TEHRAN, Young Journalists Club (YJC) - Residents scrambled to flee en masse as the menacing Category 4 storm packing winds of 140 miles (220 kilometers) per hour bore down on the East Coast of the United States.
"This is one of the worst storms to hit the East Coast in many years," President Donald Trump warned on Twitter. "Please be prepared, be careful and be SAFE!"
South Carolina Governor Henry McMaster ordered as many as one million residents of the state's eastern coast to leave their homes ahead of the storm's possible arrival on Thursday. Schools in 26 of the state's 46 counties were to close from Tuesday.
The governor of neighboring North Carolina ordered an evacuation of the Outer Banks, barrier islands that are a popular tourist destination, and parts of coastal Dare County, while a state of emergency was declared in Virginia.
"This is a very dangerous hurricane," McMaster said, adding that the evacuation order for coastal counties was "mandatory, not voluntary."
"We do not want to risk one South Carolina life in this hurricane," the governor told reporters. "We're liable to have a whole lot of flooding."
Hours later Trump approved emergency declarations for both coastal states, a standard move allowing the release of federal funds and equipment to aid in protection and recovery efforts.
The US president said he had spoken with governors of threatened states, adding that the "federal government stands by, ready to assist 24/7."
Hurricane Florence has the potential to bring catastrophic flooding to areas of the eastern United States already soaked by heavy rain and it may be the strongest storm to hit the region in decades.
A Category 4 on the five-level Saffir-Simpson hurricane wind scale, Florence was 465 miles south-southeast of Bermuda and the center of the hurricane was forecast to pass between Bermuda and the Bahamas on Tuesday and Wednesday, the National Hurricane Center (NHC) said in its 11:00 pm (0300 GMT) advisory.
Forecasters expected some strengthening in the next 36 hours, as Florence marched west-northwest at around 13 miles per hour.
At a hardware store in downtown Charleston, South Carolina, store manager John Johnson said the rush on batteries, flashlights, plastic tarps and sandbags began Friday.
"From eight o'clock 'til two we were slammed," said Johnson, who sold scores of bags of sand over the weekend, saving just a few to barricade the store's own doors.