Hurricane Dorian is expected to strengthen into a dangerous Category 3 storm on Friday as it heads towards the US mainland.
It's expected to hit Florida even harder than previously thought, with winds of at least 178 km/h.
Florida Governor Ron DeSantis expanded a state of emergency to prepare for Hurricane Dorian, which is set to make landfall on the Atlantic coast early Monday as a dangerous Category 4 storm.
US President Donald Trump described the storm as "an absolute monster" in a video posted on Twitter.
He also cancelled a visit to Poland in order to monitor relief measures and announced that Vice President Mike Pence would go in his place.
Trump says Iran should wave the white flag of surrender
Pentagon chief says ceasefire with Iran is not over
US and Iran launch new attacks as they wrestle for control of Strait
Israeli strikes kill two Palestinians in Gaza, medics say
Blast at fireworks factory in China's Hunan kills 26, Xi calls for probe
