The National Geographic Institute (IGN) reported a 2.2 magnitude earthquake this afternoon (Tuesday) in the vicinity of the Tajogaite volcano on La Palma, the strongest tremor in the area since the eruption in 2021. The earthquake reached a maximum intensity of IV (moderate) and was felt by residents in several locations across the island.
According to the IGN report, it occurred at 1:29pm and was primarily felt in Las Manchas and San José (Breña Baja), with lesser intensity reports from Jedey, La Laguna, San Nicolás, Todoque, and Paso de Abajo.
The epicenter was initially identified in the now-buried neighbourhood of Todoque, which currently lies under a thick layer of lava from the 2021 eruption.
Earlier this morning, three additional minor tremors were recorded in El Paso, with magnitudes ranging from 0.8 to 1.3 at depths between 4 and 9 kilometres. These smaller quakes occurred in the early hours and weren’t felt by the population of the island.
The Mercalli intensity scale, which measures the effects of earthquakes, ranges from I (very weak) to XII (extreme). The intensity IV earthquake experienced this afternoon is classified as moderate, meaning it is capable of causing noticeable disturbances such as rattling of crockery, doors and windows, and even slight movement of parked vehicles.
Itahiza Domínguez, the director of the IGN in the Canary Islands and a seismology expert, clarified that these earthquakes are unlikely to indicate new volcanic activity. Instead, they are probably related to the ongoing settlement of lava flows deposited during the 2021 eruption.
"Two and a half years ago, the eruption deposited significant amounts of material, which is still settling," Domínguez explained. "Our measurements show that the lava flows are still subsiding, albeit by just a few millimetres, which can still produce felt earthquakes."
Domínguez further explained that despite the moderate magnitude of 2.2, the earthquake's superficial nature contributed to its noticeable intensity. He also said that future felt earthquakes could not be ruled out, as the post-eruptive process on La Palma is ongoing.
Residents are advised to stay informed about seismic activity and follow guidelines from local authorities to ensure safety and preparedness.
