Damage is also feared across Virginia, Maryland, and Washington, D.C.
"Life-threatening, catastrophic flash flooding and significant river flooding is likely over portions of the Carolinas and Mid-Atlantic states from late this week into early next week", the center stated in a 5 a.m. update that said the storm was approximately 580 miles southeast of Wilmington, North Carolina.
Forecasters said Florence could become an extremely unsafe major hurricane sometime Monday and remain that way for days.
The massive storm is threatening the East Coast of the U.S. with an expected landfall early Friday. Forecasters warn that millions could be affected by the hurricane.
It is very important to point out that changes in the forecast track are still possible and even small changes in the storm could greatly change the expected conditions in your area.
According to CNN, the area covered by Florence's tropical storm-force winds (which are one step below hurricane-force) stretches about 280 miles, which is greater than the distance between Boston and Philadelphia.
If the hurricane continues in a southwesterly direction, the Georgia coastline and inland counties will experience the outer bands of the storm, meteorologists said.
He says the time to flee Hurricane Florence is now. This storm is a slow-moving mammoth and will linger for days on the coast, heavily affecting not only North and SC but also Georgia and parts of Virginia before moving further inland, causing devastation to entire states throughout the weekend. "That's the primary driver of the evacuations that are underway by the states of North Carolina, South Carolina, and Virginia right now". "This is going to be a Mike Tyson punch to the Carolina coast". It was packing winds of 215kmh and enough moisture to dump 30cm of rain on the region.
While one stated: 'It takes a massive hurricane and a national weather services's poorly designed graphics to unite the smartasses of America.
"He was thinking of coming here until this morning, and now he asked me if I wanted to come up there", he said.
"We could get some rain and gusty winds".
The National Hurricane Center said despite the decrease in winds, the size of the wind field has increased.
But a computer simulation known as the European model predicts some places could get 45 inches.