The October 22, 1916 earthquake
M6.0Tejon Pass, California
A magnitude 6.0 earthquake, centred in Kern County. The 86th strongest in California’s record since 1900, and the strongest within 50 miles in the catalogue, which runs from 1900. 1 aftershock of magnitude 2.5 or more followed within 30 days.
The earthquake
- Magnitude
- 6.0
- moment magnitude (mw)
- Depth
- —
- Not recorded
- Local time
- Sunday, October 22, 1916
- 18:44 PST; 02:44 UTC on Oct 23, 1916
- In California’s record
- 86th
- strongest of 97,065 since 1900
USGS ANSS Comprehensive Earthquake Catalog, event ushis601 (“Tejon Pass, California”). The USGS event page carries the ShakeMap, felt reports and the official summary.
Aftershocks
Earthquakes of magnitude 2.5 or more within 20 miles of the epicentre in the 30 days after.
1
Aftershocks in 30 days
5.5
Largest aftershock, Oct 23, 1916 · its page
1
On the first day
0
In the 7 days before
- The search radius is the surface rupture length expected for an earthquake of this magnitude (Wells and Coppersmith, 1994), at least 20 and at most 600 miles, so a great earthquake's sequence is counted along its whole fault.
- Before the modern seismic networks of the 1970s many small aftershocks went unrecorded, so early sequences read short.
Counties and cities within 50 miles
Distance from the epicentre to each county boundary (zero when inside) and to each city centre.
Counties
- Kern CountyCA · inside
- Los Angeles CountyCA · 5.7 mi
- Ventura CountyCA · 7.5 mi
- Santa Barbara CountyCA · 30.8 mi
- San Luis Obispo CountyCA · 32.4 mi
Cities, largest first
- BakersfieldCA · 32.3 mi
- Santa ClaritaCA · 40.4 mi
- LancasterCA · 43.5 mi
- PalmdaleCA · 49.9 mi
- Simi ValleyCA · 44.6 mi
- Thousand OaksCA · 48.9 mi
- VenturaCA · 48.1 mi
- CamarilloCA · 47.5 mi
- MoorparkCA · 42.4 mi
- Santa PaulaCA · 38.8 mi
- ShafterCA · 43.5 mi
- San FernandoCA · 49.8 mi
Earthquakes around the epicentre
977 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
- December 23, 1905M5.8
- January 6, 1905M5.0
USGS ANSS Comprehensive Earthquake Catalog. Local time is the time zone of the county nearest the epicentre. Magnitudes are as the catalogue reports them.