Southern California's broiling heat wave: How long will it last?

Southern California is facing a prolonged heat wave, with Thursday expected to be the hottest day. Dangerous temperatures and warm overnight conditions have triggered heat alerts across the region, with inland communities reaching the upper 90s. Although the worst of the heat wave is passing, broiling conditions will persist through the weekend. Modest relief is anticipated following this period of temperatures climbing well above normal levels across the Southland and surrounding areas.