Based on satellite image observations, SVERT reported that steam-and-gas emissions rose from Sarychev Peak on 28 November. Sarychev Peak does not have a seismic network; satellite imagery is the primary tool for monitoring many of the Kurile Islands volcanoes.
Based on analysis of satellite imagery and information from AVO, the Anchorage VAAC reported that on 29 November strong winds in the Katmai area picked up loose ash deposited during the 1912 eruption and carried it SE over Kodiak Island. The Volcano Alert Level remained at Normal and the Aviation Color Code remained at Green.
RVO reported that during 19-25 November light brown to dark gray ash plumes were seen rising 400-500 m above Manam's South Crater. People living on the island reported occasional roaring and rumbling noises. Incandescent material ejected from the crater mainly fell back in and around the crater, but occasionally spilled into the SE and SW valleys.
During 24-30 November, 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 between approximately 140 and 145 m below the crater floor, periodically rising about 20 m above that level. Nighttime incandescence has been visible from the Jaggar Museum on the NW caldera rim since early 2010.
KVERT reported that seismic activity from Karymsky was above background levels during 19-26 November, suggesting that possible ash plumes rose to an altitude of 5.5 km (18,000 ft) a.s.l. during 20-24 November. On 20 November, volcanologists surveying the volcano by helicopter observed gas-and-steam activity and noted that the upper flanks were covered with ash.
Based on analyses of satellite imagery, the Darwin VAAC reported that during 23-27 November ash plumes from Dukono rose to an altitude of 2.4 km (8,000 ft) a.s.l. and drifted 75-130 km W.
Based on information from JMA, the Tokyo VAAC reported that during 24 November-1 December explosions from Sakura-jima produced plumes that rose to altitudes of 1.2-1.8 km (4,000-6,000 ft) a.s.l. and drifted E, SE, and S. During 24 and 28-29 November, pilots reported that ash plumes rose to altitudes of 1.5-3 km (5,000-10,000 ft) a.s.l. and drifted SE and E.
Based on analyses of satellite imagery and information from RVO, the Darwin VAAC reported that on 26 November an ash plume from Ulawun rose to an altitude of 3.7 km (12,000 ft) a.s.l. and drifted 55 km NE.
Wed, 24 Nov 2010, 06:00
The IG reported that on 22 November an explosion ejected incandescent blocks that fell onto the flanks 1.5 km below the crater rim, and produced an ash plume that rose to altitudes of 11-12 km (36,100-39,400 ft) a.s.l. Ashfall was reported in multiple areas to the W and SW. Smaller explosions produced ash plumes that rose to altitudes of 7-8 km (23,000-26,200 ft) a.s.l. and drifted NE and E.
Read allWed, 24 Nov 2010, 06:00
According to the Darwin VAAC, CVGHM stated that an eruption from Tengger Caldera's Bromo cone had occurred on 26 November. An ash plume detected in satellite imagery rose to an altitude of 13.7 km (45,000 ft) a.s.l. and dissipated.
Read allWed, 24 Nov 2010, 06:00
CVGHM reported that avalanches on Merapi's flanks were detected by the seismic network during 25-30 November. Although fog often prevented observations, white and brown plumes rising 100 m above the crater drifted SW on 25 November, and brownish plumes rose 300 m above the crater on 27 November. During 27-30 November, white plumes rose 100-800 m above the crater and drifted W, SW, N, and E.
Read allWed, 24 Nov 2010, 06:00
KVERT reported that seismic activity at Kliuchevskoi did not exceed background levels during 19-26 November. Strong fumarolic activity was observed daily and an ash plume rose to an altitude of 5 km (16,400 ft) a.s.l. on 24 November.
Read allWed, 24 Nov 2010, 06:00
KVERT reported that volcanologists flying around Kizimen by helicopter on 20 November observed several new fumaroles at the summit and SW flank. A small amount of "dust" covered the SW flank, possibly from the new fumaroles. Seismic activity was above background levels during 19-26 November.
Read allWed, 24 Nov 2010, 06:00
Scientists from the Afar Consortium Project observed the lava lake at Erta Ale during 21-23 November. They noted Strombolian activity from the lava lake in the southern pit crater. The lava lake had filled the pit crater and breached the W rim, spilling two lava flows into the main crater.
Read allWed, 24 Nov 2010, 06:00
On 24 November, PHIVOLCS reported that an explosion from Bulusan, recorded for almost six minutes by seismographs, produced an ash plume that rose 1 km above the crater, drifted SW, and dissipated. Ashfall was not observed outside of the permanent danger zone, defined as a 4-km radius from the summit, suggesting that ashfall was confined to the upper flanks. On 26 November steam was emitted from known thermal vents and the crater.
Read allWed, 17 Nov 2010, 06:00
Based on information from JMA, the Tokyo VAAC reported explosions from Suwanose-jima during 18-23 November. Plumes rose to an altitude of 1.8 km (6,000 ft) on 18 November and to an altitude of 2.1 km (7,000 ft) a.s.l. and drifted NE on 21 November.
Read allWed, 17 Nov 2010, 06:00
INSIVUMEH reported that on 17 and 22 November explosions from Santa María's Santiaguito lava dome complex produced ash plumes that rose 0.7-1 km above the crater and drifted E and SW, respectively. On 19 November cloud cover prevented observations of the volcano. Ashfall was reported from farms to the S.
Read allWed, 17 Nov 2010, 06:00
CVGHM reported that during June-15 November seismicity from Rinjani decreased; visual observations indicated no activity since August. On 19 November the Alert level was lowered to Normal, or 1 (on a scale of 1-4).
Read allWed, 17 Nov 2010, 06:00
According to NASA's Earth Observatory, a satellite image shows an ash-and-gas plume rising from Anak Krakatau on 17 November.
Read allWed, 17 Nov 2010, 06:00
KVERT reported that seismic activity at Kliuchevskoi was above background levels during 12-14 November and at background levels during 15-19 November. A weak thermal anomaly over the volcano was detected daily in satellite imagery. Fumarolic activity was observed during 16-18 November; cloud cover prevented observations on the other days.
Read allWed, 17 Nov 2010, 06:00
During 17-23 November, 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 approximately 150 m below the crater floor, periodically rising about 20 m above that level. Nighttime incandescence has been visible from the Jaggar Museum on the NW caldera rim since early 2010.
Read allWed, 17 Nov 2010, 06:00
KVERT reported that seismic activity from Karymsky was above background levels during 11-19 November, suggesting that possible ash plumes rose to an altitude of 5.2 km (17,100 ft) a.s.l. on 13 and 17 November. Satellite imagery showed a thermal anomaly over the volcano during 11-18 November.
Read allWed, 17 Nov 2010, 06:00
KVERT reported that during 12-19 November seismic activity from Gorely was above background levels and volcanic tremor continued to be detected. Gas-and-steam emissions were observed during 12-14 and 16-18 November. Clouds obscured the volcano on the other days.
Read allWed, 17 Nov 2010, 06:00
During 18-22 November, INSIVUMEH reported that explosions from Fuego produced ash plumes that rose as high as 1 km above the crater and drifted S, SW, and W. Incandescent material was ejected 100 m above the crater and avalanches occurred. Ashfall was reported in areas downwind, including in villages 10 km W.
Read allWed, 17 Nov 2010, 06:00
Based on analyses of satellite imagery, the Darwin VAAC reported that on 23 November an ash plume from Dukono rose to an altitude of 2.4 km (8,000 ft) a.s.l. and drifted 130 km W.
Read allWed, 17 Nov 2010, 06:00
CVGHM reported that seismicity from Batur decreased from 1 June to 17 November and fumarolic plumes rose from the crater. On 19 November the Alert level was lowered to Normal, or 1 (on a scale of 1-4).
Read allWed, 17 Nov 2010, 06:00
Based on information from JMA and pilot observations, the Tokyo VAAC reported that during 17, 19-21, and 23 November ash plumes from Sakura-jima rose to altitudes of 1.2-3 km (4,000-10,000 ft) a.s.l. and drifted E, NE, and SE.
Read allWed, 17 Nov 2010, 06:00
Based on Air Force Weather Agency (AFWA) reports, pilot observations, and analyses of satellite imagery, the Washington VAAC reported that on 22 November an eruption from Tungurahua produced an ash plume that rose to an altitude of 7.6 km (25,000 ft) a.s.l. and drifted 37 km SW. Subsequent satellite images showed a detached ash cloud that became difficult to discern in images about 230 km SW of the volcano.
Read all
