Puerto Rico earthquakes in 1977
1 earthquake of magnitude 2.5 or more was located in Puerto Rico in 1977. The largest: M5.2 70 km NNW of San Antonio, Puerto Rico, May 2, 1977.
From the USGS catalog. Times are local to each quake.
Map
Where every quake of 1977 was located in Puerto Rico. Select one for its page.
Every quake of 1977
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 1977 | 0 | ||
| February 1977 | 0 | ||
| March 1977 | 0 | ||
| April 1977 | 0 | ||
| May 1977 | 1 | 5.2 | 70 km NNW of San Antonio, Puerto Rico |
| June 1977 | 0 | ||
| July 1977 | 0 | ||
| August 1977 | 0 | ||
| September 1977 | 0 | ||
| October 1977 | 0 | ||
| November 1977 | 0 | ||
| December 1977 | 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.