Tropical Storm Tracks for the North Atlantic, East, North, and Western Pacific (DSI-9697) is a historical digital data set archived at the National Climatic Data Center (NCDC). This file contains dates, tracks, wind speeds, and central pressure values (if available) for all tropical cyclones occurring over the 110-year period, 1886 through 1996. The tracks represented in the file are the 'best ... tracks'. Best tracks are constructed by the National Weather Service and the National Hurricane Center during post-analysis and all available information, including aircraft reconnaissance fixes, satellite imagery, land based radar fixes, ship reports, station reports and ocean buoy reports, are considered. Some discrepancies are found by the analyst, therefore, subjective interpretations are made and then smoothed to draw the 'best tracks'. The tracks are then digitized into three record images for each storm; Classification, Storm Data, and Title.