Continuous volcanic ash emissions at Sangay volcano reach 6 400 m (21 000 feet) a.s.l., Ecuador

Volcanic ash from Sangay volcano in Ecuador was observed at 6 400 m (21 000 feet) above sea level at 03:40 UTC on April 8, 2026. The advisory was issued by the Washington VAAC at 04:06 UTC on the same date.

The ash cloud was detected between the surface and flight level 210 (6 400 m or 21 000 feet), moving southwest at approximately 19 km/h (12 mph) according to satellite data (GOES-19), webcam observations, and atmospheric models. The ash is forecast to continue moving southwest to west-southwest, dispersing by T+18 hours. No Aviation Color Code was stated in this advisory.

According to the Smithsonian / USGS Weekly Volcanic Activity Report, Sangay volcano continued erupting during 18-25 March 2026. Daily ash-and-gas plumes rose between 300 m and 1 800 m above the crater rim, drifting in multiple directions. Nighttime observations frequently showed incandescent material on the flanks, and the national risk management agency maintained the Alert Level at Yellow.

Sangay is a large stratovolcano located in central Ecuador. It is known for persistent explosive eruptions, producing ash plumes, lava flows, and occasional pyroclastic flows. Hazards include ashfall affecting nearby communities, disruption of air traffic, and potential lahars. The closest populated areas at risk include the towns of Macas and Riobamba, both situated within 100 km (62 miles) of the volcano.