National Climatic Data Center (Continued) 
Mariners Worldwide Climatic Guide to Tropical Storms at Sea 
Crutcher, H., NAVAIR 50-1C-61 
Publication Date: 1974 
Location: Worldwide 
Period of Coverage: N/A 
Contents: This 425-page guide provides narrative information about where and 
when tropical storms occur, their frequency of occurrence, and the general 
paths they follow. The narrative descriptions are supplemented with numerous 
charts, graphs, and diagrams. Also included are aerial, satellite, and sur- 
face photographs of tropical storms, and average sea conditions from 1/4-ft 
waves to greater than 3/-ft waves associated with wind speeds from calm to 
130 knots. The charts are presented in two sections: storm track and fre- 
quency maps, and tropical cyclone roses. 
The track and frequency maps section provides charts by season and/or by 
10- to 30-day intervals during the tropical storm season for the North Atlan- 
tic, Eastern, North Pacific, Western North Pacific, Southeast Indian, South- 
west Indian, and Southwest Pacific Ocean basins, and the Arabian Sea, Bay of 
Bengal, and Indochina oceanic areas. Each chart presents tracks preferred by 
tropical storms and their frequency along these tracks, and isopleths showing 
the scaler mean (average) speed, in knots, of storm movements based on 12-hr 
displacements. 
The tropical cyclone roses section presents monthly and annual charts for 
various storm stages (tropical cyclone, tropical storm, hurricane, and tropi- 
cal storm-hurricane combined) for the North Atlantic (including the Caribbean 
and Gulf of Mexico), Eastern North Pacific, Western North Pacific, Southwest 
Pacific and Australian area (including the Southeastern Indian Ocean), South 
Indian, and North Indian (including the Bay of Bengal and Arabian Sea) Ocean 
basins. The storm roses are presented for 5-deg latitude-longitude quad- 
rangles. Each storm rose depicts statistics on the direction and speed of 
12-hr movements for tropical cyclone centers. The probability, in percent, of 
having at least one storm in any given year is also shown. 
Available From: Superintendent of Documents 
US Government Printing Office 
Washington, DC 20402 
(202) 783-3238 
(GPO Stock No. 003-019-00025-0) 
Additional Information: This publication was published by the Naval 
Weather Service Command and was prepared by the 
NCDC in cooperation with the Naval Weather 
Service Environmental Detachment, Asheville, 
NC. 
II-12 
