High pressure edged into the Mid-Atlantic region late yesterday and it will be in control of the weather for today’s holiday providing us with some sunshine, breezy, cool and dry conditions. A (dry) cold front will pass through the area tomorrow night and usher in some chilly air for the upcoming weekend with temperatures holding at below-normal levels on Saturday and Sunday. It turns even colder for the first half of next week following the passage of another cold frontal system. One final note, there is likely to be a low pressure system just off the Mid-Atlantic coastline late in the upcoming weekend and it there is an outside chance that it spreads some precipitation into the I-95 corridor by Sunday night.
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After our soaking rain event, high pressure will edge into the region later today and take control of the weather in time for Thanksgiving Day. As such, skies should clear some during the day and we’ll be setting up for a cool, breezy and dry Turkey Day holiday. A (dry) cold front should pass through the area late Friday night paving the way for chilly weekend weather.
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The first widespread soaking rain event in several weeks is on the way for the Mid-Atlantic region and many spots can receive 1.50-2.50 inches by early tomorrow. The rain is likely to develop here during the mid-to-late afternoon hours and become heaviest and steadiest during the night. Strong low pressure will push to the eastern Great Lakes later today and the contrast with strong high pressure over northern New England will create a tight pressure gradient across the northeastern states. As a result, winds will become an important factor during this soaking rain event with gusts between 30 and 40 mph on the table from late today through tonight. High pressure builds back into the area at mid-week and the Thanksgiving Day holiday is looking cool, breezy and dry in the Mid-Atlantic region.
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After back-to-back-to-back La Nina (colder-than-normal water) winters, El Nino (warmer-than-normal water) has formed in the tropical Pacific Ocean and it will play an important role in the upcoming winter season across the nation as discussed in the Arcfield Weather 2023-2024 “Winter Outlook”. Two aspects of El Nino are important when it comes to its potential impact on winter weather patterns in the US and they include both its magnitude and location. Evidence continues to mount suggesting this El Nino event will not rival some of the strongest episodes in recent history such as in 2015-2016, 1997-1998 or 1982-1983. Instead, and as outlined in the “Winter Outlook”, it appears this El Nino will be one of moderate strength and will tend to weaken as we progress through the winter season. In terms of the location with respect to the greatest sea surface temperature anomalies in the equatorial Pacific, the thought was that an “eastern-based” focus would shift to more of a “central-based” and recent developments suggest this transition may already be getting underway.
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The big weather story of the week in the Mid-Atlantic region will be the soaking rain event that takes place from later tomorrow into early Wednesday as strong low pressure pushes into the Great Lakes region. It has been very dry in recent weeks, but this system should produce an inch or more of rain throughout the area by early Wednesday morning. It appeared last week that there would be an influx of unseasonably cold air into the Mid-Atlantic region on the back side of this storm, but that no longer appears to be the case. Instead, Turkey Day should be dry and cool with only slightly below-normal temperatures for this time of year. The weather becomes unsettled again at week’s end and for the upcoming weekend and it looks like it will be on the chilly side.
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It turned noticeably milder in the Mid-Atlantic region on Thursday as high pressure shifted offshore and the mild conditions will continue today ahead of an incoming frontal system. The front will set off some shower activity tonight, but – as has been the case in recent weeks – this will not be a significant rain event. Colder air pushes into the Mid-Atlantic region this weekend on the heels of the frontal passage. Looking ahead, a strong storm system will head to the Midwest/Great Lakes during the first half of next week and likely result in rain and wind here from Tuesday into Wednesday - and this time the rainfall may be significant.
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A widespread and impressively cold air mass will cross the nation next week and reach the eastern seaboard in time for Thanksgiving Day (Thursday). A strong storm system will develop out ahead of the incoming cold air mass and it will impact a large part of the nation with rain, snow and wind on the busy travel days of Tuesday and Wednesday.
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It turns noticeably milder in the Mid-Atlantic region today as high pressure pushes off the east coast and a low-level southwesterly flow of air develops in our area. After a mainly clear night, clouds will increase on Friday ahead of an incoming cold frontal system and showers are likely here on Friday night as the front passes through the NYC metro region. As has been the case in recent weeks, this upcoming rain event on Friday night does not look impressive so don’t expect much relief in the dry soil conditions. Chilly air will return this weekend on the heels of the cold frontal passage and high pressure will take control of the weather into early next week.
Looking ahead, a strong storm system will head to the Midwest/Great Lakes during the first half of next week and likely result in rain and wind here from Tuesday into Wednesday - and this time the rainfall may be significant. A widespread and impressively cold air mass will cross the nation next week and reach us here in the Mid-Atlantic region just in time for Thanksgiving Day.
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The overall weather pattern across the nation is becoming more and more active compared to recent days and it is likely to result in a strong storm system by the middle of next week that impacts a wide area from the Great Lakes and Midwest to the Mid-Atlantic and Northeast US. In terms of temperatures, the overall pattern will flip across the nation from today’s widespread warmer-than-normal conditions to below-normal for the last ten days or so of the month of November. In fact, a widespread cold air mass with its origins in northern Canada will sweep across the nation next week from northwest-to-southeast…just in time for the Thanksgiving Day holiday. This is very likely not going to be the last cold blast for the eastern half of the nation as the colder pattern that sets up next week will likely take us to the beginning of December.
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It stays chilly and dry today in the Mid-Atlantic region with high pressure remaining in control of the weather. A cold front will arrive in the area at the end of the work week and it turns milder ahead out of it on Thursday afternoon. That next front will bring us shower activity by Friday night and then another chilly air mass will follow for much of the upcoming weekend.
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