The Weekly Volcanic Activity Report: November 23 – 29, 2022
New activity/unrest was reported for 6 volcanoes from November 23 to 29, 2022. During the same period, ongoing activity was reported for 17 volcanoes.
Mauna Loa eruption – Lava flow crosses Mauna Loa Weather Observatory Road
The eruption of Mauna Loa volcano that started on November 28, 2022, in its Northeast Rift Zone continues, with several fissures and lava flows active.
Strong and shallow M5.6 earthquake, numerous aftershocks at Taupō volcano, New Zealand
Seismic unrest continues at Taupō volcano, New Zealand, with a strong and shallow M5.6 earthquake registered on November 30, 2022. The Volcanic Alert Level for Taupō volcano was increased to Level 1 on September 20, 2022. This was based on ongoing earthquakes and deformation at levels above typical background since May.
Unrest observed at Ahyi Seamount, Aviation Color Code raised to Yellow, Northern Mariana Islands
Satellite and remote geophysical data show signs of unrest at Ahyi Seamount, Northern Mariana Islands, prompting the USGS to raise the Aviation Color Code to Yellow and the Volcano Alert Level to Advisory on November 28, 2022.
Sentinel-2 satellite views erupting Mauna Loa volcano, Hawai’i
Mauna Loa started erupting at around 09:30 UTC on November 28, 2022 (23:30 LT on November 27) in Moku‘āweoweo, the summit caldera of Mauna Loa, inside Hawai‘i Volcanoes National Park. Mauna Loa is the largest active volcano on our planet. Its last eruption took place in 1984 (VEI 0).
Increased eruptive activity at Cotopaxi – one of the world’s most dangerous volcanoes, Ecuador
Activity at Ecuador’s Cotopaxi — one of the world’s most dangerous volcanoes — volcano increased during the afternoon hours of November 25, 2022, when the seismic network started detecting tremors associated with strong gas and vapor emissions.
Eruption begins at Mauna Loa volcano after 38 years of quiescence – Aviation Color Code raised to Red, Hawai’i
A new eruption has begun at Mauna Loa — the largest active volcano on our planet — on November 28, 2022. As a result, the Aviation Color Code was raised to Red. The last eruption at this volcano took place in 1984 (VEI 0).
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.
