The September 17, 1927 earthquake
M5.9near Mammoth Lakes, California
A magnitude 5.9 earthquake 9.3 miles deep, centred in Mono County. The 102nd strongest in California’s record since 1900, and the strongest within 50 miles since a magnitude 6.0 on May 6, 1910.
The earthquake
- Magnitude
- 5.9
- moment magnitude (mw)
- Depth
- 9.3 mi
- 15.0 km below the surface
- Local time
- Saturday, September 17, 1927
- 18:07 PST; 02:07 UTC on Sep 18, 1927
- In California’s record
- 102nd
- strongest of 97,065 since 1900
USGS ANSS Comprehensive Earthquake Catalog, event iscgem909524 (“8 km NNE of Mammoth Lakes, 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
- Mono CountyCA · inside
- Madera CountyCA · 7.9 mi
- Fresno CountyCA · 10.4 mi
- Tuolumne CountyCA · 16.1 mi
- Inyo CountyCA · 19.3 mi
- Mariposa CountyCA · 21.4 mi
- Mineral CountyNV · 29.9 mi
- Esmeralda CountyNV · 30.4 mi
- Lyon CountyNV · 48.4 mi
Earthquakes around the epicentre
3,882 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
- May 6, 1910M6.0
- January 4, 1912M5.5
USGS ANSS Comprehensive Earthquake Catalog. Local time is the time zone of the county nearest the epicentre. Magnitudes are as the catalogue reports them.