Guatemala's Fuego volcano produced at least 9 explosions early May 18 that expelled volcanic ash to a height of 4 300 m (14 110 feet) and dispersed at a distance of 7 – 10 km (4.3 – 6.2 miles) to the south. Moderately large pyroclastic flows were observed later…
After a gradual resumption of activity observed at Italy's Etna volcano since early April 2016, the volcano is now exhibiting mild to strong strombolian activity accompanied by dense smoke. The Aviation Color Code is Orange. During the night of May 16, 2016,…
A swarm of small earthquakes was detected at Mount Hood on May 15 and 16, 2016. The quakes were located 3.2 – 4.8 km (2 – 3 miles) south of the summit of Mount Hood at depths of 3.2 – 4.8 km below sea level. The largest event was a magnitude 1.8. Earthquake rates…
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…
