The National Hurricane Center is monitoring two disturbances in the Atlantic—the first poised to approach the northern Leeward Islands later this week and the second near the Cabo Verde Islands—while Hurricane Erin, now a Category 3, heads away from the Caribbean.

Hurricane Erin has passed over the Caribbean’s northern Leeward Islands, including Sint-Maarten, Saba, and Sint-Eustatius, as a Category 4 storm, causing minimal structural damage but prompting widespread safety warnings,

Tropical Storm Erin has begun strengthening as it streaks west across the Atlantic and is on track to reach hurricane status as soon as Friday, prompting tropical storm watches in the northern Leeward Islands.