MIAMI, Aug. 22 (UPI) -- Tropical Storm Fiona weakened to a depression in the Atlantic on Monday, but two new storms are developing with one possibly threatening the East Coast next week.
Fiona's maximum sustained winds early Monday were near 35 mph, according to the U.S. National Hurricane Center. The sustained gusts were 40 mph on Sunday. A storm is listed as a tropical storm when it reaches 39 mph.
Fiona is centered about 670 miles southeast of Bermuda and is moving west-northwest at about 18 mph. Meteorologists at the National Hurricane Center predict little change in strength during the next two days.
Two new systems could be cause for concern in the next week, with the first storm possibly threatening the U.S. East Coast in 7-10 days.
The first storm, a tropical wave about 850 miles east of the Lesser Antilles, will bring rain and winds to those islands by midweek. Dry air is expected to slow its development as it moves westward to west-northwest at 15 to 20 mph. Forecasters give it a 20 percent chance of becoming a named storm in the next 48 hours, but its chances improve after that as it is expected to curve through the Caribbean and then over the Bahamas.
The second system appears to be forming into a tropical depression off West Africa. This system is expected to move west to west-northwest at 15 to 20 mph over the eastern tropical Atlantic. Forecasters give a 100 percent chance of becoming a named storm in the next 48 hours.
After Fiona, the next two hurricane names are Gaston and Hermine.