The first hurricane of the season will probably form in the Atlantic later this week, potentially strengthening into a major Category 3 storm north of the Caribbean Islands. After emerging from Africa this past weekend, a tropical disturbance is forecast to bring rough weather to the Cabo Verde Islands into Monday.

A low pressure system off the coast of Africa is forecast to become a tropical storm or Hurricane Erin this week and move toward the U.S. east coast. Here’s what the spaghetti models show

Forecasters say the system, called Invest 97 for now, continued to look more organized and and had a well-defined center.