New eruptive fissure vent opens at Etna, Italy
A new eruptive fissure event opened at the northeastern base of Etna’s SE crater on November 27, 2022. The vent was first seen at around 17:00 UTC when persistent cloud coverage thinned.
Significant underwater gas emissions at Nishinoshima volcano, Japan
Satellites are registering significant underwater gas emissions at Nishinoshima volcano, Japan following increased eruptive activity at the volcano that started in September 2022. The activity at the volcano further intensified on October 2 and 3.
The fullest investigation of the massive Hunga Tonga-Hunga Ha’apai eruption to date
In January 2022, Hunga-Tonga Hunga-Ha’apai (HT-HH) emitted the biggest atmospheric explosion recorded on Earth in more than 100 years. Several months after the eruption, a New Zealand-led team has completed the fullest investigation to date into the eruption of this underwater Tongan volcano.
Earthquake swarm under Takawangha volcano, Aviation Color Code raised to Yellow, Alaska
Seismic activity under Takawangha volcano, Alaska increased over the past couple of days and intensified on November 18, 2022, forcing the Alaska Volcano Observatory (AVO) to raise the Aviation Color Code to Yellow and the Volcano Alert Level to Advisory.
The Weekly Volcanic Activity Report: November 9 – 15, 2022
New activity/unrest was reported for 4 volcanoes from November 9 to 15, 2022. During the same period, ongoing activity was reported for 28 volcanoes.
Small earthquakes and ground deformation continue at Taupo volcano, New Zealand
Minor volcanic unrest continues at New Zealand’s Taupō volcano, as shown by continued small earthquakes and ground deformation. The Volcanic Alert Level remains at 1.
Etna showing signs of renewed unrest, Italy
Etna showed signs of increased unrest on November 15, 2022, forcing the Etna Volcano Observatory to raise the Aviation Color Code for the volcano from Green to Yellow. It was lowered back to Green at 10:20 UTC on November 16 after geophysical parameters returned to background levels.
New lava flow forms on Stromboli volcano, Italy
A new lava flow formed on Stromboli volcano, Italy on November 16, 2022. The activity follows major explosive eruptions at the end of September and significant pyroclastic flows in October.
Submarine volcanic activity in the Ahyi seamount area, Northern Mariana Islands
A submarine volcanic activity appears to be taking place in the Ahyi seamount volcano area, the Northern Mariana Islands since mid-October 2022. The last eruption at this volcano took place in 2014.
The Weekly Volcanic Activity Report: November 2 – 8, 2022
New activity/unrest was reported for 4 volcanoes from November 2 to 8, 2022. During the same period, ongoing activity was reported for 20 volcanoes.
