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

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Florence peaked at a terrifying Category 4 with top winds of 140 mph (225 kph) over warm ocean water before making landfall as a Category 1 hurricane at 7:15 a.m.at Wrightsville Beach, a few miles (kilometres) east of Wilmington and not far from the SC line.

Joyce could become a tropical storm within the next day or so. Tropical storm conditions are possible within the tropical storm watch area, also beginning late this morning.

The storm is moving at 17 miles per hour to the west and has 60 miles per hour winds. A Tropical Storm Watch means that tropical storm conditions are possible within the watch area.

"Hurricane Joyce is also in the Atlantic so we need to see how those two systems are going to move around each other because that could have an impact".

As 400-mile-wide Florence pounded away at the coast with torrential downpours and surging seas, rescue crews used boats to reach scores of people besieged by rising waters along a river. It is moving northwest at 15 miles per hour, according to the NHC's update at 11 a.m. Sept 12. But in the 9 a.m. advisory, the center said this would "be the last forecast/advisory issued by the National Hurricane Center on this system".

More news: Hurricane Florence to cause massive flooding in US

"Helene is expected to transition to an extratropical cyclone as it approaches Ireland and the United Kingdom in a couple of days".

According to the NHC 11 p.m. Tuesday update, Tropical Storm Isaac's center is "outrunning" the deep convection by about a degree due to strengthening westerly shear.

On Sept. 13, Helene is weakening while moving northward over the eastern Atlantic and interests in the Azores should monitor the progress of the storm. As Hurricane Florence traveled across the ocean, its winds basically pile up water that is higher than the ordinary level of the sea.

Met Office meteorologist Alan Deakin said: "Hurricane Helene may influence things in combination with an area of low pressure over the coming days".

The new satellite imageries taken by NOAA uncovered Tropical Storm Isaac, a former hurricane, as it's moving towards the Caribbean, and Hurricane Helene swirling right off the coast of Africa as it's expected to fly further over the ocean before taking a turn towards Europe.

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