A record-breaking heat wave combined with gusty Santa Ana winds has created extreme fire conditions across parched wild lands in the Southland, forecasters warned.
Red flag warnings for Los Angeles and Ventura counties have been extended until 3 p.m. Friday with abysmally low humidity worsening already tinder-dry conditions. Wind gusts of up to 50 mph are possible in mountain areas, the National Weather Service said.
The circumstances are such that if a fire were to ignite, "there could be rapid spread of wildfire," the weather service warned Thursday.
The combination is keeping temperatures 15 to 20 degrees above normal, tying or breaking records across the Southland.
On Wednesday, Point Mugu Naval Air Station, Fullerton and Camp Pendleton reached 90 degrees, tying for the day's highest temperature in the nation, according to the National Weather Service.
Conditions were expected to remain largely unchanged for Thursday, with temperatures ranging from the 70s to the upper-80s in the coastal and valley areas, according to the weather service.
The ridge of high-pressure is so strong, that daytime temperatures in the 80s are expected to last through Monday in the Los Angeles region before starting to cool slightly on Tuesday.