Portugal earthquakes in 1984
6 earthquakes of magnitude 4.5 or more were located in Portugal in 1984. The largest: M5.3 Azores Islands region, Sep 9, 1984.
From the USGS catalog. Times are local to each quake.
Map
Where every quake of 1984 was located in Portugal. Select one for its page.
Every quake of 1984
Magnitude 4.5 and up, newest first.
- 5.3Azores Islands region · 10 km deep
- 4.5204 km SSW of Lajes das Flores, Portugal · 10 km deep
- 4.8106 km ESE of Santa Cruz das Flores, Portugal · 10 km deep
- 5.0194 km NE of Santa Cruz das Flores, Portugal · 10 km deep
- 4.9190 km NE of Santa Cruz das Flores, Portugal · 10 km deep
- 4.8192 km NE of Santa Cruz das Flores, Portugal · 10 km deep
Month by month
Counted by UTC date, which is how the catalog files them.
| Month | Quakes | Largest | Where |
|---|---|---|---|
| January 1984 | 0 | ||
| February 1984 | 0 | ||
| March 1984 | 3 | 5.0 | 194 km NE of Santa Cruz das Flores, Portugal |
| April 1984 | 0 | ||
| May 1984 | 1 | 4.8 | 106 km ESE of Santa Cruz das Flores, Portugal |
| June 1984 | 0 | ||
| July 1984 | 0 | ||
| August 1984 | 0 | ||
| September 1984 | 2 | 5.3 | Azores Islands region |
| October 1984 | 0 | ||
| November 1984 | 0 | ||
| December 1984 | 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.