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(CNN) — Aerial photos and video show the destructive path that the Ranch and River fires are taking across northern California, with over 150 homes reportedly destroyed so far.

The fires exploded in size on Friday after warm, dry conditions and strong winds stoked wildfires across the state.

The blaze in Napa and Sonoma counties caused evacuations, put thousands of people in danger and caused the closure of some wine tasting.

The fire threatens at least 4,500 structures and is expected to grow even larger and burn throughout the weekend, CNN affiliate KPIX reported, citing officials.

More than 4,300 firefighters were battling the fires in its fifth day, the Cal Fire incident incident page said. Nearly 1,400 personnel were working in Napa County, where more than 2,000 structures were threatened. In Sonoma County, 1,500 structures were under threat, Cal Fire said.

The U.S. Forest Service offered a livestream of the efforts on its social media accounts. Firefighters were using helicopters to make water drops.

In Sonoma County, firefighters and sheriff’s deputies battled flames that ignited the state’s highest peak, Mount Diablo, CNN affiliate KCRA reported.