A magnitude 7.2 (major) earthquake struck The 1980 Eureka, California Earthquake on 1980-11-08 10:27 UTC, at a depth of 19 km. See it live on Earth Live's real-time 3D globe.
Source: USGS event page. The TNT equivalent is computed from the magnitude with the standard Gutenberg–Richter energy relation; all other figures are USGS's own.
In the year before this quake, USGS recorded 207 earthquakes of magnitude 2.5 or more within 300 km.
Strongest recorded within 300 km since 1900:
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