Kelvin-Helmholtz waves are vertical waves in the air associated with wind shear across statically-stable regions, the National Weather Service said. They can appear as breaking waves and as braided ...

It was not a bird, a plane, popcorn, cotton balls or giant cow udders in the skies above Bucks County on Sunday evening. So what was it? A unique weather phenomenon. Called mammatus clouds, these ...

As the severe storms rolled across Michigan Tuesday, there was some ominous beauty in the sky. When storms are as strong as they were this morning, the atmosphere can have some spectacular cloud ...

The atmosphere is full of tiny particles floating invisible to the naked eye, yet these microscopic specks wield extraordinary power over our planet's climate system. From desert dust swept thousands ...