Strombolian activity at Anak Krakatau on 6 June 2009

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.
As of today (June 15), reports from the local observatory indicate that this activity still goes ...

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.

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.

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

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.
 
 

Powerful explosion from the central crater, throwing bombs onto and beyond Pizzo

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.

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

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.

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.
Pilots and residents from adjacient islands observed a huge ash and steam plume from the location of the eruption, rising up to 5-7 km.
Photos and more detailed coverage on this eruption can be found on the excellent blogsiteThe volcanism Blog.
 

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.

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

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

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

On 26 February there was an eruption on Santa María's Santiaguito lava
dome complex. Also on 27 Fabruary and avalanches were seen SW of
Caliente dome.

It was reported that during 25 February-3 March lava flowed SE from
underneath Kilauea's Thanksgiving Eve Breakout through a lava tube system, reaching the Waikupanaha
ocean entry. A sizable collapse of the Waikupanaha bench was seen on 28 February. Thermal
anomalies suggested surface lava flows.
The vent in Halema'uma'u crater continued to produce a white plume; incandescence was seen from the vent.
 

It was reported that seismic activity at Karymsky was at background
levels during 21-28 February. Some small ash plumes occured and the lava dome is still growing.

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

During 25 February-3 March, white and gray plumes from Colima were reported to rose to
altitudes of 4 km. Eruptions in summit crater.

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.

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