A very sharp magnitude 4.6 earthquake that was clearly felt in Akureyri, Húsavík and other communities in the north of the country yesterday afternoon was followed up with a magnitude 4 quake in the early evening.
The seismic activity was centred some 20 kilometres northwest of Húsavík and local residents say it was a very sharp quake, but that it was over very quickly. The later, smaller earthquake’s epicentre was 6.9 kilometres southeast of Flatey island.
Met Office natural disasters specialist Einar Hjörleifsson told RÚV that people reported feeling the quakes across a large area of North Iceland and that they were caused by tension being released along the Tjörnesbrotabelt fracture zone.
There has been an ongoing earthquake swarm along the Tjörnesbrotabelt fracture zone for several months and Einar says the seismic activity seems to be moving along the line in the direction of Húsavík.