20/07/2023
On 3 August 2022, after weeks of unrest on the Reykjanes Peninsula including over 10,000 recorded earthquakes from 30 July to 3 August with two quakes measuring over 5.0 Mw, another eruption began at Fagradalsfjall. A live stream from a camera at the site showed magma spewing from a narrow fissure vent. On 4 August the Icelandic Meteorological Office estimated it 360 meters in length. Over 1,830 people visited the volcano on the first day.[146] It erupted over a lava flow from the 2021 eruption. The Icelandic Meteorological Office initially advised people not to go near Fagradalsfjall due to the new eruption.
Iceland's Department of Civil Protection and Emergency Management stated that no lives or infrastructure were currently at risk from the eruption. Iceland's main airport, Keflavík Airport, was briefly on alert, which is a standard procedure during eruptions, though the facility did not cancel any flights. Airplanes were prohibited from flying over the site, although some helicopters were sent in to survey the eruption. The eruption was not producing large plumes, though it was likely to affect air quality and pollution in immediately surrounding areas. Professor of geophysics Magnús Tumi Guðmundsson said, judging from the initial lava flow, that the eruption was likely five to ten times bigger than the 2021 eruption, but that it was not "the big one". From the nearby geomorphology, the lava was likely to flow into the Meradalir valleys.
The lava flow decreased around 17 August and stopped on 21 August 2022. An estimated 12 million cubic meters of lava had erupted. The lava near the vent was 20-40 m thick, but flows were 5-15 m thick in the Meradalir valley, outside the crater area. Since then, there has been no visible activity at this site. Source: Wikipedia