A westward-moving tropical wave could produce an area of low pressure in the tropical Atlantic late in the week of Aug. 18, the hurricane center said on Aug. 16. The center shows a 20% chance of storm formation over the next week.

Erin is producing maximum sustained winds of 125 mph (205 km/h) and a central pressure of 940 mb. The storm is moving west‑northwest at 14 mph (22 km/h). Outer rainbands have been producing gusty winds and heavy rainfall across the U.S. Virgin Islands and Puerto Rico since Saturday night.

Authorities have issued tropical storm watches for Anguilla, Barbuda, and St. Martin, potentially delivering heavy rain and strong winds.

Hurricane Erin has officially formed in the Atlantic Ocean on Friday, Aug. 15, according to the National Hurricane Center.