• Red Alert issued following eruption at Poás volcano, Costa Rica

    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.

  • Shallow M6.0 earthquake hits Costa RIca

    A strong and shallow earthquake registered by the USGS as M6.0 hit Costa Rica at 21:51 UTC (15:51 LT) on August 24, 2020. The agency is reporting a depth of 27.2 km (16.9 miles). OVSICORI-UNA reports M6.0 at a depth of 23 km (14.3 miles). EMSC registered it as M5.3…

  • Hydrothermal eruption at Poas volcano, Costa Rica

    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…