Nearly 100,000 San Diegans could loose power during the next round of power shutoffs after the National Weather Service issued another Red Flag Warning for the region for Monday and Tuesday as Santa Ana winds return.

A red flag warning due to wildfire danger will be in effect from 10 a.m. Monday to at least 10 p.m. Tuesday for inland valleys and mountain areas throughout the county, according to the National Weather Service.

The National Weather Service issued a Red Flag Warning starting Monday for San Diego County's inland valleys and mountains.

The National Weather Service's Los Angeles page screams “Particularly Dangerous Situation (PDS)” in hot pink letters against a gray background in a rare warning aimed at seizing attention ahead of extreme wildfire risk that's predicted to start in Southern California at 4 a.

The National Weather Service expects lows of 45 degrees on Tuesday, Wednesday and Thursday nights in San Diego. The Housing Commission and service providers decide whether to activate the inclement weather program each morning.

Dry air and gusty winds will continue throughout San Diego County through the middle of next week, followed by cooler and cloudier weather by the end of the week and possible light precipitation by next weekend.

"If fire ignition occurs, conditions are favorable for very rapid fire spread and extreme fire behavior," the NWS warns.

San Diego County, which is in the midst of one of the driest periods on record, will be lashed by unusually cold and expansive Santa Ana winds early Wednesday that could spark wildfires, snap

A fire weather warning will be in effect from 4 p.m. Monday until at least 6 p.m. Wednesday for inland valleys and mountain areas, according to the National Weather Service. Coastal San Diego will see mostly sunny weather through the week, with highs in the mid-60s.

The National Weather Service has issued a Red Flag Warning for San Diego County due to high winds and low humidity.

The National Weather Service on Wednesday extended the wildfire warning through the end of the week for much of East County.

San Diego County is experiencing the driest start to the water year in recorded history, according to meteorologists, but some climatologists are hopeful that a La Nina season means rain on the horizon.