The US National Storm Center (NHC) predicted on Saturday that Hurricane Franklin would intensify into a major storm by late on Sunday.
According to a Miami-based forecaster, the hurricane is roughly 615 miles (990 km) south of Bermuda and has maximum sustained winds of 85 mph (140 kph).
It predicted a shift to the north-northwest on Sunday, followed by a northward motion early in the week.
According to the advisory, the hurricane's swells will likely start to hit Bermuda by Sunday night and will likely start to risk people's lives along parts of the US east coast by late this weekend.
