Tonga earthquakes in 1968
19 earthquakes of magnitude 4.5 or more were located in Tonga in 1968. The largest: M6.5 30 km SSW of Hihifo, Tonga, Mar 10, 1968.
From the USGS catalog. Times are local to each quake.
Map
Where every quake of 1968 was located in Tonga. Select one for its page.
Every quake of 1968
Magnitude 4.5 and up, newest first.
- 5.8291 km WNW of Haveluloto, Tonga · 377 km deep
- 5.6south of Tonga · 23 km deep
- 6.4211 km WNW of Hihifo, Tonga · 25 km deep
- 5.8134 km ENE of Hihifo, Tonga · 15 km deep
- 5.9159 km SE of Hihifo, Tonga · 15 km deep
- 5.9186 km NW of Hihifo, Tonga · 15 km deep
- 6.1194 km NW of Hihifo, Tonga · 10 km deep
- 5.5184 km WNW of Hihifo, Tonga · 25 km deep
- 6.1166 km W of Haveluloto, Tonga · 249 km deep
- 5.9185 km WNW of Hihifo, Tonga · 37 km deep
- 5.773 km WSW of Pangai, Tonga · 97 km deep
- 5.9120 km SSE of ‘Ohonua, Tonga · 13 km deep
- 6.3129 km S of ‘Ohonua, Tonga · 50 km deep
- 5.595 km NE of Hihifo, Tonga · 65 km deep
- 6.296 km NE of Hihifo, Tonga · 40 km deep
- 6.0114 km NE of Hihifo, Tonga · 10 km deep
- 6.3124 km ENE of Hihifo, Tonga · 17 km deep
- 6.530 km SSW of Hihifo, Tonga · 109 km deep
- 6.3135 km NW of Hihifo, Tonga · 13 km deep
Month by month
Counted by UTC date, which is how the catalog files them.
| Month | Quakes | Largest | Where |
|---|---|---|---|
| January 1968 | 1 | 6.3 | 135 km NW of Hihifo, Tonga |
| February 1968 | 0 | ||
| March 1968 | 1 | 6.5 | 30 km SSW of Hihifo, Tonga |
| April 1968 | 3 | 6.3 | 124 km ENE of Hihifo, Tonga |
| May 1968 | 0 | ||
| June 1968 | 0 | ||
| July 1968 | 3 | 6.3 | 129 km S of ‘Ohonua, Tonga |
| August 1968 | 1 | 5.7 | 73 km WSW of Pangai, Tonga |
| September 1968 | 2 | 6.1 | 166 km W of Haveluloto, Tonga |
| October 1968 | 3 | 6.1 | 194 km NW of Hihifo, Tonga |
| November 1968 | 3 | 6.4 | 211 km WNW of Hihifo, Tonga |
| December 1968 | 2 | 5.8 | 291 km WNW of Haveluloto, Tonga |
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
- 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.