Southern California is experiencing a severe heat wave, with temperatures reaching dangerous levels. CBS LA Chief Meteorologist Paul Deanno reports that this heat wave is part of a broader pattern of extreme weather affecting the western United States. The National Weather Service has issued heat advisories and excessive heat warnings for several counties, particularly affecting inland valleys, deserts, and urban centers. Health officials are urging residents to stay indoors during the hottest hours, hydrate adequately, and wear appropriate clothing. Public cooling centers are available for those without air conditioning.