SAN JUAN, Puerto Rico (AP) - Hurricane Lee charged through warm Atlantic waters on Friday and threatened to unleash heavy swells across the northeast Caribbean. It became the season’s first Category 5 storm before weakening slightly.

Currently a Category 4 hurricane, it is not expected to make landfall, but meteorologists warned it would generate dangerous waves of up to 15 feet Across the northern coast of Puerto Rico and other nearby islands. While Lee is on a path that would take it a couple hundred miles northeast of the Caribbean, tropical storm conditions are not forecast for the region.

“Although the hurricane is incredibly powerful, its wind field is not particularly large,” the National Hurricane Center said.

The hurricane was located about 500 miles east of the northern Leeward Islands. It had winds of up to 150 miles per hour and was moving west-northwest at 13 mph.