Complex halo event at -8F

For about 2 hours, a complex halo developed over southeast Wyoming while air temperature ranged from -21F to -6F.

 

The display included:

 

Sun Pillar: (16%)*

22deg Halo: (100%)

Sun dogs (Parhelia): (73%)

Parhelic arc: (4%)

Circumzenith Arc: (13%)

Supralateral Arc: (4%)

Upper Tangent Arc: (27%)

 

*The percents shown were taken over 10 years in Germany whenever a halo occurred. In colder climates, one could expect these frequencies to be much higher.

 

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Done