Volcanos

Roundup of Global Volcanic Activity:

Stromboli (Eolian Islands, Italy): During a larger explosion of the NE crater, part of the northern crater wall collapsed. The explosion and resulting rockfall caused a large ash and steam plume that drifted over the island and scared many of the inhabitants. When we visited the Sciara del Fuoco in the afternoon, a small lava flow was actively issuing from the effusive vent (that had been active intermittently during the previous days) located just beneath the new crater breach. The flow was about 10 meters wide and had previously reached about 150 m length where a cooling flow front was still visible. During the afternoon / evening, the flow continued to be quite active, producing many incandescent avalanches of blocks tumbling down the Sciara.

Lokon-Empung (North Sulawesi, Indonesia): Further ash explosions occurred today and yesterday. Authorities recommend not to approach the Tompaluan crater within a radius of 2.5 km.

Kizimen (Kamchatka): An ash plume was observed at 15,000 ft (4.6 km) altitude 12 Jan morning, possibly from a pyroclastic flow or an explosion at the growing lava dome. A new lava flow extrudes from the summit on the north-eastern flank of the volcano. Incandescence of the volcano summit, hot avalanches on the western and eastern volcanic flanks and strong gas-steam activity accompany this process. Tolbachik (Kamchatka): The eruption continues with little changes. Reports of constant high tremor and effusion of lava flows from the southern fissure.

Manam (Papua New Guinea): An large explosion occurred yesterday morning. VAAC Darwin reported an ash plume rising to 45,000 ft (approx. 14 km) altitude.

Other volcanoes: No significant changes have occurred at other monitored volcanoes.