Volcano Discovery Tuesday Oct 15, 2013 16:48 PM |
Klyuchevskoy volcano half an hour ago (KVERT webcam)
Glowing avalanche from Shiveluch's lava dome half an hour ago (KVERT webcam)
Eruption from Popocatépetl yesterday night
Fuego volcano this morning (? - certainly not 28 Oct 2013)
Ash explosion at Reventador volcano yesterday
Klyuchevskoy (Kamchatka): KVERT reported a small decrease in activity, although it seems during the past hours (after the report) to have increased again (see video below). The activity in any case can be considered high. An ash plume rises to up to 26,200 ft (8 km) a.s.l. and extends to the east-north-east of the volcano.
Phreatic explosions (due to lava-snow interaction) at the south-western flanks of the volcano continue. Lava flows, fed by fountaining at the summit effuse on the south-western, western and south-eastern volcanic flanks.
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Kizimen (Kamchatka): VAAC Tokyo reported an ash plume drifting at 13,000 ft (4 km) altitude from the volcano this morning at 05:28 UTC. Webcam images show a sustained steam-gas plume that might contain some ash. Glow from the summit lava dome can be seen on night-time images, indicating that lava extrusion continues:
Shiveluch (Kamchatka): The lava dome has become more active again, and frequently produces small incandescent avalanches. Strong degassing and occasional ash venting accompany this process. A weak ash plume rose today from the volcano to an altitude of about 12,000 ft, as can be seen on the following video:
Sakurajima (Kyushu, Japan): After a very productive 12 and 13 October, the volcano has only had smaller explosions since yesterday and often remained almost completely calm for hours, with no ash emissions.
Tangkubanparahu (West Java): No more eruptions have occurred since the series of 11 phreatic explosions between Saturday and Tuesday last week (5-8 Oct), but VSI continues to detect volcanic tremor.
This suggests ongoing internal movements of pressurized fluids that could lead to new explosions any time. An exclusion zone of 1.5 radius around the crater is maintained.
Veniaminof (Alaska Peninsula, USA): Satellite images from a period of clear weather last night showed that lava effusion has paused. Seismicity remains elevated and is characterized by numerous small discrete events. There is no evidence of ash emissions in seismic or satellite data. (AVO)
Popocatépetl (Central Mexico): No significant change in activity occurred, although a slightly increasing trend is visible in the past days. Emissions were at rates of 3 per hour on average yesterday. CENAPRED also recorded 10 explosions with ash plumes up to 1.5 km height. Some of them ejected incandescent material up to 300 m outside the crater on the northern slope. Alert status remains at Yellow Phase 2.
Santa María / Santiaguito (Guatemala): The lava dome has been very calm recently. No explosions or movements at the lava flows on the dome's flanks were observed during the past day, INSIVUMEH reported.
Fuego (Guatemala): After its brief surge in activity, the volcano has calmed down again a bit, but continues to produce strombolian explosions ejecting glowing lava to 50-75 m above the crater and feeding its lava flow on the southern flank. This morning, it had reached a length of 800 m, the volcano observatory reports.
Reventador (Ecuador): Steam and ash emissions with occasional explosions from the summit vent continue. Yesterday morning, a plume was seen rising about 1 km. IGPEN characterizes activity as moderate to high.
Tungurahua (Ecuador): IGPEN reports no significant changes in the ongoing eruption, dominated by strombolian activity. Glowing blocks were seen rolling down for 1 km from the crater and there were sporadic cannon-shot explosions. A steam and ash plume rose to up to approx. 2 km height above the crater and caused ash fall in the areas of Mocha, Quero, Tisaleo and (a bit) in Mandur.
