Volcanic ash from Sangay volcano observed at 6 400 m (21 000 feet) a.s.l., Ecuador

Volcanic ash from Sangay in Ecuador was observed at 6 400 m (21 000 feet) above sea level at 07:10 UTC on December 26, 2025. The advisory was issued by the Washington VAAC at 07:49 UTC.

According to the advisory, the ash cloud was observed at surface to flight level 210 (6 400 m or 21 000 feet) and confirmed in GOES-19 satellite imagery, as well as a VONA report. The ash cloud was initially moving south-southeast from the summit and located approximately 28 km (17 miles) south-southeast from the summit. Light and variable winds were expected with movement to the east-northeast up to +12 hours. No Aviation Color Code was stated in this advisory.

The most recent Smithsonian / USGS Weekly Volcanic Activity Report for Sangay does not provide a new summary for this week. Please check the Global Volcanism Program for the latest updates on Sangay’s activity.

Sangay is a stratovolcano located in central Ecuador. Its hazards include frequent ashfall, pyroclastic flows, and lahars. The volcano is situated in a sparsely populated area, but ashfall can occasionally impact downstream communities and nearby populated regions when wind conditions shift.