Hurricane Dorian is expected to become a major hurricane today.
Dorian could make landfall as a category 4 storm.
The National Hurricane Center expects Dorian to rapidly increase to a category 3 before landfall.
Three systems have the National Hurricane Center's attention.
Bahamas system could become fourth named storm of the year.
Tropical Storm Chantal formed in the Atlantic during the night.
This system has a 40 percent chance of further development that could impact the holiday weekend.
The low-pressure system in the Atlantic is not expected to develop further.
The 2017 Atlantic hurricane season officially ended Nov. 30.
Irma's predicted path is taking the storm up the center of the Florida peninsula, with slight changes east and west as the storm moves closer.