An Arctic front will sweep through the region early on Friday and this will usher in severe cold for Friday, Friday night, and Saturday. The winds will pick up noticeably as well leading to painfully low wind chill values in this upcoming two-day Arctic blast. Temperatures should bottom out in the single digits later Friday night/early Saturday morning and persistent stiff NW winds will make it feel even much colder than the actual air temperatures. Temperatures will moderate noticeably by Sunday afternoon as high pressure pushes offshore and a low-level southwesterly flow of air develops in the Mid-Atlantic region.
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After the threat of snow showers early today, high pressure will take back control of the weather this afternoon and clearing skies will develop in the Mid-Atlantic region. After a moderately cold day on Thursday, an Arctic front will head in this direction and blast through early Friday morning. This frontal passage will usher in a brutally cold air mass for Friday and Saturday with single digit late night lows – zero degrees is even on the table – and painfully low wind chill values.
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It won’t be a big deal, but compared to the snow (or lack thereof) so far this winter season, the coating to an inch or so of snow that can fall late tonight/early Wednesday in the DC-Philly-to-NYC corridor may seem like quite a bit. Low pressure that is now creating significant icing problems across Arkansas and Texas will move along a stalled-out frontal boundary zone and it should make it far enough to the north to produce some snow in the Mid-Atlantic region from later tonight into early Wednesday. After a moderately cold day on Thursday, an Arctic front will blast through the Mid-Atlantic/Northeast US by early Friday and this frontal passage will usher in a brutally cold air mass for Friday and Saturday. In fact, single digit lows are likely on Friday night all the way down to the Philly metro region and zero degrees is on the table for New York City. In addition, wind chills will cause some pain in this short-lived, but very impressive Arctic blast.
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The biggest weather story of the week will come from Friday into Saturday as we’ll be dealing with an “in and out” bitter cold air mass moving into the NE US/Mid-Atlantic from eastern Canada. Temperatures later Friday night/early Saturday can bottom out in the single digits in the NYC metro region as very strong and cold Canadian high pressures edges into the Northeast US.
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A cold front will slowly works its way through the region later today and then stalls out just to the south of here. A series of low pressure systems will ride along the frontal-boundary zone over the next few days at the same time colder air seeps in from the northwest. It appears these systems will stay far enough to the south of here for any precipitation, but something to monitor next few days. The bigger story of the week will be the change to colder conditions and there is a good chance for bitterly cold weather from Friday into Saturday with zero degrees on the table later Friday night.
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High pressure has pushed into the northeastern part of the nation and will control our weather into the weekend. A cold front heads our way later Sunday and it can bring some rain to the region. This front stalls out to our south next week and a series of low pressures may ride along the frontal boundary zone bringing us the chance for rain, ice and/or snow.
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The storm that impacted the Mid-Atlantic region on Wednesday continues to intensify as it moves northeastward towards the Canadian Maritime provinces. The pressure gradient between the departing low and an incoming high pressure system will tighten today and the result here can be gusts of up to 40 mph or so. High pressure will then take control for the end of the week and upcoming weekend with a continuation of moderately chilly conditions.
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Precipitation is likely to arrive here during the late morning/midday hours and it can be in the form of snow for a brief time. Any snow will transition to rain later in the day as milder air surges up along the coastline. Accumulations of a coating to an inch or so are possible before a changeover to rain. Some of the rain later today and early tonight can fall heavily at times. On the back side of the storm, NW winds will increase noticeably on Thursday with gusts to 50 mph possible, and it’ll be a moderately chilly day with high pressure headed this way.
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A significant winter storm is developing today over Texas and this moisture-laden system will push northeastward over the next 24 hours bringing significant snowfall all the way from Texas to the Midwest. In the Mid-Atlantic region, snow is likely to break out on Wednesday morning in areas to the north of the PA/MD border and there can be some minor accumulations before a changeover to rain later today as milder air surges northward along the coast.
Looking ahead, widespread colder-than-normal air is going to push into the northern and western US early next week and it’ll likely spread into the Mid-Atlantic/Northeast US by late next week. Whether or not this change to colder-than-normal conditions is sustained in the Mid-Atlantic/Northeast US after next week will largely depend on the stubborn high pressure ridge aloft over the southwestern Atlantic/Southeast US. Elsewhere, there has been some amazing cold on the other side of the North Pole with the lowest temperature ever recorded in China on Monday and this follows some tremendous cold last week in Russia (Siberia). This frigid air is now spreading to the Korean Peninsula and on the way to Japan where there can also be some all-time low temperatures.
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The active weather pattern will bring us another storm system to deal with on Wednesday and this one may feature some accumulating snow at the onset. Low pressure will develop today over Texas and abundant moisture will feed into the system from the Gulf of Mexico. On Wednesday, this surface low pressure system will push northeastward with its large moisture field advancing to the Midwest and Mid-Atlantic. Another key player in the upcoming mid-week event will be strong high pressure that forms over southeastern Canada. This high will anchor an air mass that will be cold enough for widespread accumulating snow across the Midwest, interior Mid-Atlantic and much of the Northeast US. In the local area, there is likely to be some snow at the onset with up to an inch or two possible before any changeover to rain later in the day.
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