Scorched 69,438 acres across Lake, Colusa, and Yolo counties.
The fire was sparked by a gas-powered water heater used for an illegal cannabis grow. ROCKY FIRE LAKE COUNTY
It generated massive pyrocumulus clouds reaching 35,000 feet, which then collapsed, creating erratic downdrafts and "spotting" embers miles ahead of the main front. Scorched 69,438 acres across Lake, Colusa, and Yolo counties
Suppressing the blaze cost $46.1 million (roughly $59.4 million today). The Surprising Cause 438 acres across Lake
Forced the evacuation of approximately 13,000 residents.