Available Weekly Reports
There are no activity reports for Niuafo'ou.
Summary of eruption dates and Volcanic Explosivity Indices (VEI).
|Start Date||Stop Date||Eruption Certainty||VEI||Evidence||Activity Area or Unit|
|1985 Mar 21||1985 Mar 22||Confirmed||0||Historical||NE part of caldera lake (Vai Lahi)|
|[ 1959 ]||[ Unknown ]||Uncertain|
|[ 1947 Jan ]||[ Unknown ]||Uncertain|
|1946 Sep 9||1946 Sep 17||Confirmed||2||Historical||North flank|
|1943 Sep 26||1943 Oct 16 ± 30 days||Confirmed||2||Historical||SW flank|
|1935 Dec 7||1936 Feb (?)||Confirmed||2||Historical||South flank|
|1929 Jul 25||1929 Jul 26||Confirmed||2||Historical||West flank|
|1912 Oct 15 ± 5 days||Unknown||Confirmed||2||Historical||West side, near Alele 'Uta village|
|1886 Aug 31||1886 Sep 18 (?)||Confirmed||4||Historical||NE side of caldera|
|1867 Apr 12||Unknown||Confirmed||1||Historical||SSW flank|
|1853 Jun 24||1853 Jun 24 (?)||Confirmed||0||Historical||SW caldera rim (Ahau village area)|
|1814||Unknown||Confirmed||2||Historical||South end of caldera ?|
Niuafo'ou ("Tin Can Island") is a low, 8-km-wide island that forms the summit of a largely submerged basaltic shield volcano. Niuafo'ou is an isolated volcanic island in the north central Lau Basin about 170 km west of the northern end of the Tofua volcanic arc. The circular island encloses a 5-km-wide caldera that is mostly filled by a lake whose bottom extends to below sea level. The inner walls of the caldera drop sharply to the caldera lake, named Big Lake (or Vai Lahi), which contains several small islands and pyroclastic cones on its NE shore. Historical eruptions, mostly from circumferential fissures on the west-to-south side of the island, have been recorded since 1814 and have often damaged villages on this small ring-shaped island. A major eruption at Niuafo'ou in 1946 forced evacuation of most of its 1200 inhabitants.