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M7.1 earthquake, Central Alaska, 1947-10-16

MagnitudeM7.1mw

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Depth26 km

Time (UTC)1947-10-16 02:09

Rank in 194713 / 83among M6+

Rank since 19001294 / 14,458

Energy vs an M6×40approx.

Central Alaska · 64.06, -148.57

M6.5+ within 300 km (largest first)

2002 M7.9M7.9

1904 M7.3M7.3

1912 M7.2M7.2

1937 M7.1M7.1

1947 M7.1M7.1

1943 M6.9M6.9

1932 M6.8M6.8

1934 M6.8M6.8

2002 M6.6M6.6

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.9 1943-11-03	1943-11-03 14:32	15 km	27 km SE of Skwentna, Alaska
M7.1 1937-07-22	1937-07-22 17:09	10 km	Central Alaska
M6.8 1934-05-04	1934-05-04 04:36	25 km	31 km SSW of Glacier View, Alaska
M6.8 1932-03-25	1932-03-25 23:58	15 km	Alaska Range, about 220 km NW of Anchorage
M6.0 1932-03-25	1932-03-25 23:54	–	90 km SE of Nikolai, Alaska
M6.0 1929-07-04	1929-07-04 04:28	20 km	39 km SW of Salcha, Alaska
M6.1 1929-01-21	1929-01-21 10:30	15 km	35 km E of Healy, Alaska
M6.0 1923-06-19	1923-06-19 22:43	15 km	38 km SW of Denali National Park, Alaska
M6.4 1912-07-08	1912-07-08 21:53	0 km	Mount McKinley (Denali) area, Alaska
M7.2 1912-07-07	1912-07-07 07:57	3 km	Mount McKinley (Denali) area, 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.