The volcano Merapi, in Indonesia, has been erupting all week. But today (Saturday in Indonesia) an especially strong eruption has begun. Erik Klemetti's Eruptions blog, which proved its worth during the Eyjafjallajokull eruption in April, has a post up today in which commenters are posting updates in real time. At this moment the latest comment is as follows: "Giant blast just woke me up, lightning visible plume and my guide saying this bigger than event on 26th. Pandamonium here in Selo village. 1am local time here. moonlight and lightning illuminating huge plume. More updates to come."