An active weather pattern continues…
Following the passage of last night’s strong cold front, winds will remain quite noticeable today from a northwesterly direction and it’ll be much colder than yesterday which featured some record-breaking warmth in the Mid-Atlantic region. High pressure will move overhead later today as it pushes eastward from the Upper Midwest. Clouds will thicken up this evening as low pressure begins a push from the Tennessee Valley towards the southern Mid-Atlantic coastline. By early tomorrow, precipitation will break out and it can be cold enough for some snow – even in the immediate I-95 corridor from DC-to-Philly-to-NYC. As is often the case with daytime snow events this time of year, the greatest chances for snow accumulations will be on grassy surfaces and in the northern and western suburbs; especially, in any higher elevation location. Looking ahead, another very active frontal passage will take place in the Friday night-Saturday night time period…more on that later.
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Talk about some wild weather…
The Mid-Atlantic region will experience some March madness of its own over the next 48 hours or so with record-warmth today along with high winds and late day/evening heavy showers and scattered strong-to-severe thunderstorms and then much colder conditions by mid-week with the chance for accumulating snow. Today’s weather is courtesy of an approaching strong cold frontal system that will pass through the area tonight and set the stage for much colder weather by mid-week. Low pressure will push towards the southern Mid-Atlantic coastline by early Wednesday and it can be cold enough for some accumulating snow in parts of the Mid-Atlantic region. Another impressive cold blast will reach the eastern states early in the upcoming weekend.
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Some wild weather in the Mid-Atlantic region during the next few days. There will be unusual warmth today throughout the Mid-Atlantic region with record-breaking highs possible in some spots - all ahead of a strong cold frontal system. In addition, winds will be increasingly strong and gust past 50+ mph later in the day from a southwesterly direction and they’ll remain strong tonight shifting to a northwesterly direction following the passage of a strong cold front. Showers are likely late in the day and this evening and perhaps a strong-to-severe thunderstorm as the front arrives. Much colder air pushes in on Tuesday and Tuesday night and low pressure will head towards the coastline on Wednesday. It can be cold enough at mid-week for snow in parts of the Mid-Atlantic region and some accumulations are on the table….stay tuned.
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A strong cold front is pushing through the region this morning and today will turn out noticeably colder than yesterday and overnight lows are liable to be in the teens in many suburban locations. After a cold day on Friday, it’ll begin to turn noticeably milder on Saturday and then even warmer for Sunday and Monday. The warm up will likely feature some rain in the Mid-Atlantic region during the second half of the weekend and the early part of next week.
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A weak cold front passed through the region last night, but its passage will have little to no impact on temperatures in the region here at mid-week. In fact, it should turn out to be a bit milder today, but then another cold front will push through early tomorrow and it has more of a cold air push behind it. It’ll turn out colder on Thursday following the passage of this next front and temperatures tomorrow night could bottom out in the upper teens in many spots. After a chilly, Friday, it turns much milder by later this weekend and the second half can feature some shower activity.
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A weak cold front will push towards our area today with lots of clouds and maybe a nighttime shower, but its passage will have little impact on temperatures for Wednesday. In fact, it should turn out a bit milder tomorrow and then a weak “clipper” system will drop this way on Thursday from northwest-to-southeast and it could produce a snow shower in the region. It turns colder behind that system to end the work week, but then milder weather returns here this weekend and there can be some shower activity to accompany the warm up.
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A cold front passed through the region last night and the new work week will start off quite chilly and well below-normal for the end of February (normal high now at PHL is 47 degrees). A weak cold front will arrive on Tuesday night, but with little impact around here at mid-week in terms of temperatures. After that, a weak “clipper” system with limited moisture will drop from northwest-to-southeast later in the week and a warm front will approach us this weekend raising the chances for some rain in the Mid-Atlantic region.
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Roads are mainly just wet early today, but watch for slippery spots as temperatures are still near the freezing mark in many areas. Overall conditions will improve in the region later in the morning as temperatures climb above the freezing mark and they’ll peak in the low-to-mid 40’s this afternoon. In addition to the lingering freezing rain/rain, winds will be an important factor today gusting up to 30 mph or so. High pressure takes control this weekend with cold conditions on Saturday and less harsh weather on Sunday. Much colder air will return to the Mid-Atlantic region on Monday following the passage of a cold frontal system at the end of the weekend.
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Temperatures tumbled in the overnight hours in the Mid-Atlantic region following the passage of a cold frontal system and setting the stage for a wintry mess from today into early Friday. In fact, temperatures dropped nearly 40 degrees in the I-95 corridor from the lower 70’s on Wednesday afternoon to the lower 30’s by early today as high pressure strengthened into southeastern Canada. From this location, this high pressure system will act as an anchor and a source region for cold air during the next 24 hours – a classic “cold air damming” pattern for the northeastern part of the nation. This kind of an atmospheric setup is setting the stage for mixed precipitation today and an icy buildup later tonight for many in the Mid-Atlantic region and there will likely be an impact on the Friday AM commute.
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Much colder air has moved into the Mid-Atlantic region following the passage of a cold frontal system and moisture will head this way in two different waves. During the day, any snow and/or sleet that falls is likely to be scattered and generally on the lighter side, but as a stronger low pressure system heads our way early tonight, the precipitation shield will expand and intensify across Pennsylvania. There can be sleet or rain changing to sleet later this evening to be followed by a period of freezing rain. The freezing rain can cause a buildup of ice later tonight of up to a quarter of an inch on untreated surfaces and this always raises the concern of power outages. The Friday AM commute is likely to be an icy mess in the N/W suburbs of Philly as temperatures will hover for awhile near the freezing mark. Plain rain is possible later tomorrow morning in the suburbs as temperatures climb above freezing reaching into the 40’s later tomorrow.
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