Ice Crystal Halos

Pyramidal halos over Frankfurt am Main

Pyramidal halos over Frankfurt am Main

Andreas Zeiske observed a pyramidal halo on 6 June 2011 in Frankfurt am Main. In the images, the 22° halo, 18° halo and the left 18° lateral arc can be seen about the St.-Katharinen-Church. The phenomenon formed on a thin field of Cirrus clouds and lasted for 10 minutes at around 08.00 CET. About 5 hours later a cold front with rain showers and thunderstorms swept across the city of Frankfurt. ( 12 )

Andreas Zeiske, Germany

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