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Atlantic Tropical Weather Outlook
2021-08-26 11:02:24| National Hurricane Center (Atlantic)
000 ABNT20 KNHC 260902 TWOAT Special Tropical Weather Outlook NWS National Hurricane Center Miami FL 505 AM EDT Thu Aug 26 2021 For the North Atlantic...Caribbean Sea and the Gulf of Mexico: Special tropical weather outlook issued to update the discussion of the system south of Jamaica. Updated: Shower and thunderstorm activity continues to become better organized in association with a trough of low pressure located less than 200 miles south of Jamaica. Environmental conditions remain conducive for development, and a tropical depression or storm is expected to form later today or tomorrow. This system is forecast to move northwestward over the northwestern Caribbean Sea near the Cayman Islands tonight, near Cuba and the Yucatan Peninsula of Mexico on Friday, and into the Gulf of Mexico this weekend. Given the recent developmental trends, Tropical Storm Warnings for the Cayman Islands and Tropical Storm Watches for western Cuba could be required later today. Regardless of development, locally heavy rainfall and flooding will be possible over portions of Jamaica and the Cayman Islands today and tonight, and will likely spread across Cuba and the Yucatan Peninsula on Friday. In addition, this system could bring dangerous impacts from storm surge, wind, and heavy rainfall to portions of the coasts of Louisiana, Texas, and the Mexican state of Tamaulipas late this weekend and early next week. However, uncertainty remains large since the system has yet to form. Interests in these areas should closely monitor the progress of this system and ensure they have their hurricane plan in place. An Air Force Reserve reconnaissance aircraft is scheduled to investigate the system later today, if necessary. 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 broad trough of low pressure is producing disorganized showers and thunderstorms over the central tropical Atlantic about 650 miles east-southeast of Bermuda. Environmental conditions are forecast to be generally conducive for development, and a tropical depression is likely to form late this week or this weekend while the system moves slowly northeastward over the central Atlantic. * Formation chance through 48 hours...medium...40 percent. * Formation chance through 5 days...high...80 percent. A tropical wave over the far eastern tropical Atlantic located several hundred miles west-southwest of the Cabo Verde Islands is producing disorganized showers and thunderstorms. Some development of this system is possible over the next several days while it moves west-northwestward at 10 to 15 mph over the eastern tropical Atlantic. Upper-level winds are forecast to become less conducive for development by early next week. * Formation chance through 48 hours...low...20 percent. * Formation chance through 5 days...low...30 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/Beven
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