There seems to be a minor eruption starting in Hamarinn volcano (might be part of Bárðarbunga volcano). Given the current tremor signature on Skrokkalda SIL station. For the moment I do not know if this is going to remain a small eruption or might evolve to larger eruption. That is going to come clear in next several hours. But for the moment this is starting and glacier flood is to be expected in several hours. There is no danger to humans or humans structures I think.
Update 1: Darn! False alarm!
This is how the tremor plot did look after one update.
Blog post updated at 09:59 UTC on 27. September 2011.