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M7.0 earthquake, Alaska, 1989-09-04

MagnitudeM7.0mw

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Depth11 km

Time (UTC)1989-09-04 13:14

Rank in 19898 / 137among M6+

Rank since 19001506 / 14,458

Energy vs an M6×32approx.

164 km SE of Chignik, Alaska · 55.32, -156.43

M6.5+ within 300 km (largest first)

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

1912 M7.1M7.1

1923 M7.0M7.0

1999 M7.0M7.0

1989 M7.0M7.0

1993 M6.9M6.9

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.0 1989-02-22	1989-02-22 10:25	33 km	94 km SSE of Akhiok, Alaska
M6.5 1986-09-12	1986-09-12 23:57	31 km	95 km SSE of Akhiok, Alaska
M6.8 1986-06-19	1986-06-19 09:09	17 km	100 km SSE of Old Harbor, Alaska
M6.1 1985-11-14	1985-11-14 22:17	33 km	79 km SE of Sand Point, Alaska
M6.6 1985-10-09	1985-10-09 09:33	30 km	85 km SE of Sand Point, Alaska
M6.0 1985-01-02	1985-01-02 05:32	33 km	98 km ESE of Perryville, Alaska
M6.5 1983-02-14	1983-02-14 03:20	47 km	94 km ESE of Sand Point, Alaska
M6.4 1979-05-20	1979-05-20 08:14	71 km	104 km SSE of Ugashik, Alaska
M6.7 1979-02-13	1979-02-13 05:34	33 km	121 km SE of Chignik, Alaska
M6.6 1978-04-12	1978-04-12 03:42	14 km	94 km SSE of Old Harbor, 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.