3.9 M earthquake north of Grindavík

The source of the earthquake was northwest of Grindavík.

The source of the earthquake was northwest of Grindavík. mbl.is/Kristinn Magnússon

An earthquake at the size of 3.9 M hit last night around 1 AM last night north of Grindavík on the Reykjanes peninsula.
The Icelandic Met Office got news about people feeling the earthquake on the Reykanes peninsula.

Around 2 AM last night approximately 100 earthquakes had followed. The biggest of those were 2.9 M at 1:09 AM, 2.8 M at 1:17 AM and 2.6 M at 1:26 AM.

This is the biggest series of earthquakes since the 15th of May when there were earthquakes around Eldvörp on the Reykjanes peninsula, according to a press release from the Icelandic Met Office. 

400 earthquakes detected in the area since midnight

Around 400 earthquakes have been detected in the Reykjanes peninsula since midnight, which is more acitivity than the previous 24 hours. The seismic activity has been irregular for the last few weeks but the uplift in the peninsula has been receding in the last two weeks. 

According to Bjarki Kaldalóns Friis, a specialist at the Icelandic Met Office, there are no signs of lava breaking through the earth's crust and minimal turbulence have been detected. They are still waiting to see the daily GPS measurements that will show the exact status on the uplift and show if land has risen or receded in the area. 

He says that many felt the earthquake last night but it is the biggest one in the last month. Since the uplift started receding the earthquakes have mostly been in the range of 1-2 M. However, they still talk about a series of earthquakes even though the activity is less than we saw last month.

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