Home › 1942 › California Earthquake

M6.6 earthquake, California Earthquake, 1942-10-21

MagnitudeM6.6mw

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.

Depth6 km

Time (UTC)1942-10-21 16:22

Rank in 194224 / 99among M6+

Rank since 19003413 / 14,458

Energy vs an M6×8approx.

The 1942 Fish Creek Mountains, California Earthquake · 32.98, -115.79

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

1968 M6.6M6.6

1971 M6.6M6.6

1987 M6.6M6.6

1903 M6.6M6.6

1942 M6.6M6.6

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.0 1940-12-07	1940-12-07 22:17	6 km	126km S of Estacion Coahuila, B.C., MX
M6.9 1940-05-19	1940-05-19 04:36	6 km	The 1940 Imperial Valley, California Earthquake
M6.0 1937-03-25	1937-03-25 16:49	6 km	16km WSW of Oasis, CA
M6.4 1934-12-31	1934-12-31 18:45	6 km	5km S of Alberto Oviedo Mota, B.C., MX
M6.3 1934-12-30	1934-12-30 13:52	6 km	24km SSE of Estacion Coahuila, B.C., MX
M6.4 1933-03-11	1933-03-11 01:54	6 km	The 1933 Long Beach, California Earthquake
M6.1 1927-01-01	1927-01-01 09:13	10 km	49 km SSE of Rumorosa, Mexico
M6.2 1923-07-23	1923-07-23 07:30	5 km	3 km SE of San Bernardino, California
M6.7 1918-04-21	1918-04-21 22:32	10 km	The 1918 San Jacinto, California Earthquake
M6.6 1915-11-21	1915-11-21 00:13	10 km	Baja California-Sonora Border Region, Mexico

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.