King Fire population density. The red dots represent heat detected by a satellite on September 17, 2014. Smoke is drifting to the north and northeast. The beige and brown colors are population density, with the darker colors being the most heavily populated. Lake Tahoe is the large lake on the right side, Sacramento is at the lower left, and Reno is at the upper right. NASA imagery. (click to enlarge)
The image above is based on a satellite photo of the King Fire, between Placerville and Lake Tahoe, California. It was taken on September 17, the day the fire made a huge 16-mile run to the northeast adding 52,400 acres, growing from 18,544 acres to 70,944 acres, almost tripling in size in 24 hours. The photo was taken near the beginning of the big run that day.