Fagradalsfjall volcano (Reykjanes peninsula, Iceland): activity is back after 7 days of calm and illuminates sky over Grindavik

Fountaining continues at the lava field in Geldingadalir valley (image: @EIlyinskaya/twitter)

After the longest break of 7 days of apparent calm in the effusive activity, it picked up again on 11 September as a new lava flow returned to the western flank of the main crater and continues to descend into the Geldingadalir valley.

Small lava fountains are being observed in the field of lava in the Geldingadalir valley and continue to erupt.

The activity quickly intensified accompanied by a strongly rising signal of volcanic tremor indicating rapid magma flux towards the surface.

Timelapse video of the returned effusive eruption on 11 September showing illuminated sky over Grindavik (source: @ar_etsch/twitter)

new eruption night view from Grindavik… 2021.09.11./12. amazing!#timelapse from footage: Veðurstofa Ísland#massiv #eruption #icelandvolcano #lava #volcano #iceland #icelanderuption #Geldingadalir #Fagradalsfjall #Meradalir pic.twitter.com/rgDj26Ib4U

— Ar-etsch (@ar_etsch) September 12, 2021

Glowing steam at the current eruption site from live webcam accompanies the activity at the time of this update (image: Youtube/RÚV)