Wed, 25 Apr 2007, 06:00
Based on a pilot report, the Wellington VAAC reported that an ash plume from Lopevi covered the vent on 25 April. The altitude of the plume was not reported.
Wed, 25 Apr 2007, 06:00Based on [a pilot report to the] Petropavlovsk-Kamchatsky Flight Information Region (FIR) [at 0725], the Tokyo VAAC reported that on 29 April an ash plume from Bezymianny rose to an altitude of 6.1 km (20,000 ft) a.s.l. and drifted W. [Ash was not seen in MTSAT-IR satellite data about 26 minutes prior to the pilot report.].
Wed, 25 Apr 2007, 06:00
Based on satellite imagery and pilot reports, the Buenos Aires VAAC reported that ash plumes from Ubinas rose to altitudes of 5.5-7 km (18,000-23,000 ft) a.s.l. on 26, 29, and 30 April, and 1 May. Plumes drifted E and SS
Wed, 25 Apr 2007, 06:00IG reported that during 25, 27-29 April, and 1 May, ash plumes from Tungurahua rose to altitudes of 5.8-7.5 km (19,000-24,600 ft) a.s.l. and drifted SW and W. Ashfall was reported in areas to the SW, W, and NW during 25, 29-30 April, and 1 May.
Wed, 25 Apr 2007, 06:00
CVGHM lowered the Alert Level at Talang to 2 (on a scale of 1-4) on 27 April.
Wed, 25 Apr 2007, 06:00Data from deformation-monitoring instruments and observations from a remote camera showed that during 25 April-1 May lava-dome growth at Mount St. Helens continued. Seismicity persisted at low levels, punctuated by M 1.5-2.5, and occasionally larger, earthquakes.
Wed, 25 Apr 2007, 06:00
During 25 April-1 May, lava-dome growth at Soufrière Hills continued at a reduced rate. Rockfalls and pyroclastic flows occasionally occurred. On 30 April, two pyroclastic flows were observed to the NE in Tuitt's Ghaut.
Wed, 25 Apr 2007, 06:00KVERT reported that seismic activity at Shiveluch continued above background levels during 20-27 April. Based on seismic interpretation, observation, and video data, ash-and-steam plumes possibly rose to altitudes of 6.5-9 km (21,300-30,000 ft) a.s.l. throughout the reporting period.
Wed, 25 Apr 2007, 06:00
INSIVUMEH reported that explosions from Santa María's Santiaguito lava dome complex on 26 April produced ash plumes that rose to altitudes of 4.4-4.8 km (14,400-15,700 ft) a.s.l. and drifted SW. Based on satellite imagery, the Washington VAAC reported that ash plumes and steam-and-ash plumes drifted S and WSW on 26 and 28 April, respectively.
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Wed, 25 Apr 2007, 06:00On 27 April, a steam plume from Reventador rose to an altitude of 3.7 km (12,000 ft) a.s.l. Later that night, incandescent material was ejected from the crater. On 30 April, a steam plume was observed on satellite imagery drifting NW.
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Wed, 25 Apr 2007, 06:00
Based on information from RVO, the Darwin VAAC reported that explosions occasionally occurred from Rabaul on 26 April. Diffuse steam-and-ash plumes were visible on satellite imagery and rose to a few hundred meters. RVO reported that on 29 April, ash plumes rose to 2.7 km (8,900 ft) a.s.l. and drifted W.
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Wed, 25 Apr 2007, 06:00The Washington VAAC reported a steam plume from Masaya, visible on satellite imagery and a web camera, drifted WSW on 26 April.
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Wed, 25 Apr 2007, 06:00
Based on satellite imagery and information from Rabaul Volcano Observatory, the Darwin VAAC reported diffuse plumes from Manam during 25-26 April.
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Wed, 25 Apr 2007, 06:00During 20-27 April, KVERT reported that Strombolian activity occurred at Kliuchevskoi, based on observations and video data. Seismic activity continued above background levels and a thermal anomaly in the crater was detected on satellite imagery. Mudflows and lava flows continued to advance on the NW flank.
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Wed, 25 Apr 2007, 06:00
During 25 April-1 May, lava from Kilauea continued to flow SE across a lava delta into the ocean at the Kamokuna entry, but lava was not seen entering the ocean at East Lae'apuki. Incandescence was visible from several vents in the Pu'u 'O'o crater and minimally visible from breakouts on the Pulama pali. On 28 April, a gas plume rose from an unidentified location above the pali.
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Wed, 25 Apr 2007, 06:00Seismic activity at Karymsky was above background levels during 20-27 April. Based on seismic interpretation, satellite imagery, and visual observation, ash plumes rose to altitudes of 4-4.5 km (13,100-14,800 ft) a.s.l. on 21 April and drifted SE. The Level of Concern Color Code remained at Orange.
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Wed, 25 Apr 2007, 06:00
Based on satellite imagery, the Washington VAAC reported that ash plumes from Colima drifted NW on 26 April. On 28 and 30 April, incandescent material was ejected 100 m above the summit.
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Wed, 25 Apr 2007, 06:00KVERT reported that no eruptive activity from Chikurachki was noted visually or on satellite imagery during 20-27 April. The Level of Concern Color Code was lowered to yellow.
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Wed, 25 Apr 2007, 06:00
Based on a pilot report, the Darwin VAAC reported that on 27 April a plume from Batu Tara rose to an altitude of 3 km (10,000 ft) a.s.l. and drifted W.
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Wed, 25 Apr 2007, 06:00The Wellington VAAC reported that an ash plume from Ambrym was visible on satellite imagery on 1 May. The altitude and direction of the plume were not reported.
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Fri, 20 Apr 2007, 16:15
Weakly alimented lava flows continue to run from the 500 m vent at the volcano.
Thu, 19 Apr 2007, 09:17
On 18 of April, Nevado del Huila had a moderately strong ash eruption causing ash fall and lahars on its flancs due to melted snow and ice water. About 8000 people have been evacuated. After the explosion, seismic activity at the volcano has decreased again.
Thu, 19 Apr 2007, 09:13
Both tremor and the lava output have been strongly decreasing over the past days at Fournaise volcano, suggesting a possible end of the eruption in the near future.
Wed, 18 Apr 2007, 06:00INGEMMET reported that on 18 April, explosions from Ubinas produced gas and ash plumes to altitudes of 5.9-7.7 km (19,400-25,300 ft) a.s.l. Plumes drifted SW. Based on significant meteorological (SIGMET) notices, satellite imagery, and pilot reports, the Buenos Aires VAAC reported that ash plumes rose to altitudes of 5.5-7 km (18,000-28,000 ft) a.s.l. on 17, 18, 22, and 24 April.
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Wed, 18 Apr 2007, 06:00
OVPDLF reported that the eruption of Piton de la Fournaise from the S-part of the Grand Brûlé continued during 18-24 April. Tremor in this area remained very low throughout the reporting period. On 22 April, a large plume was visible from where lava flows met the sea.
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Wed, 18 Apr 2007, 06:00Based on satellite imagery, the Washington VAAC reported that an ash eruption from Nevado del Huila on 18 April produced a plume that drifted SW and dissipated. On 22 April, INGEOMINAS reported that during aerial observations, fumarolic activity was observed from a fissure first noted on 19 February. The fissure was approximately 2.3 km long and .2 km wide.
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Wed, 18 Apr 2007, 06:00
Based on pilot reports and satellite imagery, the Wellington VAAC reported that ash plumes from Lopevi rose to altitudes of 2.4-4.6 km (8,000-15,000 ft) a.s.l. during 21-24 April. Plumes drifted E on 21 April.
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Wed, 18 Apr 2007, 06:00INETER reported that explosions in the crater of Concepción on 22 April produced ash-and-gas plumes that drifted WSW.
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