On the forecast track, disturbance is expected to move near or over the southern Cabo Verde Islands as a tropical storm later today and tonight.Maximum sustained winds are near 35 mph (55 kph) with higher gusts.
Maximum sustained winds have decreased to near 115 mph (185 kph) with higher gusts. The tropical storm is expected to move generally westward to west-northwestward at a slightly slower forward speed for the next several days. Those strong thunderstorms stretched from the Mid-Atlantic to New England.On Sept. 18, Florence is becoming an increasingly elongated low pressure area while it generates heavy rain over parts of the Mid-Atlantic and into southern New England today.
cycloneoi.com : cyclone océan indien - copyright ©2020 all right reserved - contact@cycloneoi.com Maximum sustained winds remain near 90 mph (150 kph) with higher gusts. These swells are likely to cause life-threatening surf and rip current conditions.At 5 a.m. EDT (0900 UTC), the center of Tropical Depression Florence was located near latitude 33.8 degrees north and longitude 81.4 degrees west. In Florence’s case, National Hurricane Center forecasters expect the storm to pass over water with temperatures well above that threshold. 635 WTNT41 KNHC 160848 TCDAT1 Tropical Depression Florence Discussion Number 68 NWS National Hurricane Center Miami FL AL062018 500 AM EDT Sun Sep 16 2018 Surface observations indicate that there are no longer any sustained tropical-storm-force winds as the center of Florence has moved farther inland over South Carolina. Satellite data revealed that there is still relatively little deep convection near the estimated center of circulation. Surrounding the eye were thick rings of powerful storms with cloud tops as cold as or colder than minus 70F (minus 56.6C).NASA research has found that cloud top temperatures as cold as or colder than the 70F/56.6C threshold have the capability to generate heavy rainfall.Infrared data also shows that the sea surface temperatures ahead of Florence are at least 84.2 degrees Fahrenheit (29 degrees Celsius). VIIRS infrared imagery showed that the eye of Florence appeared ragged.Coldest cloud top temperatures of strongest thunderstorms were in the ragged eyewall, the area of thunderstorms surrounding the open eye. Malgré un démarrage précoce, la saison des ouragans 2018 se fait remarquer pour son calme relatif.
MODIS found coldest cloud tops had temperatures near minus 70 degrees Fahrenheit (minus 56.6 degrees Celsius). Florence is a category 3 hurricane on the Saffir-Simpson Hurricane Wind Scale. A slow motion over eastern South Carolina is forecast Friday night through Saturday night.The map below shows sea surface temperatures on September 11, 2018. For an understanding of how large the system is 400 miles is the distance from Baltimore, Maryland to Boston, Massachusetts.This is a life-threatening situation. MODIS found coldest cloud tops (yellow) around the center were as cold as or colder than minus 80 degrees Fahrenheit (minus 62.2 Celsius) southwest of the bulk of the storm.The center was surrounded, mostly northeast, by slightly less powerful thunderstorms (red) with cloud top temperatures near minus 70 degrees Fahrenheit (minus 56.6 degrees Celsius).
This rainfall will produce catastrophic flash flooding and prolonged significant river flooding.
Hurricane-force winds extend outward up to 70 miles (110 km) from the center and tropical-storm-force winds extend outward up to 175 miles (280 km).Strengthening is forecast through tonight. On the forecast track, the center of Florence will move over the southwestern Atlantic Ocean between Bermuda and the Bahamas today, and approach the coast of North Carolina or South Carolina in the hurricane warning area on Thursday and Friday.NHC forecasters caution that the path may change and residents along the southeastern U.S. coast should stay vigilant.One of CloudSat’s most recent acquisitions—a view of the inner structure of NASA’s Aqua satellite provided an infrared look at powerful Hurricane Florence early on Sept. 11 that indicated it was likely undergoing eyewall replacement.Intense hurricanes can and often undergo an eyewall replacement cycle.
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