Yesterday and last night North Boulder experienced a thousand-acre wild fire. Almost 11000 homes were evacuated, but only 4 structures burned. High winds (gusting to ~73mph, ~116kph) damaged electricity lines which started the fire, which was then spread rapidly in the windy conditions. Several ridge lines burned, and the fire was visible more than 20 miles away.
I drove around the town at about 9pm, stopping to photograph the fire from several different locations. NCAR (in south boulder) was a good place to watch from (and more than 5 miles away from the blaze), but the photos from Violet park (adjacent to the fire, in North Boulder) was better for detailed shots... the pic below was shot from there.