The Kelvin wave is expected to raise sea levels along the California coast by up to 12 inches, increasing the risk of flooding and beach erosion. Homes and infrastructure in coastal areas, including train tracks in San Clemente, are already vulnerable due to recent damage from Hurricane Marie. Elevated sea levels combined with storms or high tides could lead to significant destruction, particularly in areas like Laguna Beach and Dana Point, which have already declared emergencies. Scientists warn that the effects of the wave could last for months, compounding the challenges posed by climate change and rising sea levels.