Tropical Storm Erin formed Monday in the eastern tropical Atlantic Ocean, just west of the Cabo Verde Islands, forecasters said. The Miami-based National Hurricane Center said it will initiate advisories on the storm starting later Monday morning.

In the central Atlantic, the National Hurricane Center said a tropical wave had a 20% chance of formation within the next seven days. "Development of this system should be slow to occur during the next couple of days due to surrounding dry air,