A small earthquake swarm took place this morning (11-September-2019) just north of Grindavík village this morning. A magnitude Mw3,4 earthquake took place at 06:06 UTC and was felt in Grindvík village.
Earthquake activity north of Grindvík (green star on the left). Copyright of this image belongs to Icelandic Met Office.
This earthquake activity is normal tectonic earthquake activity.