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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As one storm continues to impact the Mid-Atlantic region with lingering rain and snow, the seeds for the next system are rolling through the southwestern states in the form of a vigorous upper-level low. This feature will drift into Texas on Tuesday and help generate surface low pressure 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 system will anchor an air mass that will be cold enough for widespread accumulating snow across the Midwest, interior Mid-Atlantic and Northeast US. There is likely to even be some accumulating snow at the onset in portions of the I-95 corridor of the Mid-Atlantic on Wednesday before the precipitation ultimately changes to plain rain.
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As low pressure pulls away to the northeast of here today, some rain will continue to fall at times this morning and snowflakes can mix in during the mid-day and afternoon. Winds will intensify this afternoon from a northwesterly direction and can gust to 30 mph or later in the day. High pressure returns to the area for a brief time on Tuesday and then the next storm in this active weather pattern arrives on Wednesday. It should be cold enough for some accumulating snow at the onset on Wednesday - perhaps a couple of inches - but an eventual changeover to plain rain is expected. High pressure will return on Thursday following the passage of the mid-week storm system along with the return of strong NW winds.
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High pressure will take control of the weather around here today bringing us some sun, dry conditions, and a gusty wind through Saturday. The next low pressure system pushes this way later Sunday and it’ll likely produce rain here into the day on Monday. There is an outside chance that enough cold air will be around to allow for some snow in areas to the north and west of I-95 for part of this event. Another storm looks likely by the middle of next week in the Mid-Atlantic region bringing us rain and/or snow.
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