The National Hurricane Center says the waves were measured by satellite.
However, it's not too late to prepare for Hurricane Florence - or any other storm that may move through Coweta County.
In Charleston, South Carolina, streets were quiet with schools and many offices and businesses closed.
Florence is expected to start bringing tropical storm force winds to the Carolinas late Thursday.
Hurricane Olivia is heading towards Hawaii as Tropical Storm Paul is approaching the west coast of Mexico.
Florence is the most unsafe of three tropical systems in the Atlantic.
The NHC said Helene was weakening, however, and posed no danger to land. Forecasters also were tracking two other disturbances.
Because Hurricane Florence is so unbelievably massive, astronauts had to use a super wide-angle lens to capture photographs of the monstrous storm from space.
The Homeland Security Department is pushing back against a Democratic U.S. senator's claim that the Trump administration transferred almost $10 million from the government's disaster relief agency to immigration enforcement.
"Heed the warnings", said Byard, adding there was "well over $20 billion" in FEMA's disaster relief fund.
Merkley provided no evidence for his suggestion that the money came from hurricane response funds.
Georgia Emergency Management Agency (GEMA) is now in a Level 2 enhanced monitoring operation, officials told 11Alive.
A hurricane hunter with the National Oceanic & Atmospheric Administration (NOAA) flew into the category three Hurricane Florence and reported back Wednesday what he was seeing.
"Today's the day", he said.
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For many of those under evacuation orders, getting out of harm's way has proved difficult, as airlines cancelled flights and motorists had a hard time finding gas. McNoldy says "the rainfall has been and continues to be a very substantial threat over the entire area".
Charleston Mayor John Tecklenburg told CNN on Wednesday that the almost 135,000 residents of his historic coastal city should leave now before the storm arrives later in the week.
In Virginia, 245,000 coastal residents were ordered to evacuate, including from the Eastern Shore.
The ground in Athens already is saturated from the 27 inches of rain that fell since April, so flooding remains a possibility as a result of Hurricane Florence, according to King.
That's saying a lot, given the impacts from Hurricanes Diana, Hugo, Fran, Bonnie, Floyd, and Matthew.
A state of emergency has been declared in Maryland, North Carolina, South Carolina, Virginia and Washington amid concern over potential torrential rain and flooding. In fact, Florence itself is larger than North Carolina itself. The southeast coast of North Carolina will experience a prolonged storm surge reaching up to nine to 13 feet from near the mouth of the Cape Fear to Cape Lookout.
Significantly, hurricane-force winds extended 70 miles (110 kilometers) from the eye, and tropical-storm-force winds reached 175 miles (280 kilometers) outward, making outdoor preparations hard or unsafe as early as Thursday.
A unsafe Hurricane Florence is steadily making its way to the U.S. East Coast. Currently, tropical storm-force winds extend 175 miles from the storm's center, according to the NHC. Strengthening is forecast through Wednesday.
To whip up a monstrous storm like the one chugging for the Carolinas you need a handful of ingredients-warmer than normal sea temperatures; a wind pattern that allows a storm to get strong and stay strong; higher sea levels; and a storm covering an enormous area-and Florence has them all.
President Donald Trump declared states of emergency for North and SC and Virginia, opening the way for federal aid.
Hurricane Florence is blasting toward the Carolinas, carrying sustained winds of up to 130 miles per hour and the threat of "life-threatening storm surge and rainfall", the National Hurricane Center says.
A sign is seen on a boarded up vacation rentals office near Wrightsville beach, North Carolina on September 12, 2018.
A steady stream of vehicles full of people and belongings flowed inland Tuesday, and North Carolina Gov. Roy Cooper tried to convince everyone to flee. It is poised to slow to a crawl there and then drift to the southwest, unloading disastrous amounts of rain.