A magnitude 5,1 earthquake struck in Bárðarbunga at 16:19 (4:19 pm) GMT today. According to the Met Office, over 700 earthquakes have struck since midnight GMT. Seismicitiy is increasing, with over 2.500 earthquakes having been registered over the past 48 hours.
In comparison, at 22:17 (10:17 pm) GMT last night, "only" 2.173 earthquakes had struck.