Portugal earthquakes in 1973
4 earthquakes of magnitude 4.5 or more were located in Portugal in 1973. The largest: M5.1 6 km S of São Roque do Pico, Portugal, Nov 23, 1973.
From the USGS catalog. Times are local to each quake.
Map
Where every quake of 1973 was located in Portugal. Select one for its page.
Every quake of 1973
Magnitude 4.5 and up, newest first.
Month by month
Counted by UTC date, which is how the catalog files them.
| Month | Quakes | Largest | Where |
|---|---|---|---|
| January 1973 | 1 | 4.5 | 258 km NE of Santa Cruz das Flores, Portugal |
| February 1973 | 0 | ||
| March 1973 | 0 | ||
| April 1973 | 0 | ||
| May 1973 | 0 | ||
| June 1973 | 0 | ||
| July 1973 | 0 | ||
| August 1973 | 0 | ||
| September 1973 | 0 | ||
| October 1973 | 0 | ||
| November 1973 | 1 | 5.1 | 6 km S of São Roque do Pico, Portugal |
| December 1973 | 2 | 5.0 | 22 km N of Horta, Portugal |
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.
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- 2000s2000200120022003200420052006200720082009
- 1990s1990199119921993199419951996199719981999
- 1980s1980198119821983198419851986198719881989
- 1970s1970197119721973197419751976197719781979
- 1960s1960196119621963196419651966196719681969
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- 1940s1940194119421943194419451946194719481949
- 1930s1930193119321933193419351936193719381939
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- 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.