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M6.6 earthquake, California Earthquake, 1987-11-24

MagnitudeM6.6mw

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Depth11 km

Time (UTC)1987-11-24 13:15

Rank in 198746 / 166among M6+

Rank since 19003511 / 14,458

Energy vs an M6×8approx.

The 1987 Superstition Hills, California Earthquake · 33.02, -115.85

M6.5+ within 300 km (largest first)

1992 M7.3M7.3

2010 M7.2M7.2

1999 M7.1M7.1

1940 M6.9M6.9

1956 M6.8M6.8

1918 M6.7M6.7

1994 M6.7M6.7

1942 M6.6M6.6

1968 M6.6M6.6

1971 M6.6M6.6

1903 M6.6M6.6

1987 M6.6M6.6

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.2 1987-11-24	1987-11-24 01:54	11 km	The 1987 Elmore Ranch, California Earthquake
M6.0 1986-07-08	1986-07-08 09:20	9 km	The 1986 North Palm Springs, California Earthquake
M6.3 1980-06-09	1980-06-09 03:28	6 km	5km SE of Alberto Oviedo Mota, B.C., MX
M6.4 1979-10-15	1979-10-15 23:16	15 km	The 1979 Imperial Valley Earthquake, California-Baja California
M6.6 1971-02-09	1971-02-09 14:00	9 km	1971 San Fernando Earthquake, California
M6.0 1969-03-21	1969-03-21 04:56	10 km	47 km ENE of San Felipe, Mexico
M6.6 1968-04-09	1968-04-09 02:28	10 km	The 1968 Borrego Mountain, California Earthquake
M6.5 1966-08-07	1966-08-07 17:36	10 km	6 km S of Golfo de Santa Clara, Mexico
M6.5 1956-02-15	1956-02-15 01:20	6 km	120km ESE of Maneadero, B.C., MX
M6.4 1956-02-14	1956-02-14 18:33	6 km	129km SE of Maneadero, B.C., MX

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.