Description: This Historical North Atlantic and East-Central North Pacific Tropical Cyclone Tracks file contains the 6-hourly (0000, 0600, 1200, 1800 UTC) center locations and intensities for all subtropical depressions and storms, extratropical storms, tropical lows, waves, disturbances, depressions and storms, and all hurricanes, from 1851 through 2006. The origional data was modified by HRRC for the display in Texas Coastal Planning Atlas.