Kelvin wave

A kelvin wave is moving through the Pacific Ocean toward the California coast. Such eastward-travelling pulses of warm water can raise coastal sea levels and ocean temperatures, and are often watched as possible early signs of an El Niño event. Coverage so far is limited, and the size of the wave and its expected impact on California's coastline or weather remain unclear.

Scientists are warning that a Kelvin wave, a large pulse of warm water moving along the equator toward the West Coast, could raise ocean levels along the California coast by as much as a foot. The phenomenon is being linked to developing warm ocean conditions and could worsen coastal erosion and flooding risks, prompting concern among climate and ocean researchers.

Scientists are monitoring a slow-moving, planetary-scale Kelvin wave heading toward California. The oceanic phenomenon, which travels along the equator and can carry warm water eastward, is drawing concern over potential effects on coastal conditions and weather patterns. Observers are watching closely as the wave approaches the US West Coast, with experts weighing what its arrival could mean for the region.

A powerful Kelvin wave — a pulse of unusually warm water moving eastward along the equator beneath the ocean surface — is expected to arrive off the California coast as El Niño conditions strengthen. Scientists say the warm water could reinforce the El Niño pattern, influencing storms, coastal temperatures and rainfall across the West Coast in the coming weeks and months.