CVGHM reported that during 1-25 June white plumes rose 50-200 m above Tompaluan crater, in the saddle between the Lokon-Empung peaks. On 26 June a phreatic eruption ejected material that fell around the crater and produced a gray plume that rose 400 m above the crater rim and drifted N. Seismicity increased the next day and white plumes rose 50-200 m above the crater.
A satellite image of Nabro acquired on 29 June showed a clear view of the caldera and the vent within the active crater near the middle of the caldera. Lava flows to the W, and within the crater (E and S of the vent), continued to be hot. A brown ash plume rose from the vent and drifted S.
OVDAS-SERNAGEOMIN reported that the eruption continued from the Cordón Caulle rift zone, part of the Puyehue-Cordón Caulle volcanic complex. During 29-30 June weather conditions prevented views of the eruption plume by cameras installed around the volcano as well as by satellite. On 1 July a white plume, possibly with lower ash content, rose 3 km above the crater and was observed in satellite imagery drifting 200 km N.
CVGHM reported that during June diffuse white plumes from Soputan rose 25-150 m. During 21 June-2 July seismicity increased, and on 2 July the Alert Level was raised to 3 (on a scale of 1-4). Visitors and residents were discouraged from going within a 6-km radius of the crater and climbing the volcano was prohibited.
According to pilot observations, the Tokyo VAAC reported that ash plumes rose from Sakura-jima to altitudes of 2.1-2.4 km (7,000-8,000 ft) a.s.l on 28 and 30 July. Reports from JMA stated that plumes rose to altitudes of 1.8-2.1 km (6,000-7,000 ft) a.s.l. during 30 June-1 July.
Based on analyses of satellite imagery, the Darwin VAAC reported that during 1-3 July ash plumes from Batu Tara rose to an altitude of 2.4 km (8,000 ft) a.s.l. and drifted 75 km NW.
Based on analyses of satellite imagery, the Darwin VAAC reported that on 1 July an ash plume from Dukono rose to an altitude of 3 km (10,000 ft) a.s.l. and drifted 110 km E.
KVERT reported moderate seismic activity at Karymsky during 24 June-1 July. A thermal anomaly was detected in satellite imagery on 25, 28, and 30 June. The Aviation Color Code remained at Orange.
Wed, 29 Jun 2011, 06:00
HVO reported that two lava lakes at Kilauea were active during 29 June-5 July. The level of the summit lava lake fluctuated deep in the vent inset within the E wall of Halema'uma'u Crater. Periodic measurements indicated that the gas plume from the vent continued to deposit variable amounts of ash nearby.
Read allWed, 29 Jun 2011, 06:00
KVERT reported that during 24 June-1 July seismicity from Kizimen was above background levels and volcanic tremor continued to be detected. A thermal anomaly was detected in satellite imagery during 23-25, 28, and 30 June. The Aviation Color Code remained at Orange.
Read allWed, 29 Jun 2011, 06:00
INSIVUMEH reported that on 29 June a lahar descended Santa María's Nima I drainage, passing by the Observatory Vulcanológico de Santiaguito (OVSAN), about 5 km S of the lava dome. The lahar was 1.5 m high, 25 m wide, and carried fine material as well as different-sized blocks. During 3-4 July a steam plume rose 300 m above the crater and drifted SW.
Read allWed, 29 Jun 2011, 06:00
KVERT reported moderate seismic activity at Shiveluch during 24 June-1 July. Ground-based observers noted that ash plumes rose to an altitude of 7.5 km (24,600 ft) a.s.l. Satellite imagery showed a thermal anomaly on the lava dome on 23 and 24 June and ash plumes that drifted 107 km NW on 24 June.
Read allWed, 29 Jun 2011, 06:00
PHIVOLCS reported that during the previous 11 weeks, since the Alert Level for Taal was raised to 2 (on a scale of 0-5) on 9 April, the number of earthquakes recorded daily gradually declined, hydrothermal activity abated, carbon dioxide gas emissions decreased, ground temperature and total magnetic field measurements in the main crater showed no significant changes, and deformation data showed no signs of increasing pressure. On 5 July the Alert Level was lowered from 2 to 1.
Read allWed, 22 Jun 2011, 09:53
The eruption at Nabro volcano is continuing. The explosive phase seems to have ended, but there is still a large white steam and gas plume coming from the volcano and a large hot spot is visibe on the MODIS/Terra satellite images. Most likely, large lava flows are still being erupted.
Read allWed, 22 Jun 2011, 06:00
On 27 June, the Vanuatu Geohazards Observatory reported that data collected from Ambrym's monitoring network showed significant degassing daily and occasional explosions in the crater. Field observers noted that the level of the lava lakes was high. During June, villages reported minor ashfall and that acid rain affected vegetables in some areas W, S, and E.
Read allWed, 22 Jun 2011, 06:00
Based on notifications from JMA, the Tokyo VAAC reported that on 23 June an eruption from Kirishima's Shinmoe-dake (Shinmoe peak) produced a plume that rose to an altitude of 1.8 km (6,000 ft) a.s.l. and drifted E.
Read allWed, 22 Jun 2011, 06:00
A satellite image of Nabro acquired on 22 June showed a gas-and-ash plume rising from the caldera and drifting W. According to a news article, the eruption resulted in at least seven deaths, injured many, and displaced thousands in Eritrea, and affected about 5,000 Ethiopians living near the border. Two satellite images acquired on 24 June show the erupting vent, plumes and emissions, and lava flows in detail.
Read allWed, 22 Jun 2011, 06:00
OVDAS-SERNAGEOMIN reported that the eruption continued from the Cordón Caulle rift zone, part of the Puyehue-Cordón Caulle volcanic complex. During 22 and 24-26 June cameras installed around the volcano recorded ash plumes that rose 2-4 km above the crater and drifted NW, N, and NE. Although meteorological cloud cover prevented camera observations on 23 and 28 June, the Buenos Aires VAAC reported that ash clouds detected in satellite imagery rose to altitudes of 4-4.6 km (13,000-15,000 ft) a.s.l. and drifted E and NE.
Read allWed, 22 Jun 2011, 06:00
Based on information from JMA, the Tokyo VAAC reported that on 22, 25, and 28 June plumes from Sakura-jima rose to altitudes of 1.8-2.4 km (6,000-8,000 ft) a.s.l. and drifted N and NE. During 27-28 June, pilots observed ash plumes that rose to altitudes of 2.1-3 km (7,000-10,000 ft) a.s.l.
Read allWed, 22 Jun 2011, 06:00
Based on analyses of satellite imagery, the Darwin VAAC reported that during 22-25 June ash plumes from Batu Tara rose to an altitude of 2.4 km (8,000 ft) a.s.l. and drifted 35-75 km W and NW.
Read allWed, 22 Jun 2011, 06:00
INSIVUMEH reported that during 23-24 June explosions from Fuego produced ash plumes that rose 150-200 m above the crater and drifted W. Incandescent bursts rose 100 m above the crater. During 23-24 and 27-28 June lava flows traveled 200 m down the Ceniza drainage to the SW and detached blocks reached vegetated areas.
Read allWed, 22 Jun 2011, 06:00
KVERT reported moderate seismic activity at Karymsky during 17-24 June and that possible ash plumes rose to an altitude of 3.9 km (12,800 ft) a.s.l. Satellite imagery showed a thermal anomaly on the volcano during 16-17 June. The Aviation Color Code remained at Orange.
Read allWed, 22 Jun 2011, 06:00
HVO reported that two lava lakes at Kilauea were active during 22-28 June. The level of the summit lava lake fluctuated deep in the vent inset within the E wall of Halema'uma'u Crater. A gas plume from the vent drifted SW, depositing variable amounts of ash nearby.
Read allWed, 22 Jun 2011, 06:00
KVERT reported that during 16-24 June seismicity from Kizimen was above background levels and volcanic tremor continued to be detected. Seismic data indicated that possible ash plumes rose to an altitude of 5.2 km (17,000 ft) a.s.l. during 16-17 June.
Read allWed, 22 Jun 2011, 06:00
Based on SIGMET notices, the Buenos Aires VAAC reported that during 24-25 June ash plumes from Planchón-Peteroa rose to an altitude of 4.6 km (15,000 ft) a.s.l. and drifted W, NE, and E. On 27 June satellite imagery showed a gas-and-steam plume, possibly containing ash, drifting 110 km NW.
Read allWed, 22 Jun 2011, 06:00
KVERT reported moderate seismic activity at Shiveluch during 17-24 June. Seismic data indicated that possible ash plumes rose to an altitude of 10 km (32,800 ft) a.s.l. on 19 June and to an altitude of 6 km (19,700 ft) a.s.l. on 18 and 21 June.
Read allSun, 19 Jun 2011, 10:12
The eruption of Puyehue Cordon-Caulle has decreased in intensity, although near continuous ash emissions are still going on. In its latest bulletin on Friday, SERNAGEOMIN reports the height of the ash column did not exceed 3 km, and the plume is drifting at flight level 200 (20,000 ft / ca. 6 km) altitude into Argentina, where the ash fall has become a major problem in several towns and villages near the border, in particular in and around Bariloche. Electricity and water supply have become damaged, impacting the tourist industry severely. As well, faramin, especially of sheep, is suffering heavy losses.
Fri, 17 Jun 2011, 15:13
Nabro SO2 plume 14-17 June (OMI data, KNMI.FMI/NASA). Original images from ESA SACS, composite from The Volcanism Blog (volcanism.wordpress.com)
The eruption at Nabro volcano in Eritrea that started 5 days ago seems to have decreased a lot in intensity, or even have stopped.
Read all
