Joint Task Force SEVEN _ , . Operation Plan CTG 7.3 No. 1-53 Task Group 7.3 Washington 25. vu, C, 7 December 1953, 120CR Annex K Typhoon and Tidel Wave Plan 1, a, General Characteristics of Typhoons. (1). A typhoon is defined as a violent cyclonic storm of tropical origin with a wind fo.ce of at least 64% knots, The areca of deatructive winds within a typhoon is extrenely variable, ranging setwcen an approximate circle of 50 miles in diameter, to es large as a circle 900 miles in dianeter, (2) The tywhoon season in the Pacific is hetween the monthe of May and January. Typhoons, however, may occur in any month of the year. The MAHSHALL Iglands are located on the castern fringe of the Typhoon Belt" of the Westen Pacific and are frequently subjected to tropical storms, a few of wnoich attain typhoon intentity. For example, typhoon HsST2R passed over ENIWETOK Atoll in December, 1952. (3) The destructive force of a fully develeped typhoon cannot te everestinatei, and the surest iavitation to disaster is to ignore ita cap— abilities, (4) Mooring buoys for najer units are designed to hold in winds up to approximately 50 knots, be. hours, The following conditions of typhoon readiness are established: (1) Condition I, (2) Condition II, (3) Condition III, 24 nours, hours, 2. Winde of 5@ knots or more ar*icipated within i2 Winds ef 50 knots or more . ~ated within Winds of 50 knots or more anticipated within 48 . Mission, a, To avoid the path of the typhoon, or if tnis ig not possible, te make maxinunm preparations and texe all possible precautions to minimize its effect, 3. Tasks. a, (Upon receipt of a typhoon warning), CTU 7.3.0 .- Special Devices Unit (1) Evacuate personnol and critical material from snot locations as required by CTG 7,1 K-1