A large area of rain and thunderstorms has developed over the south-central Gulf of Mexico in association with Tropical Depression 8. This seems to be a sign of strengthening and the system will become Tropical Storm Hermine later Wednesday. It's northward speed of movement will increase later Wednesday with a turn toward the northeast expected Wednesday night into Thursday. Landfall as a tropical storm is expected along the Big Bend of Florida Thursday night. From there, it will track near the Carolina coast later on Friday. Flooding rainfall, coastal flooding and locally damaging winds will be the main threat from this system over Florida, particularly across western and northern portions of the state. Some coastal flooding and beach erosion is a threat for portions of the western and northwest Florida coast. A few tornadoes are also likely Thursday and Thursday night from central Florida into far southern Georgia. Heavy rain and high winds may also impact the southeastern U.S. coast Friday into Friday night. Meanwhile, heavy rain will continue over western Cuba Wednesday with a threat of deadly flash flooding and mudslides. Looking down the road, latest global computer models take the system closer to the northeastern U.S. coast, and in fact, bend the track back toward the coast late in the weekend or early next week.
Tropical Depression Eight is slowly drifting to the northeast off the coast of North Carolina. Showers and thunderstorms are concentrated near and to the east of the low level center, but these are well east of the Outer Banks of North Carolina. The depression will continue to drift to the northeast then pick up more speed to the northeast later Wednesday. During that time it may become stronger and could become a tropical storm on Wednesday afternoon as the cyclone moves over the warmer waters of the Gulf Stream. The effects of Tropical Depression Eight on the Outer Banks will be minimal
Hurricane Gaston is on a northeast track across the open waters of the Atlantic and is a category 3 hurricane. Even through it is not a direct threat to land, it will cause rough surf across Bermuda through the next day or so. Gaston will maintain hurricane status over the next 24-36 hours, then it will encounter cooler waters and wind shear, which will start a weakening cycle. Gaston will bring the chance of gusty winds and heavy rain to the Azores on Friday evening into Saturday.
Low pressure within a strong tropical wave near the Cabo Verde Islands is tracking to the west and latest global models show this system impacting the Leeward Islands late this weekend with numerous showers and perhaps gusty winds.
Updated by AccuWeather Meteorologist Mike Doll
530 ABNT20 KNHC 311118 TWOAT TROPICAL WEATHER OUTLOOK NWS NATIONAL HURRICANE CENTER MIAMI FL 800 AM EDT WED AUG 31 2016 For the North Atlantic...Caribbean Sea and the Gulf of Mexico: The National Hurricane Center is issuing advisories on Hurricane Gaston, located well east of Bermuda, on Tropical Depression Eight, located east of North Carolina, and on Tropical Depression Nine, located over the south-central Gulf of Mexico. A broad area of low pressure, associated with a tropical wave, is located over the far eastern Atlantic near the Cabo Verde Islands. This wave is in an environment of very dry air, which should prevent any significant development for a few days. Some development is possible over the weekend when the wave nears the Lesser Antilles. * Formation chance through 48 hours...low...near 0 percent * Formation chance through 5 days...medium...40 percent $$ Forecaster Blake