Hurricane Erin Intensifies to Category 4, Poses Life-Threatening Rip Currents and High Surf Along Eastern US Coast and Bermuda

Hurricane Erin, now a formidable Category 4 storm, has expanded exponentially in the Atlantic, posing significant concerns due to its vast dimensions. The National Hurricane Center (NHC) warns that the impending storm could cause life-threatening rip currents and towering waves to impact the eastern US coastline and Bermuda as it traverses northward.

The hurricane’s extensive wind field is currently sending large swells out for hundreds of miles, putting US shores at risk with dangerous rip currents starting Tuesday. While forecasts predict Erin will remain offshore, its influence is already being felt along the eastern seaboard.

Erin’s outer rain bands have been lashed against Puerto Rico, leading to flash flooding and power outages. The southeast Bahamas and Turks and Caicos Islands have also been impacted early Monday, according to NHC reports. By Tuesday, much of the East Coast and Bermuda can expect large swells from Hurricane Erin, with conditions expected to worsen through midweek.

“The threat to life from rip currents and high surf along our beaches is very real,” stated the National Weather Service (NWS) office in Morehead City, North Carolina, in a beach hazards statement.

Erin is projected to curve north-northeast between the US East Coast and Bermuda over the coming days, staying offshore but growing stronger again and expanding further in size. This means its impact will not be through direct landfall but through water: large, pounding surf, dangerous currents, and coastal flooding during high tides.

In response to the approaching hurricane, Dare County in North Carolina declared a local state of emergency last Sunday, which includes a mandatory evacuation order for Hatteras Island. The county anticipates coastal flooding and ocean overwash to begin as early as Tuesday and continue through Thursday, with portions of NC Highway 12 on Hatteras Island likely to be impassable for several days.

Bermuda also lies within the hurricane’s area of influence, with forecasts predicting the island will experience very rough seas and possibly tropical storm–force winds later this week.

Along the US East Coast, from South Carolina to the Delmarva Peninsula and New Jersey shore, the risk of rip currents will significantly increase from Tuesday through Thursday, even under sunny skies. So far this year, 44 people have perished due to rip currents and other surf-zone hazards in the US, according to the NWS. Rip currents are one of the leading causes of weather-related fatalities in the United States, behind only heat and flooding. The NWS urges beachgoers to avoid swimming when rip current alerts are issued.

Heavy rainfall continues to be produced by Erin’s outer bands across Puerto Rico, with an additional 2 inches expected through Monday night, according to NHC data. A flood watch remains in effect for the island until Monday evening, as Hurricane Erin has left approximately 100,000 people without power, Governor Jennifer González-Colón stated on Sunday.

Additional rainfall of up to 6 inches is expected over the Turks and Caicos Islands and the eastern Bahamas through Tuesday, with flash flooding, landslides, and mudslides possible. Tropical storm warnings are currently in effect for the Turks and Caicos Islands and southeast Bahamas.

Hurricane Erin’s rapid intensification over the weekend served as a stark reminder of how swiftly storms can strengthen in a warming climate. It is also unusual to see a Category 5 storm form so early in the season, particularly outside the Gulf of Mexico. Erin marks the first hurricane of the Atlantic season. Four other systems had previously roamed the Atlantic basin before Erin – Andrea, Barry, Chantal, and Dexter – but none were stronger than tropical storm strength.

The NHC has already identified a tropical wave trailing behind Hurricane Erin with a medium chance of developing into a tropical depression or tropical storm within the next seven days. While it is too early to predict whether this system will materialize or its potential path, forecasters are closely monitoring its development.

Despite Erin stirring up cooler waters beneath the surface, there remains ample warm water for storms to tap into as sea surface temperatures remain well above average. Although they are not quite as warm as the record levels reached in 2023 and 2024, they still significantly exceed the norm for a non-heating world.

August is typically when tropical activity peaks: The busiest stretch of the season usually occurs from mid-August to mid-October. Forecasters expect above-average tropical activity this year.