"Gradual weakening is forecast over the next couple of days, and Helene is expected to become a tropical storm on Thursday". Isaac was moving at nearly 14mph with maximum sustained winds of 40mph as it tracked westward across the Caribbean Sea.
Computer models are in general agreement that Subtropical Storm Joyce will move northeasterly across the Atlantic towards Europe. The storm surge, major flooding, and damaging winds extending well beyond the center of the storm could cause major damage to coastal communities.
"My staff and I will continue to monitor Tropical Storm Isaac", said VITEMA Director Mona L. Barnes. A tropical storm watch was issued for Antigua, Montserrat, St. Kitts and Nevis, and Saba and St. Eustatius.
Bands of rain from Tropical Depression Isaac continue to drench the Lesser Antilles. Its winds were down to 45 miles per hour (75 kph).
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The outer bands of Hurricane Florence began battering the coast of North and South Carolina Thursday with strong winds and rain. More than 80,000 people were already without power as the storm approached, and more than 12,000 were in shelters.
Marco Petagna, a Met Office forecaster, said: "Storm Helene is still in the Atlantic but it could have an influence in Britain next week".
Officials have confirmed four deaths in North Carolina as a result of Hurricane Florence.
The weekend brings quiet conditions and highs near 80 both weekend days (Sunday being slightly warmer and a bit more humid than Saturday).
Florence could become a major test for the Federal Emergency Management Agency, which was heavily criticized as slow and unprepared past year for Hurricane Maria in Puerto Rico, where the death toll was put at almost 3,000.
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No other tropical systems or areas of possible activity are now being monitored.
People have been ordered to evacuate the Carolinas ahead of strong winds and heavy rain as the hurricane lands.
Sustained winds in this wave are still at 35 miles per hour and Isaac is moving westward in the Caribbean at 16 miles per hour.
"A broad area of low pressure is located over the central Gulf of Mexico".
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Authorities have advised people, however, to move to higher levels in their homes while they wait to be rescued. At least 150 people were waiting to be rescued in New Bern, N.C., officials tweeted Thursday evening.
Even if the system doesn't develop into a cyclone, it's expected to increase chances of rain in the area for Friday and Saturday.