Overview of Earthquake activity

Earthquake activity throughout the country is described in a weekly summary that is written by a Natural Hazard Specialist. The weekly summary is published on the web every Tuesday. It covers the activity of the previous week in all seismic areas and volcanic systems in the country. If earthquake swarms are ongoing or significant events such as larger earthquakes have occurred during the week, they are specifically discussed. 

Weekly overview

Weekly overview, 22. - 28. May, Week 21

Approximately 630 earthquakes were located on the IMO seismic network last week. This is around double the amount of earthquakes detected last week and the week before, but similar to the number of events for the last four weeks before that. The largest event of the week was a magnitude 3.8 in the evening of May 23rd 10 km east of Grímsey. It was felt widely around the Eyjafjörður area, including in Akureyri and in Ólafsfjörður. This earthquake was a part of an earthquake swarm that was active this week. This swarm started late last week and was mostly confined to two clusters just east of Grímsey. Another event last week was a M3.1 just over a kilometer southeast of Kleifarvatn on May 27nd was reported felt in Hafnarfjörður. It was a part of a dense cluster of earthquakes and another clustered activity was also measured in Skipastígshraun, just west of Mt. Þorbjörn.

Read more

Weekly overview week 20, May 15th - 21st, 2023

Approximately 310 earthquakes were located on the IMO seismic network last week. This is less events than last week when 350 earthquakes were detected. The largest event of the week was a magnitude 2.7 on May 21st in Bárðarbunga. Five earthquakes were detected in Hekla., the largest M1.5. 

Read more

Weekly overview, 8-14th of May, Week 19

Approximately 350 earthquakes were located on the IMO seismic network last week. This is fewer events than the last two weeks. The largest event of the week was a magnitude 2.8 which took place on May 9th close to Kolbeinsey Island. Only three other events above magnitude 2 were recorded during the week, in Askja and on the Tjörnes fracture zone. Seismicity at Grímsvötn has decreased with only 12 recorded events last week, compared to 30 the week before. Two small events were detected in Mt. Hekla.

Read more

Weekly Overview, 1 - 7. May, 2023

Around 528 earthquakes were measured by IMO‘s SIL seismic network this week, which is less than the previous week when they were counted around 590 in total. The largest earthquake this week of M4.6 was measured in a strong swarm in Mt. Katla on the 4. May. Three earthquakes over M4 were measured in the swarm, this is the strongest swarm in Mt. Katla since 2016.  The MET office received reports that the earthquakes were felt in Vík in Mýrdalur and Þórsmörk. An earthquake swarm was also measured on 4. May by Reykjanestá and the largest earthquake was measured at M3.4. This was also reported to have been felt. Around 30 earthquakes were measured in the Grímsvötn area, marking the continuation of increased seismic activity there like in the week before. The largest earthquake measured M2.6. One small earthquake was measured in Mt. Hekla.

Read more

Other related web sites

This website is built with Eplica CMS