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In the morning of 3rd Decemeber Marko Mikkilä packed his halo gear and drove 200 kilometers to Sotkamo, where snow guns were running at the local ski resort. Once he arrived, there was fog, but it was mainly water fog…

This splendid display was seen last night in Sirkka, Finland. The photographer, Timo Veijalainen, tells the display lasted for about an hour after he noticed it and that the temperature was close to -10° C. Sirkka is a settlement right…

46° contact arc was suggested theoretically in 1980 by Robert Greenler. Halo enthusiast have since kept the 46° contact arc in mind, but it was not until 2006 that first photos surfaced when a well developed diamond dust display was…

This display, with sharp and rather strong Moilanen arc was photographed a week ago by Jay Brazel in Silvercreek-Granby, Colorado, U.S.A. Full sized photo ( 1 ) and more detail on SpaceWeather ( 2 ).

Circular halos on snow surface are common sights, but on ice surface halos are seen much less often. When ice surface halos do show up, they are made by oriented crystals and can be rather bright. Such was the case…

Helic arc is no news in snow gun generated diamond dust displays, but in high clouds the halo is extremely rare. Of the latter type, shown here is the latest case. The display was seen in Alpharetta, Georgia, U.S.A, in…

Winter’s first display in a spotlight beam was captured in the weekend by Jukka Ruoskanen. Click on the image to see the rest of his photos.

Here is an example of Moilanen arc with not even a hint of Parry or tangent arc. However, unlike in the previous post photo, there might be a suggestion of parhelia here. If there occurs a display where Moilanen arc…

This recently seen display, although not a bright one, highlights an important issue. There is the Moilanen arc but no plate arcs. “Not the slightest hint for circumzenith arc or sundogs. Absolutely nothing”, writes Bertram Radelow, who photographed the display…