The fire, which burned in the hills surrounding several large cities, such as Fairfield, Napa, and Vacaville, destroyed 1,491 structures and damaged a further 232.

[9] By the morning of August 18, the complex of fires burning through much of the Napa County region collectively encompassed over 12,000 acres.

[11] Evacuation warnings were put in place for the rural area in the hills between Healdsburg and Stewarts Point as the fire burned virtually unchecked.

These mandatory evacuations were put in place for the Berryessa Highlands and Spanish Flat areas as the fires rapidly raged towards those communities.

[13] By 11:30 pm, the Hennessey Fire was seen still burning at a critical to dangerous rate of spread as the massive conflagration had traveled 13 miles to the southeast scorching the Vaca Mountains and rolled down the canyons towards the city of Fairfield and Vacaville.

[10] This dangerous fire spread spurred additional mandatory evacuations for north Fairfield and northwest Vacaville as the fireline made its way down Mix Canyon Road to Pleasants Valley Road and proceeded to destroy hundreds of structures in areas to the west and north of the cities.