Erin's intensification in the Atlantic brought the storm to a catastrophic Category 5 hurricane on Saturday, but it is now showing signs of weakening. It rapidly intensified into a major hurricane from 2 a.

Erin, the first hurricane of the season, is now a powerful Category 5 hurricane. Here's where it could head in the week ahead.

Erin has become the first hurricane of the Atlantic season with strong waves and rip currents possible along the East Coast of the United States as early as next week.

Weather experts on the Leeward Islands, including Puerto Rico, are keeping close watch as Erin lurches toward the Caribbean and is on track to become a major hurricane.

Puerto Rico (San Juan): Variably cloudy skies with scattered showers and isolated thunderstorms Friday. Highs near 91°F with east winds at 10–15 mph. Conditions will worsen over the weekend, with 90% rain chances on Sunday and breezy south-southwest winds up to 20 mph as Erin passes north.

However, the severity of those impacts is unknown at this time. Swells generated by Erin will begin affecting portions of the northern Leeward Islands, the Virgin Islands and Puerto Rico by this weekend. These swells are likely to cause life-threatening surf and rip current conditions, the NHC said.