Semeru Volcano, Indonesia

Activity has increased at Semeru volcano, Indonesia. The volcano has been on reduced level 2 alert since 16th July 2009. Eruptions were observed at the volcano on 9,14, and 17 June 2011. Activity resumed at the end of December 2011. Between 29th December 2011 and 15th January 2012 there were eight explosions at Jonggring Seloko crater, sending ash up to 600 m high. Incandescent fallout was observed 200 m radius from the crater. On 2nd February 2012 a pyroclastic flow reached 2.5 km from the crater. The alert status at Semeru volcano was raised to Level 3 (out of a maximum 4) on 3rd February 2012. A 4 km exclusion zone has been placed on the SE slopes of the volcano where pyroclastic flows occur. Climbers are advised to remain at least 1 km from Jonggring Seloko crater.