The US territory of Puerto Rico has declared a state of emergency as a tropical storn churing through the Carribean is set to hit the city. The National Hurricane Center (NHC) has issued hurricane watch and tropical storm warnings for Puerto Rico and the Dominican Republic.
Forecasters expect Tropical Storm Dorian to develop into a hurricane in the next 24 hours. President Donald Trump has approved an emergency declaration. The move authorises US federal agencies to provide assistance and co-ordinate disaster relief. In Puerto Rico, a territory still recovering from the devastation wrought by Hurricane Maria in 2017, there are fears of power cuts and damage from strong winds.