More than a million people living along the coastlines of SC and Virginia have been ordered to evacuate their homes on Tuesday, as parts of America's mid-Atlantic coast brace for what could be the most powerful storm to ever hit the region.
Since the hurricane has already amassed wind speeds of 130 miles per hour, the coast could see life-threatening wind, rain, and storm surges.
With Florence being upgraded to a Category 4 storm by the National Hurricane Center, several more changes could be on the horizon.
Maps of the storm's trajectory showed it likely to come ashore somewhere near the border of North Carolina and SC.
Hurricane Florence is expected to make landfall on Thursday and will most heavily impact the coastal states of South Carolina, North Carolina and Virginia. The move will allow the state to use the National Guard for preparations and recovery if necessary. "You see how it's beginning to wrap around the center".
"With the possibility that Tropical Storm (sic) Florence could make landfall in SC, likely as a hurricane, our people have already started making preparations".
For Category 4 storms, "Catastrophic damage will occur: Well-built framed homes can sustain severe damage with loss of most of the roof structure and/or some exterior walls". Also take this time to prepare, have a hurricane preparedness kit and have a plan in place with your family in case the worst arrives with Hurricane Florence. Forecasts call for 25-38 cm of rain in the hardest-hit areas, possibly more if the storm stalls over land, as expected.
Gelhaus is one of the million people who are being ordered to evacuate South Carolina's coast by noon on Tuesday.
The hurricane's impacts could range from a strong storm surge to flooding from torrential rainfall and hurricane-force winds.
Crystal Kirwan didn't see she had much choice as she got her family ready to leave their home Monday on the coast of North Carolina, with Category 4 Hurricane Florence threatening the state.
Major hurricanes with winds over 115 miles per hour occur 96% of the time between the middle of August and into the second week in October. Marty Bahamonde, the Director of Disaster Operations at the Office of External Affairs at the Federal Emergency Management Agency (FEMA), tweeted out this harrowing image of all the storms stretching from the Pacific to the Atlantic that the government is tracking.
At 03:00 GMT Issac was about 2 100km east of the Windward Islands - a region still recovering from last year's powerful Hurricane Maria - with winds of 120km/h.
Helene - now just southeast of the Cabo Verde islands off the African coast - had winds of 136km/h, and was expected to turn northwest and then north into the open Atlantic by midweek, the NHC said.
Hurricane Isaac - which late Sunday became the fifth hurricane of the season - is heading west toward the Caribbean.
This week is the expected peak of hurricane season, according to forecasters, so seeing these active storms churning through the Atlantic right now isn't fully unexpected.