Notable Earthquake of the Week
Cape Mendocino (Gorda), California M 7.2 Earthquake

At 2:27 am, November 8, 1980 a powerful earthquake rocked the Northern California coast. Centered about 30 miles northwest of Eureka, the M 7.2 temblor was felt over a large part of northern California, and as far away as San Francisco, Eugene, Oregon, and western Nevada.

 
Most of the damage occurred within the soft sediments around the southern Humboldt Bay where two sections of an overpass on Highway 101 collapsed onto the railroad tracks below.
Numerous chimneys were knocked down, water and sewer lines were severed, and two homes shifted from their foundations. Cracked walls and broken windows were widespread.
Six people were seriously injured and the quake caused nearly $2 million in damages.
 
Aftershocks persisted for years. Since the mid 1800s, more than 80 earthquakes registering M 5.0 or stronger have shook the North Coast region, including 26 M 6.0s and seven in the >M 7.0 range.


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