Volcanic ash from Sangay volcano observed at 7 300 m (24 000 feet) a.s.l., Ecuador

Volcanic ash from Sangay volcano in Ecuador was observed at 7 300 m (24 000 feet) above sea level at 18:20 UTC on October 10, 2025. The advisory was issued by the Washington VAAC at 18:45 UTC.

According to the VAAC advisory, the observed ash cloud was detected between the surface and flight level 240, corresponding to an altitude of approximately 7 300 m (24 000 feet). The information was drawn from GOES-19 satellite data, VONA reports, and numerical weather prediction models. Due to weather clouds in the summit area, the ash was not directly detected on satellite imagery; the presence of ash emissions was indicated in the VONA report. No Aviation Color Code was stated in this advisory.

The Smithsonian / USGS Weekly Volcanic Activity Report does not include an entry for Sangay volcano for the most recent week, so no update on ongoing activity is available from the Global Volcanism Program at this time.

Sangay is an active stratovolcano located in the Andes of central Ecuador. The volcano poses hazards including ashfall, pyroclastic flows, and lahars. Ash emissions can impact communities downwind and interfere with aviation routes. While the area around the summit is sparsely populated, ashfall can occasionally affect nearby towns and agricultural areas further west.