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M8.2 earthquake, Alaska Earthquake, 1938-11-10

MagnitudeM8.2mw

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Depth35 km

Time (UTC)1938-11-10 20:18

Rank in 19382 / 149among M6+

Rank since 190033 / 14,458

Energy vs an M6×2,213approx.

1938 Semidi Islands, Alaska Earthquake · 55.18, -158.18

M6.5+ within 300 km (largest first)

1938 M8.2M8.2

2021 M8.2M8.2

2020 M7.8M7.8

2020 M7.6M7.6

1917 M7.4M7.4

2025 M7.3M7.3

2023 M7.2M7.2

1948 M7.1M7.1

1991 M7.0M7.0

1923 M7.0M7.0

1989 M7.0M7.0

1993 M6.9M6.9

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.7 1937-04-29	1937-04-29 18:52	35 km	68 km SSE of King Cove, Alaska
M6.6 1934-07-28	1934-07-28 21:37	20 km	128 km SE of Chignik, Alaska
M6.3 1932-10-30	1932-10-30 20:47	35 km	68 km SE of Sand Point, Alaska
M6.6 1932-10-16	1932-10-16 12:08	25 km	72 km SE of Sand Point, Alaska
M6.2 1927-08-06	1927-08-06 00:14	35 km	74 km SE of Perryville, Alaska
M6.2 1927-07-28	1927-07-28 16:17	55 km	64 km SSE of Perryville, Alaska
M6.2 1927-03-25	1927-03-25 12:55	35 km	143 km SE of Perryville, Alaska
M7.0 1923-05-04	1923-05-04 16:26	25 km	113 km ESE of Chignik, Alaska
M6.8 1922-07-02	1922-07-02 13:36	35 km	73 km SW of Sand Point, Alaska
M6.0 1918-06-27	1918-06-27 21:29	35 km	71 km SSE of Sand Point, Alaska

Energy ratio uses the rule that one magnitude unit is about 32 times the energy. Magnitudes and locations are USGS values and can differ from national agencies. Older records are less complete and less precise.