Elevated activity at Guatemala's Santa Maria volcano continues. Explosions at Caliente cone, part of Santa María's Santiaguito lava-dome complex, over the last couple of days produced ash plumes that rose up to 5 km (16 400 feet). Several pyroclastic…
At about 18:35 UTC on May 13, 2016, seismic activity at Pavlof volcano increased to levels that are typically associated with minor eruptive activity, Alaska Volcano Observatory (AVO) reports. Based on the change and character of the seismicity, it is possible that…
Costa Rica's Turrialba volcano erupted at 07:19 UTC on May 12, 2016 (01:19 local time), sending a column of smoke and ash up to 3 km (17 000 feet) above the summit (~6.3 km / 20 800 feet a.s.l.). The eruption lasted between 8 and 11 minutes. Emergency services…
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New activity/unrest was observed at 4 volcanoes between May 4 and 10, 2016. During the same period, ongoing activity was reported for 19 volcanoes. New activity/unrest: Bristol Island, South Sandwich Islands (UK) | Nevados de Chillán, Chile | Ruapehu, North…
GNS scientists have observed an increase in the output of volcanic gas from Mount Ruapehu's Crater Lake on May 10, 2016. As a result, the Volcanic Alert Level was raised to Level 2. The Aviation Colour Code was also changed, from Green to Yellow. New…
On March 14, 2016, the seismic network at Mount St. Helens, Washington, US began detecting small magnitude volcano-tectonic earthquakes at a depth between 2 and 7 km (1.2 to 4 miles). Earthquake rates have been steadily increasing since March, reaching nearly 40…
Niigata Yake-Yama volcano in Honshu, Japan, has been showing signs of seismic unrest recently, according to JMA. The number of volcanic earthquakes has been at a level of about 4 times the usual background level, and up to 23 earthquakes have been recorded in a 24…
Alaska Volcano Observatory (AVO) detected an explosion at Cleveland Volcano at 02:44 UTC on May 6, 2016. The last known eruption of this volcano took place in 2015. The eruption was detected in both infrasound (air pressure) and seismic data. There are no recent…
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New activity/unrest was observed at 5 volcanoes between April 27 and May 3, 2016. During the same period, ongoing activity was reported for 13 volcanoes. New activity/unrest: Kerinci, Indonesia | Klyuchevskoy, Central Kamchatka (Russia) | Rincon de la Vieja, Costa…
Data collected by the Landsat-8 satellite suggests the Bristol Island volcano, which hasn't erupted since 1956, may have entered a phase of increased activity in late April 2016. The clear weather view has shown a plume of gas and steam which may have contained…
