The level of activity of Nevado del Ruiz reaches orange: "In days or weeks it could erupt more than in the last decade"
The level of activity of the Nevado del Ruiz volcano changes from yellow to orange for the first time in ten years, as reported this Friday morning by the Colombian Geological Service and the National Unit for Disaster Risk Management. "This level indicates that in days or weeks the Nevado del Ruiz volcano could erupt more than it has in the last decade," read a press release issued jointly by the two entities. The last time the volcano's activity level reached orange was in April 2012.
This change in the level of activity is given based on the evaluation of the seismic events registered during the last days in the southwestern zone of the volcano, at a distance from 2 to 5 km from the Arenas crater, and at depths between 2 and 4 km from to the top. According to these monitoring, which are carried out in order to identify when a volcano can erupt, it is known that last Wednesday, March 29, the highest number of daily earthquakes was recorded since the monitoring of this volcano began in 1985. , after the Armero tragedy in which more than 25,000 people died from an avalanche generated by an eruption of the volcano.
The Geological Service revealed that on March 28 there were 6,500 earthquakes and on the 29th there were more than 11,000 earthquakes. Up to the time the bulletin was issued, on Thursday the 30th, more than 9,600 seismic events had been recorded. "A gradual increase in the seismic energy released is also highlighted," reported the Geological Survey. The maximum magnitudes registered have been: 2.6 on the 24th; 2.7 on the 29th and 3.1 on the 30th. The latest warning sign is an increase in "thermal anomalies" since October 2022, which persists to date.
La Unidad Nacional para la Gestión del Riesgo de Desastres activa los comités de gestión de riesgo de cinco departamentos: Tolima, Caldas, Risaralda, Quindío y Cundinamarca
elpais.com
The @sgcol changes to Orange Alert due to increased activity in the #NevadodelRuiz #Volcano, in #Colombia
(possible eruption in days or weeks)
Significant increase in seismic activity associated with rock fracturing.