Puerto Rico earthquakes in 1978
1 earthquake of magnitude 2.5 or more was located in Puerto Rico in 1978. The largest: M4.7 43 km NW of San Antonio, Puerto Rico, May 15, 1978.
From the USGS catalog. Times are local to each quake.
Map
Where every quake of 1978 was located in Puerto Rico. Select one for its page.
Every quake of 1978
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 1978 | 0 | ||
| February 1978 | 0 | ||
| March 1978 | 0 | ||
| April 1978 | 0 | ||
| May 1978 | 1 | 4.7 | 43 km NW of San Antonio, Puerto Rico |
| June 1978 | 0 | ||
| July 1978 | 0 | ||
| August 1978 | 0 | ||
| September 1978 | 0 | ||
| October 1978 | 0 | ||
| November 1978 | 0 | ||
| December 1978 | 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.