Saint Helena earthquakes in 1964
6 earthquakes of magnitude 4.5 or more were located in Saint Helena in 1964. The largest: M5.7 249 km ENE of Georgetown, Saint Helena, Mar 29, 1964.
From the USGS catalog. Times are local to each quake.
Map
Where every quake of 1964 was located in Saint Helena. Select one for its page.
Every quake of 1964
Magnitude 4.5 and up, newest first.
Month by month
Counted by UTC date, which is how the catalog files them.
| Month | Quakes | Largest | Where |
|---|---|---|---|
| January 1964 | 1 | 5.6 | north of Ascension Island |
| February 1964 | 0 | ||
| March 1964 | 3 | 5.7 | 249 km ENE of Georgetown, Saint Helena |
| April 1964 | 0 | ||
| May 1964 | 0 | ||
| June 1964 | 1 | 5.6 | Ascension Island region |
| July 1964 | 1 | 5.4 | north of Ascension Island |
| August 1964 | 0 | ||
| September 1964 | 0 | ||
| October 1964 | 0 | ||
| November 1964 | 0 | ||
| December 1964 | 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.