A series of earthquakes occurred near Harrat Lunayyir volcano in north east Saudi Arabia on Tuesday 19th May 2009. The largest earthquake measured magnitude 5.7. The earthquakes produced cracks in the ground. A total of 2,289 people, including 326 families, were evacuated from a 20 km radius around the volcano, 240 km north of Madinah. [...]
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Dome growth continues in the summit crater at Chaiten volcano, Chile. The surface morphology of the dome is complex and uneven. The central pinnacle of the dome has broken into three main blocks. The tallest spine is 100 m high. Continuing rapid growth of the dome creates a collapse risk with the subsequent hazard of [...]
There have been some reports in the media about a possible flank eruption at Nyiragongo volcano. These reports may be incorrect. There has been an active lava lake in the summit crater at Nyiragongo volcano for several years. Satellite hotspot images of the lava lake regularly produce pixels which are subject to positional errors. It [...]
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Eruptions are continuing at Krakatau volcano in Indonesia from a crater on the SW side of the cone. A volcanic ash advisory from Darwin VAAC reported ash to 10,000 drifting NW of the volcano. Today the level of alert at Krakatau was raised from Waspada (Level 2) to Siaga (Level 3), out of a maximum [...]
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An increase in seismic activity has been reported at Rinjani volcano in Indonesia. On 2nd May there were three explosion earthquakes recorded. A white plume was emitted 1000 m above the eruption point. The alert level at the volcano has been raised from Normal (Level I) to Waspada (Level II). The summit has been closed [...]
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On 28th April 2009 there were reports of fumaroles on the northern sector of Descabezado Grande volcano, at various times of the day. Photos taken from Armerillo, 33 km SW of the volcano, showed elevated fine pale brown emissions from NE flank of the volcano. The emissions may have been from minor eruptive activity, or [...]
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