Great earthquake
M8.2 Earthquake — 1938 Semidi Islands, Alaska Earthquake
1938-11-10 20:18 UTC · 55.18°, -158.18°
A magnitude 8.2 (great) earthquake struck 1938 Semidi Islands, Alaska Earthquake on 1938-11-10 20:18 UTC, at a depth of 35 km. See it live on Earth Live's real-time 3D globe.
M8.2
Magnitude
35 km
Depth
33.4M t
TNT equivalent
VII
Max intensity (MMI)
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 1 earthquake of magnitude 2.5 or more within 300 km.
Strongest recorded within 300 km since 1900:
- M8.2 — 2021 Chignik, Alaska Earthquake · 2021-07-29
- M7.8 — 2020 Perryville, Alaska Earthquake · 2020-07-22
- M7.6 — 2020 Sand Point, Alaska Earthquake · 2020-10-19
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