Atmospheric rivers are long and relatively narrow bands of water vapor that form over an ocean and flow through the sky, ...

This story was updated to correct spelling in headline. An atmospheric phenomenon called a Pineapple Express is expected to bring heavy rains and snowfall to California and the Northwest this week.

Skier Lenka Lanč captured a rare atmospheric phenomenon, the 'sun candle,' in Austria, which quickly went viral. The phenomenon occurs when sunlight interacts with flat ice crystals, creating a ...