California earthquakes in 1917
6 earthquakes of magnitude 2.5 or more were located in California in 1917. The largest: M6.4 off the coast of Northern California, Jun 9, 1917.
From the USGS catalog. Times are local to each quake.
Map
Where every quake of 1917 was located in California. Select one for its page.
Every quake of 1917
Magnitude 2.5 and up, newest first.
Month by month
Counted by UTC date, which is how the catalog files them.
| Month | Quakes | Largest | Where |
|---|---|---|---|
| January 1917 | 0 | ||
| February 1917 | 0 | ||
| March 1917 | 1 | 4.6 | Near Eureka, California |
| April 1917 | 1 | 4.5 | Santa Barbara Channel, California |
| May 1917 | 1 | 5.5 | Near Holtville, California |
| June 1917 | 1 | 6.4 | off the coast of Northern California |
| July 1917 | 1 | 4.8 | Near Santa Maria, California |
| August 1917 | 0 | ||
| September 1917 | 0 | ||
| October 1917 | 1 | 4.0 | Near San Jose, California |
| November 1917 | 0 | ||
| December 1917 | 0 |
What this means
The catalog is only as complete as the instruments of the time. Worldwide coverage of magnitude 5 and up dates from the 1960s, and of 4.5 from the 1990s; earlier years hold the large quakes and the ones near a station, so a low count in an early year means fewer instruments, not a quiet earth.
By year
Every year the USGS catalog covers.
- 2020s2020202120222023202420252026
- 2010s2010201120122013201420152016201720182019
- 2000s2000200120022003200420052006200720082009
- 1990s1990199119921993199419951996199719981999
- 1980s1980198119821983198419851986198719881989
- 1970s1970197119721973197419751976197719781979
- 1960s1960196119621963196419651966196719681969
- 1950s1950195119521953195419551956195719581959
- 1940s1940194119421943194419451946194719481949
- 1930s1930193119321933193419351936193719381939
- 1920s1920192119221923192419251926192719281929
- 1910s1910191119121913191419151916191719181919
- 1900s1900190119021903190419051906190719081909
Nearby
Sources
Earthquakes, magnitudes, depths, shaking estimates and felt reports from the U.S. Geological Survey Earthquake Hazards Program, read from its live feeds and its catalog back to 1900. Tsunami messages from NOAA’s tsunami warning centers.