An Arctic air mass that had its origins right near the North Pole will invade the eastern US early next week and there will be impacts felt all the way down to Florida. This will be the coldest air mass so far this season and many spots in the eastern states will experience their first hard freeze of the fall. A vigorous upper-level low will accompany this Arctic blast causing widespread unstable conditions and the result will likely be accumulating snow across some of the higher elevation Appalachian Mountains, and just downstream of the Great Lakes in those usual “favored” areas. And given an expected widespread area of unstable conditions, snow showers are even on the table for the immediate I-95 corridor from later Monday into Monday night. Looking ahead, it doesn’t look like there will be any sustained warmup across the northeastern part of the nation following this early next Arctic air outbreak with additional cold shots to follow into mid-month.
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A strong cold front passed through the Mid-Atlantic region last night and today will feature noticeably cooler conditions and quite breezy as well. Another cold front arrives late Friday night and this one should feature some shower activity in the DC-to-Philly-to-NYC corridor; however, temperatures will actually tick up this weekend following its passage.
An Arctic cold front arrives on Sunday night and it’ll usher in the coldest air yet this season for the early part of next week and many areas will experience their first hard freeze on Monday night. The atmosphere will be quite unstable on Monday with a vigorous low aloft and this could lead to some snow shower activity around here and accumulating snow is likely just downstream from the Great Lakes and in the higher elevations of the western Mid-Atlantic (e.g., West Virginia, western MD, western PA).
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An active weather pattern over the next several days will feature a powerful wind event on Wednesday night across many northeastern states and then an Arctic invasion will take place across the eastern states early next week with impacts being felt all the way from Florida-to-Maine. The powerful winds on Wednesday night will be associated with an intensifying low-pressure system that forms along a strong cold frontal boundary zone, and 50-60 mph wind gusts are on the table for the Mid-Atlantic region and Northeast US…some power outages are possible.
By the end of the upcoming weekend, another strong cold front will slide across the Great Lakes and into the eastern states, and this front will be at the leading edge of the coldest air mass of the season so far. Low pressure will develop along the frontal boundary zone, and it will be supported aloft by a vigorous low which will drop south and east into the central Appalachians. This combination of a strong surface low and a powerful upper-level low will ensure accumulating snow in many areas including the Great Lakes and interior sections of the Mid-Atlantic region and Northeast US. In fact, given the high levels of instability expected around here early next week, and the well below-normal temperatures, snow shower activity is certainly on the table all the way into the immediate I-95 corridor.
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High pressure remains in control of the weather in the Mid-Atlantic region for another day providing us with plenty of sunshine and quite breezy conditions. A strong cold front passes through the region later tonight - likely on the dry side - and low pressure will intensify along the frontal boundary zone. The pressure gradient behind the departing strong storm and an incoming high pressure system will tighten dramatically and the result here will be powerful wind gusts tonight of up to 40 mph or so. Another cold front arrives late Friday night and this one may feature some shower activity for the DC-to-Philly-to-NYC corridor; however, temperatures will not change much at all this weekend following its passage.
Looking ahead, there is a third cold front destined to arrive on Sunday night and this one will definitely be noticeable. It is at the leading edge of an Arctic-originated air mass and the early part of next week will feature the coldest weather so far this season and likely the first hard freeze for many spots.
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An active weather pattern over the next several days will feature a powerful wind event on Wednesday night across many northeastern states and then an Arctic air mass will invade the eastern states early next week. The powerful winds on Wednesday night will be associated with an intensifying low-pressure system that forms along a strong cold frontal boundary zone and 60+ mph wind gusts are on the table for some locations. By the end of the upcoming weekend, another strong cold front will slide into the eastern states, and this system will usher in the coldest air of the season so far with the first hard freeze in many spots and accumulating snow will be possible across the Great Lakes, interior sections of the northeastern states.
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High pressure will take control of the weather in the Mid-Atlantic region for today and tomorrow providing us with plenty of sunshine each day and quite breezy conditions. A cold front passes through the Mid-Atlantic region on Wednesday night - likely on the dry side - and it’ll usher in somewhat cooler air for Thursday. Another cold front arrives late Friday night and this one may feature some shower activity for the DC-to-Philly-to-NYC corridor; however, temperatures will not change much at all this weekend following its passage.
Looking ahead, there is a third cold front destined to arrive on Sunday night and this one means business. It is at the leading edge of an Arctic-originated air mass and the early part of next week will feature the coldest weather so far this season and likely the first hard freeze for many areas.
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There will be as many as three cold fronts to deal with in the northeastern part of the nation during the next week or so, but the third system will be the most important and is destined to arrive late in the upcoming weekend. The first cold front comes through on Wednesday night primarily on the dry side and it turns slightly cooler behind it on Thursday. The second cold front then arrives at the end of the work week likely producing some shower activity from late Friday night into early Saturday; however, temperatures will hardly change at all this weekend following its passage. It is the third cold front that arrives on Sunday night that will be very noticeable as it is at the leading edge of an Arctic air mass…the coldest air so far this season. This cold air outbreak early next week may be accompanied by some early season accumulating snow across the Great Lakes, interior sections of the Northeast US and New England.
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Low pressure will push off the Carolina coast today and it looks like its precipitation field will extend north and west to the I-95 corridor. As a result, clouds will be plentiful through early afternoon and there can be a couple of showers in the DC-to-Philly-to-NYC corridor…some clearing late in the day. High pressure is in control for the next couple of days and then one cold front crosses the Mid-Atlantic on Wednesday night and a second one on Friday night.
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The powerful storm system that brought heavy rain and strong winds to the area on Thursday has pushed off to our northeast and there should be some sunshine today in its wake today. But the bigger story will be the howling winds on our Halloween Day which can gust to 45 mph from a west-to-northwest direction…power outages are on the table. A very tight pressure gradient is now developing between the powerful departing storm system and an incoming high pressure system over the Northern Plains. High pressure will be in control of the weather this weekend resulting in cool, dry conditions, but winds will still be somewhat of a factor on Saturday.
One final note...it is time once again to turn the clocks back an hour...early Sunday morning.
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A powerful storm system will produce strong winds in the Mid-Atlantic region and periods of rain today which will be heavy at times…there can be a strong-to-severe thunderstorm as well. The rain tapers off to isolated showers by later this afternoon, but the strong winds will continue as the storm system pushes off to the northeast of here. Winds remain very strong on Friday (Halloween Day) with gusts to 45 mph to go along with sunshine and cool conditions. The weekend will be dry and cool with sunshine on both days and afternoon highs likely in the mid-to-upper 50’s.
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