Ice Crystal Halos

Displays

Display from Achsheim

Display from Achsheim

On the morning of 25th January 2012, I observed a large halo display near Achsheim, a little village north of Augsburg/Bavaria/Germany (450m elevation). Beside this village, there’s a little river called Schmutter. It’s not a skiing region and there are…
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Plate Arcs from Japan

Plate Arcs from Japan

These pyramidal crystal halos were observed by Anthelene over Sakaiminato city in West Japan. The most interesting features of this high cloud display are the 9°, 20°and 24° plate arcs. Marko Riikonen has made a simulation with HaloPoint2.0 ( 1…
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Double sun effect

Double sun effect

On May 1st 2011 cumulonimbus clouds precipitating hail were commmon. These clouds exhibited clear praecipitatio and later in the evening they featured prominent virga. In these virga a sun pillar formed and as the sun descended behing stratocumulus a double…
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