Overview
- Residents across Puebla, including Angelópolis, Cholula and La Paz, photographed a large circular gap in a mid-level cloud layer on the morning of November 12.
- The Government of Puebla and Protección Civil posted on X to identify the formation as a cavum cloud and to dispel UFO claims.
- NASA and Mexico’s Servicio Meteorológico Nacional explain that cavum clouds form when supercooled droplets rapidly freeze, often triggered by an aircraft, creating ice crystals that fall and leave a clear opening.
- Reports from Aeropuerto Internacional Hermanos Serdán noted mid-level clouds, mild temperatures and sufficient humidity that supported conditions for supercooled droplets.
- Meteorological references from WMO and UCAR classify the phenomenon as uncommon yet natural and nonhazardous, and images continue to circulate widely on social media.