Warning issued as one of the longest heat waves of the year heads for Bay Area

Over the weekend, confidence increased in “dangerously hot conditions” that are likely to contribute to extreme heat risk for the entire population, not just people sensitive to heat, Joe Merchant, a meteorologist for the weather service’s Bay Area office, said Sunday. The dome of high pressure making its way toward the region was initially expected to be fairly compact and progress more quickly, but forecasters determined it’s now expected to amplify and push the jet stream north, leaving the sweltering weather locked in place with nowhere to go. Temperatures could...