US coast evacuated as historic hurricane bears down

After cutting a deadly swath across the Caribbean and leaving at least 264 dead in Haiti, the Category Four storm was to crash up against the southeastern US early on September 7.

Over the course of the day it will scour its way up a 600-mile (965-kilometre) strip of coast from Boca Raton in Florida to just north of Charleston, South Carolina, driving seawater and heavy rain inland.

Only a handful of hurricanes of this strength have ever made landfall in Florida, and none since 1898 has threatened to scythe its way north along low-lying, densely populated coast into Georgia and beyond.

Evacuation orders were issued for areas covering at least three million residents and major cities like Jacksonville, Florida and Savannah, Georgia lay in the path of the terrible storm.

Daytona Beach imposed a curfew that was to last until dawn, and President Barack Obama declared emergencies in Florida, Georgia and South Carolina, promising federal aid.

As the first bouts of heavy rain and powerful gusts arrived at seafront resorts presaging the storm beyond, more than 90,000 homes and businesses in Florida had lost power.

Matthew has already battered Haiti, Jamaica, Cuba, the Dominican Republic and the Bahamas and US officials are taking no chances, warning that loss of life is a virtual certainty.

"This storm is a monster," declared Florida's Governor Rick Scott. "I want everybody to survive this. We can rebuild homes. We can rebuild businesses... We can't rebuild a life."

Matthew was churning over the ocean 50 miles off Grand Bahama Island at 11:00 pm on October 6 (local time) and heading towards Florida and South Carolina at 13 miles per hour.

By 2:00 am On October 7 it is expected to be off Port St Lucie, threatening Florida's beaches and ports with sustained winds of up to 130 miles-per-hour and gusts of up to 160.

"And when you get the wind you will get immediate flooding, strong rip current, beach erosion. The risk of tornados," Scott warned.

"Think about this: 11 feet (3.3 metres) of possible storm surge. And on top of that, waves. So if you are close, you could have the storm surge and waves over your roof."

Highways were jammed with people streaming inland to escape the storm, forecast to be strong enough to snap trees and blow away roofs or entire houses.

As US gas stations ran dry, frantic shoppers flocked to stores for batteries, transistor radios, bread, canned goods, bottled water, ice and pet food.