Wed, 31 Jan 2007, 06:00
Data from deformation-monitoring instruments showed that during 31 January-6 February, a spine on the lava dome at Mount St. Helens continued to grow. Seismicity continued at low levels, punctuated by M 1.5-2.5 and occasionally larger earthquakes.
Wed, 31 Jan 2007, 06:00Based on satellite imagery, the MVO, and pilot reports, the Washington VAAC reported that a diffuse plume from Soufrière Hills rose to an altitude of 1.5 km (5,000 ft) a.s.l. and drifted WNW on 31 January. Measurable activity was low and visual observations were limited due to cloud cover.
Wed, 31 Jan 2007, 06:00
Activity at Shiveluch continued above background levels during 26 January-2 February, with over 140 shallow earthquakes occurring daily. Based on seismic interpretation, observation, and video data, gas-and-ash plumes rose 3.5-4.5 km (11,500-14,800 ft) a.s.l. throughout the reporting period.
Wed, 31 Jan 2007, 06:00INSIVUMEH reported that explosions from Santa María's Santiaguito lava dome complex on 31 January and 5 February produced ash plumes that rose to altitudes of 4.8 km (15,700 ft) a.s.l. On 5 February, plumes drifted SW and S causing ashfall downwind. Block-and-ash avalanches descended the SW and S flanks of Caliente Dome.
Wed, 31 Jan 2007, 06:00
Based on information from the Guayaquil MWO and satellite imagery, the Washington VAAC reported that an eruption from Sangay on 6 February produced ash plumes that rose to a maximum altitude of 9.1 km (30,000 ft) a.s.l. and drifted SW.
Wed, 31 Jan 2007, 06:00RVO reported that on 31 January, a large explosion from Rabaul caldera's Tavurvur cone produced a shockwave. The flanks were showered with lava fragments and an ash plume rose a few hundred meters above the summit and drifted SE and E. Two more explosions occurred later that day.
Wed, 31 Jan 2007, 06:00
During 31 January-6 February, lava from Kilauea continued to flow from lava deltas into the ocean at the East Lae'apuki, Kamokuna, and East Ka'ili'ili entries. Incandescence was intermittently visible on the pali and from several vents in Pu'u 'O'o's crater. Tremor near Pu'u 'O'o continued at low levels.
Wed, 31 Jan 2007, 06:00Seismic activity at Karymsky was above background levels during 26 January-2 February, with 250-300 shallow earthquakes occurring daily. Ash plumes may have reached altitudes of 3.0 km (9,900 ft) a.s.l. during the reporting period. The Level of Concern Color Code remained at Orange.
Wed, 24 Jan 2007, 06:00
Based on pilot reports, the Buenos Aires VAAC reported continuous emissions from Ubinas on 28 January. Ash plumes rose to 5.5 km (18,000 ft) a.s.l. and drifted SE.
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Wed, 24 Jan 2007, 06:00PHIVOLCS reported that an explosion from the summit of Bulusan on 24 January lasted about 10 minutes based on seismic interpretation. Observation was inhibited due to cloud cover. Ashfall was reported from areas SW.
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Wed, 24 Jan 2007, 06:00
During 24-30 January, visual observations of Tungurahua were limited due to inclement weather. On 26 January, lahars affected the Pampas sector and blocked the Baños - Penipe highway until the next day. Lahars were also reported to the W in Bilbao, NNW in Mandur, and NW in la Hacienda.
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Wed, 24 Jan 2007, 06:00CVGHM lowered the Alert Level at Talang to 2 (on a scale of 1-4) on 27 January due to a reduction in seismic activity since 23 November 2006 to 24 January 2007. Gas plumes were present from the South Crater and the Main Crater.
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Wed, 24 Jan 2007, 06:00
Based on information from JMA, the Tokyo VAAC reported an eruption plume from Suwanose-jima on 28 January. The altitude and direction of the plume were not reported.
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Wed, 24 Jan 2007, 06:00Data from deformation-monitoring instruments showed that during 24-30 January, a spine on the lava dome at Mount St. Helens continued to grow. Seismicity continued at low levels, punctuated by M 1.5-2.5 and occasionally larger earthquakes.
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Wed, 24 Jan 2007, 06:00
During 24-30 January, measurable activity at Soufrière Hills remained low. Based on satellite imagery, information from MVO, and a pilot report, the Washington VAAC reported that ash plumes were visible during 26-27 January. The plumes were likely a result of rockfall activity.
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Wed, 24 Jan 2007, 06:00Activity at Shiveluch continued above background levels during 19-26 January, with over 120 shallow earthquakes occurring daily. Based on seismic interpretation and observation and video data, gas-and-ash plumes rose to 5.5 km (18,000 ft) a.s.l. and avalanches occurred throughout the reporting period.
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Wed, 24 Jan 2007, 06:00
Based on a pilot report and information from INSIVUMEH, the Washington VAAC reported that a diffuse plume from Santa María's Santiaguito lava-dome complex reached an altitude of 4.3 km (14,000 ft) a.s.l. on 24 January. A diffuse plume drifted SW on 30 January.
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Wed, 24 Jan 2007, 06:00Based on information from Guayaquil MWO, the Washington VAAC reported that an eruption from Sangay on 28 January produced an ash plume that rose to an altitude of 6.4 km (21,000 ft) a.s.l.
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Wed, 24 Jan 2007, 06:00
RVO reported that during 18-26 January, seismic activity at Rabaul caldera's Tavurvur cone continued at low levels. On 24 and 27-30 January, emissions of steam and a small amount of ash produced plumes that rose to a maximum altitude of 2.7 km (8,900 ft) a.s.l. and drifted N, NE, and E.
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Wed, 24 Jan 2007, 06:00During 16-26 January, eruptive activity at Langila's Crater 2 consisted of continuous emissions of gray ash plumes that rose to altitudes of 2.3 km (7,600 ft) a.s.l. and drifted SE and NE. Fine ash fell on the flanks.
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Wed, 24 Jan 2007, 06:00
During 24-30 January, lava from Kilauea continued to flow from lava deltas into the ocean at the East Lae'apuki, Kamokuna, and East Ka'ili'ili entries. Incandescence was intermittently visible on the pali and from several vents in Pu'u 'O'o's crater. Breakout lava from the Campout flow advanced about 1.6 km per hour on 24 January.
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Wed, 24 Jan 2007, 06:00Seismic activity at Karymsky was above background levels during 19-26 January, with 100-250 shallow earthquakes occurring daily. Ash plumes may have reached altitudes of 3.5 km (11,500 ft) a.s.l. during 7-8 January.
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Wed, 24 Jan 2007, 06:00
Based on a pilot report and information from INSIVUMEH, the Washington VAAC reported that a diffuse plume from Fuego reached an altitude of 4 km (13,000 ft) a.s.l. and drifted NE. A hotspot over the crater was visible on satellite imagery.
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Wed, 17 Jan 2007, 23:13
The lava dome at Mount St. Helens continues to grow slowly, accompanied by low-level seismicity.
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Wed, 17 Jan 2007, 23:10
INSIVUMEH reported that explosions from Fuego produced white and gray plumes that rose to an altitude of 4 km (13,000 ft) a.s.l. and drifted SW on 12 January. Incandescent material was propelled up to 75 m above the summit and incandescent blocks rolled W towards the Taniluyá and Santa Teresa ravines on 12 January and S towards the Ceniza ravine on 12 and 16 January. Based on information from the Tegucigalpa MWO and satellite imagery, the Washington VAAC reported that a faint plume was seen on 12 January drifting W.
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Wed, 17 Jan 2007, 23:05
Over the past days, lava-dome growth at Soufrière Hills continued and was focused on the NW sector of the dome. Occasional pyroclastic flows travelled down to the W in Gages Valley, to the NW in Tyres Ghaut and S down the Tar River Valley.
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Wed, 17 Jan 2007, 06:00
Based on a pilot report, the Darwin VAAC reported that an ash plume from Ulawun rose to an altitude of 2.4 km (8,000 ft) a.s.l. on 18 January and drifted SW.
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Wed, 17 Jan 2007, 06:00Based on satellite imagery, the Buenos Aires VAAC reported continuous emissions from Ubinas on 18 January. The resultant plumes drifted SW.
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