Preliminary Revised Standard Project Hurricane Criteria for the Atlantic and Gulf Coasts of the United States [open pdf - 2MB]
"This draft report gives some revisions to a study covering the same subject published in 1958. In the last two years effort has been directed toward providing more regional details in the analysis of the generalized meteorological parameters used to describe hurricanes. Results of that study, to be completed in 1974, may necessitate changes in standard project hurricane (SPH) criteria. Another draft study, giving similar meteorological criteria for probable maximum hurricane (PMH) wind fields, will also be effected. Studies now in progress are reevaluating these criteria with plans for a published report sometime in 1975. This report, based on these more detailed studies, will provide consistent SPH and PMH wind fields."
National Oceanic and Atmospheric Administration, National Weather Service Memorandum HUR 7-120
Government Printing Office: http://www.gpo.gov/fdsys/