The massive waves pose serious risks to beachgoers, surfers, and coastal areas. Life-threatening swimming conditions are expected, with waves capable of moving hundreds of feet up beaches faster than a person can run. Beach erosion will be significant, as high tides push waves farther inland. Amateur surfers are advised to avoid the ocean, as breaking waves could reach heights four times taller than a human. Mariners may face hazardous conditions due to rough waters, and ferry crossings could be canceled. Officials strongly urge the public to stay away from the ocean and beaches during this event.