The next few days will remain quite comfortable across the Mid-Atlantic region with moderate warmth and humidity levels for this late stage of the month of July...and no extreme heat is in sight. An upper-level trough of low pressure will re-establish itself over the northeastern states during the early part of next week and this could contribute to another strong-to-severe thunderstorm outbreak on Tuesday afternoon/evening in the Mid-Atlantic region and heavy rainfall is a possibility as well.
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A cold front pushed off the eastern seaboard late yesterday and its passage ushered in a refreshing air mass to the Mid-Atlantic region. Temperatures and humidity levels will remain in the comfortable zone for the next few days and there will be plenty of sunshine as well. Humidity begins to build up early next week and the chance of showers and thunderstorms will increase as the next frontal system heads in this direction from the Great Lakes.
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A cold front will slowly work its way to the eastern seaboard today and clouds will give way to clearing skies by later tonight and a refreshing air mass will move into the Mid-Atlantic region. As the front pushes towards the coast, there can be additional showers and thunderstorms later today, but likely confined to areas just to the south and east of the metro region. Temperatures and humidity levels will be quite comfortable from later tonight into the weekend across the Mid-Atlantic region following the passage of the cold frontal system.
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There is high risk of severe weather later today in the Mid-Atlantic region as several ingredients come together to enhance upward motion and destabilize the atmosphere. There were some showers around earlier today, but the late afternoon and evening hours will present the greatest risk for the severe weather. The primary hazards on the table include damaging wind gusts and heavy rainfall, but isolated tornadoes cannot be ruled out. Showers and thunderstorms can linger on Wednesday; especially, along and to the south and east of the I-95 corridor as the cold front pushes towards the eastern seaboard. Refreshing air will follow the frontal passage on Wednesday night and great weather is destined for the Mid-Atlantic region on Thursday and Friday.
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Severe weather affected the Mid-Atlantic on Saturday, and another high risk is on the way for this afternoon and evening as a cold front pushes towards the region. Not everyone will get hit by the strong-to-severe storms, but ingredients are coming together for what looks like multiple rounds of showers and thunderstorms...some of the storms can be severe and some of the rain will be heavy…watch out for localized flash flooding. Showers and thunderstorms can linger into Wednesday; especially, along and to the south and east of the I-95 corridor. A refreshing air mass will arrive on Wednesday night and the weather looks great for Thursday and Friday.
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Severe weather affected the Mid-Atlantic region on Saturday, and another threat is on the way for later tomorrow. Not everyone will get hit by the strong storms, but ingredients are coming together for what looks like multiple rounds of showers and thunderstorms...some of the storms can be severe and some of the rain can be heavy. Showers and thunderstorms can linger into mid-week; especially across the southern part of the Mid-Atlantic and then a refreshing air mass will arrive on Wednesday night and Thursday. Meanwhile, there is an intensifying tropical system over the northern Gulf, and it is likely to reach named tropical storm status (would be Bertha) in the near term.
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High pressure builds into the region today and the new work week will start off on a nice note with plenty of sunshine and moderately warm conditions. The next cold front approaches later tomorrow and it can bring us multiple rounds of showers and thunderstorms...some of the storms can be strong-to-severe and some of the rain can be heavy. There can be lingering showers into mid-week, but a refreshing air mass is to follow into the Mid-Atlantic region for much of the second half of the week.
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Following the passage of a weak cold front and combined with some more wildfire smoke in the area which can dim the skies at times, temperatures today will get knocked down a bit from recent days. The wildfire smoke had its origins in southern Canada and the low-level wind flow has pushed it into the Mid-Atlantic region. An active weather day is setting up for Saturday as a frontal system and an impressive wave in the upper atmosphere will likely produce numerous showers and thunderstorms during the first half of the weekend. Some of the storms on Saturday can be strong-to-severe and some of the rainfall can be heavy. The front should clear the area on Sunday with improving weather conditions likely going into the early part of next week.
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There is the threat of severe weather and heavy rainfall on Saturday in the Mid-Atlantic region as the overall weather pattern will result in high instability across the area. The pattern will feature an intense ridge of high pressure centered over the Rocky Mountain States with northwesterly flow over the Great Lakes/Northeast US. Often, this kind of flow results in “lines” or “complexes” of thunderstorms dropping to the south and east from the Great Lakes to the northeastern states and that is on the table for the first half of the weekend. The potential exists for damaging winds, isolated tornadoes, heavy rain and localized flash flooding as precipitable water amounts in the atmosphere will climb to quite high levels. Meanwhile, wildfire smoke from Canada will continue to be an issue as we slide into the end of the week, and it will dim the skies at times through Friday.
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Today will be another hot one in the Mid-Atlantic region with afternoon highs well up in the 90’s in many areas and there will be areas of smoke from still-active Canadian wildfires to our north and west. In fact, the wildfire smoke could stick around into tomorrow given the current directional flow of low-level air and it will certainly dim the skies at times. There can be a shower or thunderstorm later today, tonight, and on Friday, and the weekend will get off to an active start with a renewed chances of showers and thunderstorms on Saturday.
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