Based on satellite imagery, the Darwin VAAC reported that ash-and-steam plumes from Ulawun drifted SW and S on 30 August and 2 September, respectively.
CVGHM reported that the Alert Level for Tengger Caldera was raised one level to 2 (on a scale of 1-4) on 1 September due to heightened activity and a strong smell of sulfur.
Based on satellite imagery and reports from the MVO, the Washington VAAC reported that the Soufrière Hills lava dome collapsed at 1740 on 29 August. Ash venting was seen on satellite imagery prior to the collapse at 0615 and 1245. The plumes reached altitudes of 2.4 km (8,000 ft) a.s.l., drifted N, and then shifted to the W and SW.
Based on pilot reports and satellite imagery, the Buenos Aires VAAC reported continuous emissions of ash plumes from Ubinas during 30 August-1 September and on 4 September. The plumes reached altitudes of ~4.9-5.5 km (~16,000-18,000 ft) a.s.l. and drifted NE, E, and SE.
During 30 August-5 September, seismicity at Tungurahua remained low. Steam and gas plumes with low to no ash content rose to 300-600 m above the summit (17,500-18,400 ft a.s.l.) and drifted NNW and W. On 1 September, lava flows on the NW flank were confirmed to have ceased.
During 30 August-5 September, the lava dome at Mount St. Helens continued to grow. A moderate sized seismic event and associated rockfall occurred on 3 September. The hazard status remained at Volcano Advisory (Alert Level 2); aviation color code Orange.
According to the Washington VAAC, emissions of gas, steam, and possibly ash from Popocatépetl were visible from the camera operated by CENEPRED during 4-5 September. The resulting eruption cloud drifted W and did not rise high above the summit. Incandescence was periodically observed at the summit.
A small "seismic crisis" at Piton de la Fournaise began at 1000 on 30 August. A summit eruption started from the SSE edge of Dolomieu Crater at 1135 and scientists witnessed the opening of a fissure on the crater floor. A large portion of the crater floor was covered with lava by the afternoon.
Wed, 30 Aug 2006, 06:00
Occasional explosions at Mayon continued during 30 August-5 September. According to seismic data, four explosions were registered on 31 August. Ashfall was reported in surrounding cities including Tabaco (about 13 km NW) and Guinobatan (about 13 km SW).
Read allWed, 30 Aug 2006, 06:00
Based on satellite imagery, the Darwin VAAC reported that ash-and-steam plumes from Manam reached altitudes of 4.6 km (15,000 ft) a.s.l. and drifted W on 1 and 2 September. Steam plumes with possible ash were visible on satellite imagery below 3 km (10,000 ft) a.s.l. and drifted NE.
Read allWed, 30 Aug 2006, 06:00
During 23-29 August, lava from Kilauea continued to flow off of a lava delta into the ocean at the East Lae'apuki and East Ka'ili'ili entries. On 1 September, the area of the East Lae'apuki lava bench was an estimated 22 hectares (54 acres) and East Ka'ili'ili was an estimated 2.3 hectares (5.7 acres). Incandescence was visible from the East Pond and January vents, South Wall complex, and Drainhole vent in Pu'u 'O'o's crater during the reporting period.
Read allWed, 30 Aug 2006, 06:00
Activity at Karymsky continued during 26 August-1 September, with 30-70 shallow earthquakes occurring daily. Based on interpretations of seismic data, ash plumes reached altitudes of 3 km (10,000 ft) a.s.l. A thermal anomaly in the crater was detected on 26 and 28 August.
Read allWed, 30 Aug 2006, 06:00
PHIVOLCS reported that steam plumes from Bulusan reached up to 350 m above the summit (6,300 ft a.s.l.) on 30 August and 1 September. The plumes drifted NW and SE, respectively.
Read allWed, 30 Aug 2006, 06:00
Based on information from JMA, the Tokyo VAAC reported that eruptions at Sakura-jima on 3 and 4 September generated plumes that rose to ~2.7 km (~9,000 ft) a.s.l. and drifted mainly NW and N, respectively.
Read allTue, 29 Aug 2006, 18:54
The lava dome at Soufrière Hills continues to grow at moderate rate. No significant pyroclastic flows have occurred over the past weeks.
Wed, 23 Aug 2006, 06:00
The Darwin VAAC reported steam-and-ash plumes from Ulawun that were visible on satellite imagery on 25, 27, and 28 August. The plumes reached altitudes of 3.7 km (12,000 ft) a.s.l. and drifted NW, W, and SW.
Read allWed, 23 Aug 2006, 06:00
During 23-27 August, visual observations of Tungurahua were impaired due to inclement weather. Based on seismic interpretation, lava continued to slowly flow NW towards Cusúa and La Hacienda. Seismicity was low and dominated by long-period earthquakes.
Read allWed, 23 Aug 2006, 06:00
According to PHIVOLCS and news reports, lava extrusion and associated rockfalls on the SE slopes of Mayon continued during 23-29 August. On 24 and 28 August, moderate gray-and-white plumes were observed drifting to the NE, SE, and WNW.
Read allWed, 23 Aug 2006, 06:00
Based on pilot reports and satellite imagery, the Buenos Aires VAAC reported continuous emissions of ash plumes from Ubinas during 23-29 August. The plumes reached altitudes of 4.9-7.6 km (16,000-25,000 ft) a.s.l. and drifted NE, SE, and S.
Read allWed, 23 Aug 2006, 06:00
Based on information from JMA, the Tokyo VAAC reported that explosions from Suwanose-jima produced eruption plumes that rose straight up to 1.8 km (6,000 ft) a.s.l. on 26 August. On 28 August, eruption plumes rose to altitudes of 1.5 km (5,000 ft) a.s.l. and drifted E.
Read allWed, 23 Aug 2006, 06:00
During 23-29 August, the lava dome at Mount St. Helens continued to grow and produce small rockfalls. The hazard status remained at Volcano Advisory (Alert Level 2); aviation color code Orange.
Read allWed, 23 Aug 2006, 06:00
During 18-25 August, the Soufrière Hills lava dome continued to grow. A marked increase of long-period and hybrid earthquakes was noted from 18 to 20 August. Based on satellite imagery and reports from the MVO, the Washington VAAC reported that continuous emissions of ash and steam produced plumes that reached altitudes of 1.5 km (5,000 ft) a.s.l. on 28 August.
Read allWed, 23 Aug 2006, 06:00
According to the Darwin VAAC, ash plumes from Semeru were visible on satellite imagery on 25 August.
Read allWed, 23 Aug 2006, 06:00
The Washington VAAC reported that emissions from Pacaya with possible ash content were visible on satellite imagery on 28 August. The plumes reached altitudes of ~3 km (~10,000 ft) a.s.l. and drifted W. A thermal anomaly was identified on the imagery.
Read allWed, 23 Aug 2006, 06:00
The Tokyo VAAC reported that an eruption at Miyake-jima on 23 August generated plumes that reached altitudes of ~1.5 km (~5,000 ft) a.s.l. and drifted SE. Ash was not identified on satellite imagery.
Read allWed, 23 Aug 2006, 06:00
During 22-23 August, emissions from Manam consisted of dark brown-to-gray ash plumes that rose 1-2 km above the summit (9,200-12,500 ft a.s.l.) and drifted W and NW.
Read allWed, 23 Aug 2006, 06:00
Several small phreatic explosions occurred at Lascar during May, July, and August. The explosions were separated in time by up to several weeks. The last observed explosion, lasting for about five minutes on 14 August, produced a plume that reached a height of 450 m above the crater (19,800 ft a.s.l.) and dispersed ESE.
Read allWed, 23 Aug 2006, 06:00
During 23-29 August, lava from Kilauea continued to flow off of a lava delta into the ocean at the East Lae'apuki and East Ka'ili'ili entries. Incandescence was visible from the East Pond and January vents, South Wall complex, and Drainhole vent in Pu'u 'O'o's crater during the reporting period. Summit inflation S of Halema'uma'u caldera continued.
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