Home › 1997 › Alaska

M6.6 earthquake, Alaska, 1997-12-17

MagnitudeM6.6mwc

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)1997-12-17 04:38

Rank in 199732 / 136among M6+

Rank since 19003592 / 14,458

Energy vs an M6×8approx.

Rat Islands, Aleutian Islands, Alaska · 51.19, 178.87

M6.5+ within 300 km (largest first)

1965 M8.7M8.7

1906 M8.3M8.3

2014 M7.9M7.9

2003 M7.8M7.8

1965 M7.6M7.6

1965 M7.4M7.4

1939 M7.2M7.2

2003 M7.1M7.1

1916 M7.0M7.0

1981 M7.0M7.0

2003 M6.9M6.9

1965 M6.8M6.8

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.7 1997-03-26	1997-03-26 02:08	33 km	273 km WSW of Adak, Alaska
M6.8 1996-03-22	1996-03-22 03:24	20 km	Rat Islands, Aleutian Islands, Alaska
M6.5 1995-04-23	1995-04-23 02:55	17 km	260 km WSW of Adak, Alaska
M6.3 1995-01-16	1995-01-16 18:14	33 km	298 km WSW of Adak, Alaska
M6.2 1992-06-03	1992-06-03 06:10	22 km	Rat Islands, Aleutian Islands, Alaska
M6.4 1991-01-23	1991-01-23 01:12	108 km	Rat Islands, Aleutian Islands, Alaska
M6.2 1989-09-20	1989-09-20 13:19	33 km	Rat Islands, Aleutian Islands, Alaska
M6.0 1988-02-16	1988-02-16 04:22	33 km	190 km SE of Attu Station, Alaska
M6.0 1985-05-09	1985-05-09 19:14	33 km	Rat Islands, Aleutian Islands, Alaska
M6.3 1985-05-09	1985-05-09 19:05	33 km	Rat Islands, Aleutian Islands, 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.