Mount Washington (Abenaki: Agiocochook) is an ultra-prominent mountain in the state of New Hampshire. It is the highest peak in the Northeastern United States at 6,288.2 ft (1,916.6 m) and the most topographically prominent mountain east of the Mississippi River.
The mountain is notorious for its erratic weather. On the afternoon of April 12, 1934, the Mount Washington Observatory recorded a windspeed of 231 mph (372 km/h) at the summit, the world record from 1934 until 1996. Mount Washington still holds the record for the highest measured wind speed not associated with a tornado or tropical cyclone.