There were two earthquakes on the northern side of the Bárðarbunga caldera just before 10 am yesterday morning, RÚV reports. The first one was of a magnitude 3.3, but the latter measured 3.6. They occurred within half a minute of each other. Those were preceded by a tremor of a magnitude 3.1, half an hour past midnight yesterday.
According to Gunnar Guðmundsson, geophysicist at the Icelandic Met Office, those are in line with the activity of the past two or three months, when tremors exceeding a magnitude of 3 have occurred every two or three weeks.