The September 22, 1952 earthquake
M6.0near Shelter Cove, California
A magnitude 6.0 earthquake 9.3 miles deep, centred in Humboldt County. The 65th strongest in California’s record since 1900, and the strongest within 50 miles since a magnitude 6.0 on October 7, 1951.
The earthquake
- Magnitude
- 6.0
- moment magnitude (mw)
- Depth
- 9.3 mi
- 15.0 km below the surface
- Local time
- Monday, September 22, 1952
- 04:41 PDT; 11:41 UTC
- In California’s record
- 65th
- strongest of 97,065 since 1900
USGS ANSS Comprehensive Earthquake Catalog, event iscgem893449 (“31 km NW of Shelter Cove, 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
- Humboldt CountyCA · inside
- Mendocino CountyCA · 22.5 mi
- Trinity CountyCA · 44.8 mi
Earthquakes around the epicentre
2,309 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
- January 22, 1923M7.1
- October 3, 1941M6.5
- June 6, 1932M6.5
- October 7, 1951M6.0
- March 18, 1910M6.0
- October 28, 1909M6.0
- December 20, 1940M6.0
- September 9, 1931M5.9
- February 6, 1937M5.9
- September 11, 1938M5.8
USGS ANSS Comprehensive Earthquake Catalog. Local time is the time zone of the county nearest the epicentre. Magnitudes are as the catalogue reports them.