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Tonga earthquakes in 1949

4 earthquakes of magnitude 4.5 or more were located in Tonga in 1949. The largest: M6.9 65 km SW of Neiafu, Tonga, Aug 6, 1949.

From the USGS catalog. Times are local to each quake.

19481950

Map

Where every quake of 1949 was located in Tonga. Select one for its page.

Open the live map with earthquakes

Every quake of 1949

Magnitude 4.5 and up, newest first.

Month by month

Counted by UTC date, which is how the catalog files them.

MonthQuakesLargestWhere
January 19490
February 194916.4126 km NE of Hihifo, Tonga
March 19490
April 19490
May 19490
June 19490
July 19490
August 194916.965 km SW of Neiafu, Tonga
September 194916.4283 km SSW of ‘Ohonua, Tonga
October 19490
November 194916.7127 km NE of Neiafu, Tonga
December 19490

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.

Nearby

Tonga nowWorldwide in 1949

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.