Mr. Martin Hensch, earthquake expert at the Icelandic Met Office said: "Hekla volcano erupted last time without any warning". For the past two weeks seismic activity has been taking place in the volcano, at around 11km depth. There have been around seven earthquakes, all below one on Richter, says Martin. He added "This is quite unusual activity in the volcano".
No magma movements have been noticed yet according to Martin, but there might be some pressure building up. "We are not very worried that an eruption is going to take place, but predicting an eruption in Hekla volcano is nearly impossible. The last time the volcano erupted we only knew it one hour in advance." he said.