Southern California heat wave breaks records in Los Angeles today https://allsorce.com/wp-content/uploads/2018/07/7462/southern-california-heat-992371294.jpg
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LOS ANGELES — Southern California baked under a heat wave Friday that forecasters correctly predicted would be one for the record books, with widespread triple-digit highs and increased fire danger. Officials urged residents to take advantage of cooling centers in libraries and other public facilities and to watch out for those who may be especially vulnerable, warning that minor heat-related illnesses can worsen quickly and turn fatal.
“Extreme heat can be dangerous — especially for young people and seniors,” Los Angeles Mayor Eric Garcetti said in a statement.
Torrid conditions were expected to last through Saturday before easing a bit Sunday.
The heat was being produced by a “humongous” dome of high pressure that was also spreading oppressive conditions into parts of Arizona, Nevada and Utah, the National Weather Service said.
“Today will be one for the record books,” the Los Angeles region weather office said before sunrise, and within a few hours records began to fall.
A boy cools off in the water play area at Grand Park in Los Angeles, California, on July 5, 2018, ahead of a heat wave in the Los Angeles area.

Frederic J. Brown/AFP/Getty Images
In downtown Los Angeles, it was only 10:15 a.m. when the mercury topped the July 6 record mark of 94 degrees set in 1992 and kept on rising, hitting 100 before noon. Many other areas were sweltering in record triple-digit temperatures earlier.
The offshore flow of air pushing back the normal moderating influence of the Pacific Ocean produced startling early morning temperatures. Many Southern California locations reported temperatures above 80 degrees before dawn. At 3 a.m., it was 98 degrees in Gaviota on the Santa Barbara County coast about 125 miles west of Los Angeles, the weather service said.
Maximum temperatures were predicted to be 20 to 25 degrees above normal virtually everywhere. The Woodland Hills area of Los Angeles, for example, was forecast to reach 117 degrees.
Evelyn Taft, a meteorologist at CBS Los Angeles, called the conditions “a recipe for a fire.”
“Some of the records that we’re expecting are breaking records by a good 10 degrees,” Taft said. “Because we have this kind of heat and offshore conditions, and say you have a little bit of dry lightning that comes in. That’s it.”

While beaches offered relief from the furnace-like conditions, forecasters warned that a lingering south swell from former Hurricane Fabio would continue to combine with a local northwest swell to produce dangerous rip currents and the possibility of sneaker waves.
“You combine the crowds coming out, the dynamic environment, the swell picking up, we’re expecting to be very busy the next few days,” Huntington Beach Marine Safety Lt. Claude Panis told CBS News.
Residents toughing it out in the valleys around Los Angeles and in the inland region to the east faced the possibility of unhealthy air quality. Air pollution regulators said the conditions were likely to produce an atmospheric inversion that would increase ground-level ozone, which is linked to a host of respiratory troubles ranging from trouble breathing to asthma attacks.

The highest fire danger stretched from Los Angeles County westward into several counties up the coast where a north wind added another element to the mix of hot, dry air and parched vegetation. Elsewhere, the fire risk was characterized as elevated.
An additional threat was likely to develop by Sunday with the arrival of seasonal monsoonal moisture and the possibility of thunderstorms.
“Any lighting strike is going to be a concern,” said Alex Tardy, a meteorologist with National Weather Service in San Diego.

© 2018 CBS Interactive Inc. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed. The Associated Press contributed to this report.

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