The new work week begins with an active tropical scene in the Atlantic Basin including Tropical Storm Sally which is slowly moving to the west-to-to-northwest over the northern Gulf of Mexico. This system has a good chance to intensify into a hurricane over the next 6-12 hours as it churns slowly towards the northern Gulf coastal region. Sally is likely to reach southeastern Louisiana or southern Mississippi in the overnight hours and it’ll remain quite a slow moving system. As a consequence, there is the potential for substantial rainfall amounts in the northern Gulf region from southeastern Louisiana to the western part of Florida’s Panhandle – perhaps on the order of one to two feet. After landfall, this system will head inland and push to the north and east bringing heavy rainfall to the Tennessee Valley in the late Wednesday to early Friday time period. Stay tuned.
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The very active 2020 Atlantic Basin tropical season continues as we reach the middle part of September with multiple systems on the scene extending from the western Gulf of Mexico to the eastern Atlantic Ocean. One of these systems is currently categorized as a hurricane, “Paulette”, and it is likely to impact Bermuda in the near-term. There are two tropical storms in the mix including “Rene” in the central part of the tropical Atlantic and “Sally” now over the eastern Gulf of Mexico. Tropical Storm Sally is of great concern to the northern Gulf coast region as it could slow down near and after landfall - potentially resulting in substantial rainfall amounts of more than a foot by the middle of the week. The remnants of Tropical Storm Sally are likely to push inland at mid-week bringing significant rains to the south-central states and then into the Carolinas.
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It’ll stay hot around here for one more day with high pressure to our east and low pressure to our west. Temperatures are likely to reach the lower 90’s for afternoon highs, but will begin a slow downward trend later this weekend. In fact, highs may be confined to the lower 80’s by the time we get to the middle of next week. There is enough moisture in the region for a continued chance of showers and thunderstorms with a focus on the afternoon and evening hours. Elsewhere, the tropics remain very active in the Atlantic Basin with multiple waves to monitor in coming days.
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If you try to pinpoint the climatological peak in the Atlantic Basin tropical season to one particular day in terms of the number of active storms, it actually comes down to today, September 10th. Well, here we are and right on queue, there are numerous waves to monitor in the Atlantic Basin from the eastern Gulf of Mexico to just off the west coast of Africa. A few of these tropical waves are relatively close to the US and will have an impact in the near-term while another few systems are potential concerns for the second half of September. Meanwhile, the Pacific Ocean remains unusually quiet in terms of tropical activity in what should also be an active time of year. In fact, the overall tropical activity in the world’s largest ocean has been way below-normal in 2020 and this has contributed to a below-normal tropical season so far for the Northern Hemisphere as a whole.
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High pressure ridging has intensified in the eastern states and is resulting in hot weather around here that will continue for another few days. There is enough moisture in the region for a continued chance of showers and thunderstorms with a focus on the afternoon and evening hours. Elsewhere, the tropics remain quite active with multiple waves to monitor in coming days now over the eastern Atlantic.
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The weather pattern has undergone a change across the country with the Rocky Mountain States shifting from summer conditions to cold and accumulating snows from Wyoming to New Mexico. High pressure ridging has intensified in the eastern states and is resulting in hot weather around here that will continue another couple of days. More moisture may push into the area by the end of the week and this is likely to bring us a renewed threat for showers and thunderstorms.
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The weather pattern is undergoing a change across the country with the Rocky Mountain States shifting from summer conditions to accumulating snows in many areas from Wyoming to New Mexico. High pressure ridging will intensify in the eastern states and it’ll result in warmer conditions around here with highs near 90 degrees over the next few days. More moisture may push into the area by Thursday and this is likely to bring us a renewed threat for showers and thunderstorms.
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It’ll be hot again in the Tennessee Valley as we close out the work week with highs near the 90 degree mark, but a frontal passage will usher in cooler air for the weekend. In fact, temperatures late tonight and again late tomorrow night will fall to comfortable levels in the low-to-middle 60’s. High pressure will push east of here early next week and this will produce a broad southwesterly flow of air into the region resulting in warmer and more humid conditions with highs getting back to near the 90 degree mark.
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A stretch of nice weather begins on Friday in the Mid-Atlantic region and continues through Monday, but there is a threat of severe weather before we get there. A strong cold front is crossing the Great Lakes region today and headed towards the Mid-Atlantic and its approach will enhance the chance for showers and thunderstorms in the 2-9 PM time period. Any storm that forms later today or early tonight can become severe with potentially damaging wind gusts and heavy rainfall…perhaps even a few isolated tornadoes. The good news is that all of this activity clears out by early tomorrow setting the stage for a stretch of nice weather from tomorrow through the Labor Day holiday.
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An upper-level ridge of high pressure continues to strengthen over the Southeast US and it will keep us quite warm and humid as we head towards the weekend. The threat for rain will diminish some today as the ridging intensifies overhead. It’ll also stay quite warm with high temperatures in the lower 90’s across the region and those hot conditions will continue on Friday as well. A cool front should be able to push through the region tomorrow with scattered showers and thunderstorms in the Tennessee Valley. Following the late week frontal passage, it’ll turn a bit cooler for the upcoming weekend.
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