485 ABNT20 KNHC 082318 TWOAT Tropical Weather Outlook NWS National Hurricane Center Miami FL 800 PM EDT Sat Sep 8 2018 For the North Atlantic...Caribbean Sea and the Gulf of Mexico: The National Hurricane Center is issuing advisories on Tropical Storm Florence, located over the central Atlantic Ocean, on Tropical Storm Helene, located roughly about 150 miles southeast of the Cabo Verde Islands, and on newly upgraded Tropical Storm Isaac, located over the eastern Atlantic. Shower and thunderstorm activity has diminished in association with a trough of low pressure over the western Atlantic near Bermuda. Significant development of this system is unlikely due to increasingly strong upper-level winds over the next few days. * Formation chance through 48 hours...low...10 percent. * Formation chance through 5 days...low...10 percent. A non-tropical area of low pressure is forecast to form in the northeastern Atlantic Ocean several hundred miles west-southwest of the Azores in a few days. Some slow tropical or subtropical development is possible by the middle of next week while the low moves eastward. * Formation chance through 48 hours...low...near 0 percent. * Formation chance through 5 days...low...30 percent. && Public Advisories on Tropical Storm Isaac are issued under WMO header WTNT34 KNHC and under AWIPS header MIATCPAT4. Forecast/Advisories on Tropical Storm Isaac are issued under WMO header WTNT24 KNHC and under AWIPS header MIATCMAT4. $$ Forecaster Landsea