A disturbance over the North Atlantic could become a tropical depression later Thursday, forecasters at the National Hurricane Center in Miami said.
The well-defined low pressure system was about 650 miles east of the southern Windward Islands and was moving west-northwestward at 15 to 20 mph, the NHC said.
The system was producing organized shower and thunderstorm activity over the past several hours and if it persists, tropical depression or tropical storm advisories could be issued.
Drya air on the north and west sides of the disturbance were still impeding development early Thursday.
The chance for formation over the next 48 hours remains high at 70 percent.
A Hurricane Hunter aircraft is scheduled to investigate the system Thursday afternoon.