Search
Menu

Explore

Hazards

Analysis

Rankings

Reference

The January 1, 1927 earthquake

M6.1near Rumorosa, Mexico, California

A magnitude 6.1 earthquake 6.2 miles deep, 37.9 miles off San Diego County. The 62nd strongest in California’s record since 1900, and the strongest within 50 miles in the catalogue, which runs from 1900.

The earthquake

Magnitude
6.1
moment magnitude (mw)
Depth
6.2 mi
10.0 km below the surface
Local time
Saturday, January 1, 1927
01:13 PST; 09:13 UTC
Epicentre
32.15°N, 115.76°W
37.9 mi from San Diego County
In California’s record
62nd
strongest of 97,065 since 1900
Within 50 miles
2
counties; more on this date

USGS ANSS Comprehensive Earthquake Catalog, event iscgemsup909038 (“49 km SSE of Rumorosa, Mexico”). 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

3,216 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: 19 1974: 21 1975: 31 1976: 71 1977: 37 1978: 45 1979: 50 1980: 48 1981: 8 1982: 9 1983: 18 1984: 41 1985: 17 1986: 41 1987: 61 1988: 62 1989: 52 1990: 23 1991: 30 1992: 17 1993: 53 1994: 16 1995: 12 1996: 9 1997: 29 1998: 26 1999: 45 2000: 37 2001: 23 2002: 87 2003: 17 2004: 29 2005: 33 2006: 79 2007: 34 2008: 117 2009: 86 2010: 1,339 1,339 2011: 100 2012: 67 2013: 43 2014: 16 2015: 18 2016: 16 2017: 16 2018: 16 2019: 13 2020: 17 2021: 28 2022: 9 2023: 26 2024: 47 2025: 12 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.