Rainfall predictions are anywhere from 20 to 30 inches, which could be particularly disastrous for North Carolina, NWS Tropical Program Coordinator Joel Cline told Newsweek.
The looming hurricanes could exacerbate the red tide by increasing nutrient loads in coastal waters.
The eye of the storm is surrounded by dense, thick clouds.
South Carolina Governor Henry McMaster announced schools would be closed in 26 counties starting Tuesday.
Mandatory evacuation orders began being issued on Monday—beginning with Dare County, North Carolina.
The cruise line reserves the right to change the itinerary, according to its terms and conditions.
A warning means the conditions are happening already or about to happen.
The chances the system will form into a tropical depression by Saturday is 70 percent.
"The governor is an excellent guy and he's really happy with the job we've done," Trump said of Puerto Rico.
Miriam is expected to become a hurricane on Monday night.
"I'm not going risk my life to catch your flight!" one passenger wrote on Twitter, after Hurricane Lane reached Category 5 in the Central Pacific.
There are two storms brewing in the Pacific Ocean: One is headed for Hawaii while the other tracks in the direction of South Korea.
Hurricane Lane is the sixth hurricane of this year's eastern Pacific hurricane season.
The tropical storm spiraled to a Category 2 hurricane in the space of six hours on Tuesday and could clip Canada, but will likely weaken before nearing Newfoundland.
Chris is expected to become a Category 1 hurricane, bringing dangerous rip currents and high surf to the East Coast.
Forecasters expect Fabio to become a major hurricane by Tuesday.