California earthquakes in 1930
18 earthquakes of magnitude 2.5 or more were located in California in 1930. The largest: M5.3 1 km SW of Las Flores, California, Aug 30, 1930.
From the USGS catalog. Times are local to each quake.
Map
Where every quake of 1930 was located in California. Select one for its page.
Every quake of 1930
Magnitude 2.5 and up, newest first.
- 4.61 km NE of Samoa, California
- 4.82 km E of Rio Dell, California
- 4.57 km WSW of Indianola, California
- 4.512 km ESE of Leggett, California
- 5.03 km SSE of McKinleyville, California
- 5.036 km W of Shelter Cove, California
- 4.513 km S of Round Mountain, California
- 5.01 km NE of Samoa, California
- 5.31 km SW of Las Flores, California · 15 km deep
- 5.010 km NE of Toro Canyon, California
- 4.723 km SW of Inyokern, California
- 4.53 km NE of Brawley, California
- 4.53 km NE of Brawley, California
- 5.03 km NE of Brawley, California
- 5.14 km SSE of Big Bear Lake, California
- 5.34 km SSE of Big Bear Lake, California
- 4.56 km SE of San Juan Bautista, California
- 4.56 km SE of San Juan Bautista, California
Month by month
Counted by UTC date, which is how the catalog files them.
| Month | Quakes | Largest | Where |
|---|---|---|---|
| January 1930 | 4 | 5.3 | 4 km SSE of Big Bear Lake, California |
| February 1930 | 1 | 5.0 | 3 km NE of Brawley, California |
| March 1930 | 2 | 4.5 | 3 km NE of Brawley, California |
| April 1930 | 0 | ||
| May 1930 | 0 | ||
| June 1930 | 0 | ||
| July 1930 | 1 | 4.7 | 23 km SW of Inyokern, California |
| August 1930 | 2 | 5.3 | 1 km SW of Las Flores, California |
| September 1930 | 1 | 5.0 | 1 km NE of Samoa, California |
| October 1930 | 1 | 4.5 | 13 km S of Round Mountain, California |
| November 1930 | 0 | ||
| December 1930 | 6 | 5.0 | 3 km SSE of McKinleyville, California |
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.