Some wild weather is coming to the Philly metro region late Sunday/Sunday night with heavy rain, powerful winds, squall line with thunderstorms, tumbling temperatures, and even a changeover to snow all on the table and small accumulations are possible in some of the northern and western suburbs.
It turns milder today and the mild conditions will continue through much of the day on Sunday. A strong cold front will slowly slide eastward on Sunday and low pressure will intensify along the frontal boundary zone. Ahead of the cold front, rain will break out on Sunday and become heavy at times by Sunday night. Winds will become a big factor as well with potentially damaging wind gusts; especially, along coastal sections during this late weekend event. After the passage of the cold front, temperatures will tumble later Sunday night and the rain can transition to snow for a brief time with some small accumulations possible in the N/W suburbs. The weather settles down on Monday, but it’ll remain moderately cold through much of the first half of next week.
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There were snowflakes in the air in parts of the Mid-Atlantic region on Wednesday and another system is going to produce some snow around here today probably beginning between 8 and 9 am and ending around mid-day. Small accumulations of a coating to an inch are certainly on the table…watch out for slippery spots. It turns milder on Friday and the mild conditions will continue through much of the day on Sunday.
The weekend will end with some wild weather conditions as a strong cold front slides slowly from west-to-east and towards the eastern seaboard. Strong low pressure will form along the frontal boundary zone and the result here will likely be heavy rain and possible strong thunderstorms. In addition to the rain, winds will become a big factor with potentially damaging gusts from later Sunday into Sunday night. After the passage of the cold front, temperatures are likely to tumble on Sunday night and the rain can transition to snow/ice for a brief time in areas to the north and west of the I-95 corridor.
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Signs continue to point to a heavy rain event for the Mid-Atlantic/Northeast US in the late Sunday/Sunday night time period with strong and potentially damaging winds. In addition, with an eventual shifting of the main surface low pressure system to the east coast, there is a threat for back-end snow and/or ice across interior, higher elevation locations. In fact, this changeover threat across interior sections may actually be increasing as we get closer to event time with the expected storm track now somewhat slightly farther to the south and east. This trend allows for a quicker intrusion of colder air on the tail end of the storm. As it stands now, several inches of snow are possible across upstate New York and interior sections of New England and perhaps some frozen precipitation can make it not too far to the northwest of the I-95 corridor. Elsewhere, this weekend storm system may threaten the Deep South with severe weather including possible tornadic activity in the region from Arkansas/Louisiana to Alabama.
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Low pressure intensifies offshore today and snow and/or rain showers are likely around here with a noticeable breeze developing as well. There can be a small accumulation in some spots in the normally colder N/W suburbs. Another “clipper” system will drop southeast from the Great Lakes on Thursday and it too can produce snow showers in the Philly metro region with a small accumulation on the table. It turns much milder at the end of the week and the mild conditions will continue through the weekend. A strong cold front will slide in this direction on Sunday and this can lead to a heavy rain event along the eastern seaboard. In addition to the potential of heavy rainfall, winds may become very strong late in the weekend and thunderstorms may be mixed into the picture as well. A colder air mass will follow into the eastern states for the first half of next week.
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Clouds will increase today ahead of a weak “clipper” system that drops southeast across the Upper Midwest on its way to a position over the western Atlantic by early Wednesday. This system is limited in its moisture content and, as such, is unlikely to produce anything more than a bit of rain and/or snow around here from later tonight into early Wednesday. It stays on the cold side behind it through the day on Thursday, but then turns noticeably milder for Friday and Saturday. A strong cold front approaches on Sunday and this could lead to a soaking rain event along the eastern seaboard to close out the upcoming weekend with a cold shot to follow for the early part of next week.
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It appears more and more likely that there will be quite a strong and impactful storm system this weekend which could have an impact on a wide part of the eastern half of the nation. If ingredients come together, this storm system could produce heavy rain along the eastern seaboard with strong and potentially damaging wind gusts, a strip of heavy snow from the Mississippi Valley to the Great Lakes, and possibly some severe weather in the Deep South. On its heels, a cold air outbreak will encompass much of the eastern half of the country during the first half of next week.
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A relatively weak high pressure system pushes into the Mid-Atlantic region today on the heels of low pressure that is now working its way into southeastern Canada. There will be a weak “clipper” system that drops southeast from Canada into the northern US on Tuesday and it could produce a bit of rain and/or snow in the Mid-Atlantic region later tomorrow night into early Wednesday. High pressure returns for the latter part of the week with with dry weather expected here on Thursday and Friday and it turns milder by the weekend.
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December will begin with chilly conditions in the Philly metro region and quite likely some rainfall during the late afternoon and evening hours. Low pressure pushes towards the Great Lakes later in the day and its moisture field will advance in this direction resulting in some rain here and then a cold front passes through in the overnight hours. The weekend turns milder and starts out on the dry side; however, there will likely be lots of clouds around on Saturday and occasional showers can return on Saturday night and Sunday. Looking ahead, a “clipper” system will drop southeast from Canada next week and it could bring some snow and/or rain to the Mid-Atlantic region by mid-week.
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Temperatures will moderate some today under mostly sunny skies, but will still remain a bit below-normal for the last day of November. Low pressure will approach the area on Friday and there can be some PM rainfall along with chilly conditions. Other waves of low pressure will move up from the south this weekend providing us with additional opportunities for rainfall in the Philly metro region and it’ll turn even milder for both days.
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The first snowflakes of the season were seen by many in the Mid-Atlantic region on Tuesday and today’s early morning temperatures are at their lowest levels for most. This is not, however, the beginning of a sustained winter weather pattern as temperatures will return to more seasonal levels on Thursday and rain can fall here on Friday. It stays seasonally cool this weekend with lots of clouds and more rain is a possibility from a couple of different low pressure systems.
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