Home › 1946 › Alaska

M6.8 earthquake, Alaska, 1946-11-01

MagnitudeM6.8mw

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.

Depth25 km

Time (UTC)1946-11-01 11:14

Rank in 194618 / 94among M6+

Rank since 19002123 / 14,458

Energy vs an M6×19approx.

57 km SSW of Atka, Alaska · 51.70, -174.44

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

2011 M7.3M7.3

1957 M7.1M7.1

1970 M7.1M7.1

1901 M7.1M7.1

1910 M7.0M7.0

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.0 1945-06-01	1945-06-01 15:13	35 km	128 km SW of Nikolski, Alaska
M6.2 1940-06-02	1940-06-02 11:37	35 km	101 km SW of Adak, Alaska
M6.3 1939-05-10	1939-05-10 07:44	35 km	128 km W of Adak, Alaska
M6.3 1934-11-05	1934-11-05 23:02	35 km	94 km ESE of Adak, Alaska
M6.0 1934-01-11	1934-01-11 10:21	15 km	161 km SSW of Adak, Alaska
M6.3 1933-11-02	1933-11-02 12:27	45 km	52 km ENE of Adak, Alaska
M6.4 1933-09-24	1933-09-24 15:19	55 km	20 km SSW of Adak, Alaska
M6.1 1933-07-19	1933-07-19 15:00	35 km	43 km S of Atka, Alaska
M6.1 1933-07-19	1933-07-19 13:32	35 km	65 km S of Atka, Alaska
M6.0 1933-07-19	1933-07-19 10:55	–	51 km SSE of Atka, 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.