The National Hurricane Center is monitoring a broad area of low pressure far out in the Atlantic Ocean it gives a "greater than 50 percent" chance of becoming a tropical depression in the next 48 hours. The system became better organized overnight, but lacks a circulation center and faces weather conditions in the next day that could dampen its development.
It would be named Erika if it became a tropical storm.
The storm is located about 500 miles east of the Western Antilles, according to an 8 a.m. bulletin, and is moving northwest at about 15 mph.
Computer models run on Monday morning predict the storm will continue on a path between south Florida and Cuba and pass near Puerto Rico this weekend.