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M6.8 earthquake, Alaska, 1989-10-07

MagnitudeM6.8mw

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Depth20 km

Time (UTC)1989-10-07 15:48

Rank in 198918 / 137among M6+

Rank since 19002355 / 14,458

Energy vs an M6×16approx.

177 km WSW of Adak, Alaska · 51.31, -179.03

M6.5+ within 300 km (largest first)

1957 M8.6M8.6

1986 M8.0M8.0

1996 M7.9M7.9

1905 M7.6M7.6

1929 M7.3M7.3

1996 M7.3M7.3

2007 M7.2M7.2

1905 M7.2M7.2

1957 M7.2M7.2

1957 M7.1M7.1

1910 M7.0M7.0

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.1 1989-07-03	1989-07-03 17:09	33 km	94 km SW of Atka, Alaska
M6.0 1989-01-08	1989-01-08 19:57	33 km	96 km SSW of Atka, Alaska
M6.8 1987-05-06	1987-05-06 04:06	20 km	235 km WSW of Adak, Alaska
M6.4 1987-03-21	1987-03-21 10:41	93 km	65 km WNW of Adak, Alaska
M6.2 1987-02-18	1987-02-18 00:00	33 km	194 km WSW of Adak, Alaska
M6.5 1986-06-18	1986-06-18 08:05	27 km	57 km S of Adak, Alaska
M6.4 1986-05-08	1986-05-08 05:37	18 km	106 km SE of Adak, Alaska
M8.0 1986-05-07	1986-05-07 22:47	33 km	1986 Atka, Alaska Earthquake
M6.3 1986-05-07	1986-05-07 20:43	22 km	99 km SSW of Atka, Alaska
M6.2 1985-05-24	1985-05-24 22:04	34 km	134 km WSW of Adak, 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.