New activity/unrest was reported for 4 volcanoes from December 1 to 7, 2021. During the same period, ongoing activity was reported for 15 volcanoes. New activity/unrest: Ambae, Vanuatu | Nyiragongo, DR Congo | Sangay, Ecuador | Semeru, Eastern Java (Indonesia)….
The Alaska Volcano Observatory (AVO) has observed a change from the long-term deformation pattern at Okmok volcano as measured by two continuous Global Navigation Satellite Systems (GNSS) stations within the caldera between September and November 2021. The…
The Icelandic Met Office (IMO) has raised to Aviation Color Code for Grímsvötn volcano from Yellow to Orange on December 6, one day after the glacial flood from Grímsvötn reached its peak discharge. By definition, the Aviation Color Code is…
At least 39 people have been killed, 12 are missing and 57 others have been injured after powerful eruption of Semeru volcano in the Indonesian province of East Java on Saturday, December 4, 2021. Nearly 3 000 houses and 38 schools were damaged. Saturday's…
A high-level eruption took place at Semeru volcano, East Java, Indonesia at around 08:20 UTC on Saturday, December 4, 2021. The Aviation Color Code was raised to Red. The eruption comes just two days after a high-level eruption at Sangay volcano, Ecuador.1 At 09:20…
Kesongo mud volcano in Central Java, Indonesia erupted around 08:00 LT on December 3, 2021, spreading mud over an area of approximately 2 ha (4.9 acres). According to media reports, the eruption lasted less than 5 minutes with a maximum height of mud jet about 15 m…
The ice sheet in Grímsvötn has subsided about 17 m (55.8 feet) from November 24 to December 2, 2021. This is about 9 days since it started subsiding and running water began to break its way under the glacier. The Meteorological Office's hydrologists…
A major explosive event was registered at Sangay volcano, Ecuador at 09:03 on December 2, 2021. The Washington VAAC is reporting volcanic ash rising up to possibly 15.2 km (50 000 feet) above sea level. Consequently, there is a possibility of ashfall in the areas…
The GPS meter in Grímsvötn shows that the ice cap continues to descend and it has sunk almost 9.87 m (32.4 feet) since it was measured highest on November 24, 2021, the Icelandic Meteorological Office (IMO) reports. Running water has now appeared in…
A sudden phreatic eruption took place at Pinatubo volcano, Philippines between 04:09 and 04:13 UTC (12:09 – 12:13 PHT) on November 30, 2021. The Tokyo VAAC reported a possible eruption at the volcano with ash observed rising up to 13.4 km (44 000 feet) above sea…
