A trio of Costa Rican volcanoes showed ongoing unrest. Poas, Rincon de la Vieja, and Turrialba all held at Level 2 – Warning with Aviation YELLOW advisories.
Other
Costa Rica’s Poas, Rincon de la Vieja, and Turrialba remained in a state of unrest through 27–28 April local time. All three share Level 2 – Warning status and Aviation YELLOW.
Source: Smithsonian/USGS Daily Volcanic Activity Report (28 April 2026).
Activity Summary for 28 April 2026
| Volcano | Country | Activity Type | Keynotes |
|---|---|---|---|
| Poas | Costa Rica | Unrest | Ongoing unrest; Alert Level 2 – Warning; Aviation YELLOW. |
| Rincon de la Vieja | Costa Rica | Unrest | Ongoing unrest; Alert Level 2 – Warning; Aviation YELLOW. |
| Turrialba | Costa Rica | Unrest | Ongoing unrest; Alert Level 2 – Warning; Aviation YELLOW. |