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M6.5 earthquake, Guam, 1971-10-23

MagnitudeM6.5mw

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Depth23 km

Time (UTC)1971-10-23 22:33

Rank in 197142 / 143among M6+

Rank since 19004022 / 14,458

Energy vs an M6×6approx.

276 km SW of Merizo Village, Guam · 11.89, 142.55

M6.5+ within 300 km (largest first)

1993 M7.8M7.8

1931 M7.2M7.2

1917 M7.1M7.1

2002 M7.1M7.1

1909 M7.0M7.0

2001 M7.0M7.0

2010 M6.9M6.9

2008 M6.8M6.8

1935 M6.7M6.7

2014 M6.7M6.7

2005 M6.6M6.6

2010 M6.6M6.6

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.0 1970-09-16	1970-09-16 01:49	30 km	20 km SW of Merizo Village, Guam
M6.2 1970-03-04	1970-03-04 03:30	18 km	148 km SW of Merizo Village, Guam
M6.1 1967-09-08	1967-09-08 22:37	17 km	273 km N of Fais, Micronesia
M6.2 1967-08-26	1967-08-26 00:36	20 km	271 km N of Fais, Micronesia
M6.0 1965-04-24	1965-04-24 21:55	15 km	193 km N of Fais, Micronesia
M6.1 1964-03-26	1964-03-26 02:04	20 km	256 km NE of Fais, Micronesia
M6.2 1952-04-18	1952-04-18 15:59	17 km	195 km NNE of Fais, Micronesia
M6.2 1950-08-02	1950-08-02 10:50	15 km	283 km SW of Merizo Village, Guam
M6.2 1946-06-12	1946-06-12 16:08	25 km	121 km SSW of Merizo Village, Guam
M6.5 1943-03-15	1943-03-15 04:48	25 km	96 km ENE of Fais, Micronesia

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.