The National Hurricane Center is monitoring two areas in the Atlantic Ocean for potential tropical development behind Hurricane Erin, with the closest area to watch expected to to track near Puerto Rico and the Caribbean.

The first area has been under the eyes of the National Hurricane Center for a few days as it emerged off Africa’s west coast.

Erin is expected to drift across warmer waters, increasing the likelihood of further strengthening. Hurricane experts watch as Tropical Storm Erin brews in Atlantic Ocean: 'Could result in a period of rapid intensification' first appeared on The Cool Down.

While Hurricane Erin continues to generate rough surf and coastal hazards, AccuWeather meteorologists are monitoring additional tropical waves near the region where Erin initially formed earlier this month.

Erin developed in the eastern Atlantic, moving westward from the Cabo Verde Islands at about 20 mph (32 km/h). Infrared sensors on NOAA's GOES-19 satellite reveal colder cloud tops and deep convection near the center — signs of a strengthening system feeding on warm ocean waters.

Forecasters are tracking two tropical disturbances behind Hurricane Erin, but neither shows signs of becoming an immediate threat to land. One system east of the Lesser Antilles has only a medium chance of development,

The Ocean City Beach Patrol has closed the ocean to swimming, wading and surfing Tuesday as tropical storm activity off the coast brings dangerous conditions to the resort town.

A new system has emerged in the eastern tropical Atlantic, heading westward toward the Leeward Islands as Hurricane Erin continues to spin.