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Hunga Tonga-Hunga Ha'apai volcano

Updated: Mar 2, 2024 20:06 GMT -
Submarine volcano 149 m / 489 ft
Tonga, Tonga Islands, -20.57°S / -175.38°W
Current status: normal or dormant (1 out of 5)
Last update: 20 Dec 2022 (new bathymetry map of caldera)

The small islands of Hunga Tonga and Hunga Ha'apai cap a large seamount located about 30 km SSE of Falcon Island, approximately 65 km NW of Vuna Wharf, Nuku'alofa, and 70 km SW of Nomuka Island.

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Typical eruption style: unspecified
Hunga Tonga-Hunga Ha'apai volcano eruptions: 2022, 2021, 2014, 2009, 1988

Latest nearby earthquakes

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TimeMag. / DepthDistance/Location

Background

The two linear andesitic islands are about 2 km long and represent the western and northern remnants of the rim of a largely submarine caldera lying east and south of the islands. Hunga Tonga and Hunga Ha'apai reach an elevation of only 149 m and 128 m above sea level, respectively, and display inward-facing sea cliffs with lava and tephra layers dipping gently away from the submarine caldera. A rocky shoal 3.2 km SE of Hunga Ha'apai and 3 km south of Hunga Tonga marks the most prominent historically active vent. Several submarine eruptions have occurred at Hunga Tonga-Hunga Ha'apai since the first historical eruption in 1912.
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Smithsonian / GVP volcano information


See also: Sentinel hub | Landsat 8 | NASA FIRMS

Maps of Hunga Tonga-Hunga Ha'apai

The island of Hunga Tonga-Hunga Ha’apai before its massive eruption on 15 Jan 2022 (source: NASA Earth Observatory)
The island of Hunga Tonga-Hunga Ha'apai before its massive eruption on 15 Jan 2022 (source: NASA Earth Observatory)
Wed, 25 May 2022, 04:42

Hunga Tonga-Hunga Ha'apai volcano (Tonga): new bathymetry map of caldera

New bathymetry map of Hunga Tonga-Hunga Ha'apai volcano's caldera (image: Shane Cronin and Tonga Geological Services)
A new bathymetry map of the volcano's caldera has been released today. ... Read all
Wed, 23 Feb 2022, 18:46

Hunga Tonga-Hunga Ha'apai volcano (Tonga Ridge) - Smithsonian / USGS Weekly Volcanic Activity Report for 16 February-22 February 2022 (Continuing Activity)

Recovery efforts from the 14-15 January eruption of Hunga Tonga-Hunga Ha'apai continued in Tonga. According to a news article, the main undersea international fiber-optic communication cable that had been severed in multiple places due to the eruption had been repaired by 21 February, and internet connectivity was restored by 22 February. Repairs had begun on 3 February to rejoin 5-6 pieces and replace a 55 km section of the cable that was missing and likely buried in sediment. ... Read all
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