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M6.8 earthquake, Alaska, 1935-02-22

MagnitudeM6.8mw

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Depth30 km

Time (UTC)1935-02-22 17:06

Rank in 193519 / 111among M6+

Rank since 19002173 / 14,458

Energy vs an M6×17approx.

95 km SE of Attu Station, Alaska · 52.29, 174.26

M6.5+ within 300 km (largest first)

1906 M8.3M8.3

1929 M7.9M7.9

1975 M7.6M7.6

1907 M7.4M7.4

1939 M7.2M7.2

2003 M7.1M7.1

1940 M7.0M7.0

1909 M7.0M7.0

1953 M7.0M7.0

1981 M7.0M7.0

2003 M6.9M6.9

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.0 1931-05-30	1931-05-30 11:34	–	72 km S of Attu Station, Alaska
M7.9 1929-12-17	1929-12-17 10:58	20 km	93 km NW of Attu Station, Alaska
M6.3 1925-01-30	1925-01-30 17:28	28 km	76 km WNW of Attu Station, Alaska
M6.4 1924-09-14	1924-09-14 13:13	25 km	Rat Islands, Aleutian Islands, Alaska
M6.4 1923-07-31	1923-07-31 15:07	15 km	124 km SSW of Attu Station, Alaska
M6.5 1923-07-22	1923-07-22 14:18	25 km	66 km S of Attu Station, Alaska
M6.1 1917-11-14	1917-11-14 09:17	35 km	111 km WNW of Attu Station, Alaska
M6.3 1916-12-14	1916-12-14 16:52	35 km	251 km SE of Attu Station, Alaska
M6.2 1913-04-29	1913-04-29 23:29	15 km	154 km S of Attu Station, Alaska
M6.7 1912-10-18	1912-10-18 11:54	20 km	8 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.