Iceland vs Tonga: Number of significant volcanic eruptions

Iceland

1 events

in 2023

Tonga

1 events

in 2022

Iceland rank

6th

Tonga rank

6th

Number of significant volcanic eruptions over time

Iceland
Tonga

How they compare

Iceland currently reports 1 events against 1 events in Tonga, a difference of 0 events.

Iceland ranks 6th and Tonga ranks 6th of 25 countries.

Individual pages

Number of significant volcanic eruptions in Iceland
Number of significant volcanic eruptions in Tonga
Full country ranking

About this data

Indicator: Number of significant volcanic eruptions
Unit: events
Source: National Geophysical Data Center / World Data Service (2025) – with major processing by Our World in Data
Licence: CC BY 4.0 (Our World in Data)
Coverage: 25 places, 619 data points, 1050–2024
Last refreshed: 07 August 2026

A significant eruption is classified as one that meets at least one of the following criteria: caused fatalities, caused moderate damage (approximately $1 million or more), with a Volcanic Explosivity Index (VEI) of 6 or larger, caused a tsunami, or was associated with a major earthquake.