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M6.6 earthquake, Alaska, 2002-10-23

MagnitudeM6.6mw

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Depth4 km

Time (UTC)2002-10-23 11:27

Rank in 200225 / 139among M6+

Rank since 19003627 / 14,458

Energy vs an M6×8approx.

53 km ENE of Cantwell, Alaska · 63.51, -147.91

M5.5+ within 100 km in the next 30 days

Event	Time (UTC)	Depth	Place
M7.9 2002-11-03	2002-11-03 22:12	4 km	2002 Denali Fault, Alaska Earthquake

M6.5+ within 300 km (largest first)

1964 M9.2M9.2

2002 M7.9M7.9

1904 M7.3M7.3

1912 M7.2M7.2

1937 M7.1M7.1

2018 M7.1M7.1

1947 M7.1M7.1

1943 M6.9M6.9

1932 M6.8M6.8

1934 M6.8M6.8

1925 M6.6M6.6

1983 M6.6M6.6

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.0 1995-10-06	1995-10-06 05:23	9 km	36 km E of Minto, Alaska
M6.3 1991-05-01	1991-05-01 07:18	115 km	Central Alaska
M6.4 1983-09-07	1983-09-07 19:22	45 km	46 km WNW of Tatitlek, Alaska
M6.6 1983-07-12	1983-07-12 15:10	37 km	37 km WNW of Tatitlek, Alaska
M6.5 1968-10-29	1968-10-29 22:16	10 km	15 km S of Rampart, Alaska
M6.4 1964-04-20	1964-04-20 11:56	30 km	37 km SSE of Glacier View, Alaska
M6.4 1964-04-03	1964-04-03 22:33	39 km	23 km S of Glacier View, Alaska
M9.2 1964-03-28	1964-03-28 03:36	25 km	The 1964 Prince William Sound, Alaska Earthquake
M6.1 1963-04-03	1963-04-03 15:54	50 km	54 km WNW of Tatitlek, Alaska
M6.1 1962-08-18	1962-08-18 16:43	46 km	66 km WNW of Skwentna, 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.