The fifth named storm of the 2013 Atlantic hurricane season forms in the far eastern Atlantic, while another possible tropical system attempts to organize in the northwestern Caribbean Sea.
Erin was located about 115 miles west southwest of Brava in the Cape Verde Islands and was moving to the west northwest at 15 mph as of NHC's advisory at 11 a.m. EDT.
A tropical storm warning was issued for the southern Cape Verde Islands of Maio, Santiago, Fogo and Brava due to their proximity to the storm.
NHC says Erin will be moving away from the Cape Verde Islands by late Thursday and will pose no further threat to land at least through the weekend as it continues off to the west northwest over open waters.
The possibility does exist that Erin could become the Atlantic season's first hurricane. Winds are expected to increase to at least 60 mph by Saturday.
Meanwhile, all eyes remain on a tropical disturbance in the northwestern Caribbean Sea that has the potential to also become a named storm as it moves into the southern Gulf of Mexico over the weekend.
Showers and thunderstorms associated with the low pressure had organized enough on Wednesday for the NHC to raise the possibility of development to high and give it an 80 percent chance of becoming a tropical depression or storm. But overnight, that activity has since weakened with most of the shower and thunderstorm activity moving over the Yucatan Peninsula and Belize.
"Development of this system before it moves over land has become less likely, however there is still potential for development once the disturbance moves over the Gulf of Mexico," said Dr. Lixion Avila, a senior forecaster at the NHC.
NHC still gives this system a high chance of developing at 60 percent over the next five days.
The hurricane season is now reaching a period of increased tropical activity, which typically begins in mid-August. The peak of the season occurs around Sept. 10.
The latter half of August is historically a very dangerous period for hurricane strikes along the Mississippi coast.
All coastal residents are strongly advised to stay updated on the latest weather information as it becomes available and to be prepared to evacuate in case a potential storm or hurricane impacts your area.