Today, Indonesia’s Sinabung had its biggest blast in its nearly 5 years of eruptions. I reported on the initial reports of the blast and now we have some pretty stunning images from space on the eruption. It really captures the power of the blast and how the ash spread mainly to the north over Sumatra (rather than the west as predicted). Sinabung appears to have settled down since the explosion, but with this change of character, volcanologists will be looking for signs if this change will be permanent.The Terra MODIS image (below) taken not long after the eruption shows the ash column towering over the local cloud deck. The oval lake with the island in the middle to the bottom right of the image is the Toba caldera. Even in this picture, the ash plume has spread to cover over 100 kilometers of Sumatra.