Residents of Caribbean islands hit by Hurricane Irma are bracing themselves for more upheaval as Hurricane Jose threatens to wreak further havoc on the already storm-ravaged region.

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On Friday, 21 people were killed and thousands displaced in the eastern Caribbean as Irma battered Cuba and the Bahamas. Now, near-category 5 Hurricane Jose is following a similar path, with the islands of St. Martin and St. Barthelemy expected to feel the full force of its 155mph winds over the weekend.

“I don’t think it takes a rocket scientist to know that further damage is imminent,” inspector Frankie Thomas of the Antigua and Barbuda police said.

#Jose has max sustained winds of 155 MPH & will come close to passing over Antigua and Barbuda - areas decimated by #Irma this week. #GOES16pic.twitter.com/hQfVXeZfaN — NASA SPoRT (@NASA_SPoRT) September 9, 2017

The US Hurricane Center has issued tropical storming warnings for Barbuda and Anguilla as well as Saba and St. Eustatius. It has also issued a tropical storm watch for the British Virgin Islands and Antigua.

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This is the first time that the Atlantic has had two hurricanes with winds of 150mph at the same time, according to meteorologist Philip Klotzbach of Colorado State University.

2 Atlantic hurricanes currently have winds of 150 mph (#Irma and #Jose) - 1st time on record Atlantic has had 2 150+ mph storms at same time pic.twitter.com/SZm1VMTCOs — Philip Klotzbach (@philklotzbach) September 8, 2017

The Caribbean has been ravaged by storms in recent days.

Speaking during a live TV broadcast Wednesday, Barbuda Prime Minister Gaston Browne said that around 90 percent the island has been destroyed by Irma.

"It's absolute devastation," he said. "The island is literally under water. In fact, I'm of the view that, as it stands now, Barbuda is barely habitable."

The storms come one week after Hurricane Harvey struck southeast Texas, leading to widespread flooding and deaths of more than 60 people.

US Senate has approved a $15.25 billion relief package for areas affected by #Hurricanes, tied to debt ceiling https://t.co/4mAod3cC5D#Irma — RT America (@RT_America) September 7, 2017

Meanwhile, category 1 Hurricane Katia is thought to be weakening over Mexico, a country still reeling from its most powerful earthquake in a century.

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Mexican national emergency services chief Luis Felipe Puente said this week that Katia has “worrying characteristics” because it is slow-moving and could dump rain on areas already flooded in recent weeks.