Forecasters said temperatures will increase Tuesday and again Wednesday, leading to the potentially dangerous weather conditions over that span before a cool-down begins Thursday.
October heat wave in SoCal brings red-hot temps, excessive heat warning
Record high temperatures were reported in Lancaster, Palmdale and Sandberg. It was 100 in Lancaster on Monday, tying the record for the day set in 2001. It was 100 at Palmdale Airport, breaking the record for the day of 99 set in 1980. It was 91 in Sandberg, tying the record for the day set in 1980.
Excessive heat warnings will be in place from 11 a.m. Tuesday until 8 p.m. Wednesday in the Santa Clarita and San Fernando valleys, where temperatures could reach 108 degrees; and in the Western San Gabriel Mountains and Interstate 5 and 14 freeway corridors, with highs potentially reaching 104 degrees, according to the National Weather Service.
In the city of Los Angeles, augmented cooling centers on Tuesday are scheduled to be open from 10 a.m. to 9 p.m. at these locations:
Fred Roberts Recreation Center
4700 Honduras St., Los Angeles, CA 90011
Mid Valley Senior Center
8801 Kester Ave., Panorama City, CA 91402
Sunland Senior Center
8640 Fenwick St., Sunland, CA 91040
Jim Gilliam Recreation Center
4000 S. La Brea Ave., Los Angeles, CA 90008
Lincoln Heights Senior Center
2323 Workman St., Los Angeles, CA 90031
A red flag warning of critical fire danger conditions will be in effect from 9 a.m. Tuesday until 8 p.m. Thursday for the western Dan Gabriel Mountains and 14 Freeway corridor, thanks to the anticipated heat, gusty northeast winds and low humidity.
Less severe heat advisories will be in place from 11 a.m. Tuesday until 8 p.m. Wednesday in the San Gabriel Valley, the Santa Monica Mountains Recreational Area and eastern San Gabriel Mountains, where temperatures will flirt with the triple-digit mark.
Heat advisories that had been issued for parts of the Antelope Valley were canceled, although "moderate heat impacts are still expected Tuesday and Wednesday," forecasters said.
Although temperatures are expected to back off by Thursday, roughly falling 3 to 6 degrees, forecasters said there is a chance the threat of potentially dangerous heat could persist in some areas.
In areas under the threat of excessive heat, forecasters repeated their standard warning for people to be on the lookout for signs of heat illness, particularly in "the very young, the very old, those without air conditioning and those active outdoors."