M8.1 Earthquake — 2009 Samoa Earthquake

A magnitude 8.1 (great) earthquake struck 2009 Samoa Earthquake on 2009-09-29 17:48 UTC, at a depth of 18 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 121 earthquakes of magnitude 2.5 or more within 300 km.

Strongest recorded within 300 km since 1900:

• M8.0 — The 1917 Samoa-Tonga Earthquake · 1917-06-26
• M7.8 — 146 km ESE of Hihifo, Tonga · 1975-12-26
• M7.7 — 133 km NE of Hihifo, Tonga · 1981-09-01

More recent earthquakes

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• M4.5 — Kuril Islands
• M5.3 — central Mid-Atlantic Ridge
• M4.8 — 32 km SSE of Jurm, Afghanistan
• M5.0 — 295 km S of Burica, Panama
• M4.6 — 110 km S of Dampit, Indonesia

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