Wed, 27 Feb 2008, 06:00
Based on pilot reports, the Buenos Aires VAAC reported that an ash plume from Ubinas rose to altitudes of 5.5-6.1 km (18,000-20,000 ft) a.s.l. and drifted SE on 2 March.
Wed, 27 Feb 2008, 06:00AVO reported elevated seismic activity from Veniaminof during 27 February-4 March. Web camera views showed steaming from the cone and occasional small ash bursts that rose to 200 m above the crater on 27 February. During 28 February-3 March views were obscured by cloud cover; low-level steaming was seen on 29 February during a break in the weather.
Wed, 27 Feb 2008, 06:00
According to Frederick Belton's Ol Doinyo Lengai website, a visitor reported a large plume accompanied by a "bang" during 26-27 February. The Toulouse VAAC reported that a pilot observed an ash plume that rose to an altitude of 10.7 km (35,000 ft) a.s.l. on 27 February.
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Wed, 27 Feb 2008, 06:00Based on observations of satellite imagery and information from RVO, the Darwin VAAC reported that a diffuse plume from Bagana rose to an altitude of less than 3 km (10,000 ft) a.s.l. and drifted SW on 3 March. Later that day an ash-and-steam plume drifted SW.
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Wed, 27 Feb 2008, 06:00
IG reported that although visual observations were very limited due to cloud cover, steam and ash-and-steam plumes from Tungurahua were spotted and rose to altitudes of 5.8-8 km (19,000-26,200 ft) a.s.l. during 27 February-1 March. Ash plumes drifted NW, W, SW, and SE, ashfall was reported in areas to the SW on 27 February.
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Wed, 27 Feb 2008, 06:00MVO reported that that during 27 February-4 March the lava dome at Soufrière Hills changed very little, based on limited visual observations during an overflight on 29 February and from ground locations. The E talus slope continued to erode, with both fresh and older material accumulating in the Tar River Valley. Active fumaroles around the lava dome were observed during breaks in cloud cover.
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Wed, 27 Feb 2008, 06:00
KVERT reported that seismic activity at Shiveluch was slightly above background levels and small hot avalanches descended the lava dome during 22-29 February. According to video footage, fumarolic activity was observed during 21-22 and 24-25 February. Based on seismic interpretation, ash plumes possibly rose to an altitude of 5.6 km (18,400 ft) a.s.l. during 24-26 February.
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Wed, 27 Feb 2008, 06:00RVO reported that ash and steam plumes from Rabaul caldera's Tavurvur cone rose to altitudes of .9-2.2 km (3,000-7,200 ft) a.s.l. and drifted W during 27 February-4 March. Ashfall was reported in areas downwind, including Matupit, during 27 February-1 March.
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Wed, 27 Feb 2008, 06:00
INGEOMINAS reported that seismic tremor from Nevado del Huila on 2 March was possibly associated with ash emission. Based on a Bogota SIGMET, the Washington VAAC reported that an ash plume rose to an altitude of 7.6 km (25,000 ft) a.s.l. the same day.
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Wed, 27 Feb 2008, 06:00CVGHM reported that on 28 February the Alert level for Lokon-Empung was lowered from 3 to 2 (on a scale of 1-4) due to a decrease in seismicity during 3-26 February, analysis of visual observations, and a lack of deformation. During 14-26 February, white plumes rose to an altitude of 1.7 km (5,600 ft) a.s.l. Visitors and tourists were prohibited from going within a 1-km radius of the crater.
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Wed, 27 Feb 2008, 06:00
SERNAGEOMIN reported weak sulfur dioxide plumes from two cones in Llaima's main crater during 26-28 February. An overflight on 28 February revealed that the internal structure of the crater had not changed since observations on 21 February. Weak fumarolic emissions from the main crater were noted during 2-3 March.
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Wed, 27 Feb 2008, 06:00Based on observations during overflights, and web camera views when weather permitted, HVO reported that during 27 February-4 March activity from Kilauea's fissure segment D was concentrated at the Thanksgiving Eve Breakout (TEB) shield and satellitic shields to the E and SE. A pahoehoe flow ponded between the rootless shields and Kalalua Cone. Two lava flow lobes advanced through Royal Gardens subdivision and destroyed three abandoned homes by 28 February.
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Wed, 27 Feb 2008, 06:00
AVO reported that a weak thermal anomaly and an ash plume from Cleveland were visible on satellite imagery on 29 February. The ash plume rose to an altitude of below 3 km (10,000 ft) a.s.l. The Volcanic Alert Level remained at Advisory and the Aviation Color Code remained at Yellow.
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Wed, 27 Feb 2008, 06:00The USGS reported that levels of seismicity at Anatahan were elevated during 27 February-4 March. During 27-29 February emissions of sulfur dioxide were detected by the satellite-based Ozone Monitoring Instrument (OMI). Based on observations of satellite imagery, the Washington VAAC reported that an ash plume drifted SSW on 28 February.
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Thu, 21 Feb 2008, 14:55
During 13-19 February lava-dome growth at Mount St. Helens continued.
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Thu, 21 Feb 2008, 14:52During 13-19 February the lava dome at Soufrière Hills changed very little. Seismic activity was very low and low-level rockfall activity continued. Fumarolic activity on the N and E flanks continued. Active fumaroles were also noted in the Galway's area to the S of the dome.
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Thu, 21 Feb 2008, 14:25
8-11 February: Seismic activity at Shiveluch was slightly above background levels and at background levels.
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Thu, 21 Feb 2008, 14:20Avalanches from lava flows were reported on 6 February on the W flank of Santa María's Santiaguito lava dome complex.
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Thu, 21 Feb 2008, 14:18
Ash plumes from Rabaul caldera's Tavurvur cone rose to an altitude of 2.2 km and drifted NW, N, E, SE,
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Thu, 21 Feb 2008, 14:15CENAPRED reported that emissions of steam and gas from Popocatépetl were visible during 12-19 February. The plumes contained slight amounts of ash from explosions in the crater.
Thu, 21 Feb 2008, 14:09
During 6-19 February white and blue fumarolic plumes from Pacaya's MacKenney cone rose to altitudes of 2.6-2.7 km and drifted S, SW, and W.
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Thu, 21 Feb 2008, 14:06The VAAC reported an ash plume from Ol Doinyo Lengai was rising to an altitude of 11.6 km at 15 February.
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Thu, 21 Feb 2008, 13:38
INGEOMINAS reported that sulfur dioxide plumes from Nevado del Huila
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Thu, 21 Feb 2008, 13:31HVO reported that during 13-19 February activity from Kilauea's fissure segment D was concentrated at the Thanksgiving Eve Breakout (TEB) shield and new satellitic shields to the E and SE.
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Thu, 21 Feb 2008, 12:59
During 6-19 February explosions from Fuego produced ash plumes and fumarolic plumes that rose to altitudes of 4-4.7 km.
Thu, 21 Feb 2008, 12:40Steam and steam-and-ash plumes from Colima were rising to altitudes of 4-4.4 km (13,100-14,400 ft) a.s.l. during 14-19 February. Plumes drifted N, NE, and E.
Thu, 21 Feb 2008, 12:12
AVO reported that a minor explosion from Cleveland on 15 February. The Volcanic Alert Level remained at Color Code Yellow.
Thu, 21 Feb 2008, 12:06Scientists from the Universidad de Concepción will install instruments to monitor Callaqui volcano. Local residents reported feeling earthquakes and hearing constant rumbling noises during the previous few weeks. A new eruption in near future is possible.
Thu, 21 Feb 2008, 11:35
The USGS reported a diffuse plumes from Anatahan and a increasing seismicity that was followed by new ash and steam plumes in the time of 17-20 February.
Thu, 21 Feb 2008, 11:33Ash and steam-and-ash plumes from Tungurahua were rosing to altitudes of 6-9 km a.s.l. during 12-19 February and drifted mainly NW, W, and NE. During 12-13 and 16 February, incandescence at the summit was
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