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M7.0 earthquake, Alaska, 1981-01-30

MagnitudeM7.0ms

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Depth33 km

Time (UTC)1981-01-30 08:52

Rank in 19818 / 83among M6+

Rank since 19001479 / 14,458

Energy vs an M6×32approx.

243 km ESE of Attu Station, Alaska · 51.74, 176.27

M6.5+ within 300 km (largest first)

1965 M8.7M8.7

1906 M8.3M8.3

2014 M7.9M7.9

2003 M7.8M7.8

1975 M7.6M7.6

1965 M7.6M7.6

1965 M7.4M7.4

1907 M7.4M7.4

1939 M7.2M7.2

2003 M7.1M7.1

1940 M7.0M7.0

1916 M7.0M7.0

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.0 1979-10-18	1979-10-18 03:35	62 km	290 km ESE of Attu Station, Alaska
M6.6 1977-09-04	1977-09-04 17:24	8 km	Rat Islands, Aleutian Islands, Alaska
M6.4 1977-09-04	1977-09-04 17:10	31 km	Rat Islands, Aleutian Islands, Alaska
M6.4 1977-09-04	1977-09-04 15:40	34 km	Rat Islands, Aleutian Islands, Alaska
M7.6 1975-02-02	1975-02-02 08:43	10 km	36 km NE of Attu Station, Alaska
M6.4 1971-07-25	1971-07-25 15:41	28 km	81 km S of Attu Station, Alaska
M6.7 1971-06-11	1971-06-11 13:58	27 km	242 km SE of Attu Station, Alaska
M6.3 1970-03-19	1970-03-19 23:33	18 km	169 km S of Attu Station, Alaska
M6.1 1968-12-15	1968-12-15 02:28	29 km	220 km SE of Attu Station, Alaska
M6.2 1968-12-15	1968-12-15 02:14	36 km	230 km SE of Attu Station, 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.