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M6.8 earthquake, Southern Alaska, 1933-04-27

MagnitudeM6.8mw

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Depth15 km

Time (UTC)1933-04-27 02:36

Rank in 19339 / 101among M6+

Rank since 19002114 / 14,458

Energy vs an M6×19approx.

Southern Alaska · 61.09, -151.11

M6.5+ within 300 km (largest first)

1964 M9.2M9.2

1912 M7.2M7.2

2016 M7.1M7.1

2018 M7.1M7.1

1906 M7.0M7.0

1928 M7.0M7.0

1943 M6.9M6.9

1933 M6.8M6.8

1936 M6.8M6.8

1932 M6.8M6.8

1934 M6.8M6.8

1954 M6.8M6.8

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.4 1933-01-04	1933-01-04 03:59	20 km	22 km ENE of Whittier, 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
M6.2 1931-12-24	1931-12-24 03:40	100 km	16 km WNW of Happy Valley, Alaska
M7.0 1928-06-21	1928-06-21 16:27	15 km	52 km NE of Chenega, Alaska
M6.6 1925-02-23	1925-02-23 23:53	25 km	57 km ENE of Whittier, Alaska
M6.0 1923-06-19	1923-06-19 22:43	15 km	38 km SW of Denali National Park, Alaska
M6.4 1916-02-15	1916-02-15 11:35	25 km	Prince William Sound, 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.