The July 3, 1961 earthquake

M5.4near Imlay, Nevada

A magnitude 5.4 earthquake, centred in Humboldt County. The 51st strongest in Nevada’s record since 1900, and the strongest within 50 miles since a magnitude 5.5 on August 29, 1941.

The earthquake

Magnitude: 5.4; local magnitude (ml)
Depth: —; Not recorded
Local time: Monday, July 3, 1961; 21:56 PDT; 04:56 UTC on Jul 4, 1961
Epicentre: 40.90°N, 118.40°W; In Humboldt County
In Nevada’s record: 51st; strongest of 8,110 since 1900
Within 50 miles: 3; counties; more on this date

USGS ANSS Comprehensive Earthquake Catalog, event ushis2501 (“33 km NW of Imlay, Nevada”). 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

Humboldt CountyNV · inside
Pershing CountyNV · 20.4 mi
Washoe CountyNV · 47.6 mi

Earthquakes around the epicentre

23 earthquakes of magnitude 3 or more within 50 miles of this epicentre since 1973.

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

February 2, 1916M5.9
August 29, 1941M5.5

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