California Current - NatureWeatherHub

The Blob Is Back: Massive Pacific Marine Heatwave

July 5, 2026June 26, 2026 by JOSHUA LINN

Aerial view of the Pacific Ocean showing vast dark blue waters with warm golden light on the horizon, illustrating the 2026 marine heatwave off the California coast

A vast marine heatwave off the US West Coast is strengthening instead of fading. Here is what it means for fisheries, wildfires, and the developing El Niño.