An El Niño-linked Kelvin wave is moving toward California and could leave coastal water levels about 30 centimeters higher for months. This is a forecast, not an observed rise along the entire coast. High tides and storms could amplify the resulting flood and erosion risk, making the timing of local weather as important as the wave itself.
An El Niño-linked Kelvin wave is moving toward California, according to Live Science and International Business Times Singapore. Both accounts describe a broad movement of warm water that could raise the coastal water level by about a foot, or roughly 30 centimeters. The reported change is a forecast for the coming months. It should not be read as an observed, uniform rise at every California beach.[1], [2]
The internal wave does not break on shore like a surface wave. Live Science explains that it shifts the boundary between the ocean’s warmer upper layer and colder deeper layer. That movement can lift water levels at the coast for an extended period. A modest but sustained increase can raise the starting water level on which a later high tide or storm surge arrives.[1]
International Business Times Singapore reports that high tides, storms and heavy rain could compound the coastal flooding risk as the wave arrives. Live Science also identifies possible erosion and stronger storm-surge effects. The size and timing of any local impact remain uncertain: a forecast of higher water is not a prediction that every community will flood. The practical concern is the combination of the incoming wave with weather and tides at particular places.[1], [2]
