Update 8/26: This fire was called the Bighorn Mountain fire - the Forest Service reports that the fire was caused by lightning and in a fly over on 8/24 (the morning after the fire started) no fire activity was observed (report here). Bighorn Mountain (Wildfire) - WildfireAZ.com, Wildfire burning on Pusch Ridge - Tucson News Now.

Midnight Update: I could still see two very small/faint orange dots on the mountain, but the fire appears to be very very small at the moment compared to the picture below...

If you are in Tucson you may have seen the smoke and flames near Pusch Peak - I haven't seen any news yet about this fire but here is a picture from town.