Worldwide Volcano News and Updates

Volcanic activity at Popocatépetl decreased in comparison to last week. The Washington VAAC reported that during 21 to 25 December there were intermittent emissions of mostly steam. In addition, several small-to-moderate explosive events occurred during the week; at 1555 on 24 December ash was erupted to ~9 km a.s.l. and then blown to the E; at 1045 on 25 December ash was erupted to between 5.5 and 7.6 km a.s.l., blown to the NE, and deposited less than 5 km from the summit; and moderate exhalations occurred at 0111 and 0631 on 27 December that sent ash up to 7.6 and 9.8 km, respectively. Read all

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During the week surface lava flows continued to flow down Pulama pali, with the lava flow front more than 2 km inland from the sea. Overall, seismic tremor was weak to moderate near Pu`u `O`o and was weak beneath Kilauea caldera. The tiltmeters at Kilauea's summit and along the east rift zone showed flat signals. Read all

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KVERT reported that seismic activity was at background levels at Karymsky until 0905 to 0915 on 20 December when shallow earthquakes registered under the volcano were accompanied by short-lived explosions. At 2150 the same day, a pilot confirmed the presence of ash at the summit of the volcano and mud traces from melting snow on the edifice slopes. On 21 and 22 December (the end of KVERT's report period) seismicity was above background levels. Read all

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The VSI reported that during 12-18 December, activity increased at Karangetang in comparison to the previous week. A thin plume continued to be emitted from the main crater and Crater II, but it rose higher than last week: up to 150 m above the summit. A "red flame," possibly indicating illumination of the plume by lava fountaining or incandescent material at the summit, was observed rising up to 75 m above the summit. Read all

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Volcanic activity at Etna was low during December, with low gas emission at the SE Crater throughout the month and a few isolated Strombolian events at the Bocca Nuova crater in mid-December. Read all

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The IG reported that at 1415 on 14 December an ash cloud was observed at an altitude of ~5.5 km a.s.l. near Tungurahua's summit, moving to the NE. No ash was visible in GOES 8 imagery. Read all

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The VSI reported that during 5-11 December volcanic activity at Bromo cone in the Tengger caldera was marked by ongoing explosions and continuous tremor. Ash clouds produced from the explosions reached 150-900 m above the crater rim. The volcano remained at Alert Level 2 (ranging from 1 to 4). Read all

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Activity at the Soufrière Hills volcano remained at an elevated level during 8-15 December, with continued growth of the lava dome. Seismic activity was comparable to last week and the main focus of volcanic activity remained on the E flank. Near-continuous rockfalls and ash venting occurred from the summit area, producing ash clouds that traveled to the W of the volcano. Read all

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KVERT reported that the character of volcanic activity at Shiveluch did not change during 9-16 December. Weak seismicity was registered at the volcano during most of the week. Much like the previous week, two seismic events occurred that were above normal levels. Read all

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The VSI reported that during 5-11 December fume from Jonggring Seloko crater located in the S sector of Semeru's summit rose up to 600 m above the crater. The seismic record was dominated by explosion earthquakes and the record showed that two pyroclastic flows occurred. The volcano remained at Alert Level 2 (ranging from 1 to 4). Read all

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