A pre-frontal trough of low pressure will approach the region later today and then a strong cold front arrives in the overnight hours. Ahead of the trough and frontal system, there can be an occasional shower through the early-to-mid afternoon hours, but most of the time will be rain-free. The main action takes place late today and tonight as showers will become more likely and there can be a strong-to-severe thunderstorm as well. Skies will clear tomorrow morning and then a much cooler air mass will pour into the region tomorrow night and Sunday. In fact, the cool air mass arriving this weekend will be quite a bit below-normal for this time of year and the month of June could actually start off on quite a chilly note early Monday morning (June 1st) with temperatures bottoming out in the 40's across some of the northern and western suburbs.
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Enhanced moisture from the southeastern states is pushing into the area today and this tropical air mass will raise the chances for light rain or drizzle today and tonight and then showers and thunderstorms on Friday. Some of the storms late tomorrow and tomorrow evening can be on the strong-to-severe side. A strong cool front will arrive by early Saturday and a shower threat may linger early in the day, but much of the weekend should turn out to be dry and cool. In fact, the air mass arriving later this weekend will be quite cool for this time of year and the month of June could actually start off on quite a chilly note early Monday (June 1) with temperatures reaching the 40's in some of the northern and western suburbs.
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High pressure has pushed offshore and this positioning will open the door for tropical moisture to ride up along the eastern seaboard over the next 24 hours or so. Today’s weather will be somewhat similar to yesterday with early morning fog and clouds and afternoon highs not far from 80 degrees. Enhanced moisture from the southeastern states will arrive in the area towards morning and this air mass will raise the chances for occasional light rain or drizzle on Thursday and showers and thunderstorms on Friday. A strong cool front will arrive by early in the weekend and a shower threat is possible early Saturday, but much of the weekend could turn out to be dry and cool. In fact, the air mass arriving this weekend will be very cool for this time of year and the month of June could start off on quite a chilly note early Monday, June 1. A couple of other notes, the SpaceX rocket launch is still on for later today scheduled to lift off at 4:33 PM from Cape Canaveral in Florida although there will be scattered showers and storms to monitor. Finally, signs are pretty favorable for a tropical storm/hurricane threat later next week in the Gulf of Mexico.
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High pressure will push offshore today and this positioning will open the door for moisture to ride up along the eastern seaboard over the next few days. After patchy fog and clouds early today, sunshine will return and we'll climb towards the 80 degree mark for afternoon highs. After a rather similar type of day on Wednesday, moisture from the southeastern states will increase chances for showers and thunderstorms here on Thursday and that threat will continue into the early part of the weekend. By Sunday, high pressure will push back into the eastern US and we'll likely enjoy a nice day in the Mid-Atlantic region to close out the upcoming weekend.
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An upper-level low that was spinning over the Tennessee Valley during the past few days has finally kicked to the north and east and the result will be occasional rainfall here from later today into the beginning of the upcoming holiday weekend…maybe even a thunderstorm on Saturday. The low pressure system will push offshore late tomorrow and better weather is likely here on Sunday and Monday (Memorial Day). In fact, high pressure that builds into the southeastern part of Canada early next week will likely result in a nice stretch of weather here from the latter part of the weekend to middle of next week.
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High pressure over the southeastern part of Canada continues to influence our weather by producing an easterly flow of air and that’ll keep us on the cool side of normal for another day. An upper-level low pressure system that has been meandering over the Tennessee Valley during the past few days will finally get kicked out to the east by tomorrow – albeit in a weakened form – and this system will produce an enhanced risk of showers here from later tomorrow into Saturday. The holiday weekend will get off to that shaky start on Saturday with clouds and the threat of showers, but there should be improvement in the weather on Sunday and Monday (Memorial Day).
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High pressure over the southeastern part of Canada continues to influence our weather by producing an east-to-northeast low-level flow of air and that’ll keep us on the cool side for the next couple of days. In addition, the breeze will remain rather noticeable and there will be plenty of clouds around as a result of moisture pushing in from the western Atlantic Ocean. An upper-level low pressure system spinning over the Tennessee Valley will finally kick to the east late in the week bringing us an increased threat of showers from late Friday into Saturday. The weekend will start off kind of shaky with clouds and the threat of showers, but it should feature some improvement on Sunday and for the Memorial Day holiday on Monday.
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High pressure over the southeastern part of Canada remains a key player for the weather in the Mid-Atlantic region over the next few days as it will continue to produce an east-to-northeast flow of air, cooler-than-normal conditions, and plenty of clouds. An upper-level low pressure system will meander over the Tennessee Valley over the next couple of days and it should finally kick to the east late in the week bringing an increased threat of showers here by late Friday. Elsewhere, Tropical Storm Arthur is now moving out over the open waters of the Atlantic after hitting the Outer Banks on Monday with gusty winds and heavy rain bands.
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High pressure east of Hudson Bay in Canada remains a key player for the weather in the Mid-Atlantic region over the next few days as it will help to produce an east-to-northeast flow of air, cool conditions, and plenty of clouds. Meanwhile, an upper-low over the Midwest will meander over the Tennessee Valley over the next few days and it could finally kick to the east late in the week bringing the threat of showers to the region. Tropical Storm Arthur – the first tropical system of the 2020 Atlantic Basin season – will impact the Outer Banks of North Carolina today and then curve to the east and out-to-sea on Tuesday.
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High pressure over the western Atlantic will pump much warmer air into the Mid-Atlantic region today on southwesterly winds and we’ll experience our first 80+ degree day of the season. A cool front will arrive late tonight and there can be showers and thunderstorms ahead of it anytime from later today through the late evening hours. This front will stall nearby on Saturday and low pressure will drift along the boundary zone on Sunday producing more clouds in the region, a threat of showers, and overall cooler conditions. It’ll turn even cooler during the early part of next week and an overall damp weather pattern will continue through at least mid-week. Elsewhere, a tropical system is very likely to form this weekend over the southwestern Atlantic – the first of the 2020 Atlantic Basin tropical season - and it may very well contribute to the formation of a coastal storm in the Mid-Atlantic region during the middle of next week.
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