Excessive heat warning continues through Friday across Bay Area

KTVU, Allie Rasmus , Amanda Quintana and Kayla Galloway

In Napa, residents will see temperatures in the 90s on Thursday. Besides the obvious impact of hot weather, increasing temperatures can also affect the grape harvest. 
"This heat wave has certainly accelerated the tail end of harvest to where, earlier on, we had some cooler temperatures and everything was going kind of slow and controlled in a great pace. It's accelerated a little bit," said Caleb Mosely, executive director of Napa Valley Grape Growers. "So we're certainly seeing this is one of the busier weeks of harvest thus far."
He says resiliency is key for grapes during hot weather. 
"We plant the vineyard to create a resilient, resilient system for this particular type of heat event. So the cool nights help out exceptionally because they allow the vines to kind of recover the turgidity of the berry," he said.

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