Hurricane Erin, a powerful Category 4 storm, generated substantial wave action along the Jersey Shore in August 2025. While the storm did not make direct landfall on the U.S. coast, its distant influence led to hazardous surf conditions impacting communities along the Eastern Seaboard.
On August 21, 2025, wave heights reached up to 15 feet in popular locations like Brigantine and Seaside Heights, posing significant risks to beachgoers. This surge contributed to beach erosion and localized flooding. The wave heights exceeded initial forecasts from the National Weather Service, marking the most significant surf in New Jersey since August 2020. In response to the dangerous conditions, coastal flood warnings were issued, advising caution for all water activities.
Governor Phil Murphy of New Jersey declared a state of emergency across all 21 counties on August 21, 2025, in anticipation of Erin's effects. He warned of wind gusts up to 50 mph and waves cresting at 17 feet. The governor highlighted the persistent danger of rip currents, potential for coastal and flash flooding, and a high risk of erosion. Residents were urged to stay informed about weather forecasts and warnings, and to be aware of evacuation protocols.
The storm's broad reach resulted in coastal flood advisories for numerous counties, including Middlesex, Monmouth, and Ocean in New Jersey, as well as coastal areas of New York City. Although the storm's center moved further offshore, its residual effects, such as dangerous rip currents and elevated wave heights, were expected to continue through the weekend. Wave heights were projected to decrease from 4-8 feet on Saturday to 3-7 feet on Sunday, with a high rip current risk remaining for all Atlantic beaches through Sunday.
Towns such as Upper Township in Cape May County experienced severe beach erosion, with some areas losing up to 50% of their beach. Monmouth Beach Mayor Tim Somers expressed concern over the substantial loss of sand, noting that the persistent rough surf, lasting for several days, led to beach closures in many Jersey Shore towns. Officials emphasized the danger of rip currents, stressing that even on pleasant days, the ocean's power posed a significant threat, making it difficult for people to adhere to warnings to stay out of the water.