More than 100 additional homes in Rancho Palos Verdes will have their power cut because of worsening landslides in the area, city officials said Monday.

This time, 105 of the 270 homes in the Seaview neighborhood will see the lights turned off as of 7 p.m. Monday, officials said. The shifting earth puts electrical equipment at risk and could spark a wildfire among other dangers if power lines are electrified, officials said.

The power shut-off will impact a large swath of Seaview, a Midcentury Modern tract designed by master architect Paul Williams in 1960 that features touches such as stone fireplaces, space-age light fixtures and eye-popping bursts of color atop an ocean bluff.

City officials said 47 homes will be without power for just 24 hours, but 38 will have to do without for one to three weeks, and 20 more are losing power indefinitely.

This is the second power shut-off in as many days in the area, a peninsula about 30 miles south of downtown Los Angeles famous for its sea breezes, gorgeous views, and expensive homes. On Sunday, officials shut off power to 140 homes in the Portuguese Bend area of Rancho Palos Verdes, about a mile up the coast. In that case, officials also issued an evacuation warning, meaning residents had to prepare to leave should they be ordered to do so.

Other neighborhoods could also lose power if conditions worsen.

The crisis comes because landslides in the area, which have been shifting the earth slowly for decades, have suddenly accelerated, moving as much as a foot a week recently. Among the causes, officials have said, are the epic rains of the last two winters. Roads have buckled. Homes have crumbled.

“There is no playbook for an emergency like this one,” Los Angeles County Supervisor Janice Hahn said Sunday. “This is a crisis that is getting worse by the day.”

Hahn said she has committed $5 million from the county to respond to the disaster, but that the community needs state support. She said she wanted Gov. Gavin Newsom “to come to Rancho Palos Verdes and see the landslide for himself.”

City officials have said they cannot solve the problem by themselves. The city, which has a population of about 42,000, has been pouring resources into a solution. The landslide affects only a small portion of the city’s homes, but fixing it will require much more than the city can do, officials said.

The Rancho Palos Verdes City Council is set to hold a special meeting at 3 p.m. Tuesday to declare a local state of emergency. The council could also vote to authorize the mayor to ask Newsom to declare a state of emergency and provide assistance.

“This is much bigger than the city itself, and without help from our partners at the county, state and federal level we can’t come up with real solutions to retard the land movement,” City Councilmember Dave Bradley said.

Southern California was bracing Monday for a heat wave expected to bring triple-digit temperatures to much of the region this week.

Driven by weak offshore winds and a heat dome over the southwestern United States, temperatures are forecast to rise over the course of the week before peaking Thursday and Friday. Portions of the Los Angeles Basin could reach 113 degrees by the weekend while the mercury could climb to 119 in the Coachella Valley.

“We are in what’s already the hottest time of the year climatically, and we are going to be 10 to 15 degrees above normal, in almost every area from the beach to the deserts,” said meteorologist Ryan Kittell of the National Weather Service’s Oxnard office.

Labor Day was already scorching in many communities, with the San Gabriel Valley forecast to hit 100 degrees and the western San Fernando Valley to see temperatures as high as 103. L.A. neighborhoods closer to the water were to enjoy relatively more moderate conditions in the 80s and low 90s.

Woodland Hills, traditionally the hottest place in L.A., was expected to have temperatures of up to 109 degrees Tuesday, 110 Wednesday and 113 Thursday before falling slightly to 111 on Friday.

In Santa Clarita, temperatures were expected to skyrocket from an uncomfortable 95 degrees on Monday to an oppressive 106 by Thursday. In Palm Springs, Labor Day temperatures of 107 to 111 degrees were to give way to temperatures of 114 to 118 degrees by Thursday.

Dangerously hot conditions were affecting a swath of the country including Nevada and Arizona. Kittell, of the National Weather Service in Oxnard, said that because days are shorter than in June and July, desert areas experience less sun and as a result, there are fewer differences in temperature between them and coastal communities.

He said people who live close to the beach and don’t have air conditioning may not be prepared for the heat.

“Make plans now for how you are going to stay cool,” Kittell said.

Temperatures will ebb slightly over the weekend, but it is not clear when the heat wave will subside.

However uncomfortable, the heat this week is not expected to break records. The record for the first week of September was set in 2020 when temperatures reached 121 in Woodland Hills.

The Record Fire that started near San Jacinto, California, burned more than 650 acres on Sunday, according to officials.

The brush fire was reported at around 2:15 p.m. near Soboba Road and Gilman Spring Road north of San Jacinto, according to the Riverside County Fire Department.

An investigation by fire officials determined the fire was human-caused.

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An investigation by fire officials determined the fire was human-caused. (Riverside County Fire Department)

The fire remains at 0% contained as of 10 p.m. local time, the fire department said.

At least six firefighters working to put out the fire were hospitalized with minor injuries. Ground units and water-dropping aircraft assisted in battling the fire.

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At least six firefighters working to put out the fire were hospitalized with minor injuries. (iStock)

Evacuation warnings were issued for parts of Riverside County in response to the fire.

A care and reception center has been opened at Nicolet Middle School in Banning.

Evacuation warnings were issued for parts of Riverside County in response to the fire. (iStock)

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The fire remains under investigation.