Based on analyses of satellite imagery, the Darwin VAAC reported that during 28-29 October ash plumes from Rabaul caldera's Tavurvur cone rose to an altitude of 2.4 km (8,000 ft) a.s.l. and drifted 35-45 km N, E, and SE.
CENAPRED reported that on 29 October a small explosive event from Popocatépetl produced an ash plume that rose to an altitude of 6.4 km (21,000 ft) a.s.l.
CVGHM reported that from August to 29 October seismicity from Anak Krakatau, and the occurrence of eruption plumes, decreased. The Alert Level was lowered to 2 (on a scale of 1-4).
KVERT reported that during 23-30 October seismic activity from Kliuchevskoi was above background levels; tremor increased on 26 October. Strombolian activity ejected tephra 200 m above the crater and fumarolic activity was occasionally noted. Satellite imagery revealed a daily thermal anomaly at the volcano.
During 28 October-3 November, HVO reported that lava flowed SE from underneath Kilauea's Thanksgiving Eve Breakout (TEB) and rootless shield complex through a lava tube system, reaching the Waikupanaha ocean entry. Lava began entering the ocean at a second location, 700 m farther to the W, on 31 October. Thermal anomalies detected in satellite images and visual observations revealed active surface lava flows.
KVERT reported that seismic activity at Karymsky was above background levels during 23-27 and 30 October, a possible indication that ash plumes rose to an altitude of 3.7 km (12,100 ft) a.s.l. No seismic data was available on 22 and 28 October. Analyses of satellite imagery revealed an ash plume that drifted 120 km E on 23 October, and a thermal anomaly during 23-26 and 29 October.
Based on analyses of satellite imagery, the Darwin VAAC reported that on 31 October an ash plume from Dukono rose to an altitude of 1.5 km (5,000 ft) a.s.l. and drifted 35-110 km NE and N.
Based on analyses of satellite imagery, the Buenos Aires VAAC reported that on 30 October a diffuse ash plume from Chaitén's lava-dome complex rose possibly mixed with steam and gas drifted SSE. On 1 November, a plume drifted 20 km W.
Wed, 28 Oct 2009, 06:00
Based on analyses of satellite imagery, the Darwin VAAC reported that on 1 November an ash plume from Barren Island rose to an altitude of 1.8 km (6,000 ft) a.s.l. and drifted about 55-75 km W.
Read allWed, 28 Oct 2009, 06:00
Based on information from JMA, the Tokyo VAAC reported that explosions from Sakura-jima during 28 October-3 November produced plumes that rose to altitudes of 1.2-2.7 km (4,000-9,000 ft) a.s.l. Some plumes drifted W, SW, S, SE, and NE.
Read allWed, 28 Oct 2009, 06:00
MVO reported that during 23-30 October seismic activity from the Soufrière Hills lava dome was at a slightly lower level that the previous week. Numerous pyroclastic flows occurred in most of the major drainage valleys and rockfalls were concentrated in the S. Heavy rainfall caused lahars in the Belham Valley to the W.
Read allWed, 28 Oct 2009, 06:00
INGEOMINAS reported that on 28 October a pulse of tremor from Nevado del Huila was followed by an ash plume that, according to the Washington VAAC, rose to an altitude of 8.3 km (27,200 ft) a.s.l. On 30 October and 2 November overflights revealed a high rate of lava dome growth compared to the previous observation on 23 October. An ash layer covered the W part of Pico Central.
Read allWed, 28 Oct 2009, 06:00
Based on analyses of satellite imagery, the Darwin VAAC reported that during 1-2 November ash plumes from Manam rose to an altitude of 2.1 km (7,000 ft) a.s.l. and drifted 35-55 km NW and N.
Read allWed, 28 Oct 2009, 06:00
Based on a pilot observation and analyses of satellite imagery, the Darwin VAAC reported that on 3 November an ash plume from Karangetang rose to an altitude of 3 km (10,000 ft) a.s.l. and drifted 90-185 km W.
Read allWed, 28 Oct 2009, 06:00
On 30 October, INGEOMINAS reported that the Alert Level for Galeras was raised to II (Orange; "probable eruption in term of days or weeks"). Since 27 October, degassing decreased and seismicity increased, reflecting conditions seen prior to previous eruptions. On 3 November, INGEOMINAS stated that gas emissions had been low during the previous days, and seismicity had decreased that day.
Read allWed, 28 Oct 2009, 06:00
KVERT reported that on 26 October a gas-and-steam plume from Ebeko was seen by observers in Severo-Kurilsk, about 7 km E of Ebeko, rising 300 m above the crater and drifting 1-2 km NNE. There was no evidence of ash deposits on the snow cover. Gas-and-steam plumes rose 250 m above the crater and drifted 2 km E on 28 October and NNE on 29 October.
Read allWed, 21 Oct 2009, 06:00
KVERT reported that during 16-23 October seismic activity from Shiveluch was above background levels and possibly indicated that ash plumes rose to an altitude of 4.5 km (14,800 ft) a.s.l. Analyses of satellite imagery revealed a large thermal anomaly over the lava dome. According to video camera data and visual observations, multiple hot avalanches traveled down the lava dome.
Read allWed, 21 Oct 2009, 06:00
Based on analyses of satellite imagery, the Washington VAAC reported that on 22 October multiple ash plumes from Santa María's Santiaguito lava dome complex drifted less than 20 km SW. On 23 and 26 October, INSIVUMEH reported that explosions produced ash plumes that rose above Caliente dome to altitudes of 3-3.3 km (10,000-10,800 ft) a.s.l. The plumes drifted W and SE and caused ashfall in areas downwind.
Read allWed, 21 Oct 2009, 06:00
RVO reported that during 16-22 October diffuse white plumes and gray ash plumes rose from Rabaul caldera's Tavurvur cone; ash plumes rose 700 m above the crater. Ashfall was reported in areas to the NW.
Read allWed, 21 Oct 2009, 06:00
On 23 and 26 October, INSIVUMEH reported that white and blue plumes from Pacaya's MacKenney cone rose 50-150 m and drifted W and SW. Multiple lava flows on the S flank traveled 75-350 m SSW.
Read allWed, 21 Oct 2009, 06:00
During 21-27 October, HVO reported that lava flowed SE from underneath Kilauea's Thanksgiving Eve Breakout (TEB) and rootless shield complex through a lava tube system, reaching the Waikupanaha ocean entry on most days. Thermal anomalies detected in satellite images and visual observations revealed active surface lava flows. For a few days an active lava flow advanced on the coastal plain, burning vegetation and pavement along the former Kalapana access road.
Read allWed, 21 Oct 2009, 06:00
KVERT reported that seismic activity at Karymsky was above background levels during 16-23 October and possibly indicated that ash plumes rose to an altitude of 3.9 km (12,800 ft) a.s.l. The Level of Aviation Color Code remained at Orange. Based on information from KEMSD, the Tokyo VAAC reported that eruptions during 24-25 October produced plumes that rose to altitudes of 3.4-3.7 km (11,000-12,000 ft) a.s.l.
Read allWed, 21 Oct 2009, 06:00
Based on analyses of satellite imagery and a pilot observation, the Washington VAAC reported that on 20 October an apparent ash plume from Fuego drifted SSW. On 21 October, multiple ash emissions resulted in an ash cloud that drifted 55 km S. Emissions were also reported the next day.
Read allWed, 21 Oct 2009, 06:00
Based on analyses of satellite imagery, the Darwin VAAC reported that during 22-23 and 26-27 October ash plumes from Dukono rose to altitudes of 2.1-2.4 km (7,000-8,000 ft) a.s.l. and drifted 45-95 km NE and E.
Read allWed, 21 Oct 2009, 06:00
The government of the state of Colima reported that on 22 October a gray plume from Colima rose to an altitude of 4 km (13,100 ft) a.s.l. and drifted SW. The next day, white plumes drifted NE and N, one at an altitude of 4.2 km (13,800 ft) a.s.l.
Read allWed, 21 Oct 2009, 06:00
Based on analyses of satellite imagery, the Darwin VAAC reported that on 27 October ash plumes from Batu Tara were seen drifting 65 km W and NW at an altitude of 2.1 km (7,000 ft) a.s.l.
Read allWed, 21 Oct 2009, 06:00
Based on information from JMA, the Tokyo VAAC reported that explosions from Sakura-jima during 21-22, 24-25, and 27-28 October produced plumes that rose to altitudes of 1.5-2.4 km (5,000-8,000 ft) a.s.l. Some plumes drifted W, SW, S, and SE.
Read allWed, 21 Oct 2009, 06:00
MVO reported that during 16-25 October activity from the Soufrière Hills lava dome was at a high level; a new lava dome first reported on 9 October continued to grow in the summit region on the W side. The new dome was considerably higher than the older lava dome that is to the E. Seismicity was high and cycles of low-level tremor occurred at regular intervals.
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