On April 24, 2025, Costa Ricas Poás Volcano experienced a significant escalation in volcanic activity, triggering heightened alarm among local authorities and scientists. The eruption, which began earlier in the week, has seen an increase in both the intensity and frequency of explosions, making this one of the most active periods for the volcano in recent years.
Increased Activity and Explosive Eruptions
The Volcanological and Seismological Observatory of Costa Rica OVSICORI reported that the eruptions at Poás have been particularly powerful, with ash columns rising up to 400 meters above the crater. These eruptions are characterized by both gas and material emissions that have been impacting nearby areas. Onlookers have described the explosions as loud and forceful, with rocks being thrown as far as the western rim of the crater. Additionally, the volcano has been emitting high concentrations of sulfur dioxide, with levels reaching up to 600 tons per daya significant increase from previous measurements.
Volcanologists have also noted that the eruptions show no signs of abating. The constant release of ash and gas from the volcano has raised concerns about the potential for a prolonged eruption, especially given the persistent seismic activity in the region. The continuous emissions and occasional explosions suggest that Poás is in a heightened state of unrest.
Health and Safety Concerns
As the ash fall continues to spread across surrounding regions, local authorities have issued warnings regarding air quality and public health. Communities near the volcano, including areas in Alajuela, Grecia, and Sarchí, are reporting a strong sulfur smell and are at risk of exposure to harmful particulate matter. Residents have been advised to stay indoors when possible and to wear masks to protect themselves from inhaling ash, which can irritate the respiratory system.
In response to the ongoing activity, the Costa Rican Ministry of Health has urged individuals to seek medical attention if they experience symptoms such as coughing, eye irritation, or breathing difficulties. Additionally, the National Emergency Commission CNE has extended a green alert to several nearby cantons, while Poás Volcano National Park remains closed to the public due to the elevated risk of further eruptions.
Monitoring and Preparedness Efforts
In light of the ongoing eruption, experts continue to monitor the situation closely. OVSICORI has raised the volcanos alert level to 3, indicating that the eruption is significant and requires ongoing vigilance. While the park remains offlimits to tourists, officials are working with specialists from the National System of Conservation Areas SINAC and OVSICORI to evaluate the situation and determine whether further safety measures are necessary.
The increased activity of Poás comes on the heels of similar eruptions from Costa Ricas other active volcano, Turrialba, which has also shown heightened activity recently. The two volcanoes, while not directly connected, are part of the same volatile geological region, and their eruptions are a reminder of the constant monitoring required to protect both residents and visitors in Costa Ricas volcanic zones.
A Reminder of Costa Ricas Volcanic Landscape
Costa Ricas landscape is shaped by its position along the Pacific Ring of Fire, where several volcanoes, including Poás, are active. These volcanoes are not only a significant geological feature but also a draw for tourists. However, the recent intensification of volcanic activity highlights the unpredictable nature of these natural wonders. While the eruptions offer a fascinating display of Earths raw power, they also pose a serious risk to nearby populations and infrastructure.
As Costa Rica continues to monitor Poás, officials and residents alike are reminded of the importance of preparedness. Volcanic eruptions, while not uncommon in the region, can have serious consequences, especially if they occur unexpectedly or escalate rapidly. The ongoing vigilance by both local authorities and scientists will be crucial in managing the risks posed by Poás as the eruption continues to unfold.
As the situation develops, residents in affected areas are urged to stay informed, follow evacuation orders if issued, and prioritize safety as their primary concern. With no clear end in sight, the Poás Volcanos eruption remains a significant environmental and public health issue, requiring coordinated efforts from all sectors of Costa Rican society to mitigate its impact.