High pressure will remain in control of the weather in the Mid-Atlantic region during the next few days with the continuation of dry conditions. It’ll remain moderately cold today and the passage of a weak cold front early tomorrow will usher in a reinforcing chilly air mass for Wednesday and Thursday. It does turn milder on Friday and the milder conditions should last through the upcoming weekend. Strong low pressure may turn up along the eastern seaboard by the end of the weekend and it could result in rain and wind around here for Sunday night and Monday.
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After the passage of a strong cold front and associated low pressure system, snow and rain showers will wind down this morning and winds will remain strong today as high pressure edges into the Mid-Atlantic region. Cold air has poured into the eastern states on W-NW winds and those winds can gust to 35 mph throughout the day before slowly diminishing this evening. The chilly air mass will stick around in the Mid-Atlantic region for much of the week with high temperatures generally confined to the 40’s through Thursday.
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A heavy rain event in the Mid-Atlantic’s I-95 corridor gets underway this morning and continues into Sunday night with increasingly strong winds that develop ahead of an incoming strong cold front. Flash flooding will become an increasing concern during this event with as much as 2-3 inches of rainfall possible in many areas by early Monday. In addition, with an eventual shifting of the main surface low pressure system to the northern Mid-Atlantic coastline, there is a threat for back-end accumulating snow in the late overnight/early Monday morning hours all the way into and especially to the N/W of the I-95 corridor. Significant snow is likely to fall during this storm across interior, higher elevation locations of the northeastern states from northeastern PA to northern New England.
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Some wild weather is coming to the DC 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 with small accumulations possible in 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 snow today across southern sections of Pennsylvania and likely as far south as northern Maryland. It turns noticeably 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 just 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 it’ll remain cold in the Mid-Atlantic region with a noticeable breeze developing as well. Another “clipper” system will drop southeast from the Great Lakes on Thursday and it can produce a couple of snow showers across the northern suburbs; however, most of its limited moisture will stay north of the PA/MD border. 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 soaking 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 likely 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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