Rincon de la Vieja (Costa Rica)
The Observatorio Vulcanológico y Sismológico de Costa Rica-Universidad Nacional (OVSICORI-UNA) reported that a total of 67 small phreatic eruptions at Rincón de la Vieja were recorded daily by the seismic and infrasound networks during 6-16 September. One of the eruptive events at 1032 on 6 Septembe
What changed
No earlier recorded observation is available to compare.
Costa Rica · GVP · Check the official source for the affected area and current instructions.
- Source timestamp
- 9/17/2026, 5:20:04 AM UTC
- Coordinates
- 10.831, -85.336
- Data source
- gvp
- Activity
- Continuing Eruptive Activity
- Country
- Costa Rica
- Report period
- 10 September-16 September 2026
- Source
- Smithsonian / USGS Weekly Volcanic Activity Report
🧰 What to do
Before
- •Know your community's evacuation plan and routes
- •Prepare goggles and N95 masks for ashfall
- •Keep vehicles fueled and a kit ready if near an active volcano
During
- •Evacuate if ordered; ash and gases can be deadly
- •If staying: close windows/doors/vents, wear a mask outdoors
- •Avoid river valleys and low areas (lahar/mudflow paths)
After
- •Avoid ashfall driving — ash damages engines and cuts visibility
- •Clear heavy ash from roofs carefully (wet ash is very heavy)
- •Wear a mask during cleanup; keep ash away from children
Guidance condensed from Ready.gov
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