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Atlantic Tropical Weather Outlook
2021-09-24 19:54:46| National Hurricane Center (Atlantic)
000 ABNT20 KNHC 241754 TWOAT Tropical Weather Outlook NWS National Hurricane Center Miami FL 200 PM EDT Fri Sep 24 2021 For the North Atlantic...Caribbean Sea and the Gulf of Mexico: The National Hurricane Center is issuing advisories on Hurricane Sam, located about 1300 miles east-southeast of the northern Leeward Islands. Surface observations and recent satellite wind data indicate that a surface low located a couple hundred miles north-northeast of Bermuda is gradually becoming better defined as it interacts with an upper-level trough. This system is producing winds of 40 to 45 mph north of the low center and additional development into a subtropical or tropical storm appears likely. Advisories could be initiated as soon as this afternoon as the system moves slowly toward the north-northwest over the next day or so. Additional information on this system, including gale warnings, can be found in High Seas Forecasts issued by the National Weather Service. * Formation chance through 48 hours...high...70 percent. * Formation chance through 5 days...high...70 percent. A gale-force, non-tropical low pressure system, the remnants of Odette, is located less than 600 miles west of the westernmost Azores. Showers and thunderstorms have mostly dissipated near the low, and strong upper-level winds are now expected to prevent further development as this system moves gradually southward until dissipation. Additional information on this system, including gale warnings, can be found in High Seas Forecasts issued by the National Weather Service. * Formation chance through 48 hours...low...near 0 percent. * Formation chance through 5 days...low...near 0 percent. A tropical wave is expected to move off the west coast of Africa by the end of this weekend. Thereafter, environmental conditions are forecast to be conducive for gradual development, and a tropical depression could form by the middle of next week while the system moves westward at 10 to 15 mph over the far eastern tropical Atlantic. * Formation chance through 48 hours...low...near 0 percent. * Formation chance through 5 days...medium...50 percent. && High Seas Forecasts issued by the National Weather Service can be found under AWIPS header NFDHSFAT1, WMO header FZNT01 KWBC, and online at ocean.weather.gov/shtml/NFDHSFAT1.php $$ Forecaster Papin
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