On April 13, 2014, an eruption took place in Kelud volcano, East Java, Indonesia. The eruption differed significantly from the typical characteristics of Kelud volcano. The activity did not produce the eruption lahars, in contrast with the usual
eruptions. Further, the eruption ejected coarse materials to a distance of 17-20 kilometers, rarely shown in the previous eruptions.
Based on the available records, the eruption lahars have characterized the eruption of Kelud volcano at least since the year 1000. In 2007, the eruption of Kelud volcano changed dramatically from highly explosive to very effusive forming lava dome. The dome extended E-W about 300 meters and around 200 meters in NS direction, with the volume of about 3 millions cubic meters. The extension to the root of the dome might increase the volume to about 5 to 6 millions cubic meters.
Based on satellite image interpretation, the April 13, 2014 Kelud eruption blew up about 70% of the lava dome. The destruction took place instantly resulting in the ejection of non-juvenile materials in a large distance. The coarse tephra falls of bomb size covering such a large distance might contribute to the preparation of the volcanic danger map in the future. The total volume of the ejected materials amount to about 150 to 200 millions cubic meters categorizing the eruption’s magnitude of 3 or moderate large in the VEI scale.