Those living within the path of quickly-growing Hurricane Florence were advised on Tuesday to "take action now" by the Federal Emergency Management Agency (FEMA).

Florence, currently a Category 4 hurricane, is headed toward the Carolinas and Mid-Atlantic states with 140 mph winds and is expected to make landfall late Thursday or early Friday.

More than 1.5 million people in the massive storm's path have been ordered to evacuate.

FEMA Associate Administrator Jeff Byard warned residents in a press conference to expect infrastructure damage, power outages, and that the storm "has the potential to cause loss of life."

"We cannot emphasize the importance to take action now," he said.

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President Trump approved an emergency declaration for North Carolina on Monday, and tweeted that his administration will be there for to help those in need.

South Carolina Gov. Henry McMaster said during a press conference on Tuesday that his state "must be vigilant" in preparing for such an "unpredictable" storm.

"We are in a very deadly and important game of chess with Hurricane Florence," he said.

Scientists have also warned that the waters of the Atlantic have been unusually warm, which could ramp up the storm's winds to make it close to Category 5 intensity.

He said some models predict as much as 30-40 inches of rain for some areas due to the storm surge and heavy rain.

Watch the latest path of Hurricane Florence above and stay tuned to Fox News Channel for continuing coverage. 

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