As wine country turns into wildfire country, some winery owners in Calistoga are breathing a sigh of relief, watching the Pickett Fire burn away from

Wildfires have cropped up in different regions across California over the past several days as a record-breaking heat wave blankets most of the state, with more fire activity expected amid a spate of dry lightning and thunderstorms.

According to Cal Fire, the blaze had reached 4,690 acres as of Saturday, and was 7% contained, with crews working overnight to keep the fire within control lines.

As the Pickett Fire outside Calistoga grew to 2,133 acres, Napa County authorities ordered evacuation from a fourth Upvalley area as hundreds of firefighters battled the blaze.

In Napa County, the Pickett Fire has scorched over 1,000 acres in Calistoga, threatening several wineries and prompting evacuations