Currently, Michael is approximately 395 miles south of Panama City, Florida and around 365 miles south of Apalachicola, Florida.
Florida governor Rick Scott called Michael a "monstrous hurricane" with a devastating potential from high winds, storm surge and heavy rains.
As of 2 a.m. Thursday, Michael was about 25 miles east of Macon, Georgia, and is expected to move off the Mid-Atlantic coast by early Friday.
Hurricane Michael weakened to tropical storm Thursday but remained a menace as it rolled across the Southeast, leaving two dead after tearing a path of devastation through the Florida Panhandle and parts of Georgia.
If Hurricane Michael makes landfall as a Category 4 storm, it would be the strongest hurricane to hit the Florida Panhandle in recorded history, according to Colorado State University meteorologist Dr. Phil Klotzbach.
The National Hurricane Center further expects tropical storm conditions to spread northward along the southeast USA coast through Friday.
Florida has declared a state of emergency, as have Alabama and Georgia.
"If you're responsible for a patient, you're responsible for the patient". Forecasters said it will unleash damaging winds and rain all the way into the Carolinas, which are still recovering from Hurricane Florence's epic flooding.
North Carolina Governor Roy Cooper told residents: "I know people are worn out from Florence, but don't let this storm catch you with your guard down".
President Donald Trump, speaking to reporters at the White House, said the country was very well prepared for the hurricane, adding it was much bigger than had been expected.
Adrian Mahangos hopes he is one of the lucky ones. It also was an October icon - the strongest continental United States hurricane to make an October landfall based on maximum sustained winds at 155 miles per hour.
Mr Mahangos is not going anywhere.
Just an hour along the coast, it's different.
Several hours ahead of landfall, seawater was already lapping over the docks at Massalina Bayou near downtown Panama City, and knee-deep water was rising against buildings in St. Marks, which sits on an inlet south of Tallahassee.
A man in the distance is gathering sand from the beach while it's still light and pouring it into trash bags - making do with what's at hand to protect from the water.
Sheriff A.J. Smith in Franklin County, near the coast, sent his deputies door to door Tuesday urging people to evacuate, saying they did everything they could to get the word out.
People in low-lying coastal areas are fleeing the Panhandle as part of mandatory evacuation orders.
Where has Michael hit and where is it now? .
Forecasters warned that Michael could ultimately dump a foot (30 centimeters) of rain in western Cuba, triggering flash floods and mudslides in mountain areas.
The Gulf of Mexico produces 17 percent of daily US crude oil output and 5 percent of daily natural gas output, according to the US Energy Information Administration.