Saint Helena earthquakes in 1939
2 earthquakes of magnitude 4.5 or more were located in Saint Helena in 1939. The largest: M6.2 north of Ascension Island, Apr 23, 1939.
From the USGS catalog. Times are local to each quake.
Map
Where every quake of 1939 was located in Saint Helena. Select one for its page.
Every quake of 1939
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 1939 | 0 | ||
| February 1939 | 0 | ||
| March 1939 | 0 | ||
| April 1939 | 1 | 6.2 | north of Ascension Island |
| May 1939 | 1 | 5.7 | north of Ascension Island |
| June 1939 | 0 | ||
| July 1939 | 0 | ||
| August 1939 | 0 | ||
| September 1939 | 0 | ||
| October 1939 | 0 | ||
| November 1939 | 0 | ||
| December 1939 | 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.