The Air Force Reserve Hurricane Hunters were investigating an area of low pressure several hundred miles east of the Leeward Islands Tuesday afternoon.
It was one of two weather disturbances in the Central Atlantic Ocean.
Convection flared up around the disturbance Tuesday morning and a depression could take shape today or later this week.
The system is expected to move WNW or NW at 10 to 15 mph.
Farther east, an area of disturbed weather stretching from near the Cape Verde Islands to several hundred miles southwest of the islands had not become any better organised.
Still, it has a chance to become a depression during the next couple of days as it grinds westward at 10 to 15 mph.
In the eastern Pacific, an area of low pressure about 800 miles west-southwest of Manzanillo, Mexico, displayed a burst of convection Tuesday and could become a depression within the next day or two as moves WSW at 10 to 15 mph.
In the central Pacific, a disturbance roughly 700 miles east-southeast of Hilo, Hawaii, is poorly organised, but will continue to be monitored as it heads westward.