What are light pillars?

Light pillars are atmospheric optical phenomena that appear as vertical columns of light extending from a light source. The pillar in the video above was spotted in Lacombe, Alberta.

Light pillars are amazing atmospheric optical phenomena that can originate from natural sources like the Moon (moon pillars) or from artificial sources such as streetlights or other bright lights. The light pillar in the video originated from a bright artificial light in Lacombe, Alberta.

Light pillars happen when light is reflected off flat, hexagonal ice crystals suspended in the atmosphere, typically in very cold weather. These ice crystals act like tiny mirrors, reflecting the light and creating the illusion of vertical beams.

Light pillars are most commonly seen in cold climates where ice crystals are present in the air, often in the form of thin clouds or near-ground frost. Check the WeatherRadar to see if cold air and clouds are in your forecast. If you're lucky, you may get to experience this phenomenon!