New eruptive phase starts at Fuego volcano, ashfall reported

New eruptive phase starts at Fuego volcano, ashfall reported

A change in the pattern of activity at Fugo volcano, Guatemala has been observed on December 10, 2017, developing into the 12th effusive eruption phase of the year. The Fuego Observatory reports moderately strong explosions which generate ash columns to a height of…

Phreatic eruption, resumption of degassing at Kanlaon volcano, Philippines

Phreatic eruption, resumption of degassing at Kanlaon volcano, Philippines

A phreatic (steam-driven) eruption started at Kanlaon volcano in Negros Island, Philippines at 01:47 UTC (09:47 local time) on December 9, 2017. The eruption was preceded by a resumption of degassing at the summit crater at 22:34 UTC, December 8 (06:34 local time,…

The Weekly Volcanic Activity Report: November 29 – December 5, 2017

The Weekly Volcanic Activity Report: November 29 – December 5, 2017

New activity/unrest was reported for 5 volcanoes between November 29 – December 5, 2017. During the same period, ongoing activity was reported for 11 volcanoes. New activity/unrest: Agung, Bali (Indonesia) | Great Sitkin, Andreanof Islands (USA) | Klyuchevskoy,…

Strong eruption at Sheveluch volcano, ash to 10 km (33 000 feet) a.s.l.

Strong eruption at Sheveluch volcano, ash to 10 km (33 000 feet) a.s.l.

After a long period of relative calm, a powerful explosive eruption occurred at Sheveluch volcano, Kamchatka, Russia at 21:00 UTC on December 4, 2017. The eruption lasted about 20 minutes and sent an ash plume to a height of 33 000 feet (10 km) above sea level. The…

The Weekly Volcanic Activity Report: November 22 – 28, 2017

The Weekly Volcanic Activity Report: November 22 – 28, 2017

New activity/unrest was reported for 2 volcanoes between November 22 and 28, 2017. During the same period, ongoing activity was reported for 12 volcanoes. New activity/unrest: Agung, Bali (Indonesia) | Great Sitkin, Andreanof Islands (USA). Ongoing activity: Aira,…

Strong phreatic eruption at Mount Agung, Bali, Indonesia

Strong phreatic eruption at Mount Agung, Bali, Indonesia

A strong phreatic eruption started at Mount Agung, Bali, Indonesia at 09:30 UTC (17:30 WIB) on Saturday, November 25, 2017. This is the second eruption of this volcano since Tuesday, November 21. Although significantly stronger, the Alert Level remains at second…

The Weekly Volcanic Activity Report: November 15 – 21, 2017

The Weekly Volcanic Activity Report: November 15 – 21, 2017

New activity/unrest was reported for 3 volcanoes between November 15 and 21, 2017. During the same period, ongoing activity was reported for 11 volcanoes. New activity/unrest: Agung, Bali (Indonesia) | Oraefajokull, Iceland | Sarychev Peak, Matua Island (Russia)….

Robust steaming, elevated seismicity at Great Sitkin volcano, Alaska

Robust steaming, elevated seismicity at Great Sitkin volcano, Alaska

The Alaska Volcano Observatory (AVO) has raised the Aviation Color Code and Volcano Alert Level to Yellow/Advisory on November 22, 2017, after recent reports of robust steaming and a several month period of elevated earthquake activity. Historical eruptions have…

Eruption at Agung volcano, Bali, Aviation Color Code raised to Orange

Eruption at Agung volcano, Bali, Aviation Color Code raised to Orange

A small-scale phreatic eruption started at Agung volcano, Bali at 09:05 UTC (17:05 WITA) on November 21, 2017, forcing authorities to raise the Aviation Color Code from Yellow to Orange. The best estimate of the ash-cloud top is around 3 842 m (12 294 feet) above…