The blowdown area along the Canyon-Norris road burns spectacularly, creating its own 70 mph winds. Park employees pull trailhead registers and signs just ahead of the flames. A photo taken the next day is one of the famous images from the Fires of '88. The North Fork Fire threatens Canyon Village and over 500 people are evacuated within sight of the flames. Both fires are managed by Class I Overhead Teams and a fire camp is opened at Canyon.
Bulldozers dig extensive fireline on the west boundary of the park near West Yellowstone.
The Red-Shoshone Fires merge with the Mink Fire. The North Fork Fire makes a run towards West Yellowstone and retardant bombers make drops within sight of West. Over 9,000 firefighters are now battling the area fires. A large backfire operation relieves the threat to West Yellowstone. The Storm Creek Fire threatens Cooke City and Silver Gate and residents are evacuated.