The Weekly Volcanic Activity Report: February 22 – 28, 2023
New activity/unrest was reported for 5 volcanoes from February 22 to 28, 2023. During the same period, ongoing activity was reported for 18 volcanoes.
Increased seismic activity under Trident volcano, Alaska
On February 22, 2023, the Alaska Volcano Observatory (AVO) raised the alert level of Trident Volcano to ADVISORY and the Aviation Color Code to YELLOW due to an increase in seismic activity beneath the volcano. The last eruption at this volcano was in 1974 (VEI 3).
Increased seismic activity under Aniakchak volcano, alerts raised, Alaska
The Alaska Volcano Observatory (AVO) has raised the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY for Aniakchak volcano on February 23, 2023, following an increase in seismic activity. The last eruption at this volcano took place in 1931 (VEI 4).
The Weekly Volcanic Activity Report: February 15 – 21, 2023
New activity/unrest was reported for 5 volcanoes from February 15 to 21, 2023. During the same period, ongoing activity was reported for 17 volcanoes.
The Weekly Volcanic Activity Report: February 8 – 14, 2023
New activity/unrest was reported for 5 volcanoes from February 8 to 14, 2023. During the same period, ongoing activity was reported for 18 volcanoes.
The Weekly Volcanic Activity Report: February 1 – 7, 2023
New activity/unrest was reported for 5 volcanoes from February 1 to 7, 2023. During the same period, ongoing activity was reported for 17 volcanoes.
The Weekly Volcanic Activity Report: January 25 – 31, 2023
New activity/unrest was reported for 7 volcanoes from January 25 – 31, 2023. During the same period, ongoing activity was reported for 18 volcanoes.
East Epi submarine volcano erupts for the first time since 2004, 10 km danger zone established, Vanuatu
A submarine volcano located near the island of Epi in Vanuatu started erupting at 18:30 UTC on January 31, 2023, prompting authorities to raise the Volcano Alert Level to 1 and establish a 10 km (6.2 miles) danger zone. This marks the first eruption of the volcano since 2004 (VEI 2).
Earthquake swarm under Asosan volcano, Alert Level raised, Japan
A seismic swarm started under the Asosan volcano in Japan on January 30, 2023, prompting the Japan Meteorological Agency (JMA) to raise the Volcanic Alert Level from 1 to 2.
Sequence of strong explosions at Stromboli volcano, Italy
An explosive sequence at the Stromboli volcano in Italy on January 30, 2023, caused the launch of coarse pyroclastic material at several hundred meters in height and produced an ash cloud that quickly dispersed southward.
