An active weather pattern will continue into the new year for the eastern half of the nation with one low pressure system bringing a potpourri of precipitation on Friday and then a second system late in the weekend that should intensify near the Mid-Atlantic coastline. The first system will result in accumulating snow for parts of the Upper Midwest and Ohio Valley on New Year’s Day (Friday) and mainly a rain event for the Mid-Atlantic region. However, it can be cold enough at the onset on Friday in the Mid-Atlantic region for a brief period of sleet and/or freezing; especially, in areas north of the PA/MD border. Late in the weekend, a second low pressure system will likely intensify near the Mid-Atlantic coastline and it would have an influx of colder air – a potential setup that needs to be monitored in coming days.
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A cold frontal system slipped through the region in the overnight hours and today will turn out to be quite windy and cold despite mainly sunny skies. High pressure will shift off the coast on Wednesday and another cold front will slide through the region later Thursday. Moisture will arrive here by early Friday as strong low pressure pulls out of the southern states and heads towards the Ohio Valley. This system will result in mainly a rain event here on New Year’s Day, but it may be cold enough at the onset for a bit of sleet and/or freezing rain at the onset in some of the far northern and western suburbs with a cold air mass in only slow retreat. It’ll turn milder by Friday night and Saturday before another cold front pushes across the region late Saturday and then we’ll have to watch for a potential low pressure system to develop near the east coast on Sunday.
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A powerful cold front will barrel towards the eastern seaboard from later today into early Friday and it’ll bring some wild weather to the Mid-Atlantic/Northeast US. Ahead of the front, heavy rains, possible thunderstorms and potentially damaging winds will develop and raise the prospects for localized flooding and power outages. It’ll become much milder as well today with temperatures soaring to the 60 degree mark by late in the day in the DC metro region. On the back side of the front, temperatures will plunge early on Friday and hold steady during the day. Any standing water on untreated surfaces that is left behind by the heavy rain event could freeze-up in a hurry early Friday as temperatures take that plunge. The cold air mass will stick around into the weekend with temperatures on Saturday struggling to reach the freezing mark.
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A powerful cold front will barrel towards the eastern seaboard from later tomorrow into early Friday and it’ll bring some wild weather to the Mid-Atlantic/Northeast US. Ahead of the front, heavy rains, possible thunderstorms and potentially damaging winds will develop and raise the prospects for localized flooding and power outages. It’ll become much milder as well on Thursday with temperatures soaring to the 60 degree mark in the DC, Philly and NYC metro regions. On the back side of the front, temperatures will plunge on Friday from their early morning highs to at or below freezing by later in the afternoon. Any standing water on untreated surfaces that is left behind by the heavy rain event could freeze-up in a hurry on Friday as temperatures take a plunge.
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A powerful cold front will come barreling towards the east coast from tomorrow night into early Friday and it’ll bring some wild weather with it to the Mid-Atlantic region for the night of Christmas Eve. Ahead of the front, there will be heavy rain, possible thunderstorms, and potentially damaging wind gusts which, unfortunately, raises the prospects of power outages. It’ll become much milder as well on Thursday with temperatures likely flirting with the 60 degree mark for late day highs. The combination of heavy rainfall and already wet grounds will likely lead to localized flooding in areas of poor drainage. On the back side of the front, temperatures will drop rapidly in the wee hours of the morning on Friday and hold in the low-to-mid 30's during Christmas Day. The cold air mass will stick around as we begin the upcoming weekend with temperatures on Saturday struggling to pass the 30 degree mark.
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A powerful cold front will come barreling towards the eastern seaboard later this week and it’ll bring some wild weather with it to the Mid-Atlantic/Northeast US from later Christmas Eve (Thursday) into early Christmas Day (Friday). Ahead of the front, there will be heavy rain, possible strong thunderstorms, and potentially damaging winds which, unfortunately, raises the prospects of power outages. It’ll become much milder as well on Thursday with temperatures likely flirting with the 60 degree mark for late day highs in places like DC, Philly and NYC. The combination of heavy rainfall and mild conditions will cause a rapid melting of snow and this is likely to lead to localized flooding in areas of poor drainage.
On the back side of the front, temperatures will drop rapidly following the heavy rain event to below the freezing mark in many spots resulting in a quick freeze-up of standing water on untreated surfaces. Snow accumulations of several inches are likely in the colder air mass across portions of the Ohio Valley and interior Mid-Atlantic/Northeast US. There can even be a brief changeover to sleet and/or snow in the I-95 corridor early Friday morning as the colder air rushes into the region, but a “flash freeze” is the greater concern.
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The main weather event this week will be the passage of a strong cold front late Thursday night that will usher in a cold air mass for Christmas Day (Friday). This strong front will be preceded by heavy rain from later Thursday into Thursday night and it’ll turn quite mild on Christmas Eve with late day temperatures flirting with the 60 degree mark in the DC-to-Philly-to-NYC corridor. Winds will become an important factor as well later on Thursday and Thursday night with gusts past 40 mph possible and there can be a thunderstorm mixed in. On the backside of the front, temperatures will drop quickly early Friday, any standing water will freeze, and there can be a brief period of snow and/or sleet after the heavy rain event. The much colder air that arrives on Friday will stick around into the upcoming weekend and temperatures on Saturday will struggle to pass the freezing mark for highs.
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An active weather pattern continues this week in the central and eastern US with the main weather event being the late week passage of a powerful Arctic cold frontal system. This front will result in a heavy rain event for the Mid-Atlantic/NE US from late Thursday into Thursday night which will be accompanied by strong winds, mild conditions and a possible thunderstorm. With snow cover still in place in many areas north of the PA/MD border, the upcoming heavy rain event may lead to localized flooding conditions.
Behind the front, temperatures will drop sharply potentially leading to a quick ice-up in some spots and inland areas from West Virginia to central/western NY will likely see accumulating snow. In fact, there can even be some small accumulations of snow early Friday in the I-95 corridor on the heels of the frontal passage; especially, in some of the northern and western suburbs. The much colder air that arrives on Christmas Day (Friday) will stick around into the upcoming weekend and next week promises to be quite energetic with the potential of multiple storm threats to monitor.
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An active weather pattern will continue this week with a wave of energy in the Mid-Atlantic region coming our way this evening and the arrival of a powerful Arctic cold front on Thursday night. The early week upper-level wave of energy can set off some rain and/or snow shower activity tonight and unfortunately, it'll likely prevent a view of the "great conjunction" of Jupiter and Saturn. The late week Arctic front is likely to feature milder and windy conditions on its front side in this area along with periods of rain, some of which can be heavy at times. Following the passage of the strong cold front, it’ll turn much colder on Friday and there can be a snow shower or two along with stiff NW winds.
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The first major winter storm of the season for the Mid-Atlantic/Northeast US has just passed and the overall weather pattern is likely to remain quite volatile through the remainder of the month. There will be numerous strong waves of energy in coming days that will head into the eastern states. In addition, all signs point to a continuation of cold air outbreaks for the central and eastern US over the next couple of weeks. In fact, perhaps the coldest air mass of the season so far could push into the central US by the middle of next week and arrive in the eastern states by Christmas Day (Friday). There is also a chance that heavy rain and accumulating snow will accompany the arrival of the cold blast late next week in the Mid-Atlantic/Northeast US.
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