Costa Ricas Poás Volcano is showing increasing volcanic activity, triggering safety measures and warnings across the region.
In the latest developments regarding Poás Volcano, Costa Ricas National Park has been closed indefinitely following a series of intense eruptions and rising seismic activity. The Volcanological and Seismological Observatory of Costa Rica OVSICORI reported that multiple eruptions from the volcano have sent ash columns soaring hundreds of meters into the sky, causing serious concerns for both public safety and air quality.
The eruptions, which began intensifying in late March and escalated into April, have been marked by the expulsion of ash, gas, and even incandescent rocks from the crater. On March 29, the volcano launched a particularly powerful eruption that sent ash clouds up to 1,000 meters above the crater. These eruptions are characterized by high gas emissions and the presence of sulfur dioxide, which poses a direct threat to both the environment and public health.
Park Closure and Public Safety Measures
In response to these dangerous conditions, the Ministry of Environment and Energy MINAE and the National System of Conservation Areas SINAC announced the indefinite closure of Poás Volcano National Park. This move comes after a brief reopening in March, which was shortlived due to the subsequent increase in activity. The closure applies not only to the park but also to surrounding highrisk areas, including the crater rim and Los Quemaderos. Unauthorized access to the park, particularly through back routes like those in Bajos del Toro, is prohibited, as the danger of further eruptions remains high.
Authorities have also issued a green alert in several nearby cantons, including Poás, Grecia, Sarchí, and Zarcero. These areas are experiencing the impacts of ashfall and volcanic gases, which have been reported as a major nuisance and health hazard, especially in more populated areas. Local residents have reported strong sulfur smells, which pose risks to respiratory health.
Health and Environmental Risks
The eruptions continuous emissions of sulfur dioxide SO₂ into the atmosphere have raised concerns about air quality in the surrounding regions. OVSICORI recorded over 600 tons of SO₂ emissions in a single day, which can cause severe respiratory irritation, particularly for vulnerable populations such as children, the elderly, and those with preexisting respiratory conditions. The Ministry of Health has advised residents and visitors in the affected areas to use N95 masks, limit outdoor activities, and seek medical attention if they experience symptoms such as coughing, eye irritation, or shortness of breath.
In addition to the health impacts, the ongoing eruptions have also caused concerns about potential infrastructure damage, particularly in communities directly affected by falling rocks and ash. Volcanic ash can accumulate quickly, leading to the risk of damage to buildings, vehicles, and machinery.
The Impact on Tourism
The closure of Poás Volcano National Park has significantly affected tourism in Costa Ricas Central Valley, a popular destination for travelers seeking to witness the beauty of one of the countrys most active volcanoes. While tourism is an important sector for the local economy, the safety of visitors has taken precedence. Tour operators have been forced to reschedule tours or issue refunds for those with bookings at the park.
Although the park remains closed, Costa Rica offers numerous other attractions, including cloud forests, beaches, and other volcanic sites, that are still accessible to tourists. However, the loss of Poás as a destination will likely have a ripple effect on local businesses that rely on the influx of visitors.
What Lies Ahead?
As of now, experts from OVSICORI are continuing to monitor the volcanos activity closely, with no definitive timeline for when the park will reopen. The unpredictable nature of phreatic eruptions makes it challenging to forecast exactly when the danger will subside. In the meantime, authorities are urging travelers and residents alike to stay informed through official channels and adhere to all safety advisories.
In conclusion, while Poás Volcano remains an aweinspiring natural wonder, its recent eruption serves as a reminder of the immense power of nature. Visitors planning to explore Costa Ricas volcanic regions are urged to prioritize safety and respect the current restrictions in place.