Yesterday afternoon Cal Fire announced it had determined the source of the fire. A power line on a PG&E transmission tower in the Pulga area broke free and slapped into the tower. Presumably the high winds whipped the wire into fire; a "flash mark" was observed on the tower, where the wire hit: in that "flash mark,” there be the fire. Meanwhile, near Concow and Rim roads, unspecified "vegetation"—we'll guess a tree, or trees—"made contact" with other power lines, sparking a second fire. That second fire was subsumed in the Pulga blaze, as it raced into Concow, Paradise, Magalia, the canyon, and wherever else it felt like going.