Undersea eruption of Hunga Tonga-Hunga Ha’apai sends ash up to 6 km a.s.l.
An undersea volcano Hunga Tonga-Hunga Ha'apai, located about 60 km (40 miles) north of Tongatapu, Tonga began erupting in late December 2014. On January 6, 2015, Wellington VAAC said observed volcanic ash is reaching an altitude of 6 km.The two small volcanic