The expected volcanic eruption began this morning on Iceland’s Reykjanes Peninsula. A 900 m long eruption fissure opened 2 km north of Grindavik. Lava fountains along the fissure fed a lava flow that flowed in a southwesterly direction. In the afternoon a 1 m long fissure appeared on the outskirts of Grindavik. It is about 200 m from the nearest building. In the late afternoon a lava flow reached the first two houses. They burned down. At night the lava output decreased again. The eruption was preceded by a swarm earthquake lasting several hours. Significant ground uplift has been noted since the last eruption in December.