The Costa Rican Volcanological and Seismological Observatory (Ovsicori) reported loud rumbling and the smell of sulfur in the vicinity of Turrialba Volcano.

According to the agency affiliated with the National University (UNA), the activity is associated with “an eruptive event of limited scope in the active crater.”

The eruptive activity occurred around noon on Sunday, March 22, according to volcanologist María Martínez.

According to the technical report, seismic instruments and infrasound sensors first detected a volcano-tectonic signal and, one minute later, another linked to a collapse in the crater area.

Report on Turrialba

Meanwhile, National Park officials notified the institution of the situation at 12:04 p.m.

Specifically, they detected a loud rumbling sound accompanied by the smell of sulfur at the summit.

Authorities indicated there were no reports of ash fall in nearby communities.

Gas emissions were only detected in areas near the active crater, while the prevailing wind blew northward.

The report states that the height of the plume was unknown at the time of the report, with data obtained via seismographs, infrasound acoustic sensors, and direct field observation.

The activity level remains at the warning category, so specialists recommend constant monitoring for possible changes in the volcano’s behavior.