Concertgoers and employees described people dropping left and right from heat stress at a concert that happened to be called "Hot Summer Night."
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At least two people wound up in ambulances.
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"There were a lot of Medics running around and people passing out. I drank 6 to 7 water bottles. It's pretty hot," attendee Alexis Halikas said.
Earlier in the day, a 3-year-old girl in Petaluma locked herself in her family's new car. Her sister called for help and an engine company broke a window to rescue the girl.
The extreme heat sparked a fire last night at a condominium building on Rossmoor Parkway in Walnut Creek. Fire officials say when a man started his BBQ, the propane canister flared. Several condos were destroyed.
PHOTOS: Heat wave sweeps across Bay Area
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Officials warn that the risk of combustion increases with high temperatures.
To escape the sweltering heat, many headed to movie theaters or ice cream stores.
A gang of 10-year-old girls offered sage advice on how they coped with 108 degree heat.
"I've been having ice cream four days in a row," one said.
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Dublin's The Wave water park opened up a free swim at 6 p.m.
"This makes everyone happy. At first it was irritating and when we got here it's very relaxing," Christine Ivory from Berkeley said. Everyone's in a better mood now? "Yes we are."
All can say they survived the great heat wave of 2017.
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