Third-biggest quake so far: secure loose items
Several smaller quakes of between M3 and M4 have been felt since.
The activity this morning follows a 4.9 shake before 23.00 last night. The biggest quake so far has been the M5.7 at the start of the swarm just after 10.00 on Wednesday morning. The chance of similar, or bigger, quakes in the region remains high.
State police civil protection chief Víðir Reynisson has repeated the advice that people should go around their homes and workplaces securing or removing fixtures and fittings that could break or cause injury in further quakes. A shelf of ornaments and pictures above a bed is one obvious example. Víðir also points out that the civil protection agency website has a page of earthquake advice that can be seen here.
Reykjanes in the spotlight
The University of Iceland volcanology and natural disasters group forecast has meanwhile been updated and predicts that any imminent volcanic eruption would probably erupt in the middle of the Reykjanes peninsula, in the area currently most affected by the earthquakes.
The scientists are at pains to point out that their forecast does not indicate that an eruption is starting anywhere (in fact, there are no signs of dangerous gases or lava flow below the surface at this time), but rather, it predicts where the most likely eruption site and lava flow area is at any given time. The forecast is based on a mix of data from the past 10,000 years and present-day indicators. The latest forecast is therefore strongly influenced by the ongoing earthquake swarm.