As we start the new work week, an upper-level ridge of high pressure builds across the southeastern states. As a result, low-level winds from a south-to-southwest direction will develop bringing warmer and more humid air into the region. The dry weather pattern will continue as well during the next few days with little to no rainfall expected in the Tennessee Valley.
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A warming trend begins here this weekend, and it’ll bring high temperatures to the middle and upper 80’s by the time we get to Tuesday and Wednesday of next week. There can be scattered showers and thunderstorms later today and then again during the second half of the upcoming weekend.
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The 2025 Atlantic Basin tropical season officially gets underway on Sunday, June 1st, and there are signs that the initial threat could come as early as ten days or so from now (i.e., June 8, 9, 10th time frame). A teleconnection index known as the Madden-Julian Oscillation or MJO appears to be foreshadowing the potential of tropical troubles in this time frame as it transitions into a “phase” that is generally quite favorable for activity in the Atlantic Basin. In addition, a second favorable sign may be the evolution of the upper-level pattern of highs and lows across North America which may feature strong ridging over southeastern Canada in about ten days or so. A strong ridge in this part of North America is often favorable this time of year for an “undercutting” tropical system in the southwestern Atlantic, Gulf of America, or Caribbean Sea where sea surface temperatures are generally warmer-than-normal.
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Warm and unsettled weather conditions for the next few days across the Tennessee Valley with the chance of showers and thunderstorms from time-to-time. It’ll turn drier and warm this weekend with mainly rain-free conditions on both days and highs at 80 or slightly above.
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After the passage of a slow-moving upper-level low, somewhat drier air has filtered into the region and the threat of showers will be reduced for today and Thursday. Another system will head towards the Great Lakes later in the week and it’ll throw a couple of fronts into the eastern states from Friday into the weekend. As a result, there will be a renewed threat of showers and thunderstorms across northern Alabama in the Friday, Saturday, Sunday time frame to go along with very warm conditions.
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A slow-moving upper-level low pressure system will finally push away from the area today, but it’ll be close enough to cause instability in the area and the chance for showers and thunderstorms. That threat of rain will last into tomorrow, but then high pressure takes control briefly on Thursday before another frontal system causes some unsettled conditions at week’s end and during the weekend.
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It has been unusually dry across much of the Mid-Atlantic region during the past several months, but prospects for getting back to normalcy are looking better and better in what has become an overall wetter weather pattern. In fact, today features an impressive plume of tropical moisture that is flowing right into the Mid-Atlantic region from the southwestern Atlantic Ocean and beneficial rain is falling in most areas. This widespread area of moisture is supported aloft by a vigorous and slow-moving upper-level trough of low pressure and, as such, the threat of showers and thunderstorms will continue through Thursday. After a brief lull in the action later this week, another low pressure system will head towards the Great Lakes and it’ll renew the threat of showers and thunderstorms in the Mid-Atlantic region from later Friday into Saturday. This active weather pattern looks likely to continue through the remainder of the month of May and there will be additional cold air outbreaks as well including potentially one for the Mid-Atlantic region during the Memorial Day weekend.
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A slow-moving upper-level low pressure system will finally push away from the area today, but it’ll be close enough to cause instability in the area and the chance for showers and thunderstorms. That threat of rain will last into tomorrow, but then high pressure takes control at mid-week and temperatures begin a climb into the middle 80’s for the second half of the week.
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It has been unusually dry across much of the eastern US during the past several months with a focus on the Florida Peninsula, but we have been chipping away at these conditions in recent weeks and there are likely to be additional beneficial rainfall events during the new couple of weeks. Rain is falling today throughout much of the Mid-Atlantic region and Northeast US – the second bout of rain this week – and rain is currently falling across portions of the northern Gulf region. This area of Gulf moisture will push east during the next few days and then take a turn to the north early next week and ride up slowly along the Atlantic seaboard. As a result, it appears there will be more beneficial rainfall in the Mid-Atlantic region and Northeast US from later Tuesday into Thursday further alleviating the dry conditions and additional rain threats exist later this month in an on-going active pattern.
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A slow-moving upper-level low pressure system will keep it quite unsettled around here for the next several days producing a daily chance of afternoon and evening thunderstorms. This system will push slowly across the Deep South through the weekend and then take a turn to the northeast early next week. Clouds will be plentiful in our area during this unsettled stretch putting a limit as to how warm it can get around here.
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