Reykjanes volcano update: magma volume rises

The ongoing increase of magma volume at the Svartsengi region is consistent with models predictions. The total amount of magma, added to the magma chamber since the eruption began on March 16, is now approaching 10 million cubic meters. Historically, magma influxes from the Svartsengi have occurred when the chamber has accumulated between 8 and 13 million cubic meters of magma since the last eruption.
Additionally, there's a possibility of a magma surge leading to new fissures opening outside the usual area between Stóra-Skógfell and Hagafell. However, this scenario is deemed less probable than others and would likely be accompanied by significant seismic activity and deformation, providing more advanced warning compared to previous eruptions.

On Wednesday, April 24, experts from the Norwegian Meteorological Agency carried out measurements of gas emissions from the eruption. It is estimated at 6-9 kg/s of SO 2, but in the last measurement made two weeks ago, on April 12, the gas emission was estimated at 10-18 kg/s. There is no evidence that it is drawing gas emissions from the eruption. While the eruption continues, the flow of SO 2 can vary greatly from day to day (as the eruptions at Fagradalsfjall showed). There is still a risk of gas pollution in the area around the crater as well as in settlements on the Reykjanes Peninsula, and we advise people in the area to monitor the air quality and learn about the reaction to air pollution from the volcanic eruption.

The main crater continues to generate the constant spattering of incandescent, juvenile, and molten pyroclasts, feeding the open lava flow towards the south. The lava travels through the main lava tube system and becomes obscured from view as it progresses further south.
As the attached visualisation indicates, the lava has thickened along protective barriers to the east of Grindavík over the past few days.