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Atlantic Tropical Weather Outlook
2021-09-24 21:58:12| National Hurricane Center (Atlantic)
529 ABNT20 KNHC 241958 TWOAT Special Tropical Weather Outlook...Retransmitted NWS National Hurricane Center Miami FL 400 PM EDT Fri Sep 24 2021 For the North Atlantic...Caribbean Sea and the Gulf of Mexico: Special tropical weather outlook issued for the system located to the north-northeast of Bermuda. The National Hurricane Center is issuing advisories on Hurricane Sam, located about 1300 miles east-southeast of the northern Leeward Islands. Updated: Recent visible satellite imagery indicates that a well-defined center has formed with a surface low located a couple hundred miles north-northeast of Bermuda interacting with an upper-level trough. In addition, the low is producing gale-force winds on the north side of its circulation. Additional development into a subtropical storm is now expected, and advisories will likely be initiated this afternoon as the system moves slowly toward the north-northwest. 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...90 percent. * Formation chance through 5 days...high...90 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. * 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/Landsea
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