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 ...

Riverside County officials touted significant strides in the multiyear effort to restore the Santa Ana River bottom.

LOS ANGELES (KABC) -- Southern California will see another day of pleasant conditions on Saturday, but then a big warmup will bring summer-like conditions to the region. The warmup will be ...

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Tuberculosis (TB) rates are going up all over the U.S., even here in Orange County. Tuberculosis is an infectious disease caused by the bacterium Mycobacterium tuberculosis. It primarily affects the… ...