The August 29, 1941 earthquake

M5.5near Denio, Nevada

A magnitude 5.5 earthquake, centred in Humboldt County. The 37th strongest in Nevada’s record since 1900, and the strongest within 50 miles in the catalogue, which runs from 1900.

The earthquake

Magnitude: 5.5; surface-wave magnitude (ms)
Depth: —; Not recorded
Local time: Friday, August 29, 1941; 05:09 PST; 13:09 UTC
Epicentre: 41.50°N, 118.50°W; In Humboldt County
In Nevada’s record: 37th; strongest of 8,110 since 1900
Within 50 miles: 5; counties; more on this date

USGS ANSS Comprehensive Earthquake Catalog, event ushis1369 (“55 km SSE of Denio, 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
Malheur CountyOR · 37.7 mi
Harney CountyOR · 37.7 mi
Pershing CountyNV · 40.1 mi
Washoe CountyNV · 42.1 mi

Earthquakes around the epicentre

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

No earlier earthquake of magnitude 5 or more within 50 miles in the catalogue since 1900.

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