Reader Juan Motta captured this view of the fire now raging in Asuza Canyon near Glendora. According to reports, the fire has already consumed 700 acres as of this afternoon.
UPDATE 11:30 PM: The National Forest Service says that the fire (now named the Williams fire) has consumed 3,600 acres, and all campers have been evacuated from the San Gabriel Canyon, East Fork Area in the mountains north of Azusa / Glendora where the fire is currently raging. You can keep up with it on Inciweb here.