High pressure continues to remain in control of the weather in the Mid-Atlantic region and we’ll have a couple more nice days featuring plenty of sunshine and warm conditions. Low pressure to our west early this weekend may come close enough to give us some shower activity late Friday night and on Saturday and then high pressure takes back control on Sunday.
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High pressure builds into the Mid-Atlantic region today and will provide us with dry and increasing warm conditions through the end of the work week. Temperatures will likely peak right near the 70 degree mark this afternoon, not far from 80 degrees on Thursday, and then the lower 80’s on Friday. Low pressure to our west this weekend may be close enough to give us an increasing chance of showers on Saturday and then another chance of showers likely comes on Monday with the arrival of a frontal system.
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Low pressure will ride from NW-to-SE today along a frontal boundary zone bringing us a slight chance of showers; primarily, a threat during the mid-day hours. It’ll be cooler than yesterday as well as a low-level east-to-northeast flow of air develops on the north side of the storm track. High pressure will build back into the region on Wednesday and the second half of the work week is looking quite nice with dry and increasingly warm conditions. The weather likely becomes more unsettled this weekend with a returning chance of showers and thunderstorms.
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While it won’t be a widespread or long-lasting event, a fast-moving low pressure system will pack a little bit of a punch on Tuesday and it could produce some decent rainfall for a limited portion of the Mid-Atlantic region. The best chance for the locally heavy rainfall will likely extend from the southwestern part of Pennsylvania to the DC metro region and then eastward to the Delmarva Peninsula and southeastern Virginia. In addition to the production of some rainfall, this system will bring cooler conditions to the Mid-Atlantic region on Tuesday with and east-to-northeast low-level flow of air likely to develop on the north side of the southeastward-moving storm system.
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A frontal system passed through the region last night and it stalls out today across central Virginia with dry air building in behind it across our area. Low pressure will ride along the frontal boundary zone later tonight and Tuesday bringing us the chance of showers and cooler conditions. High pressure takes over at mid-week and the second half of the week is looking dry and warm.
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An upper-level low pressure system continues to push slowly away from the coast and high pressure will build into the region for the weekend. As a result, today will be a bit on the cool side of normal with a slight chance for a PM shower and Saturday is likely to be the nicest day in quite awhile across the Mid-Atlantic region. The weather for Sunday and Monday should feature comfortably warm conditions, but a couple of disturbances can bring scattered showers to the region on both days, maybe even a thunderstorm or two. Showers and thunderstorms are even more likely on Tuesday with the approach of a frontal system and it should turn cooler again by the middle of next week.
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Temperatures will remain below-normal for the next couple of days in the Mid-Atlantic region as an upper-level low slowly pulls away from the Northeast US coastline. Cold air in the upper atmosphere will continue to keep it somewhat unstable around here; consequently, there can be mid-day or afternoon scattered showers both today and on Friday. The weekend is shaping up to be quite nice with quieter and milder conditions as high pressure to the north takes control of the weather in the Mid-Atlantic region.
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An unusually cool air mass remains entrenched in the Mid-Atlantic region and an upper-level low spinning overhead will keep it quite unsettled here at mid-week. With cold air aloft, any daytime heating will quickly result in destabilization of the atmosphere leading to clouds, scattered rain showers and perhaps even a rumble of thunder. The air is cold enough that some can experience small hail or graupel mixed in with the rain later today and tonight. The weather gets quieter and milder at the end of the week and the weekend is shaping up quite nicely.
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An unusually cool air mass for early May has engulfed much of the northeastern quadrant of the nation and it’ll stick around for a few more days. The Great Lakes, Midwest, Mid-Atlantic and Northeast US will be stuck with well below-normal temperatures through much of the remainder of the week with a deep upper-level low pressure system spinning around overhead. With cold air aloft, any daytime heating early in the day will quickly result in destabilization of the atmosphere leading to clouds and scattered rain showers. The air is cold enough that some higher-elevation interior locations of the Mid-Atlantic and Northeast US can even experience ice pellets (graupel) and/or snowflakes mixed in with the rain during the next couple of days. The weather gets quieter and milder at the end of the week.
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After back-to-back soaking rain events, the Mid-Atlantic region will experience quite cool and unsettled conditions for much of this week with a daily chance of showers. An upper-level low will spin around the northeastern states in coming days and cold air aloft will result in instability in the atmosphere leading to the daily chance of patchy clouds and showers. The air mass will feature well below-normal temperatures for the early part of May and indeed can be cold enough for a few ice pellets (graupel) to mix in at times across some of the coldest, higher elevation northern suburbs. Winds will also be quite noticeable during each of the next few days with gusts to 30 mph possible.
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