Shiveluch Volcano, Kamchatka, Russia – John Seach

An eruption occurred at Shiveluch volcano on 25th July 2009. Ash emissions reached height of 23,000 ft, and 170 earthquakes were measured in 24 hour period. Some earthquakes were followed by ash emissions and avalanches. Volcanic activity over the past 3 years has significantly altered the shape of the volcano, with the crater increasing in [...]

Chaitén Volcano, Chile – John Seach

Seismicity has remained high at Chaiten volcano, Chile, during the period 16-22 July. The eruption continues unchanged with a column of ash and steam rising 1.5 km above the summit. Block and ash flows still persist, indicating the dome complex has continued to grow, particularly towards the western sector of the caldera. Some strong emissions [...]

Stromboli Volcano, Italy – John Seach

During the period 6-12 July 2009, eruptions continued from 4 vents at Stromboli volcano in Italy. Two vents were active in the north crater, and two in the south crater. The north crater showed short eruptions which ejected bombs, lapilli and fine ash. The intensity of eruptions was average, with emissions to a height of [...]

Mayon Volcano, Philippines – John Seach

Mayon volcano in the Philippines has been raised from Alert Level 1 (low level unrest) to Alert Level 2 (moderate unrest). Beginning June 2009 seismic activity increased to the same level when a phreatic explosion occurred last August 2008. Ground uplift of one centimetre has been measured, and a summit glow was visible from [...]

Mayon Volcano, Philippines – John Seach

There are signs of unrest at Mayon Volcano in the Philippines after an increase in summit crater glow has been observed. This is caused by a rise in magma levels at the volcano. The Philippine Institute of Volcanology and Seismology has also recorded an inflation of the volcano. Alert level one is maintained at Mayon [...]

Chaitén Volcano, Chile – John Seach

Eruptive activity continues at Chaiten volcano in Chile. Over the past week there has been a decrease in earthquake number and magnitude, with 17 earthquakes recorded per day. Ash emissions rise 1.5 km above the summit. A lava dome continues to grow in the summit crater, which may collapse generating ash and block flows in [...]

Kilauea Volcano, Hawaii – John Seach

A collapse occurred at the summit vent in Kilauea volcano, Hawaii on 30th June. The collapse occurred at 1:38 PM (Hawaiian Standard Time) Tuesday afternoon, and blocked the summit vent. The event produced a brown plume, booming noises, and ground shaking which was felt at Hawaii Volcano observatory and Jaggar Museum. Between 2:30 PM and [...]