The Great Smoky Mountains fall foliage 2013 show is happening now. At the 5,000 ft elevation and higher the fall foliage colors are peaking. During the next 2 weeks the color show will spread down to the lower elevations. Peak colors are expected the weekend of October 18-20 in the GSM. By late October peak will be over in the highest elevations with color still in the lower elevations but past peak.