M7.0 Earthquake — 136 km WSW of Brookings, Oregon

A magnitude 7.0 (major) earthquake struck 136 km WSW of Brookings, Oregon on 1991-08-17 22:17 UTC, at a depth of 1 km. See it live on Earth Live's real-time 3D globe.

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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.

This area's earthquake history

In the year before this quake, USGS recorded 210 earthquakes of magnitude 2.5 or more within 300 km.

Strongest recorded within 300 km since 1900:

• M7.4 — 123 km W of Big Lagoon, California · 1922-01-31
• M7.2 — The 1992 Petrolia, California Earthquake · 1992-04-25
• M7.2 — The 1980 Eureka, California Earthquake · 1980-11-08

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