



Most pillars are produced by glints from plate habit crystals in cirrus or altostratus cloud. In very cold weather, low level



The plates wobble several degrees from horizontal. the greater the wobble the taller the pillar.

Sun pillars are unusual among the ice halos in that they are only seen when the ice crystals producing them are very poorly aligned.Most pillars are produced by glints from plate habit crystals in cirrus or altostratus cloud. In very cold weather, low level diamond dust crystals can give intense pillars.The plates wobble several degrees from horizontal. the greater the wobble the taller the pillar.

