A very comfortable air mass will stick around for another day in the Mid-Atlantic region with pleasant temperatures and low humidity levels; however, there are big changes on the way. A warm front will work its way through the region during the next 24 hours or so bringing with it some showers and thunderstorms and some of the rain can be heavy at times later tonight into early Thursday. Following the passage of the warm front, the hottest weather so far this season will push into the area for Friday and Saturday with highs of 90+ degrees on the table for the first half of the weekend. Another cold front will arrive later Sunday - likely with afternoon/evening showers and thunderstorms – and its passage will usher in cooler air once again for the eastern states by the early part of next week.
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There are still cold air outbreaks destined to push into the US from Canada as we progress through the second half of May and even accumulating snow for the Rockies, but that doesn’t mean we can’t have a threat of a hurricane. In fact, there are signs that the atmosphere will become supportive of a tropical storm or hurricane in the Gulf of Mexico region later this month or early in June in what is likely to be an active season for the Atlantic Basin.
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A strong cold front passed through the region late yesterday and its passage has ushered in a much different air mass with noticeably less humidity and very comfortable temperatures. There will be plenty of sunshine in the wake of the frontal passage both today and on Wednesday to go along with the pleasant conditions. Another disturbance could throw some shower activity our way on Wednesday night and Thursday and then the hottest weather so far is destined to arrive for Friday and Saturday. Another cold front approaches late Sunday and it should bring more showers and thunderstorms to the Mid-Atlantic region with cooler air to follow for early next week.
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There is a severe thunderstorm threat in the Mid-Atlantic region for this afternoon and evening as a combination of ingredients will come together including the arrival of a strong cold front, high humidity and a vigorous disturbance in the upper atmosphere. The threat of severe weather includes the possibility of damaging wind gusts, hail and even isolated tornadoes from mid-day into the evening. Following the passage of the strong cold front, a much different air mass will push into the Mid-Atlantic for Tuesday and Wednesday with noticeably lower humidity and comfortable temperatures.
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A strong cold front will sweep across the Mid-Atlantic region later today and its arrival could result in strong-to-severe thunderstorm activity. Ingredients are coming together for this potential PM severe weather including high humidity levels, a vigorous wave aloft, and the strong surface cold front. Following the passage of the front, it’ll turn cooler late tonight and the next couple of days will be quite comfortable with lower humidity and plenty of sunshine on both Tuesday and Wednesday.
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Moisture associated with an ocean storm that has retrograded back to the east coast will push northward today into the Mid-Atlantic region and it sticks around through the upcoming weekend. Showers can occur at just about any time today, tonight, tomorrow and on Sunday, but much of the time will be rain-free. In addition to the shower threat, a thunderstorm or two can be mixed into the picture during each of the next few days and – for the first time this spring season – humidity will become a noticeable factor. An incoming cold frontal system will extend the unsettled weather conditions around here on Sunday night and Monday and this timing could be a negative for the viewability of the total lunar eclipse on Sunday night. Better weather returns to the Mid-Atlantic region for Tuesday and Wednesday following the early week passage of the cold front.
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High pressure stationed to our northeast will control the weather around here for another day, but the pattern becomes more unsettled by later tonight and tomorrow. Moisture associated with the same low pressure system that dampened our last weekend will ride up along the eastern seaboard over the next 24 hours or so resulting in unsettled weather conditions here right through the upcoming weekend. Not only can a shower take place at just about anytime on Friday, Saturday and Sunday, but a thunderstorm or two can be mixed in as well and humidity will become a noticeable factor for the first time this season. A frontal system will bring the chance for additional showers on Sunday night and Monday - perhaps diminishing our chances for viewing a total lunar eclipse.
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High pressure stationed to our northeast will remain in control of the weather around here for the next couple of days, but it will also act to push an oceanic low pressure system back to the Southeast US coastline later in the week. This is the same system that dampened much of the past weekend in the Mid-Atlantic region and its moisture field will move northward along the eastern seaboard at the end of the week. As a result, the chance of showers will increase here on Thursday night and Friday and - for the first time this season - humidity will become a noticeable factor. The threat for scattered showers will continue on Saturday and Sunday as well and temperatures will stay on the warm side with daily highs in the 70’s.
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Overall weather conditions improved markedly on Monday in the Mid-Atlantic region and it should stay quite nice through at least the day on Thursday with plenty of sunshine each day and comfortable temperatures. High pressure stationed to our northeast will remain in control for the next few days, but it will also act to push an oceanic low pressure system back to the east coast later in the week. This is the same storm system that dampened much of the weekend in the Mid-Atlantic as it interacts with a northern stream wave of energy, its moisture could push northward along the eastern seaboard by the early part of the weekend. The result is likely to be an increasing threat of showers by the time we get to Friday night and Saturday although temperatures should remain on the warm side.
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After a miserable last few days of chilly, windy and damp weather, conditions will improve markedly today, and the bulk of the week looks to be pretty decent. High pressure to our north will produce some sunshine here today and it’ll turn milder with afternoon highs in the 60’s. Stalled-out low pressure over the western Atlantic Ocean will be forced back to the west later this week and its moisture field could impact our weather by the early part of the upcoming weekend.
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