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M7.8 earthquake, Alaska, 1929-03-07

MagnitudeM7.8mw

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Depth15 km

Time (UTC)1929-03-07 01:34

Rank in 19293 / 125among M6+

Rank since 1900173 / 14,458

Energy vs an M6×501approx.

234 km SSW of Nikolski, Alaska · 50.91, -169.79

M6.5+ within 300 km (largest first)

1965 M7.8M7.8

1929 M7.8M7.8

1916 M7.4M7.4

2011 M7.3M7.3

1901 M7.1M7.1

1957 M7.1M7.1

1902 M7.0M7.0

1957 M6.9M6.9

1906 M6.9M6.9

1935 M6.9M6.9

1966 M6.9M6.9

2011 M6.9M6.9

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.2 1920-08-26	1920-08-26 23:00	35 km	61 km SSW of Nikolski, Alaska
M7.4 1916-04-18	1916-04-18 04:01	140 km	133 km WNW of Nikolski, Alaska
M6.7 1916-02-20	1916-02-20 17:47	35 km	103 km SE of Nikolski, Alaska
M6.5 1909-09-08	1909-09-08 16:49	25 km	96 km SSE of Nikolski, Alaska
M6.3 1907-01-12	1907-01-12 07:48	15 km	58 km SE of Nikolski, Alaska
M6.6 1906-12-23	1906-12-23 07:01	35 km	135 km SW of Nikolski, Alaska
M6.9 1906-01-27	1906-01-27 09:40	15 km	182 km SSE of Atka, Alaska
M7.0 1902-01-01	1902-01-01 05:20	–	Fox Islands, Aleutian Islands, Alaska
M7.1 1901-12-31	1901-12-31 09:02	–	Fox Islands, Aleutian Islands, 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.