Excessive heat warning in Bay Area for hottest weather in years San Francisco ChronicleWeather tracker: Scorching temperatures in California threaten heat records The GuardianSome May Swelter Even More This July – Videos from The Weather Channel The Weather ChannelUrgent warning for Fourth of July revelers as scorching heat wave set to target 12 states Daily MailCalifornia weather: Heat wave forecast prompts warnings and advisories San Francisco Chronicle