The Gran Canarian palms
The Special Plan for Civil Protection and Attention to Emergencies due to Volcanic Risk (Pevolca) of the Canary Islands has raised alert level from green to yellow, which supposes a preventive action before a moderate risk of volcanic activity.
The yellow level is the second of the four existing ones, in which the begins to inform the population so that you are alert to a change in situation, in addition to intensify surveillance and the monitoring of volcanic and seismic activity. At the orange level, the third, a maximum alert is already decreed for pre-eruptive phenomena to, in the red, notify an emergency that there is an eruption in process.
The Department of Security, after the meeting of the Scientific Committee of Pevolca, has issued a statement in which, although it warns of the need to be alert to possible changes, these they would not have to pose a risk for the population.
La Palma has experienced a significant increase in seismic movements since Saturday, which has been on the rise since 2017, with more activity since 2020. In recent days, in addition to increasing the volume of movements, their intensity has increased above 3 on the Richter scale and the depth at which its epicenters occur has been reduced, from 30 to 12 kilometers.
– 1-1-2 Canarias (@ 112canarias) September 13, 2021
So far, the National Geographic Institute (IGN) has notified around 1,600 low intensity earthquakes, although some of them have already been noticed by the population. The places where these micro tremors have been felt have been, mainly, Fuencaliente, Los Llanos de Aridane, El Paso and Mazo.
The most intense
The Director of Emergencies, Jorge Parra, has indicated that since the summer of 2020 seismic activity has increased with, so far, eight series of earthquakes in this area of the south of La Palma.
Volcanic activity #LaPalma Seismic energy persists and the magnitude of earthquakes has increased. The biggest so far of 2.8. The depths range between 2 and 17 km. It is possible that there will be some felt event in the next few hours. @IGN_Sismology@IGNSpainpic.twitter.com/rPied2aarM
– Canary volcanoes (@VolcansCanarias) September 12, 2021
Registered activity since Saturday, September 11, it is the most intense, with regard to the number of earthquakes located with more than 400 and their magnitude.
The Volcanological Institute of the Canary Islands, Involcán, values this movement «a significant change«In the Cumbre Vieja volcano, linked to the known phenomenon of magmatic intrusion, a process that occurs inside the earth’s crust.
The highest values in 30 years
Helium-3 emission data, which determines magmatic activity has «the highest observed value of the last 30 years“, As assessed by the Pevolca committee according to the geochemical monitoring of volcanic gases.
Monitoring and follow-up of the phenomenon is intensified and it is expected that in the coming days the tremors on the island may intensify.
Informative update: the seismic swarm continues in the Cumbre Vieja volcano (La Palma, Canary Islands) with more than 400 localized low-magnitude earthquakes ➡️ https://t.co/CZaGJ36eoD
— INVOLCAN (@involcan) September 13, 2021
Zapata asks for tranquility
The president of the Cabildo de La Palma, Mariano Hernández Zapata, has asked tranquility for the population before the alert for volcanic risk. As you have recalled, that the yellow traffic light has been activated by the increase in seismic movements, nor poses a higher risk for the population but a preventive plan due to the high frequency of these earthquakes in recent days.
The president of La Palma has asked calm and attention to monitor the data and records in the next 48 hours, although for the moment “the situation is calm.”