Orange County and Santa Ana Mountains was placed under an updated wind advisory by the National Weather Service on Thursday ...

The Santa Ana winds occur when there is high pressure to the east, in the Great Basin, and a low-pressure system off the coast. Air masses move from high pressure to low pressure, and the more extreme ...

In Orange County, a red flag warning will be in place through 6 p.m. Thursday for the Santa Ana Mountains and inland parts of the county, including a “particularly dangerous situation” from 7 ...

San Bernardino and Riverside County Valleys and Santa Ana Mountains/Foothills were placed under an updated report for strong thunderstorms by the National Weather Service on Thursday at 1:25 p.m ...

As the wind flows over the Sierra Nevada and Santa Ana mountains, it drops from high elevation to sea level. The sinking air becomes compressed and heats up, and its relative humidity drops.

The agreement permanently protects the 55-acre “South Parcel” — a key part of one of the only passages left for endangered Santa Ana mountain lions to move between coastal and inland mountains. This ...

These winds originate from the Santa Ana Mountains, moving east to west or southwest, funneling through mountain passes toward the Pacific Ocean. Payne detailed the weather setup contributing to ...