Tofua Arc at 20.9°S
Tofua Arc at 20.9°S is a stratovolcano in Tonga-Kermadec Volcanic Regions, Tonga, rising to -296 m. Its most recent recorded eruption was in 2017.
About Tofua Arc at 20.9°S
An unnamed submarine volcano is located along the Tofua Volcanic Arc 35 km NW of the Niu Aunofo lighthouse on Tongatapu Island. The first documented eruptions took place in 1911 and 1923; an ephemeral island was formed in 1999. A submarine eruption in January 2017 produced discolored water visible in satellite imagery.
Eruption reports
Reports from GDACS and NASA EONET linked to this volcano.
No eruption reports in our records yet. New reports appear here automatically.
Earthquakes nearby, 30 days
Within about 50 km. Swarms of small quakes can sometimes accompany volcanic unrest.