The eruption of Agung in Indonesia, seen on November 27, 2017. The ash plume may be as tall as 9 kilometers, although the ash plume height has been very difficult to confirm. The glow from the new lava in the crater can been seen clearly. PVMBG/MAGMA Indonesia. UPDATE NOVEMBER 27, 2017: It seems that Indonesia's Agung is in full eruption now after the start of events last week. The emergence of lava at the summit over the weekend has lead to a more-or-less constant ash plume that is sometimes split into a dark ash-rich plume and a lighter steam-rich plume (see below). This isn't uncommon during volcanic eruptions and might hint at multiple vents in the main crater. There is definitely ash falling on the area around the volcano (see below), leading to more evacuations and the closure of Ngurah Rai Airport in Denpasar and other airports, stranding passengers. The current Darwin VAAC warning has ash reaching FL300 (~30,000 feet/9 kilometers) with the ash drifting to the east, covering most of the island on Lombok. This likely isn't the plume height, but ash is drifting to that level -- the plume height has been very difficult to determine so far. The PVMBG has put Agung on Red Alert status (its highest) and created an exclusion zone around the volcano that reaches 8-10 kilometers.
Interesting ash plume coming out of #Agung with two columns of different colors. One has a higher ash content (darker), the other has a higher steam content (lighter). pic.twitter.com/g4SBCi4POl
