Costa Rica earthquakes in 1977
7 earthquakes of magnitude 4.5 or more were located in Costa Rica in 1977. The largest: M4.9 5 km SE of Naranjo, Costa Rica, Apr 7, 1977.
From the USGS catalog. Times are local to each quake.
Map
Where every quake of 1977 was located in Costa Rica. Select one for its page.
Every quake of 1977
Magnitude 4.5 and up, newest first.
- 4.839 km S of Jacó, Costa Rica · 59 km deep
- 4.510 km NNW of Jacó, Costa Rica · 52 km deep
- 4.831 km SSW of La Cruz, Costa Rica · 71 km deep
- 4.714 km WSW of Santa Cruz, Costa Rica · 27 km deep
- 4.5211 km SSW of Quepos, Costa Rica · 15 km deep
- 4.95 km SE of Naranjo, Costa Rica · 33 km deep
- 4.61 km SE of Jacó, Costa Rica · 48 km deep
Month by month
Counted by UTC date, which is how the catalog files them.
| Month | Quakes | Largest | Where |
|---|---|---|---|
| January 1977 | 0 | ||
| February 1977 | 0 | ||
| March 1977 | 0 | ||
| April 1977 | 2 | 4.9 | 5 km SE of Naranjo, Costa Rica |
| May 1977 | 1 | 4.5 | 211 km SSW of Quepos, Costa Rica |
| June 1977 | 1 | 4.7 | 14 km WSW of Santa Cruz, Costa Rica |
| July 1977 | 0 | ||
| August 1977 | 0 | ||
| September 1977 | 0 | ||
| October 1977 | 0 | ||
| November 1977 | 2 | 4.8 | 31 km SSW of La Cruz, Costa Rica |
| December 1977 | 1 | 4.8 | 39 km S of Jacó, Costa Rica |
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.