A series of small to moderate earthquakes shook Mount St. Helens volcano in Washington over the past couple of days. The largest was M3.9 at a depth of 10.2 km (6.2 miles) on January 3, 2018, followed by M2.7, M2.0 and M1.9. The quakes are believed to be tectonic in…
New activity/unrest was reported for 4 volcanoes between December 27, 2017 and January 2, 2018. During the same period, ongoing activity was reported for 8 volcanoes. New activity/unrest: Agung, Bali (Indonesia) | Bezymianny, Central Kamchatka (Russia) | Kanlaon,…
New activity/unrest was reported for 5 volcanoes between December 20 and 26, 2017. During the same period, ongoing activity was reported for 10 volcanoes. New activity/unrest: Agung, Bali (Indonesia) | Bezymianny, Central Kamchatka (Russia) | Kanlaon, Philippines |…
Increased seismicity and rapid caldera inflation are being observed at the Sierra Negra volcano on Isabela Island, Galapagos, IGEPN reports in a special bulletin released December 22, 2017. The last eruption of this volcano took place in 2005. The current inflation…
New activity/unrest was reported for 7 volcanoes between December 13 – 19, 2017. During the same period, ongoing activity was reported for 12 volcanoes. New activity/unrest: Agung, Bali (Indonesia) | Bezymianny, Central Kamchatka (Russia) | Kanlaon, Philippines |…
A major eruption started at Bezymianni volcano, Kamchatka, Russia at 03:41 UTC on December 20, 2017. According to Tokyo VAAC, volcanic ash plume is reaching 15.2 km (50 000 feet) above sea level and drifting NE. In terms of ash cloud height, this is the strongest…
At least two 'stronger than usual' explosions took place at Italy's Stromboli volcano over the past 24 hours. The first explosion took place at 01:30 UTC (December 15) and the second around 10:30 UTC. "A gigantic cloud of smoke was visible from the…
The Kanlaon volcano's seismic network recorded 1 217 volcano earthquakes on December 14, 2017, an uptick from already unusually high 578 recorded on December 13. Wispy emission of white steam-laden plumes were observed coming from the summit crater, PHIVOLCS…
New activity/unrest was reported for 6 volcanoes between December 6 and 12, 2017. During the same period, ongoing activity was reported for 16 volcanoes. New activity/unrest: Agung, Bali (Indonesia) | Kanlaon, Philippines | Klyuchevskoy, Central Kamchatka (Russia) |…
A new explosion was detected at Cleveland volcano, Alaska at 13:20 UTC on December 13, 2017. AVO raised the Aviation Color Code back to Orange. The explosion produced an eruption cloud that was observed in satellite data to an altitude of 6 km (20 000 feet) a.s.l….
