The August 20, 1927 earthquake
M5.3near Trinidad, California
A magnitude 5.3 earthquake, 23.6 miles off Humboldt County. The 269th strongest in California’s record since 1900, and the strongest within 50 miles since a magnitude 6.0 on June 4, 1925.
The earthquake
- Magnitude
- 5.3
- as reported (uk)
- Depth
- —
- Not recorded
- Local time
- Saturday, August 20, 1927
- 12:05 PST; 20:05 UTC
- In California’s record
- 269th
- strongest of 97,065 since 1900
USGS ANSS Comprehensive Earthquake Catalog, event ushis772 (“38 km W of Trinidad, 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 · 23.6 mi
- Del Norte CountyCA · 42.5 mi
Earthquakes around the epicentre
2,136 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
- July 14, 1918M6.5
- April 23, 1906M6.4
- October 28, 1909M6.0
- June 4, 1925M6.0
- August 18, 1908M5.8
- April 28, 1923M5.6
- February 9, 1923M5.0
USGS ANSS Comprehensive Earthquake Catalog. Local time is the time zone of the county nearest the epicentre. Magnitudes are as the catalogue reports them.