An atmospheric river is expected to hit California later this week, bringing heavy rain and wind to much of the state.

Months after devastating flash floods carved a muddy scar through Valencia, an effort to save some of what was lost continues ...

Rain on burned hillslopes can trigger dangerous floods and debris flows. Those debris flows can move with the speed of a ...

Freezing Temperatures: A blast of Arctic air can be dangerous, especially when combined with blustery winds. Track cold ...