valushle edjunedy Nee daily winds alefy rons wore sade reutinaly, with the runs being stopped up at selocted stations pricr te a set poricd te ae many ae eight (8) runs por day. Mune te maximum cbtainable heights were required; the averages wore above 65,000, foct; with aeny runs reaching 120,000 feet. . (2) Planning forecasts as eriginally conccived woro issucd forty-eight and thirty-oight houre prier to cach shet hour. Tho forecasts theaselves conalatod of winds fer the shet site for cack ton thousand foot lovel from the surface toe mincty thousand foot. Tho winds were forccast to sixtoan paints of the compase and for an interval of speod to the nearcst five knots. sO . (3) Fellovdng the eclection of a specific shot tine, detailed forecasts were issued at, twonty-four,thirtocs, eight and four hours price to H hour, ‘the details of these forecasts wero far in axcess cf those in the planning fervsaste; winds were forecast te the nearest ten degrees and te the knot, fer twe thousand feet increments from the aurfaco ta twenty thousand foet, for fivo thousandfeet incroments from twonty thousand te seventy thousand fect, and for eighty and nincty thousand fost. (4) The above forecasts were obtained by tho Radsafo personnct at specific periods pricr te each shet. ‘The forecasts, along ith all available pertinent cbecrvations, wore plettod as hodographs (wind voctor diagrems) using a particle rate of fall of 5000 foct per hour te sormlisa theplet fer further sonveniont computations. | ee adr Particle Prajoctory Forecasts. In addition to the wind forceasts thamolves, suxiliary air particis trajoctory forecasts wero 53