Home › 1929 › Alaska

M7.9 earthquake, Alaska, 1929-12-17

MagnitudeM7.9mw

This page is updated only once a day and is not an alert service. For current earthquake and tsunami information, check the Japan Meteorological Agency, the USGS and your local authorities.

Depth20 km

Time (UTC)1929-12-17 10:58

Rank in 19292 / 125among M6+

Rank since 1900149 / 14,458

Energy vs an M6×617approx.

93 km NW of Attu Station, Alaska · 53.44, 172.20

M6.5+ within 300 km (largest first)

1929 M7.9M7.9

2017 M7.7M7.7

1975 M7.6M7.6

1907 M7.4M7.4

1990 M7.1M7.1

1940 M7.0M7.0

1909 M7.0M7.0

1953 M7.0M7.0

1911 M6.8M6.8

1935 M6.8M6.8

2017 M6.8M6.8

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.3 1925-09-05	1925-09-05 16:30	25 km	236 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 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
M6.2 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
M6.8 1911-11-13	1911-11-13 16:13	20 km	129 km SSE of Attu Station, Alaska
M7.0 1909-04-10	1909-04-10 19:34	35 km	167 km WSW of Attu Station, Alaska
M7.4 1907-09-02	1907-09-02 16:01	15 km	151 km S 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.