Forecasters warn that Dorian, with extremely dangerous winds of up to 225 km/h and heavy rain, will make landfall in Florida late Monday (September 2) and early Tuesday (September 3).
The storm is expected to directly affect millions of people in Florida, including sweeping through famous locations such as Walt Disney World and President Donald Trump's Mar-a-Lago resort.
According to AP, each weather forecast shows increased intensity and there are concerns that Dorian could become the strongest storm to hit the east coast of Florida in nearly 30 years.
President Donald Trump has declared a state of emergency in Florida and authorized the Federal Emergency Management Agency to coordinate in disaster relief activities.
He told the press that Mar-a-Lago can handle it itself, the worrying thing is Florida.
A Florida resident shared near a gas station that ran out of fuel: The storm is big and is intensifying. The storm remains a concern. No one knows what could really happen. It's serious."
As Dorian is set to make landfall, as the upcoming weekend holiday comes as major airlines allow travelers to change their bookings without charging, and large cruise ships are also starting to re-route their cruise ships.
Disney World and Orlando resorts are all prepared as they are expected to be on the path of the storm.
People and businesses also quickly reinforced windows with pressure boards.
Supermarkets ran out of bottled drinking water, and long lines of people also lined up at gas stations to store. Fuel shortages have occurred in some locations.
A similar situation has also occurred in the Bahamas, southeast of Florida, with residents also getting ready for the storm.
Dorian is expected to approach the Caribbean on August 31.
Prime Minister Hubert Trinis has warned people to evacuate to avoid the storm.
People line up at supermarkets and gas stations to store food and fuel.