Hurricane Erin has re-intensified into a Category 4 storm on Sunday, with the U.S. National Hurricane Center warning of life-threatening surf and rip currents along the U.S. eastern seaboard this week.

The storm will remain a major hurricane through the middle of the week, according to the National Hurricane Center.

After reaching Category 5 over the weekend, Hurricane Erin is now down to Category 2 but the large hurricane is still causing problems off the East Coast of the U.S.

As of 5:00 p.m. AST on Sunday, Erin’s center was positioned approximately 275 miles northwest of San Juan, Puerto Rico, tracking west-northwest at 13 mph. Although no longer directly affecting the area, the storm’s outer bands are still delivering heavy rainfall, dangerous marine conditions, and life-threatening surf along coastal areas.

Tropical Storm Erin is approaching Puerto Rico and the Virgin Islands, bringing heavy rains that could cause flooding and landslides

Hurricane Erin is continuing on its journey across the Atlantic after lashing the U.S. Virgin Islands and Puerto Rico with strong winds and torrential rain on Sunday. FOX Weather Meteorologist Jane Minar breaks down the latest forecast on Aug.

Implications for the Leeward Islands: Residents and visitors in St. Thomas, St. John, St. Croix, Puerto Rico and the northern Leeward Islands should monitor this system throughout the week. Even if the wave remains weak, increased moisture could bring showers, gusty winds and higher seas toward the end of the week.

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 is expected to produce life-threatening surf and rip currents to the Atlantic coast from Florida to Canada. Erin became the Atlantic season's first hurricane as expected late Aug. 15, then exploded into a Category 5 storm Aug.