"This NASA satellite image taken at 1715 EDT (2215 GMT) on 5 September 2017 shows Hurricane Irma moving across the Atlantic Ocean. The most powerful Atlantic storm in a decade, has hit the Caribbean, with officials warning of its ""potentially catastrophic"" effects. The category five hurricane, the highest possible level, has sustained wind speeds reaching 300km-h (185mph). It first hit Antigua and Barbuda, before moving on to Saint Barthelemy and Saint Martin. It is then expected to move on towards Puerto Rico and the Dominican Republic. In the US, Florida's Key West area has ordered a mandatory evacuation. PHOTO: NASA-NOAA GOES Project BBCSnapshot hurricanirma hurricane storm category5 Caribbean evacuation weather: This NASA satellite image taken at 1715 EDT (2215 GMT) on 5 September 2017 shows Hurricane Irma moving across the Atlantic Ocean. The most powerful Atlantic storm in a decade, has hit the Caribbean, with officials warning of its ""potentially catastrophic"" effects. The category five hurricane, the highest possible level, has sustained wind speeds reaching 300km-h (185mph). It first hit Antigua and Barbuda, before moving on to Saint Barthelemy and Saint Martin. It is then expected to move on towards Puerto Rico and the Dominican Republic. In the US, Florida's Key West area has ordered a mandatory evacuation. PHOTO: NASA-NOAA GOES Project BBCSnapshot hurricanirma hurricane storm category5 Caribbean evacuation weather"
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