Volcanos in Tonga

At 2 volcanos in Tonga there have been a total of 3 siginificant eruptions over the past 2000 years.

All 4 volcanos in Tonga are still considered as active. Additionally there are 4 active submarine volcanos.

Other natural hazards in Tonga:
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Significant volcanic eruptions in Tonga over the past 2000 years

The following list shows all volcanoes of the last 2000 years with significant damage. The column "VEI" stands for the volcano explosivity index, which represents the strength of the eruption from a geological point of view. This takes into account the height and volume of the rocks ejected. The scale ranges from 0-8, with the severity of the outbreak increasing tenfold with each value. For example, a VEI of 1 means that the volcano throws lava and rock masses of 100,000 to 1 million cubic metres up to 1 kilometre high. From VEI 8 a volcano is considered a super volcano. Here, more than 1000 cubic kilometers of tephra are thrown to altitudes of more than 25 kilometers.

The highest explosivity index in Tonga was reached in the review period at VEI 4 in 1886. The volcano Niuafo'ou The volcano Klaus threw tephramasses of at least 100 million cubic meters over 10 kilometers high. Volcanoes of this size do not normally erupt more frequently than every 10 years.

EruptionVolcanoVEIDeathsTotal damage

All volcanos in Tonga

VolcanoElevationStatusLast eruption
Tofua Island506 mActive
Niuafo'ou260 mActive
Leith Island518 mActive
Fonualei129 mActive

These statistics are based on datas from the Smithsonian Institution's Global Volcanism Program (GVP), and the Significant Volcanic Eruptions Database of the National Geophysical Data Center (NOAA) / World Data Service (NGDC/WDS) doi:10.7289/V5JW8BSH. Several data have been summarized and translated.