off the Carolina coastline by later today and then push northeastward on Tuesday just off the east coast. Snow develops here later tonight and continues on Tuesday with 2-4 inches likely and isolated higher amounts of 5 inches possible…the most snowfall in many spots in a couple of years. High pressure will then take control at mid-week and then another coastal low pressure system is likely to develop on Friday with the potential of bringing significant snowfall to the Mid-Atlantic region. Signs point to another Arctic blast to follow making for very cold conditions during the upcoming weekend with single digits lows possible in many suburban locations of the Mid-Atlantic region.
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