Heat dome’s triple-digit temperatures fry US south-west BBC.comA punishing heat dome will only worsen. Here’s when temperatures could peak CNNHeat dome brings California’s first heat wave of the season: What residents need to know MSNMillions under extreme heat warnings Wednesday; here are 20 ways to keep cool WFTV OrlandoDangerous Heat Dome Scorches Western US This Week – Videos from The Weather Channel The Weather Channel