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Source: La Nacion.

on 13 January.

The volcano’s last major eruption took place in 1953, the event which formed Poas’ famous crater. Poas volcano (Costa Rica): Increased SO 2 emissions but volcano remains calm Thursday, Feb 13, 2020 OVSICORI-UNA report that there is currently a stable fluctuation pattern of seismic activity at the volcano. The Poás Volcano is one of Costa Rica’s most visited volcanic attractions, hosting around 250,000 visitors a year.

Carbon dioxide/Sulfur dioxide (CO 2 / SO 2) ratios remains stable with the exception of a peak on February 9. The article also stated that a report from OVSICORI-UNA on 22 January revealed that an eruption of gas propelled material that did not fall beyond the cone. According to a news article, an eruption of volcanic material and gases from Poás rose to an altitude of 2.9 km (9,500 ft) a.s.l. The new eruptions formed an ash and vapor plume of some 3 kilometers (some 9,800 feet) above the crater, visible from varios locations in the provinces of Alajuela, Heredia and San José. Authorities evacuated 20 people in the vicinity of the eruption.

Vulcanologists from OVSICORI and the National Seismological Network reported two strong eruptions at Poás Volcano at 7:39 a.m. and 7:57 a.m. on Friday.

There is continued inflation but not a significant amount. Since then, the main crater has remained active to varying degrees; the park closed briefly in 1989 after a minor eruption, and it closed multiple times in 1995 due to lesser activity. OVSICORI-UNA report that there is currently a stable fluctuation pattern of seismic activity at the volcano.