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M6.6 earthquake, Alaska, 1963-01-28

MagnitudeM6.6mw

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Depth35 km

Time (UTC)1963-01-28 13:00

Rank in 196332 / 129among M6+

Rank since 19003356 / 14,458

Energy vs an M6×9approx.

72 km SE of King Cove, Alaska · 54.58, -161.56

M6.5+ within 300 km (largest first)

1946 M8.6M8.6

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

1957 M7.1M7.1

1991 M7.0M7.0

1993 M6.9M6.9

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.0 1961-01-14	1961-01-14 16:38	22 km	129 km S of False Pass, Alaska
M6.4 1957-11-20	1957-11-20 12:40	25 km	85 km ESE of Akutan, Alaska
M7.1 1957-03-22	1957-03-22 14:21	47 km	39 km S of Akutan, Alaska
M6.4 1957-03-17	1957-03-17 22:44	45 km	50 km SE of Akutan, Alaska
M6.2 1957-03-13	1957-03-13 19:59	50 km	53 km S of Akutan, Alaska
M6.1 1956-08-30	1956-08-30 04:24	29 km	132 km ESE of Akutan, Alaska
M6.1 1956-04-22	1956-04-22 17:21	15 km	166 km SSE of King Cove, Alaska
M6.0 1952-08-28	1952-08-28 10:52	43 km	15 km SSE of Sand Point, Alaska
M6.2 1951-11-08	1951-11-08 13:45	35 km	141 km SSE of King Cove, Alaska
M6.1 1948-05-17	1948-05-17 17:48	46 km	39 km SW 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.