Earthquake Prediction California 2025. At around 10:44 pacific time on december 5, a huge earthquake struck around 60 miles off the coast of california. New research on the cascadia subduction zone shows it has a segmented fault structure, impacting earthquake predictions and preparedness strategies, potentially affecting building codes in vulnerable areas like.

When people think of a “big one,” a magnitude 8.0. The magnitude 7 quake triggered a tsunami alert for some.