Thu, 30 Aug 2007, 23:45
MVO reported that during 21-28 August the lava dome at Soufrière Hills changed very little, based on visual observations. Seismic activity was very low and low-level rockfall activity continued. On 23 August, heavy rainfall triggered small rockfalls and four pyroclastic flows to the E down the Tar River Valley. Ash and steam emissions from the dome produced a plume that drifted W. A lahar occurred in the Belham river valley to the NW. The Alert Level remained elevated at 4 (on a scale of 0-5).
Thu, 30 Aug 2007, 23:42KVERT reported that seismic activity at Shiveluch was above background levels during 17-24 August. Based on seismic interpretation, avalanches and ash plumes that rose to an altitude of 8.5 km (27,900 ft) a.s.l. occurred during the reporting period. Based on visual observation, ash plumes rose to an altitude of 5.5 km (18,000 ft) a.s.l. and drifted N and NE during 17-21 August. Incandescence at the lava dome and incandescent avalanches were seen at night on 21 August. Observations of satellite imagery revealed that a thermal anomaly was present in the crater during 17-24 August. The Level of Concern Color Code remained at Orange
Thu, 30 Aug 2007, 23:39
RVO reported that ash plumes from Rabaul caldera's Tavurvur cone rose to altitudes of 0.9-2.4 km (3,000-7,900 ft) a.s.l. during 22-29 August and drifted NW. Ashfall was reported in Rabaul Town and surrounding areas during 23-29 August. Seismic activity increased to a high level on 25 through 29 August. The ash emissions were accompanied by roaring noises. Incandescence at the summit was observed during the reporting period.
Thu, 30 Aug 2007, 23:29HVO reported that fissure segment D from Kilauea's 21 July fissure eruption continued to feed an advancing 'a'a lava flow during 22-28
Thu, 30 Aug 2007, 23:23
Seismic activity at Karymsky was above background levels during 17-24 August, with 300-800 shallow earthquakes occurring daily. Based on seismic interpretation, ash plumes may have risen to an altitude of 5.7 km (18,700 ft) a.s.l. Observations of satellite imagery revealed that a thermal anomaly was present in the crater on 20 and 23 August. The Level of Concern Color Code remained at Orange.
Thu, 30 Aug 2007, 23:20On 24 August, INSIVUMEH reported that fumarolic plumes from Fuego rose to an altitude of 3.9 km (12,800 ft) a.s.l. and drifted W. A lahar carried tree trunks, branches, and blocks down the Lajas drainage to the SE. A lahar again affected the drainage on 27 August. Explosions on 28 August produced ash plumes that rose to an altitude of 4.1 km (13,500 ft) a.s.l.
Thu, 30 Aug 2007, 23:00
Clouds obscured satellite and web camera views of Cleveland volcano during 22-28 August. A clear view of the crater on 23 and 28 August revealed thermal anomalies at the summit. The Aviation Color Code remained at Orange and the Volcano Alert Level remained at Watch.
Thu, 30 Aug 2007, 22:54Based on observations of satellite imagery, the Darwin VAAC reported that an ash plume from Raung rose to an altitude of 4.6 km (15,000 ft) a.s.l. during 26-27 August and drifted E.
Thu, 30 Aug 2007, 22:47
Seismic activity at Pavlof remained elevated during 22-28 August. A strong thermal anomaly was present at the summit on satellite imagery on 22, 24, 25, and 28 August; clouds inhibited observations on other
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Thu, 30 Aug 2007, 16:46
News about an eruption on Ferdinandina Island in the Galapagos archipelago turned out to be wrong. After an earthquake with a 5.2-degree Richter Scale on Tuesday, ash plumes were believed to have originated from a new eruption. As an overflight revieled, the ash plume had been caused by a large rockfall from the inner rim of the caldera and not by an eruption.
Wed, 29 Aug 2007, 06:00
IG reported that ash plumes from Tungurahua rose to an altitude of 7 km (23,500 ft) a.s.l. on 29 August; clouds inhibited visual observations during 30 August-4 September. Ashfall was reported during 29 August-3 September in areas to the W.
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Wed, 29 Aug 2007, 06:00Based on a report from Kimbe Vulcanological Observatory (KVO), RVO reported that people from villages near Pago heard a single booming noise and saw an increase in white vapor emission on 27 August. Seismicity increased during 27-28 August. The second crater of the upper vents ejected lava fragments on 28 August.
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Wed, 29 Aug 2007, 06:00
Seismic activity at Pavlof fluctuated, but generally remained elevated during 29 August-4 September. A strong thermal anomaly was present at the summit on satellite imagery during 29 August-2 September; clouds inhibited observations on 3 and 4 September. Based on pilot reports and observations of satellite imagery, ash plumes rose to altitudes of 2.4-4.9 km (8,000-16,000 ft) a.s.l. during 28-30 August and drifted SSE and SE.
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Wed, 29 Aug 2007, 06:00Based on visual observations, KVERT reported that explosions from Chikurachki produced ash plumes during 21-26 August. Ash plumes were visible on satellite imagery drifting NE during 28-30 August. The Level of Concern Color Code remained at Orange.
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Wed, 29 Aug 2007, 06:00
Data from deformation-monitoring instruments indicated that during 29 August-4 September lava-dome growth at Mount St. Helens continued. Seismicity persisted at low levels, punctuated by M 1.5-2.5, and occasionally larger, earthquakes.
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Wed, 29 Aug 2007, 06:00MVO reported that during 28 August-3 September the lava dome at Soufrière Hills changed very little, based on visual observations. Seismic activity was very low and low-level rockfall activity continued. The Alert Level remained elevated at 4 (on a scale of 0-5).
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Wed, 29 Aug 2007, 06:00
KVERT reported that seismic activity at Shiveluch was above background levels during 24-31 August. Based on seismic interpretation, avalanches and ash plumes that rose to an altitude of 9 km (29,500 ft) a.s.l. occurred during the reporting period.
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Wed, 29 Aug 2007, 06:00On 31 August, INSIVUMEH reported that a lahar, 8 m wide and 1.5 m high, descended S down Santa María's Nima I river, carrying fine material, tree branches, and blocks. Explosions from the Santiaguito lava dome complex produced ash plumes that rose to 4.3 km (14,100 ft) a.s.l. and drifted SW.
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Wed, 29 Aug 2007, 06:00
RVO reported that ash plumes from Rabaul caldera's Tavurvur cone decreased in frequency during 30 August-1 September. Ash plumes drifted W and NW on 29 August. On 31 August, an explosion produced an ash plume that rose to an altitude of 3.7 km (12,000 ft) a.s.l.
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Wed, 29 Aug 2007, 06:00HVO reported that during 29 August-4 September fissure segment D from Kilauea's 21 July fissure eruption continued to feed an advancing 'a'a lava flow that frequently overflowed its channel edges. During 29-30 August, a few small collapses within the Pu'u 'O'o's crater were detected by seismometers. Incandescence in the crater was visible on the web camera on 31 August.
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Wed, 29 Aug 2007, 06:00
Seismic activity at Karymsky was above background levels during 24-31 August, with 100-280 shallow earthquakes occurring daily. Based on seismic interpretation, ash plumes may have risen to an altitude of 5.9 km (19,400 ft) a.s.l. Observations of satellite imagery revealed that a thermal anomaly was present in the crater on 24 and 30 August.
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Wed, 29 Aug 2007, 06:00The Alert Status of Karangetang was lowered on 30 August from 4 to 3 (on a scale of 1-4).
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Wed, 29 Aug 2007, 06:00
On 31 August, INSIVUMEH reported that a lahar, 8 m wide and 1.5 m high, descended W down Fuego's Santa Teresa ravine, carrying fine material, tree branches, and blocks. On 3 September, fumarolic plumes rose to an altitude of 4 km (13,000 ft) a.s.l. and drifted W and SW.
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Wed, 29 Aug 2007, 06:00Based on information from the Istituto Nazionale di Geofisica e Vulcanologia and observations using satellite imagery, the Toulouse VAAC reported that a diffuse eruption plume from Etna rose to an altitude of 4.6 km (15,000 ft) a.s.l. during 4-5 September and drifted E.
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Wed, 29 Aug 2007, 06:00
Clouds obscured satellite and web camera views of Cleveland volcano during 29 August-4 September. A clear view of the crater on 30 August and 1 September revealed thermal anomalies at the summit. No current seismic information is available because Cleveland does not have a real-time seismic network.
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Sun, 26 Aug 2007, 12:29Etna is back erupting. Since 15 August 2007, the SE crater has been showing weak explosive activity from the vent in the collapse pit on the E falnk of the SE cone. The activity consits mainly of deep-seated strombolian explosions occurring at irregular intervals of several minutes or more, producing dark to brown ash plumes with some fresh material.
Thu, 23 Aug 2007, 17:05
Karymsky continues erupting producing sporadic ash plumes. An explosion on 22 Aug produced an ash plume rising to 6 km altitude according to the Tokyo VAAC.
Thu, 23 Aug 2007, 16:59Explosive activity at Sheveluch volcano continues. Ash plumes from explosions rising to 4-6 km are observed by pilots and from satellite. According to Ria Novosti, a possibly much more powerful eruption might have taken place last Tuesday (21 Aug), sending ash to more than 10 km, although it has not been confirmed so far by other data.
