Today (18. December 2022) at 11:08 UTC an earthquake with magnitude of Mw3,8 took place in Katla volcano. This earthquake was felt, I don’t know if it was felt in Vík í Mýrdal. This is the largest earthquake in Katla volcano in a while.
![Two green stars in Katla volcano caldera. The south star is from the Mw3,1 earthquake on 16th December and the north star is from the earthquake of 18th of December.](https://icelandgeology.net/wp-content/uploads/2022/12/221218_1120.png)
There has been some earthquake activity with minor earthquakes following this strong earthquake. But it has been minimal at the writing of this article.
The most interesting part of this is the M1.9 that happened about 1½ hours earlier (09:24), at 8,2 km depth. It seems as if that deep quake was the trigger for the shallow M3.8. Which is an often repeating pattern in Katla.