Saint Helena earthquakes in 1980
16 earthquakes of magnitude 4.5 or more were located in Saint Helena in 1980. The largest: M5.4 Ascension Island region, Oct 16, 1980.
From the USGS catalog. Times are local to each quake.
Map
Where every quake of 1980 was located in Saint Helena. Select one for its page.
Every quake of 1980
Magnitude 4.5 and up, newest first.
- 5.2north of Ascension Island · 10 km deep
- 5.4Ascension Island region · 10 km deep
- 4.8Ascension Island region · 10 km deep
- 4.8north of Ascension Island · 10 km deep
- 4.6north of Ascension Island · 10 km deep
- 4.9Tristan da Cunha region · 10 km deep
- 4.9north of Ascension Island · 10 km deep
- 4.8north of Ascension Island · 10 km deep
- 5.1Tristan da Cunha region · 10 km deep
- 5.1287 km SSE of Georgetown, Saint Helena · 10 km deep
- 4.9north of Ascension Island · 10 km deep
- 4.8224 km E of Georgetown, Saint Helena · 10 km deep
- 5.0north of Ascension Island · 10 km deep
- 4.9north of Ascension Island · 10 km deep
- 5.1north of Ascension Island · 10 km deep
- 5.1north of Ascension Island · 10 km deep
Month by month
Counted by UTC date, which is how the catalog files them.
| Month | Quakes | Largest | Where |
|---|---|---|---|
| January 1980 | 4 | 5.1 | north of Ascension Island |
| February 1980 | 0 | ||
| March 1980 | 3 | 5.1 | 287 km SSE of Georgetown, Saint Helena |
| April 1980 | 1 | 5.1 | Tristan da Cunha region |
| May 1980 | 0 | ||
| June 1980 | 2 | 4.9 | north of Ascension Island |
| July 1980 | 3 | 4.9 | Tristan da Cunha region |
| August 1980 | 1 | 4.8 | Ascension Island region |
| September 1980 | 0 | ||
| October 1980 | 1 | 5.4 | Ascension Island region |
| November 1980 | 1 | 5.2 | north of Ascension Island |
| December 1980 | 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.