At 11 a.m. EDT, Florence's maximum sustained winds were estimated at 75 miles per hour. Florence is looking more organized Sunday morning on satellite. This storm has also weakened significantly as it encountered some strong upper-level wind shear.
"Action today can avoid losses due to Florence", he said.
Forecasters at the NHC said Florence would continue to strengthen and "rapid intensification is likely to begin tonight".
Florence, as a hurricane, will approach the Southeast coastline overnight Thursday into Friday.
So, for US interests, anywhere from the Carolinas to New England, will have to pay attention to Florence.
Now is the time to make preparations ahead of the system.
The Bermuda Weather Service said the island is likely to remain outside Florences radius of tropical storm force winds but warned of potentially very rough southeasterly swells which could create hazardous rip currents, especially on the South Shore.
The National Hurricane Center's latest update on Florence on the morning of September 9. We will closely be monitoring its track in the coming days.
The tropics are increasingly active this weekend - as one might expect in September during hurricane season - with two named storms and one expected to gain a name sometime Saturday. A westward motion is forecasted to continue through the end of the week, with Isaac expected to move across the Lesser Antilles and into the eastern Caribbean Sea on Thursday.
McMaster spoke at the South Carolina Emergency Management Division headquarters in West Columbia, about 10 miles (16 kilometers) from where the South Carolina-Georgia football game was to start a few hours later. Then an nearly due west path is forecast through the rest of the weekend and through early next week.
Olivia is expected to approach the main Hawaiian Islands early next week, but it is too early to determine the magnitude of the potential impacts.
Meanwhile, over the Pacific Ocean, Hurricane Olivia is approaching Hawaii with maximum winds of 85 miles per hour.