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M6.6 earthquake, Alaska, 1999-01-28

MagnitudeM6.6mwc

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Depth67 km

Time (UTC)1999-01-28 08:10

Rank in 199927 / 135among M6+

Rank since 19003605 / 14,458

Energy vs an M6×8approx.

18 km WSW of Nikolski, Alaska · 52.89, -169.12

M6.5+ within 300 km (largest first)

1929 M7.8M7.8

1965 M7.8M7.8

1916 M7.4M7.4

2011 M7.3M7.3

1901 M7.1M7.1

1957 M7.1M7.1

1902 M7.0M7.0

1940 M7.0M7.0

1957 M6.9M6.9

1935 M6.9M6.9

2011 M6.9M6.9

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.1 1997-07-20	1997-07-20 00:30	14 km	102 km ESE of Nikolski, Alaska
M6.0 1997-05-08	1997-05-08 13:29	33 km	189 km SW of Nikolski, Alaska
M6.3 1996-03-30	1996-03-30 13:05	33 km	81 km S of Nikolski, Alaska
M6.0 1992-02-13	1992-02-13 02:38	44 km	59 km S of Akutan, Alaska
M6.0 1991-08-14	1991-08-14 12:53	275 km	163 km N of Nikolski, Alaska
M6.0 1990-11-21	1990-11-21 01:48	33 km	206 km ESE of Atka, Alaska
M6.0 1990-01-08	1990-01-08 19:44	33 km	107 km SSW of Nikolski, Alaska
M6.3 1989-05-19	1989-05-19 02:21	104 km	23 km NE of Akutan, Alaska
M6.0 1988-11-15	1988-11-15 08:41	23 km	177 km WSW of Nikolski, Alaska
M6.0 1987-08-14	1987-08-14 17:39	118 km	55 km NNW of Nikolski, 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.