The December 18, 1967 earthquake

M5.3near Corralitos, California

A magnitude 5.3 earthquake 6.2 miles deep, centred in Santa Cruz County. The 294th strongest in California’s record since 1900, and the strongest within 50 miles since a magnitude 5.4 on September 14, 1963.

The earthquake

Magnitude
5.3
moment magnitude (mw)
Depth
6.2 mi
10.0 km below the surface
Local time
Monday, December 18, 1967
09:24 PST; 17:24 UTC
Epicentre
36.99°N, 121.84°W
In Santa Cruz County
In California’s record
294th
strongest of 97,065 since 1900
Within 50 miles
9
counties; more on this date

USGS ANSS Comprehensive Earthquake Catalog, event iscgem828529 (“2 km W of Corralitos, California”). The USGS event page carries the ShakeMap, felt reports and the official summary.

Counties and cities within 50 miles

Distance from the epicentre to each county boundary (zero when inside) and to each city centre.

Counties

Cities, largest first

Earthquakes around the epicentre

2,514 earthquakes of magnitude 3 or more within 50 miles of this epicentre since 1973.

Earthquakes of magnitude 3 or more within 50 miles of the epicentre, by year 1973: 10 1974: 270 270 1975: 185 1976: 78 1977: 56 1978: 51 1979: 74 1980: 49 1981: 41 1982: 69 1983: 28 1984: 88 1985: 40 1986: 100 1987: 30 1988: 57 1989: 251 1990: 99 1991: 48 1992: 29 1993: 25 1994: 30 1995: 63 1996: 36 1997: 29 1998: 39 1999: 30 2000: 24 2001: 52 2002: 27 2003: 21 2004: 40 2005: 15 2006: 18 2007: 25 2008: 21 2009: 29 2010: 23 2011: 24 2012: 18 2013: 9 2014: 17 2015: 4 2016: 21 2017: 31 2018: 23 2019: 17 2020: 26 2021: 20 2022: 25 2023: 27 2024: 24 2025: 28 19731978198319881993199820032008201320182023

Earlier earthquakes of magnitude 5 or more within 50 miles, strongest first

USGS ANSS Comprehensive Earthquake Catalog. Local time is the time zone of the county nearest the epicentre. Magnitudes are as the catalogue reports them.