Thu, 30 Sep 2010, 06:39
Karangetang continues to be active, as a recent report from the Indonesian Volcanological Survey shows, kindly translated in the latest SI/USGS Weekly Volcanic Activity Report:
Wed, 29 Sep 2010, 06:00Based on information from JMA, the Tokyo VAAC reported explosions from Suwanose-jima during 3-5 October. A plume drifted E on 5 October.
Wed, 29 Sep 2010, 06:00
MVO reported that during 24 September-1 October activity from the Soufrière Hills lava dome was at a low level. Several pyroclastic flows originating from the W side of the lava dome moved W down Gages Valley and into Spring Ghaut. The largest pyroclastic flow traveled approximately 2 km.
Wed, 29 Sep 2010, 06:00KVERT reported that during 24 September-1 October seismic activity from Shiveluch was above background levels and suggested that possible ash plumes rose from the volcano. Gas-and-steam plumes were observed during 23, 25, and 28-29 September. Satellite imagery analyses showed a daily thermal anomaly on the volcano and gas-and-steam plumes that drifted 70 km SE on 29 September.
Wed, 29 Sep 2010, 06:00
SVERT reported that a diffuse ash plume from Sarychev Peak was detected by satellite on 20 September. Sarychev Peak does not have a seismic network; satellite image observations are the primary tool for monitoring many of the Kurile Islands volcanoes.
Wed, 29 Sep 2010, 06:00CENAPRED reported that during 30 September-4 October steam-and-gas emissions from Popocatépetl occasionally contained small amounts of ash.
Wed, 29 Sep 2010, 06:00
INSIVUMEH reported that during 2 and 4-5 October steam-and-gas plumes rose from Pacaya's MacKenney cone and drifted S.
Wed, 29 Sep 2010, 06:00KVERT reported that during 24 September-1 October seismic activity from Kliuchevskoi was above background levels and lava from the summit crater flowed down the SW flank. Satellite imagery analyses showed a large and intense daily thermal anomaly over the volcano. Ash plumes were seen rising to altitudes of 6.5-7 km (21,300-23,000 ft) a.s.l. on 22 and 24 September, and Strombolian activity was observed during 23, 25, and 28-29 September.
Wed, 29 Sep 2010, 06:00
During 29 September-5 October, HVO reported that activity at Kilauea continued from the summit caldera and the east rift zone. At the summit caldera, the level of the lava-pool surface in the deep pit within Halema'uma'u crater remained mostly stable at about 150 m below the crater floor; periodically the lava rose 15-35 m above that level. Glow from the vent was also visible at night.
Read all
Wed, 29 Sep 2010, 06:00KVERT reported that seismic activity from Karymsky was at background levels during 22-24 September and above background levels during 25-29 September. The elevated seismicity suggested that ash explosions had occurred. Ash plumes rose to altitudes of 3-4.5 km (9,800-14,800 ft) a.s.l. during 25-27 September.
Read all
Wed, 29 Sep 2010, 06:00
INSIVUMEH reported that on 2 October a seismic station near Fuego recorded some explosions and a possible lahar that traveled SE. Weather prevented visual observations. During 4-5 October, explosions ejected incandescent material above the crater and produced ash plumes that rose 500-700 m above the crater.
Read all
Wed, 29 Sep 2010, 06:00Based on analyses of satellite imagery, the Darwin VAAC reported that during 1-4 October ash plumes from Dukono rose to an altitude of 2.4 km (8,000 ft) a.s.l. and drifted 55-205 km W and NW.
Read all
Wed, 29 Sep 2010, 06:00
Based on analyses of satellite imagery, the Darwin VAAC reported that during 29 September-5 October ash plumes from Batu Tara rose to an altitude of 1.5 km (5,000 ft) a.s.l. and drifted 35-95 km W and NW.
Read all
Wed, 29 Sep 2010, 06:00Based on analyses of satellite imagery, the Darwin VAAC reported that on 1 October an ash plume from Bagana rose to an altitude of 2.4 km (8,000 ft) a.s.l. and drifted 75 km NW.
Read all
Wed, 29 Sep 2010, 06:00
Based on a pilot observation, the Tokyo VAAC reported that on 1 October an ash plume from Sakura-jima rose to an altitude of 1.8 km (6,000 ft) a.s.l.
Read all
Wed, 29 Sep 2010, 06:00According to the Washington VAAC, the IG reported ash over Reventador on 30 September. The VAAC stated that a diffuse plume was observed in satellite imagery drifting NW, although ash was not identified.
Read all
Wed, 29 Sep 2010, 06:00
Based on analyses of satellite imagery, pilot observations, and SIGMET notices, the Buenos Aires VAAC reported that during 30 September-3 October ash plumes from Planchón-Peteroa rose to altitudes of 3-6.1 km (10,000-20,000 ft) a.s.l. and drifted NW, NNE, E, and SE.
Read all
Wed, 29 Sep 2010, 06:00OVPDLF reported that on 29 September seismicity from Piton de la Fournaise remained high. Earthquakes were located at the base of the volcano, and inflation was noted particularly in the E. A significant number of landslides were detected in the crater.
Read all
Wed, 29 Sep 2010, 06:00
INGEOMINAS reported a gradual increase in seismicity from Nevado del Ruiz on 30 September. Earthquakes were located beneath the Arenas crater at depths of 0.5-2 km. The largest earthquake was M 1.9.
Read all
Wed, 29 Sep 2010, 06:00The Popayán Volcano Observatory (INGEOMINAS) reported that during 29 September-5 October gas plumes from Nevado del Huila, observed with the Tafxnú and Maravillas web cameras, rose 2.5 km above the summit. Incandescence from the extruding lava dome and collapsing material was also noted. Based on a SIGMET issued from the Bogota MWO, the Washington VAAC reported that on 1 October an ash plume rose to an altitude of 7.6 km (25,000 ft) a.s.l.
Read all
Sat, 25 Sep 2010, 07:38
Unrest at Piton de la Fournaise continues and the volcano observatory has raised alert to level 1 (eruption in near or immediate future probable). Deformation at the summit and seismic activity indicate ascent of fresh magma beneath Dolomieu crater.
Wed, 22 Sep 2010, 06:00Based on information from JMA, the Tokyo VAAC reported explosions from Suwanose-jima during 22, 25, and 27-28 September. A pilot observed an ash plume on 22 September that rose to an altitude of 2.1 km (7,000 ft) a.s.l. and drifted SE.
Read all
Wed, 22 Sep 2010, 06:00
MVO reported that during 17-24 September activity from the Soufrière Hills lava dome was at a low level. Heavy rains caused lahars during 19-20 September in the Belham valley to the NW. One pyroclastic flow traveled 1.5 km E down the Tar River valley on 21 September.
Read all
Wed, 22 Sep 2010, 06:00KVERT reported that during 17-24 September seismic activity from Shiveluch was above background levels and suggested that possible ash plumes rose to an altitude of 3.5 km (11,500 ft) a.s.l. Satellite imagery analysis showed a thermal anomaly on the volcano. Gas-and-ash plumes were observed on 21 September, and satellite imagery showed ash plumes drifting 16 km SE the same day.
Read all
Wed, 22 Sep 2010, 06:00
The IG reported that on 28 September three seismic events from Reventador were recorded. Cloud cover prevented observations during the first event. During the second period of increased seismicity, observers noted that a steam plume with a small amount of ash rose 400-500 m above the crater and drifted N.
Read all
Wed, 22 Sep 2010, 06:00During 22-28 September HVO reported that activity at Kilauea continued from the summit caldera and the east rift zone. At the summit caldera, the level of the lava-pool surface in the deep pit within Halema'uma'u crater remained mostly stable around 160 m below the crater floor; periodically the lava rose 15-35 m above that level. Glow from the vent was also visible at night.
Read all
Wed, 22 Sep 2010, 06:00
KVERT reported that seismic activity from Karymsky was above background levels during 16-20 September and suggested possible ash explosions. Seismicity was at background levels on 21 and 22 September. Cloud cover prevented satellite image views. The Aviation Color Code level remained at Orange.
Read all
Wed, 22 Sep 2010, 06:00Based on analyses of satellite imagery, the Darwin VAAC reported that during 21-25 September ash plumes from Dukono rose to an altitude of 2.4 km (8,000 ft) a.s.l. and drifted 35-95 km W.
Read all
