An uptick in Santa Ana winds Wednesday afternoon through Thursday, combined with critically dry vegetation and low humidity, will result in elevated to locally critical fire weather conditions in San Diego County through late Thursday.

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

A critical fire threat will continue across County as Santa Ana winds and dry conditions persist through early Friday, according to the National Weather Service.

With the strongest gusts expected on Tuesday, extreme fire condition threats will prevail until midweek, L.A.-area fire chiefs say.

This week, the Santa Ana winds are expected to hit the region, possibly sparking more fires in Los Angeles, Orange, Riverside, San Bernardino and/or Ventura counties. The National Weather Service declared a rare PDS, or "particularly dangerous situation," red flag warning for the Los Angeles area ahead of this week.

The Santa Anas are expected to be most powerful Monday night into Tuesday. Fire services across the region say they are ready.

Much of inland San Diego County was whipped yet again by a strong Santa Ana wind event Monday into Tuesday, contributing to risky fire conditions as the region remains bone-dry.

San Diego County remains under the grip of another round of moderate to strong Santa Ana winds, paired with extremely dry air, elevating critical fire weather concerns.

The wet weather will bring relief to Southern California after a prolonged period of dryness, but there’s concern that any bursts of heavy rainfall could cause flooding.

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The evacuation area for the Border 2 fire stretches east to state Route 94 and west to Lower Otay Lake, warnings issued for southwest side of lake.