Extreme Wind Speeds is a historical publication archived at the National Climatic Data Center (NCDC). Extreme wind speeds at 129 stations in the contiguous United States was produced by the NCDC for the U.S. Department of Commerce, National Bureau of Standards and published under the NBS Building Science Series 118. The National Bureau of Standards became the U.S. National Institute of Standards ... and Technology. The primary source of data used in the preparation of this study was the original record of surface weather observation forms from which the recorded fastest-mile wind speeds were extracted. This publication on microfiche presents narrative descriptions and formulae utilized in the preparation of the wind data for analyses, and the statistical methods used in these analyses. Data presented for each of 129 selected stations are: 1) recorded (anemometer elevation) and calculated (10) meters above the ground) fastest-mile wind speeds (mph), and 2) predicted extreme wind speeds for return periods of 2 to 1,000,000 years.