Santa Ana winds are expected to slightly decrease before ramping up again Wednesday evening in the Santa Clarita Valley.

Dry Santa Ana winds are expected to peak early Tuesday morning in the Santa Clarita Valley, bringing dangerous fire conditions to the area.

With the Palisades and Eaton fires still not fully contained, a new Southern California blaze sparked up Wednesday north of Santa Clarita, burning more than 9,400 acres in a matter of hours, forcing evacuations by the thousands and shutting down sections of the 5 freeway.

Southern California braces for a ferocious return of fire danger as the National Weather Service issues its most urgent warning for extreme fire weather.

The National Weather Service has issued another rare Particularly Dangerous Situation warning in anticipation of Monday's Santa Ana wind event.

The new alert is an unprecedented fifth issuance of a “particularly dangerous situation” enhancement to a red flag warning in a single season by the weather service’s Oxnard office, which covers Los Angeles, Ventura, Santa Barbara and San Luis Obispo counties.

The Santa Ana wind forecast for Southern California has worsened, and forecasters now expect to issue a red flag fire weather warning starting Monday.