California earthquakes in 1928
7 earthquakes of magnitude 2.5 or more were located in California in 1928. The largest: M5.2 9 km SW of Channel Islands Beach, California, Apr 18, 1928.
From the USGS catalog. Times are local to each quake.
Map
Where every quake of 1928 was located in California. Select one for its page.
Every quake of 1928
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 1928 | 1 | 4.6 | 1 km WSW of Gilroy, California |
| February 1928 | 0 | ||
| March 1928 | 0 | ||
| April 1928 | 2 | 5.2 | 9 km SW of Channel Islands Beach, California |
| May 1928 | 0 | ||
| June 1928 | 1 | 4.5 | 2 km NE of Weaverville, California |
| July 1928 | 0 | ||
| August 1928 | 1 | 4.8 | 1 km NNW of Buena Vista, California |
| September 1928 | 1 | 5.0 | 15 km SSE of Twentynine Palms, California |
| October 1928 | 1 | 5.0 | 11 km N of Seeley, California |
| November 1928 | 0 | ||
| December 1928 | 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.
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- 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.