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Worldwide Volcano News and Updates:Tue, 29 Jul 2008, 16:05 A new eruption is reported from Reventador volcano. The Ecuadorian Institute of Geophysics (Istituto Geofisico, IG) reports eruptive tremor starting on 27 July from 15h00 local time. In the evening of that day, incandscence became visible from the summit of the volcano, indicating lava flows. An ash plume rose to 500-2000m and light ashfall was reported in the area around Olmedo. ...moreReventador's last eruption was in March 2007. --- [ less] [ read all]
Tue, 29 Jul 2008, 07:16 After several months of quiet, a major collapse of the lava dome of Soufrière Hills took place on 28 July, 2008. ...moreThe collapse started at 11:27 pm local time without any precursory activity. Part of the western side of the lava dome collapsed generating pyroclastic flows that reached Plymouth and the sea. There were also a few explosions from the dome during the collapse, with [ less] [ read all] Thu, 24 Jul 2008, 12:31 RVO reported that during 12-18 July, ash plumes from Rabaul caldera's Tavurvur cone drifted NW and W. Ashfall was reported in areas downwind including significant accumulation in Rabaul town (3-5 km NW). ...more--- (from Ima Itikarai, Rabaul Volcano Observatory (RVO), via the SI/USGS Weekly Volcanic Activity Report 16-22 July 2008) [ less] [ read all] Thu, 24 Jul 2008, 12:27
On 19 July, activity at Okmok increased as interpreted from seismicity. Possibly, ash plumes rose to altitudes of 7.6-9.1 km (25,000-30,000 ft) a.s.l. The Volcano Alert Level was raised to Warning and the Aviation Color Code was raised to Red. ...moreOn 20 July, seismicity decreased. Satellite imagery revealed that an ash plume about 20 km from Okmok drifted SE at an altitude of 3.7 km (12,000 ft) a.s.l. Additional ash plumes observed on satellite imagery and spotted by pilots rose to altitudes of 4.6-6.1 km (15,000-20,000 ft) a.s.l. During 21-22 July, ash plumes rose to altitudes of 6.1-9.1 km (20,000-30,000 ft) a.s.l. and drifted SE. [ less] [ read all] Thu, 24 Jul 2008, 12:19 A new eruption seems to have started at Cleveland volcano on 21 July. AVO raised the Volcano Alert Level as there were reports from pilots and fishing boats in the area, observing a new ash eruption that had started at about noon that day. Pilots reported that an ash-and-steam plume rose to ...morealtitudes of 4.6-5.2 km (15,000-17,000 ft) a.s.l. and drifted SE. Observations of satellite imagery on 22 July revealed a steam plume [ less] [ read all]
Tue, 22 Jul 2008, 12:22 SERNAGEOMIN reported that after increased seismicity at Llaima on 14 July, an ash plume rose to an altitude of 5.6 km (18,400 ft) a.s.l. Less than two hours later, very intense orange and red incandescence was seen through breaks in the cloud cover near the summit and at the base of the W flank. At 1915 a vigorous Strombolian eruption ejected incandescent pyroclastic material from the N vent in the main crater to heights of 500 m above the summit. ...moreSeismicity and the intensity of the explosions decreased later that day. On 15 July, diffuse ash emissions rose to an altitude of 3.4 km (11,200 ft) a.s.l. Ash and tephra covered areas of the SSE flank. Seismic activity decreased during 16-18 July. [ less] [ read all] Sun, 20 Jul 2008, 07:34 The eruption at the May 13 fissure at Etna volcano continues. The lava flow into Valle del Bove is still alimentated, although the intensity of spattering from the upper vents at 2800 m elevation has decreased since 17 July. Wed, 16 Jul 2008, 07:11
 image showing the extent of the sulfur dioxide gas cloud from the eruption of Okmok Volcano. The large red mass is from the main explosive phase on 12 July at 2130 UTC and is at an estimated height of 50,000 ft above sea level. The north-south dimension of this cloud is about 850 miles. Current emissions from the volcano are at a lower altitude of approximately 30,000 to 35,000 feet. Other OMI data (not shown) indicate that volcanic ash is mixed with the sulfur dioxide cloud.
Okmok Volcano continues to erupt. Seismicity, though below this weekend's intensity, has remained steady over the last 24 hours. Satellite data continue to show a long (~250 km) plume moving east; the height of the plume is approximately 30,000 ft above sea level. Mon, 14 Jul 2008, 12:09
The strong eruption at Okmok continues based on ongoing seismic activity and satellite observations. Ash emissions continue reaching altitudes of 30,000 - 35,000 ft asl, and are posing a large hazard to all aircraft in the area. Sun, 13 Jul 2008, 07:02 A large explosive eruption at Okmok volcano began at approximately 11:43 AM local time on July 12 and continues. An ash cloud with a top of at least 30,000-35,000 ft. height above sea level is present. ...moreThe main mass of the ash cloud is moving southeast from the volcano, with lesser amounts of ash moving eastward. Ash fall has been reported on eastern Umnak Island and in Unalaska/Dutch Harbor. [ less] Show more newsFri, 11 Jul 2008, 07:18 A new phase of strombolian activity accompanied by lava flows took place at Llaima volcano on July 11.
Fri, 11 Jul 2008, 07:18 A new phase of strombolian activity accompanied by lava flows took place at Llaima volcano on July 11. Fri, 11 Jul 2008, 07:18
A new phase of strombolian activity accompanied by lava flows took place at Llaima volcano on July 11. Fri, 4 Jul 2008, 14:04 Llaima volcano is active again. On 1 July, a lava flow was seen on the W flank prompting authorities to evacuate about 20-30 people and warn others of possible further evacuations. The lava flow descended the W flank to 800-1000 m from the crater.
Sat, 21 Jun 2008, 12:02 Over the past weeks, activity at from Santa María's Santiaguito lava dome complex was mild to low, producing produced ash plumes rising to 4.1-4.4 km (13,500-14,400 ft) a.s.l. Sat, 21 Jun 2008, 11:58
Mild strombolian activity continues at Fuego volcano. Incandescent material is thrown out up to 50 m above the vent on the summit crater and a small lava flow was observed on 13 June, travelling 100 m towards the Santa Teresa ravine on the W flank. Ash plumes reach altitudes of 3.9-4.4 km (12,800-14,400 ft) a.s.l. ...moreOn 13 June, lahars caused by heavy rainfall descended the Santa Teresa (W) and Ceniza (SW) ravines. [ less] Sat, 21 Jun 2008, 11:58 Mild strombolian activity continues at Fuego volcano. Incandescent material is thrown out up to 50 m above the vent on the summit crater and a small lava flow was observed on 13 June, travelling 100 m towards the Santa Teresa ravine on the W flank. Ash plumes reach altitudes of 3.9-4.4 km (12,800-14,400 ft) a.s.l. ...moreOn 13 June, lahars caused by heavy rainfall descended the Santa Teresa (W) and Ceniza (SW) ravines. [ less] Sat, 21 Jun 2008, 11:56 Strombolian activity with frequent ash explosions creating plumes of up to about 1 km height continue at Anak Krakatau.
Sat, 21 Jun 2008, 11:54 Elevated gas output and high lake temperatures continue, while volcanic tremor has declined. Unrest continues at Ruapehu and it remains unclear if this is a sign of further eruptions. The volcano last erupted on September 25 2007. The Alert Level remains at Level 1. ...moreWed, 18 Jun 2008, 13:46
The eruption at Etna continues with strombolian activity from two vents in the upper part of the May 13 fissure and the emission of a lava flow into Valle del Bove. Show more newsMon, 16 Jun 2008, 14:08
The eruption at Etna volcano continues and has even increased slightly, according to observations during our recent tour (7-15 June) and informataion from INGV Catania. Two vents on the May13 fissure continue to display weak to moderate strombolian activity and feed an active lava flow into Valle del Bove, with fronts reaching 1900 m elevation, NE of the Monti Centenari. Thu, 12 Jun 2008, 09:39 Small pyroclastic flows and rockfall avalanches have been observed at Semeru since 22 May. The pyroclastic flows travelled a maximum distance of 2.5 km from the active crater. ...moreThu, 12 Jun 2008, 09:30 Chaiten's new lava dome continues to grow rapidly inside the crater left by the sub-plinian eruption on 2 May. Over the past week, ash plumes produced by explosions rose to maximum altitude of 3 km (10,000 ft) a.s.l. and drifted SE. ...moreSENAGEOMIN reported from overflight observations that about 2500 hectares (6,200 acres) of forest on the N and NE flanks of the volcano were burned by pyroclastic flows or lateral explosions. The area around Chaiten remains closed. Slowly the evacuated town of Chaiten is being buried under mud flows (lahars). [ less] [ read all] Tue, 10 Jun 2008, 11:42 As the Observatorio Vulcanológico y Sismológico de Costa Rica reports in a press bulletin, on Friday 06, June 2008 at 9:15am (15:15GMT) a large hot avalanche of unknown volume of blocky lava that had been accumulating at the summit since March 2007 rolled down the SW slopes of Arenal volcano, Costa Rica. ...moreThe present collapse provoked a scar of some 800m long from the summit to the bottom. Lose, dry, incandescent material was canalized down the slope conforming a wide chaotic fan, at aprox 900m asl. Material rolling down pulverized and generated a tall plume of gases and dust that provoked panic in tourists and park rangers located some 2 km away, on the W side. [ less] [ read all] Sun, 8 Jun 2008, 08:13
As INGV Catania reports, the mild strombolian activity and small effusion of lava from the 13 May eruptive fissure continue. Sun, 8 Jun 2008, 07:36 Soputan volcano started to erupt again on 6 June, producing ash plumes 2-3 km heigh and pyroclastic flows triggered by its growing lava dome that reached 4 km distance from the volcano.
Sat, 7 Jun 2008, 15:30 As the Geophysical Institute of Ecuador reports, the eruption at Cerro Azul has resumed. A new eruptive fissure, about 400-500 long, opened on the SE flank on 3 June at 20h45 local time. Initial 60 m high lava fountaining and new lava flows were produced. The lava flows are directed towards the south coast of the island. Satellite imagery shows a 50 km long ash and gas plumes drifting north.
Thu, 5 Jun 2008, 16:29 Over the last days, the activity at the May 13 eruptive fissure has been slighlty increasing. Charles Rivière reports lava fountaining took place at the upper vents of the fissure during the night of 4-5 June. Thu, 5 Jun 2008, 16:22
The lava flow at Cerro Azul volcano has already stopped on 3 June. It flowed ca. 10 km from the crater on the SE flank without causing much damage to wildlife. The lava followed the same path as the lava flows from the Cerro Azul volcano during eruptions in 1978 and 1998. ...moreWether this is already the end of the eruption or only a pause as in 1998, will be first evident in the next days. [ less] Tue, 3 Jun 2008, 10:51 Strombolian activity with frequent ash explosions are continuing at Anak Krakatau. Ash plumes reach approximately 1 km height.
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