natural phenomena and where to witness them

Snow rollers are formed when a thick layer of snow falls on top of a layer of ice. If the temperature and wind speed are right, chunks of snow can break loose and start rolling. As they’re blown along the ground like wintry tumbleweeds, they pick up additional snow along the way. The inner layers are often weaker and less compact, allowing them to be blown easily away by the wind, leaving a large, naturally formed snow donut.

When ocean, air, and temperature conditions are just right, ocean phytoplankton reproduce like bunnies, creating a thick, visible layer near the surface. These algae blooms — a.k.a “red tides” — might look disgusting during the day, but in parts of California and other places where the bioluminescent variety of Noctiluca scintillans bloom, red tide nights look out of this world.

This particular variety of phytoplankton glows blue when agitated, transforming the dark ocean into a giant lava lamp. Watch as the waves light up as they crash, run across the sand to see the ground glow under your feet, or dive in to be surrounded by the bizarre Timex-y glow.

For those of you a bit farther away from the equator, there’s still plenty to see in the sky. Nacreous clouds (also called mother-of-pearl clouds) are extremely rare, but unmistakeable in the dark hours before dawn or after sunset. Because of their extremely high altitudes, they reflect sunlight from below the horizon, shining it brightly down onto viewers below, in stark comparison to the regular ol’ dark clouds in the troposphere.