From the Icelandic met office
On February 24th, 2021, two earthquakes above magnitude M5 were recorded. The larger one, M5.7, was at 10:05 and at 10:30 a M5.0 was measured. Later that day at 12:37 a M4.8 was recorded. Since the beginning of this unrest 16 earthquakes above M4 have been recorded and 90 earthquakes above M3. They have been felt widely in the SW part of the country and the larges once in the NW part as far as Ísafjörður. Note that all reviewed earthquakes have occurred on the Reykjanes Peninsula, roughly between Kleifarvatn and Svartsengi. Be aware that our web shows in accurate locations from the automatic syste
On Mars 01st five earthquakes above M4 have been measured in the northern part of Fagradalsfjall, M4,4 at 12:06, M4,0 at 12:24, M4,1 at 13:51 and M4,2 at 15:10. All those are in a similar location as the M5,7 earthquake. Our interpretation is that these are triggered earthquakes caused by the intense activity and deformation that has occurred in the area. The swarm is still ongoing and roughly 5000 earthquakes have been detected with the automatic system since the beginning of the swarm.
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