Early morning joggers try to beat the heat as they run along Echo Park Lake near downtown Los Angeles on Friday, July 6, 2018. Forecasters say temperatures will soar into triple digits throughout almost all of Southern California as a brief but intense heat wave broils the region. (AP Photo/Richard Vogel)
A construction worker rehydrates on site during a blistering day of heat in downtown Los Angeles on Friday, July 6, 2018. Southern California baked Friday under a heat wave that forecasters correctly predicted would be one for the record books, with widespread triple-digit highs and increased fire danger. (AP Photo/Richard Vogel)
LOS ANGELES — Southern California sizzled Friday in record-breaking heat from the desert to the sea, with widespread triple-digit highs and withering conditions that stoked wildfires.