The work week will end on a cool note, but it turns milder this weekend ahead of the next cold front that crosses the area from Sunday night into Monday. Winds will increase on Sunday ahead of the cold front and temperatures should climb into the middle 70’s to close out the weekend. Showers may pop at at the end of the day on Sunday with the arrival of the cold front and are quite likely on Sunday night. In fact, there can be a few downpours on Sunday night with this cold frontal passage and perhaps a thunderstorm or two mixed in. High pressure will build back into the Mid-Atlantic region behind the front on Monday and another cold front approaches late Tuesday.
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A cold front passed through the region late yesterday and ushered in a chilly air mass to the Mid-Atlantic. Temperatures will struggle to climb above the lower 60’s for afternoon highs and there will be a noticeable breeze from a north-to-northwest direction. High pressure will be in control of the weather for right into the weekend and the next chance of showers likely holds off until late Sunday or Sunday night with the arrival of the next cold frontal system.
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A cold front approaches the area later today and it should pass through on the dry side later tonight. This frontal passage will usher in a chilly air mass as high pressure edges into the region on Thursday and temperatures will struggle to climb much past the 60-degree mark for afternoon highs. Winds will be quite noticeable on both sides of the cold front from later today through much of tomorrow night. High pressure pushes away from the region on Friday and a warm front could result in more cloud cover as we begin the weekend. The threat of showers is likely to return late in the weekend with the approach of another cold frontal system.
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A coastal storm that has been impacting much of the Atlantic seaboard during the past few days will finally weaken and exit off to the east later today. Weather conditions will be slow to improve in the Mid-Atlantic region, but the mid-week should feature some sunshine in the area ahead of the next cold frontal system. That cold front will pass through the region on Wednesday night and it’ll usher in a chilly air mass with temperatures on Thursday likely to struggle to climb much past the 60-degree mark for afternoon highs despite plenty of sunshine…there will be a noticeable northwest wind as well.
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Low pressure off the east coast will continue to influence our weather today with cloudy skies, breezy and cool conditions, and occasional showers. This coastal system will weaken and move out to sea on Tuesday and improvement in the weather will begin to take place in the Mid-Atlantic region. High pressure builds in by the middle of the week and generates comfortably cool and dry conditions for much of the second half of the week.
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Lots of players are on the field as we begin the weekend with one upper-level low over the Great Lakes that is dropping slowly to the southeast and a second wave of energy in the southern stream that is helping to spin up a surface low pressure system off the southeast US coast. In addition, there is a strong high-pressure system to our north that continues to shift slowly offshore as we begin the weekend. The combination of the high to the north and low to the south is already producing an onshore flow of air in the Mid-Atlantic region and this will persist for the next few days potentially leading to significant coastal flooding/beach erosion from Long Island-to-New Jersey-to-the Delmarva Peninsula. While there can be some heavy showers and strong wind gusts across inland areas during the next few days, rainfall amounts will be much more limited with the worst impact from this developing storm system confined to coastal sections.
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Low pressure is going to intensify significantly this weekend near the Southeast US coastline, induced by a frontal boundary zone that slides into the region, and energized by an upper-level trough that drops southeast across the Great Lakes. It appears likely that this strong coastal storm will then push far enough to the north to have an impact on the Mid-Atlantic region all the way from later Saturday into late Monday. The worst impact will be along coastal sections where rain will be heaviest, winds will be strongest, and the threat of coastal flooding/beach erosion will be high due to a prolonged period of onshore flow.
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Low pressure is going to intensify significantly this weekend near the Southeast US coastline, induced by a frontal boundary zone that slides into the region and energized by an upper-level trough that drops southeast across the Great Lakes. It appears increasingly likely that this strong coastal storm will then push far enough to the north to have an impact on the Carolinas, Mid-Atlantic, and Northeast US all the way from later Saturday into late Monday. The worst impact will be along coastal sections where rain will be heaviest, winds will be strongest, and the threat of coastal flooding/beach erosion will be high due to a prolonged period of onshore flow.
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Canadian high pressure will take control of the weather today leading to the coolest day so far this fall season and the possibility of the first frost late tonight in many suburban locations. Radiational cooling conditions will be quite good in the overnight hours as high pressure parks overhead and generates clear skies, light winds, and overnight temperatures down in the 30’s in some areas.
Looking ahead to the weekend, strong low pressure system will form off the Southeast US coastline and produce heavy rainfall and strong winds for the coastal Carolinas including - once again - the Outer Banks of North Carolina. This strong coastal storm system is then likely to push northward to or just off the Mid-Atlantic coastline by later in the weekend...likely resulting in an impactful rain and wind event for the Mid-Atlantic region from late Saturday night-to-Monday.
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Low pressure is going to intensify significantly this weekend near the Southeast US coastline, induced by a frontal boundary zone that slides into the region. It appears quite certain that this strong storm will then push far enough to the north to pound away at the coastal Carolinas with heavy rainfall and strong winds...another highly impactful event for the Outer Banks of North Carolina. After that, odds continue to increase that this weekend storm system will then push to the northern Mid-Atlantic coastline - act as a classic Nor’easter - and bring impactful rain and wind to coastal sections for an extended period of time. By early next week, the northward progress of this storm system will likely come to an end as strong high pressure builds across southeastern Canada (“confluence”) acting as a barrier in the atmosphere. As a result, the storm should turn east or it may even loop back around for awhile early next week near the Mid-Atlantic coastline before ultimately pushing out to the open waters of the western Atlantic.
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