The Thunderer el. 10,495 feet (3,199 m) is a mountain peak in the northeast section of Yellowstone National Park in the Absaroka Range. The Thunderer, named by members of the Arnold Hague Geological Survey of 1885 for it propensity to attract thunderstorms is a long high ridge just north of Mount Norris. Prior to 1885, the peak was considered just a high ridge extending north from Mount Norris.