Record Sea Levels Loom for California Amid El Niño

El Niño is set to significantly impact California's coast, with a substantial pulse of wave energy expected to raise sea levels by at least half a foot in the coming days. This elevated sea level is predicted to remain for months as the energy travels up the coast. This arrival is compounded by abnormally high sea levels already present due to unusually warm Pacific waters, a factor linked to global climate change.

Adding to the concern, California's tidal cycles will peak in the upcoming months, and El Niño-fueled storms are anticipated to amplify ocean swells. This convergence of factors, including wave energy, elevated tides, and stronger swells, makes it highly probable that California will experience its highest sea levels ever recorded. The influence of this strong El Niño extends beyond sea levels, potentially impacting marine ecosystems and marine life behavior.

The elevated sea levels are partly due to warm water shifting eastward from the western Pacific, forming Kelvin waves. These are not typical waves but vast, slow-moving water masses. A strong burst of westerly winds in August propelled one such wave eastward, which then traveled along the coasts. This northbound pulse is projected to reach San Diego in early October. Further El Niño activity could send additional pulses, maintaining elevated ocean heights through early next year.