Severe gales are expected in the United Kingdom, moving from the south west to the north west.
Irish people are being warned to expect some "disturbed" weather as Hurricane Helene heads for the country.
Florence is unlike Hurricane Hugo, a category 4 storm that struck Charleston in 1989.
Hurricane and tropical storm watches have been posted for several Caribbean islands as a weakening Tropical Storm Isaac continues its trek toward the Leeward and Windward Islands.
Florence's new eye appears to be stable enough that the storm is unlikely to undergo another eye-wall-replacement cycle; this means that Florence can continue to build in power, which could spell trouble for the USA states that lie in the storm's path, Stewart said in the report. This rainfall may cause risky flash flooding, N.H.C. said.
Current paths show Florence making landfall near Wilmington, N.C., before tracking inland. Damaging winds, floods, high surf and storm surge are still possible. It is still a Category 4 storm with winds of 130 miles per hour.
Tropical Storm Watches were also discontinued for St. Maarten, St. Martin, Saba and Eustatius.
At least 800 flights have been cancelled or grounded due to the storm's expected landfall, CNN reported. Mandatory evacuations have been issued for much of the SC and North Carolina coastline.
"There is still a 6 to 10 percent chance of tropical storm force wind in (Marion and Alachua counties), but I think that is aggressive", said Nate McGinnis, a National Weather Service meteorologist in Jacksonville". Regardless of whether a system forms, they say heavy rain and gusty winds are likely along the Texas and Louisiana coast later this week.