The July 1, 1911 earthquake

M6.5Near Morgan Hill, California

A magnitude 6.5 earthquake 6.2 miles deep, centred in Santa Clara County. The 30th strongest in California’s record since 1900, and the strongest within 50 miles in the catalogue, which runs from 1900.

The earthquake

Magnitude
6.5
moment magnitude (mw)
Depth
6.2 mi
10.0 km below the surface
Local time
Saturday, July 1, 1911
13:59 PST; 21:59 UTC
Epicentre
37.11°N, 121.64°W
In Santa Clara County
In California’s record
30th
strongest of 97,065 since 1900
Within 50 miles
11
counties; more on this date

USGS ANSS Comprehensive Earthquake Catalog, event iscgem16958150 (“Near Morgan Hill, 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

2,688 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: 301 301 1975: 210 1976: 86 1977: 63 1978: 51 1979: 80 1980: 61 1981: 45 1982: 69 1983: 34 1984: 80 1985: 40 1986: 100 1987: 29 1988: 61 1989: 252 1990: 100 1991: 49 1992: 30 1993: 26 1994: 34 1995: 65 1996: 36 1997: 31 1998: 40 1999: 30 2000: 26 2001: 52 2002: 34 2003: 29 2004: 49 2005: 15 2006: 18 2007: 27 2008: 22 2009: 29 2010: 26 2011: 25 2012: 18 2013: 12 2014: 18 2015: 11 2016: 20 2017: 32 2018: 23 2019: 19 2020: 28 2021: 25 2022: 27 2023: 27 2024: 24 2025: 39 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.