In this satellite image provided by NOAA, Hurricane Florence churns through the Atlantic Ocean toward the U.S. East Coast, followed to the east first by Hurricane Isaac and then Hurricane Helene on September 11, 2018.

Hurricane Florence isn't the only storm threatening lives and property around the world.

Also spinning in the Atlantic are Tropical Storms Helene and Isaac and Subtropical Storm Joyce, while Tropical Depression Olivia and Super Typhoon Mangkhut are making waves in the Pacific.

In the Atlantic, while Joyce is far out to sea and poses no immediate threat to land, 70-mph Helene is forecast to roar near the Azores on Saturday and Sunday, the National Hurricane Center said.

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The Portuguese weather service said that wind gusts of up to 74 mph are possible by the weekend in the Azores, an island chain about 850 miles west of Portugal.

Tropical Storm Isaac, which passed between the Caribbean island nations of Dominica and Martinique late Wednesday and early Thursday, is now moving almost due west across the eastern Caribbean Sea.

The poorly organized, 45-mph storm is not expected to strengthen but should maintain its tropical storm strength for the next few days. It should dissipate by early next week, the hurricane center said.

Meteorologists are also keeping an eye on yet another tropical disturbance that's spinning in the western Gulf of Mexico. The hurricane center is giving the system a 50 percent chance of becoming a tropical depression or storm within the next five days.