From: Carmel Valley Locals
The area in which the River Fire first gained traction hadn't had a fire in recorded history. This helped feed the flames that destroyed 43 structures and put about 20,000 people under evacuation warning.
Cal Fire previously attempted to carry out controlled burns but was stopped several times between 2013 and 2017 by members of the public who were leery of the controlled burn coming too close to their homes.
From: The Californian