A volcano in the southeast of Iceland has erupted for the third time in three months on Thursday (Feb. 8), opening up a new 2-mile-long (3 kilometers) fissure and spewing out large plumes of lava and ash. At present, the eruption poses no risk to local people, but has caused damage to nearby infrastructure.

The volcano, which is located to the north of the evacuated fishing town of Grindavík in the Reykjanes Peninsula, first erupted on Dec. 18, 2023 after weeks of seismic activity and ground deformation, and again in January this year

Earlier this week experts warned that the volcano could imminently erupt again after large quantities of molten rock began to pool in the volcano’s magma chamber. At around 6:00 a.m. local time, the volcano burst through a fissure following a brief period of increased seismic activity, according to the Icelandic Met Office (IMO)

The eruption started strong, with giant lava fountains reaching between 164 and 262 feet tall (50 and 80 meters). The eruption plume, which is made up of ash, smoke and toxic gases, reached up to 2 miles above the surface and the lava’s glow could be seen from outside the Reykjanes peninsula before the sun rose, IMO reported.

Related: Iceland eruption is part of centuries-long volcanic pulse 

The new eruption began at the Sundhnúksgígar crater near Mount Sundhnúkur to the north of Grindavík. A team of scientists was flown to the site in a helicopter shortly after the eruption began to assess how the event might develop, the Icelandic Coast Guard reported

The rate of lava flow is believed to be slightly less than the first eruption, which at its peak was spewing out enough molten rock to fill an Olympic swimming pool every 20 seconds.

Lava flows from the fiery fissure are expected to flow north, east and west, away from Grindavík, according to Icelandic news site RÚV. The famous Blue Lagoon spa resort and geothermal Svartsengi power plant are also safe at the moment. However, flowing lava has already crossed the road at the exit to the Blue Lagoon, RÚV reported. 

Researchers monitored the eruption from a helicopter. (Image credit: Icelandic Coast Guard)

There is a chance that another fissure could open up to the south of the new eruption, which could unleash lava flows toward Grindavík, Kristín Jónsdóttir, head of IMO’s volcano department, told RÚV. “But we’re not seeing that right now.”

However, wind-blown pyroclastic slag from the eruption has been found in the town, according to RÚV, who are also reporting that authorities are having difficulties in protecting the region’s water supply. 

“The situation is simply that we are not managing to protect this as much as we had hoped, and that could lead to lava flowing in such a way that all of Suðurnes [region in southwest Iceland] would be without hot water,” Víðir Reynisson of the Icelandic Police told the national broadcaster.

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