The activity at Anak Krakatau has been quieting down to a few small explosions and the growth of a new lava dome in the new crater has slowed. [read all]

After a 36 hrs pause in activity between the evening of 30 June and the morning of 2 July, Anak Krakatau started again with powerful vulcanian explosions. The largest of these explosions were preceded by an inflation and shaking of the active cone or lava dome, triggering rock-slides from its flanks, until the plug gave way in giant explosions ejecting a rapdly expanding mass of red-hot lava, solid rocks, and large amounts of ash, forming plumes of up to 2 km heights. Most of these explosions ejected many blocks into the sea and the forest of Anak Krakatau, and on one location, our boat at around 500m distance from the shore, had to make a quick escape from falling blocks, some of which nevertheless fell beyond the boat, but fortunately did not hit... [read all]

The effusive eruption at Etna's NE flank has ended on the evening of 6 July after 14 months of moderate to weak lava emission, Boris Behncke reports on his flickr website. ...more [read all]

The activity of Anak Krakatau continues with no sign of weakening. As observed during a recent expedition from 4-8 June, strong strombolian activity from the new vent between the old summit vent and the 2007 vent on the S side of the summit cone has filled the collapse crater from 2007 and throws incandescent blocks and bombs to up to 500-700 m above the vent and reaching severl hundreds meters distance. At times, this activity is similar to small lava fountains and at other times, eruptions are more vulcanian-type, rich in ash, producing plumes up to 1 km high. The latter are often accompanied by loud blasts that can be heared many kilometers away and give impressive echoes on the walls of the surrounding caldera. Indivudal explosions are following each other at invervals of 2-5 and rarely more minutes. Photos of this activity can be found here. ...more [read all]

During our expedition on Tanna Island, we observed Yasur during 25-29 May. Activity was a low to moderate levels in that period and only 3 vents in the western crater were active although glow from the eastern crater was seen. Near-continuous spattering was seen from the westernmost vent, and more powerful ejections from the other two vents were observed at intervals of 10-15 minutes, throwing incandescent lava bombs to 100-150 m height. Only small amounts of ash were usually produced. ...more [read all]

The activity of Anak Krakatau is increasing. Direct observations of the crater in late April revealed strong strombolian activity from a vent inside the crater of the 2007-2008 eruption building up a new scoria cone inside this crater. We are planning to revisit the volcano in the first week of June for more observations. [read all]

A strong explosive eruption took place at Sheveluch volcano on May 1st, 2009, sending an ash cloud to 5 km above the volcano. The eruption followed a week of heightened seismicity and might be the start of a stronger eruptive phase. [read all]

A new eruption at Slamet volcano started around 24 April, 2009, last week. Observers report strombolian explosions and ash clouds rising several hundreds of meters from the summit crater. ...more [read all]

Since Friday last week, access to the summit of Stromboli is repopened. Strong activity from several vents at the crater continues. [read all]

It is reported, that strong eruptions at La Cumbre volcano set the rare species of animals on the Galapagos island in danger. Lava is flowing to the sea and strong eruptions occur. ...more [read all]

As observed during an ongoing tour with Tom and a small group, the activity at Stromboli volcano is usually strong. Explosions from several vents, often accompanied by loud thundering noises that can be heard on the whole island, occur frequently from seveal vents, and often throw blocks and incandescent bombs to up to 400 m height. Bombs are sometimes hitting the trail and the Pizzo, which must be considered very dangerous to stay at. The access to the summit is therefore, for the time being, closed to visitors, but the viewpoint on the Sciara del Fuoco at 400 m provides excellent and impressive viewing opportunities. [read all]

After about a week of weak activity, Redoubt exploded again on April 4th. Our team member Marco Fulle is on location and reports heavy thunderstorms from below the 15 km tall ash plume. More details and photos will be available soon. [read all]

As our correspondant from Java reports, new strong strombolian activity has resumed from Anak Krakatau. [read all]

A new eruption started at Llaima volcano on 4 April 09. Lava fountains and stormbolian activity from the summit vents fed lava flows travelling down the slope of the volcano. [read all]

A major eruption of sub-plinian to plinian type took place at Redoubt this morning, sending an ash plume to more than 60,000 ft altitude (>20km), as AVO reports. The eruption, by far the largest in its new cycle of activity so far, started at 09:24 am local time, following a few days with lower activity after the powerful explosions on March 22-23. [read all]

Another larger explosion this morning is reported from Redoubt volcano (source: AVO). [read all]

After about two days of increasing seismicity, a large plinian or sub-plinian explosive eruption is in course at Mt. Redoubt volcano; . ...more [read all]

A new eruption is taking place in the Tonga islands in the South Sea, between the small islands of Hunga Tonga and Hunga Ha'apai, which are the tiny suaerial parts of a large underwater volcano located about 30 km SSE of Falcon Island. The last eruptions in this area were reported in 1912, 1937 and 1988. ...more [read all]

A medium-sized eruption has occurred at Redoubt volcano, Alaska, the USGS / Alaska VolcanoObservatory (AVO) reports. Seismic activity had increased markedly since Sunday afternoon (March 15, 2009) and was followed by 4 hours of continuous volcanic tremor. ...more [read all]

In the time of 24 February to 3rd March strong eruptions & explosions were reported, that threw out ash to altitudes of 10 km and blocks were rolling down the volcano. [read all]

There have been reported explosions in the time of 26 February to 2nd March with ash plumes rosing to altitudes of 1-2 km. [read all]

On 20-27 there was a low activty reported from the lava dome and only some pyroclastic flows were reported. [read all]

On 21-28 February there were eruptions reported that produced ash plumes and also it was indicatedt that the lava dome is still growing. [read all]

On 26 February there was an eruption on Santa María's Santiaguito lava ...more [read all]

On 25 February, a small mud flow traveled several hundred meters. Web camera views and satellite imagery showed no unusual activity. Steam plumes were seen on the web camera on 26 and 1 March. [read all]

It was reported that during 25 February-3 March lava flowed SE from ...more [read all]

It was reported that seismic activity at Karymsky was at background ...more [read all]

Gas plumes and ash plumes were reported from Galeras in the time 25 february to 2nd March. The Alert Level was lowered to yellow. [read all]

During 25 February-3 March, white and gray plumes from Colima were reported to rose to ...more [read all]

During 28 February-1 March explosions were reported from Showa Crater ejecting bombs that landed as far away as 1.3 km. Also deformation was detected and further eruptions on 3 March. [read all]

The AVO raised the level of danger to the color code Yellow, because of increased seismicity. A eruption in near future is possible. [read all]

On 24 February it was reported that a partial dome collapse of Chaitén's Domo Nuevo 1 lava-dome complex a large amount of material accumulated in the basal ring depression surrounding the dome complex and throughout the Blanco River valley. Steam plumes with little ash content and explosions were noted. ...more [read all]