Chinchaga fire
The Chinchaga fire, also known as the Wisp fire, Chinchaga River fire and Fire 19, was a forest fire that burned in northern British Columbia and Alberta in the summer and early fall of 1950. With a final size of between 1,400,000 and 1,700,000 hectares (3,500,000 and 4,200,000 acres; 5,400 and 6,600 mi2), it is the single largest recorded fire in North American history.