Monday's red-flag warning is a PDS, which stands for "particularly dangerous situation." But what does that mean? An NWS ...

The Santa Ana winds are dry, powerful winds that blow down the mountains toward the Southern California coast. The region ...

Multiple counties in Southern California were under red flag warnings from the NWS early Monday, with the service warning of ...

Katabatic winds? Adiabatic compression? Time for a thermodynamics lesson! The record lack of rain has also made this Santa Ana event different.