31 Mar 2023 | 06:58 PM UTC
Colombia: Increased seismic activity reported at Nevado del Ruiz volcano on the border of Tolima and Caldas departments as of March 31
Officials raise alert level at Nevado del Ruiz volcano in Colombia, March 31, due to increased seismic activity.
Event
The Colombian Geological Service (Servicio Geologico Colombiano, SGC) has raised the alert level for the Nevado del Ruiz volcano to orange as of March 31 due to increased seismic activity in the area. The volcano is located on the border between the Tolima and Caldas departments. Authorities reported 6,500 seismic events on March 29 and 11,000 on March 30, including a magnitude-3.1 tremor.
According to the SGC, the orange alert level does not indicate an imminent eruption; however, an eruption is more likely. The agency is ordering local residents and authorities in the area to remain prepared in the event evacuation orders are issued. Authorities have also closed the nearby National Park Los Nevados as a precaution.
Air quality could become a concern, particularly in areas near the crater following an explosive event. Individuals in the region - especially those with underlying pulmonary conditions such as asthma, chronic obstructive pulmonary disease (COPD), or lung cancers - may experience difficulty breathing and could suffer from lower tolerance to physical exertion.
Transport
Plan for possible transport disruptions in the surrounding area, especially if a significant eruptive event occurs. Road conditions could quickly deteriorate during periods of significant ashfall, and visibility could be reduced. Officials might close roads near the volcano, depending on the presence of hazardous volcanic material. Fine particulate matter ejected from the volcano could pose a hazard to flights in the surrounding airspace, including at La Nubla Airport (MZL) in Manizales. Authorities may temporarily close airport facilities if significant ashfall accumulations occur.
Advice
Confirm flights if a large eruption occurs. Plan for possible transportation disruptions if operating near Lascar in the coming days. Seek updated information on road conditions before driving; due to reduced visibility, drive cautiously in areas affected by ash. Carry facemasks and observe other precautions to avoid ash inhalation if operating in the affected area.
