The January 11, 1939 earthquake

M5.5California-Nevada border region

A magnitude 5.5 earthquake, centred in Lyon County. The 37th strongest in Nevada’s record since 1900, and the strongest within 50 miles since a magnitude 6.1 on June 25, 1933.

The earthquake

Magnitude
5.5
as reported (fa)
Depth
—
Not recorded
Local time
Wednesday, January 11, 1939
14:00 PST; 22:00 UTC
Epicentre
39.00°N, 119.20°W
In Lyon County
In Nevada’s record
37th
strongest of 8,110 since 1900
Within 50 miles
13
counties; more on this date

USGS ANSS Comprehensive Earthquake Catalog, event ushis1237 (“California-Nevada border region”). 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

832 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: 0 1974: 1 1975: 5 1976: 6 1977: 2 1978: 16 1979: 9 1980: 10 1981: 5 1982: 6 1983: 6 1984: 4 1985: 3 1986: 8 1987: 4 1988: 5 1989: 10 1990: 7 1991: 12 1992: 21 1993: 11 1994: 177 177 1995: 35 1996: 27 1997: 12 1998: 6 1999: 2 2000: 13 2001: 6 2002: 10 2003: 7 2004: 7 2005: 9 2006: 6 2007: 9 2008: 5 2009: 3 2010: 14 2011: 57 2012: 4 2013: 8 2014: 8 2015: 18 2016: 30 2017: 18 2018: 5 2019: 5 2020: 4 2021: 85 2022: 13 2023: 16 2024: 49 2025: 13 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.