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

Volcanic ash from Popocatépetl in Mexico was observed at 6 400 m (21 000 feet) above sea level at 19:16 UTC on October 28, 2025. The advisory was issued by the Washington VAAC at 19:27 UTC on the same day.

The ash cloud was reported between the surface and flight level 210 (approximately 6 400 m or 21 000 feet). The emissions were moving to the southeast from the summit, with previous ash reaching approximately 93 km (58 miles) southeast before dissipating. Satellite data (GOES-19), webcam observations, and numerical weather prediction models were used as information sources. No Aviation Color Code was stated in this advisory.

There is no entry for Popocatépetl volcano in the latest Smithsonian / USGS Weekly Volcanic Activity Report covering the period referenced in the VAAC advisory.

Popocatépetl is a large stratovolcano located about 70 km (43 miles) southeast of Mexico City. It is one of Mexico’s most active volcanoes, with hazards including ashfall, pyroclastic flows, volcanic bombs, and lahars. Populations at risk include cities such as Puebla, Mexico City, and surrounding settlements due to both ashfall and potential aviation impacts.