Latest Update on Hurricane Helene, Tropical Storm Isaac, Gulf Depression

Latest Update on Hurricane Helene, Tropical Storm Isaac, Gulf Depression

Latest Update on Hurricane Helene, Tropical Storm Isaac, Gulf Depression

Isaac was a hurricane Sunday night but downgraded when maximum sustained winds fell below 74 miles per hour.

Tropical Storm Isaac is expected to produce up to 4 inches of rain, with isolated amounts up to 6 inches, across Martinique, Dominica, and Guadeloupe, especially over elevated terrain.

Based on the current forecast, Isaac will move across the Lesser Antilles and into the eastern Caribbean Sea Thursday.

At 8 a.m., the center of the storm was 25 miles east of Dominica.

"Life-threatening flash flooding is possible with Isaac".

"Interests elsewhere in the southeastern and mid-Atlantic states should monitor the progress of Florence", said the NHC. Sustained winds slowed slightly to 125 miles per hour Tuesday afternoon, making it a Cat 3 storm.

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"There are no coastal watches or warnings in effect", said the NHC in its 11 a.m. September 12 update. The storm, which just days earlier had been a hurricane, weakened significantly as it approached the the Lesser Antilles and passed with little notice in the USVI, stirring some winds and bringing some hit-or-miss showers to the territory but little else.

The National Hurricane Center's Tropical Analysis and Forecast Branch measured wave heights up to 83 feet as Hurricane Florence makes its way to the east coast.

That's almost double the wave heights documented on Tuesday, when the NHC said satellites had observed "an expansive area of wave heights 12 feet or greater" circulating around Hurricane Florence and peak waves of 45 feet near its center.

There were two other systems in development Wednesday as well. Regardless of whether a system forms, they say heavy rain and gusty winds are likely along the Texas and Louisiana coast later this week.

While now classified as a hurricane, Helene will be downgraded to a storm by the time it reaches the shores of Northern Ireland.

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