Low pressure is going to intensify significantly this weekend near the Southeast US coastline, induced by a frontal boundary zone that slides into the region and energized by an upper-level trough that drops southeast across the Great Lakes. It appears increasingly likely that this strong coastal storm will then push far enough to the north to have an impact on the Carolinas, Mid-Atlantic, and Northeast US all the way from later Saturday into late Monday. The worst impact will be along coastal sections where rain will be heaviest, winds will be strongest, and the threat of coastal flooding/beach erosion will be high due to a prolonged period of onshore flow.
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Following the passage of a cold frontal system, the weather will become quite nice for the remainder of the week and upcoming weekend. High pressure edges into the area resulting in comfortable temperatures and plenty of sunshine in each of the next few days.
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Low pressure is going to intensify significantly this weekend near the Southeast US coastline, induced by a frontal boundary zone that slides into the region. It appears quite certain that this strong storm will then push far enough to the north to pound away at the coastal Carolinas with heavy rainfall and strong winds...another highly impactful event for the Outer Banks of North Carolina. After that, odds continue to increase that this weekend storm system will then push to the northern Mid-Atlantic coastline - act as a classic Nor’easter - and bring impactful rain and wind to coastal sections for an extended period of time. By early next week, the northward progress of this storm system will likely come to an end as strong high pressure builds across southeastern Canada (“confluence”) acting as a barrier in the atmosphere. As a result, the storm should turn east or it may even loop back around for awhile early next week near the Mid-Atlantic coastline before ultimately pushing out to the open waters of the western Atlantic.
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Low pressure is going to intensify significantly this weekend near the Southeast US coastline, induced by a frontal boundary zone that slides into the region. It appears quite certain that this strong storm will then push far enough to the north to pound away at the coastal Carolinas with heavy rainfall and strong winds. It is a little less certain if this strong storm can then extend far enough to the north along the eastern seaboard to produce heavy rainfall and strong winds in the Mid-Atlantic region, but that scenario is certainly on the table. Whether this system becomes a named tropical storm by NOAA’s National Hurricane Center is still too early to say; however, the effects could be much the same along coastal sections of the Carolinas and potentially to the Mid-Atlantic region...namely with heavy rainfall and strong winds...a kind of classic autumnal Nor’easter. Some of the key players involved include strong high-pressure ridging which will set up over southeastern Canada and a cold front that will slide to the southwestern Atlantic Ocean by the end of the week and help to act as a catalyst for the significant intensification of surface low pressure.
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Low pressure is likely to rapidly intensify this weekend over the southwestern Atlantic Ocean and it is a threat for heavy rainfall and strong winds along coastal sections of the Carolinas and potentially to the Mid-Atlantic/Northeast US. Whether this system becomes a named tropical storm is too early to say; however, the effects could be the same along parts of the eastern seaboard…namely with heavy rainfall and strong winds likely in the Saturday night to Monday time period. Some of the key players involved include strong high-pressure ridging which will set up over southeastern Canada and a cold front which will slide to the southwestern Atlantic Ocean later in the week and help to act as a catalyst for the intensification of low pressure.
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Unsettled weather begins the week here in the Tennessee Valley with occasional showers today and perhaps a thunderstorm or two mixed in. The combination of a strong ridge to our east and strong trough to our west will lead to the unsettled conditions here for the next day or so, but improvement comes for the second half of the week and it’ll turn slightly cooler as well.
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The weather remains somewhat unsettled today with the threat of PM showers and thunderstorms as an upper-level trough pushes through the Great Lakes region. The overall weather pattern will become more settled for the weekend and early part of next week with sunshine prevailing on each day and temperatures climbing into the low-to-mid 80’s for afternoon highs.
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The Atlantic Basin is quite active with three tropical systems of note as we head towards the end of September. There is a newly named Tropical Storm Humberto situated to the northeast of the Northern Leeward Islands, a likely-to-be named Imelda which is now located near the Dominican Republic, and a weakening Hurricane Gabrielle in the far eastern Atlantic Ocean. It is the likely-to-be named Imelda that may be of most concern at this point as it could threaten the Bahamas this weekend and potentially has a chance of impacting the Southeast US.
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The weather remains quite unsettled today with the threat of showers and thunderstorms as an upper-level trough drops into the Great Lakes. After a possible lingering shower on Friday, the overall weather pattern will become more settled by the weekend with sunshine prevailing on both Saturday and Sunday and temperatures climbing into the low-to-mid 80’s for afternoon highs.
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The Atlantic Basin is quite active as we head towards the end of September with three tropical systems currently on the playing field including a “major” Hurricane Gabrielle which is now racing off to the east-northeast and is no threat to the US. In fact, Hurricane Gabrielle could impact the Azores Islands and Portugal down the road in a weakened state after crossing over the cooler waters of the North Atlantic.
Meanwhile, the other two tropical systems pose more of a challenge in terms of forecasting their eventual paths and magnitudes. It appears quite likely that both systems will reach named tropical storm classification and potentially, both may climb to hurricane status. It also appears quite likely that these two systems will end up doing some sort of a dance around each other for awhile (“Fujiwhara effect”) and at least one may come uncomfortably close to the US east coast and we may not know the end of the story until we get ten or so days out from now.
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