Light pillars are a beautiful wintertime phenomenon. Clouds don’t have to be present for them to occur, however, cold temperatures have to be in place. Light pillars usually occur when ...
PITTSBURGH (KDKA) — Light pillars are becoming visible around the area thanks to the cold temperatures the Pittsburgh area has been experiencing as well as moisture moving in with the next ...
Light pillars are optical phenomena caused by reflections ... The more crystals there are vertically, the longer/taller the pillar is. Bitterly cold air is sufficient to support the formation ...