Hurricane Florence: Mass evacuation from ‘storm of a lifetime’

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US East Coast residents are running out of time to flee before Hurricane Florence hits the region as soon as Thursday evening, officials warn.

The storm has been downgraded to category three with 125mph (205km/h) winds, but officials say it is still “extremely dangerous”.

Up to 1.7 million people have been ordered to evacuate across South Carolina, North Carolina and Virginia.

Four South Carolina motorways have been diverted one-way to speed the exodus.

On Wednesday, Georgia declared a state of emergency, following the Carolinas, Virginia, Maryland and Washington DC.

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A National Weather Service forecaster said: “This will likely be the storm of a lifetime for portions of the Carolina coast.

“And that’s saying a lot given the impacts we’ve seen from Hurricanes Diana, Hugo, Fran, Bonnie, Floyd and Matthew.

“I can’t emphasise enough the potential for unbelievable damage from wind, storm surge and inland flooding with this storm.”

Media captionHurricane Florence threatens US East Coast

Jeff Byard, of the Federal Emergency Management Agency, said: “This is going to be a Mike Tyson punch to the Carolina coast.”

North Carolina Governor Roy Cooper warned that “disaster is at the doorstep”, and “tens of thousands” of buildings may be flooded.

Waves 83ft (25m) tall were recorded at sea on Wednesday morning.

But while many coastal residents have complied with mandatory evacuation orders, others are boarding up their homes and vowing to ride out the storm.

A vacationer from Ohio tells Getty News he plans to ride out the storm from his rental condo at North Carolina's Outer Banks
A holidaymaker from Ohio says he plans to ride out the storm from his rental home in North Carolina’s Outer Banks
a sign tells the hurricane to "go away"

In other developments:

  • Florence could wreak more than $170bn (£130bn) of havoc and damage nearly 759,000 homes and businesses, says analytics firm CoreLogic
  • North Carolina farms are moving livestock to safety. In 1999, Hurricane Floyd left hundreds of thousands of dead hogs and chickens floating in floodwaters in the state
  • Nearly 1,000 prisoners in South Carolina will not be moved from their cells, despite a mandatory evacuation order in the area. “In the past, it’s been safer to leave them there,” said a state department of corrections spokesman
  • There are fears for wild horse herds in North Carolina’s Outer Banks, but experts say these equines can sense bad weather coming and head to higher ground

In a video posted to his Twitter account on Wednesday, US President Donald Trump warned residents in Florence’s bullseye to heed official warnings.

“Get out of its way, don’t play games with it,” said Mr Trump. “It’s a big one, maybe as big as they’ve seen, and tremendous amounts of water.”

“Bad things can happen when you are talking about a storm this size. It’s called Mother Nature. You never know, but we know. We love you all, we want you safe.”

What makes Florence so dangerous?

Forecasters say the storm poses such a threat because it is expected to slow down and hover for nearly two days over the Carolina coast, before dipping south towards Georgia.

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It is forecast to bring 20-40in (50-100cm) of rain and life-threatening storm surges of up to 13ft.

Hurricane force winds will emanate up to 70 miles from the centre of the storm, say meteorologists.Presentational white space

National Hurricane Center Director Ken Graham warned that waterways up to 40 miles inland may flood.

Mr Graham said the Pamlico and Neuse rivers in North Carolina will see their flows “reversed” as storm surges push water back inland.

He added that half of fatalities during hurricanes are caused by storm surges, and another quarter of deaths are due to inland rains and flooding.

The barrier islands of the Carolina coastline are only several meters-wide in place
The barrier islands of the Carolina coastline could be prone to flooding

Is global warming to blame?

The relationship between climate change and hurricanes is a complex one.

Warmer seas power hurricanes. So as the temperature of ocean water goes up, we might expect the intensity of hurricanes to increase in future.

A hotter atmosphere can also hold more water, so this should allow hurricanes to dump more water on affected areas.

But there are so many factors that contribute to these rare events, it has been difficult to tease out clear trends from the data.

Chuck Ledford (L), watches Looney-Tunes with his daughter Misty as they evacuate in Wilmington, North Carolina
Chuck Ledford (L), watches Looney-Tunes with his daughter Misty as they evacuate in Wilmington, North Carolina
Navy ships that cannot go to sea are secured to the Norfolk, Virginia, port with heavy moorings
Navy ships that are under repair and cannot go to sea are secured to the Norfolk, Virginia, port with heavy moorings