Tremor of 3.7 in the Light Mountain System

An earthquake of 3.7 was measured at Grjótárvatn in Mýrum at about eight o’clock this morning. The source of the earthquake is in the Light Mountain system, a volcanic system that extends from Kolgrafafjörður in the west to Norðurá in Borgarfjörður and draws its name from the mountain range in Snæfellsnes.

An announcement from the Icelandic Meteorological Office’s Natural Watch is that the largest earthquake ever recorded in this area since activity began in 2021.

« Earthquakes in this area are quite deep, usually at a depth of 15-20 km. No other earthquake activity has followed following this earthquake. The Icelandic Meteorological Office has received reports that the quake has been found in the area, including inside Skorradalur and Borgarfjörður. »

Two over four at Bárðarbunga

It also says that earthquakes were measured just before. 2 at night at Bárðarbunga. Two earthquakes were measured 4.1 and 4.3 in size.

« A few smaller aftershocks have been detected. No reports were received by the Icelandic Meteorological Office that the earthquakes were found in the area. Equakes of this size are well known in Bárðarbunga, but the last earthquakes of similar size occurred last March. »

Tremor activity in the Light Mountain system has increased since 2021 and last year, the Icelandic Meteorological Office’s experts decided to increase monitoring in the area. Last fall, a measure was placed in Hittardalur, close to the sources of the earthquakes.

The activity is mostly in the area around three lakes, Grjótárvatn, Háleleikvatn and Langavatn.