A Red Alert was issued for Poás Volcano National Park in Costa Rica on Wednesday, April 23, 2025, after a series of eruptions produced ash plumes reaching up to 4 500 m (15 000 feet) above the crater. Ashfall was reported in several surrounding areas, prompting Orange Alerts in Grecia and Sarchí, and Yellow Alerts in Alajuela, Poás, Naranjo, Río Cuarto, and Zarcero due to increased volcanic hazards.
A sudden explosive eruption took place at the northern part of Costa Rica’s Poas volcano at 08:42 UTC on April 6, 2022.
A strong hydrothermal explosion took place at Costa Rica's Rincon de la Vieja volcano at 16:16 UTC (10:16 LT) on April 19, 2020. According to OVSICORI-UNA, a steam and ash plume rose approximately 1 500 m (4 900 feet) above the crater. This is 3 416 m (11 200…
A hydrothermal eruption, lasting 25 minutes, started at Costa Rica's Poas volcano early September 23, 2019 (UTC). According to the Volcanological and Seismological Observatory of Costa Rica (OVSICORI), the eruption started at 20:59 local time on September 22…
A notable eruption started at Costa Rica's Poas volcano on February 11, 2019, with persistent low-level ash emission and crater incandescence. The eruptive column reached 200 m (650 feet) above the crater or 2 908 m (9 540 feet) above sea level. The eruption…
More than 40 earthquakes have been registered under dormant Tenorio volcano in Guanacaste, Costa Rica after a major earthquake in the Caribbean Sea on January 10, 2018. The event forced authorities to temporarily close the Tenorio Volcano National Park. This is the…
Increased volcanic activity at Costa Rica's Poas volcano on Sunday, April 9, 2017, forced authorities to evacuate a large group of tourists. The last eruptive activity of this volcano was reported in July 2016. According to the park rangers, the evacuation took…
The eruptive activity at Costa Rica's Turrialba volcano has resumed over the weekend with constant vapor, gas and ash explosions. UCR's National Seismological Network (RSN) volcanologist Mauricio M. Mora said that ash and vapor spewings of almost 500 m (1…
