If you've watched a weather forecast and wondered what low pressure and high pressure systems are all about, we — and the ...

CHIEF METEOROLOGIST GINA DEVECCHIO IS HERE NOW... A WEAK SYSTEM IS CURRENTLY BRINGING LIGHT RAIN TO THE NORTH BAY. SHOWERS HAVE BEEN FAIRLY ISOLATED SO ONLY A FEW LOCATIONS IN NORTHERN SONOMA AND NAPA ...

A "legendary" winter storm is poised to smash into the eastern half of the nation, but Arizona will only see showers and cooler weather.

PENNSYLVANIA, USA — Clippers, officially called Alberta Clippers, are fast-moving low-pressure systems that form in or near Alberta, Canada. The system moves across the Great Lakes, clipping them, ...