Arctic air continues to impact the eastern states here at mid-week and today will feature colder-than-normal temperatures around here along with a continued stiff westerly wind making it feel even colder than the actual air temperature. A cold front passes through the area overnight and it’ll usher in a chilly air mass for the remainder of the week with temperatures remaining below-normal Thursday, Friday, and Saturday.
In terms of space weather, a very active sunspot region unleashed three separate solar flares on Sunday, Monday, and Tuesday and each one resulted in a coronal mass ejection (CME) headed towards Earth (full story). The combination of the first two CMEs impacted the Earth last night with auroras seen around here in the Mid-Atlantic region and in unusually far south locations such as Texas, Alabama, and New Mexico. The third CME that was unleashed early Tuesday morning - the strongest solar flare of the year - could result in more northern lights on Wednesday night so be on the lookout for that if skies cooperate (and they should).
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The Arctic blast that reached the eastern US on Monday is having an impact this morning all the way down to southern Florida with numerous low temperature records across the southeastern states and Tennessee Valley region. In addition to the unusual cold in our area, winds will be quite strong today gusting to 40 mph or so which will make it feel even colder than the actual air temperatures. Temperatures do relax some at mid-week, but a chilly air mass moves in later this week following the passage of another cold frontal system.
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An Arctic air mass that originated near the North Pole has infiltrated the eastern states today and it will have an impact all the way down to southern Florida by Tuesday morning. In fact, temperatures on Tuesday morning are likely to bottom out in the 30’s across the central part of the Sunshine State and the 40’s in southern Florida. At the same time, many suburban locations along the Mid-Atlantic’s I-95 corridor region from DC-to-Philly-to-NYC will feature the first hard freeze of the season with overnight lows well down in the 20’s in many spots. There is accumulating snow to go along with this early week Arctic blast with favored areas including the Great Lakes, interior sections of the Mid-Atlantic and Northeast US, and the central Appalachians where a vigorous upper-level low is helping to destabilize the atmosphere in a big way.
While there will likely continue to be colder-than-normal temperatures across the northeastern states during the second half of the week, this winter-like pattern does not look like it’ll continue through November. In fact, there are signs for warmer-than-normal conditions to cover much of the nation from next week into the following week and it may include one or more severe weather outbreaks as well. Looking farther down the road, numerous signals point to a sustained colder-than-normal period to start the winter season as we transition into the month of December.
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An Arctic cold front passed through the region last night and the coldest air of the season pushes into the eastern US for the next couple of days. Temperatures will peak this morning in the low-to-mid 50’s for highs and then drop to the upper 20’s later tonight for overnight lows….the first hard freeze of the season in many spots. It remains unseasonably cold on Tuesday and a tight pressure gradient will result in stiff winds around here making it feel even colder than the actual air temperature. While temperatures relax at mid-week, another cold front will usher in a chilly air mass for the latter part of the week with below-normal conditions remaining on Thursday, Friday, and Saturday.
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A cold front crosses the region later tonight and it will bring some shower activity to the DC-to-Philly-to-NYC corridor. Temperatures behind the cold frontal passage will not drop with highs on both days likely in the 60’s with some sun and Saturday and clouds on Sunday with the chance for rain. 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 by later Monday with a vigorous low pressure system nearby in the upper part of the atmosphere. This setup could lead to some snow shower activity around here late Monday and accumulating snow is likely just downstream from the Great Lakes (e.g., western PA, western NY) and also in the higher elevations of the western Mid-Atlantic (e.g., western MD, western VA, West Virginia). Temperatures relax by mid-week, but there will be a shot of chilly air by late next week.
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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., western NY, western PA, West Virginia).
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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 50 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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