ORLANDO, Fla. _ The National Hurricane Center continued to monitor four tropical disturbances Sunday with varying chances for development throughout a busy Atlantic Ocean.
Two of the four disturbances tracked are likely to become tropical depressions sometime this week, according to the NHC's 2 p.m. advisory.
First, forecasters are monitoring an area of low pressure located about midway between the west coast of Africa and the Leeward Islands.
NHC forecaster John Cangialosi said the area is gradually growing more defined, although associated showers and thunderstorms remain disorganized. It's expected to develop into a tropical depression tonight or Monday as it moves westward across the central tropical Atlantic, with a 90% chance to form within the next two to five days.
The second disturbance is a tropical wave just off the coast of western Africa with more organized showers and thunderstorms. With gradual development expected due to favorable conditions, its chances of formation are high, with 70% in the next two days and 90% in the next five days _ an increase from Sunday morning.
"Interests in the Cabo Verde Islands should monitor the progress of this system as gusty winds and locally heavy rainfall is possible there on Monday and Tuesday," Cangialosi said.
Third, another tropical wave over the central Caribbean Sea, just southwest of Hispaniola, continues to produce disorganized showers, and any potential development would happen slowly as it moves westward across the sea. It's expected to run into unfavorable upper-level winds, so its chances of formation over the next five days remain low at 10%.
The fourth disturbance is a trough of low pressure located just southeast of Bermuda with somewhat favorable conditions for development. However, it's producing disorganized cloudiness and showers as it moves west-northwestward, and its chances are low at 10% over the next two days, and 30% over the next five days.
The next hurricane center advisory on the four developing tropical systems is expected around 8 p.m. Sunday.
The center issued its final advisory on Post-Tropical Cyclone Omar overnight, as the low remnant is expected to fully dissipate very soon. The NHC also stopped tracking what was once Tropical Storm Nana on Friday.
The remaining names for the 2020 season are Paulette, Rene, Sally, Teddy, Vicky and Wilfred.
If the total amount of 2020 storms exceeds the designated name list; which it is expected to, hurricane specialists will begin using letters from the Greek alphabet to name storm; a tactic meteorologists have only had to use once before in 2005, which had a total of 28 named storms.
Orlando Sentinel staff writers Joe Mario Pedersen and Richard Tribou contributed to this report.
