Vigorous upper-level low pressure has pushed into the eastern US and with it some of the chilliest air so far this season for the Tennessee Valley. High temperatures today will be to the lower 50’s which is well below-normal for this time of year. Temperatures during the next couple of late nights will drop to near 30 degrees and patchy frost is possible. Noticeably milder conditions will return to northern Alabama by the upcoming weekend after high pressure pushes to a position off the eastern seaboard.
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Vigorous upper-level low pressure will push into the eastern states over the next 24 hours and this will bring some of the chilliest air so far this season to the Tennessee Valley. In fact, the core of the coldest air in this outbreak relative-to-normal will be across the Tennessee Valley and Deep South. High temperatures will be in the 60’s today, but then only the 50’s on Tuesday and Wednesday which is well below-normal for this time of year. Low temperatures will drop well down into the 30’s during the next couple of nights and this will raise the chances for late night frost in many locations.
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High pressure will settle in near the east coast for the next couple of days and temperatures here will trend up from the mid 70’s this afternoon to near 80 degrees on both weekend days. A deepening upper-level trough of low pressure will drop southeastward early next week and the result here will be quite a cool down with some of the coolest weather so far this season on Tuesday and Wednesday.
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There have been a few chilly air masses that have reached the Mid-Atlantic/Northeast US in recent weeks, but the one destined to arrive here for next Tuesday and Wednesday will likely be the chilliest so far this season. A deep upper-level trough of low pressure will tend to rotate around and intensify during the next few days over the Great Lakes and southern part of Canada and then this system will spin its way into the eastern US by the middle of next week. With lots of instability in the atmosphere and the cold air mass pushing over the still relatively warm of the Great Lakes, snow showers are likely just downstream for the first time this season.
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A cool front passed through the region and it turns cooler today with afternoon highs likely in the low-to-mid 70’s. In addition to the cooler conditions, winds will be quite gusty out of the northwest up to 25 mph or so.
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A deepening upper-level trough of low pressure will pivot into the Great lakes and Ohio Valley later today and a surface cold front will approach us from the west. As a result, south-to-southwest winds will increase today and increasing amounts of moisture will generate instability as the frontal system approaches the area. Showers and thunderstorms will form later today and by this evening, some of the storms can be on the strong-to-severe side.
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High pressure will be in control for another day, but changes are coming to the Tennessee Valley at mid-week as a strong upper-level trough of low pressure drops southeastward from central Canada. A strong cool front will be lined up with the upper-level trough and the result here will the chance for showers and thunderstorms. The front should clear the area early on Thursday and nice weather will return by the end of the work week.
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High pressure will be in control for the first half of the week and temperatures will be comfortably warm across the Tennessee Valley. Later in the week, a strong cold front will head this way likely accompanied by showers and thunderstorms and cooler air will follow by week’s end.
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A cool front will pass through the region today without any precipitation; however, it will have an impact on temperatures as it’ll usher in another cool air mass to the Tennessee Valley. After highs near 80 degrees this afternoon, temperatures will likely be confined to the upper 60’s on Saturday and the coolest readings so far are possible by early Sunday morning. It’ll be comfortable on Sunday to close out the weekend and there should be a warm and quiet start to the new week on Monday and Tuesday.
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Low pressure finally pushed away from the Mid-Atlantic coastline late yesterday and the result here will be a warming trend that will feature temperatures climbing to near 80 degrees later this afternoon and lower 80’s on Friday. A cool front slides across the region later tomorrow and its passage will usher in a cooler air mass for the upcoming weekend.
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