Hurricane Helene ‘THREAT TO LIFE’ warning - United Kingdom to be hit on MONDAY

Tropical Storm Isaac is expected to be at hurricane strength when it reaches the Lesser Antilles on Thursday

Meanwhile in the Pacific, Tropical Storm Olivia was close to Hawaii, where tropical storm warnings and watches are in effect, according to the Pacific Hurricane Center.

The centre of Isaac passed between Martinique and Dominica with maximum sustained winds of about 45 miles per hour.

The National Hurricane Center in Miami on Wednesday night issued advisories on Hurricane Florence, located over the western Atlantic Ocean, on Hurricane Helene, located over the eastern Atlantic Ocean, on Tropical Storm Isaac, located a few hundred miles east of the Lesser Antilles, and on newly formed Subtropical Storm Joyce, located several hundred miles west-southwest of the Azores. "Gradual weakening is forecast over the next couple of days, and Helene is expected to become a tropical storm on Thursday".

All of the islands under watch were significantly impacted by Hurricanes Maria or Irma last September, with some of them still trying to rebuild.

Winds of 40 mph extend outward up to 115 miles (185 km) from the center of the tropical cyclone.

"The deepest water will occur along the immediate coast in areas of onshore winds, where the surge will be accompanied by large and destructive waves". This rainfall may cause risky flash flooding, N.H.C. said.

Helene is now in the Atlantic Ocean following behind Hurricane Florence, which was expected to hit the eastern coast of the United States late Thursday or early Friday.

Hurricane Florence has weakened somewhat early Thursday as its outer bands approach the North Carolina coast, but weather officials cautioned that the storm will still bring life-threatening conditions.

Baker said the rain will bring damaging flash flooding to all areas of the Wilmington region, not just low-lying areas that are particularly vulnerable. The upper level winds are light, meaning the storm is likely to maintain intensity, or even strengthen a bit before making landfall.

A Tropical Storm Watch is in effect for.

A small-craft warning means in this case that surface winds greater than or equal to 25 knots and seas equal to or greater than 3 metres (10ft) are already affecting or expected to affect the marine area. It should dissipate by early next week, the hurricane center said.

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