Even small differences, sometimes just a degree or two high in the atmosphere, can completely change what eventually reaches the surface.

From nearly invisible black ice to freezing rain and sleet, here's how common winter weather hazards form, why they're so ...

Clouds need two essential ingredients to form, and both must be present simultaneously for the process to begin. There are two ingredients needed for clouds to form: water and nuclei. The first ...

When big winter storms move in, they can bring nasty weather that shows up as different things in different places — maybe it ...