. “?- .. fit tills not changed from that originally glvwn on X-Ray mtnna thin.. briefing, the Commnder, Air Foroes, requested that e check be nade on . the weather during the early aorning hours of IWIneaday, 1.4April, to test the weather reconnaissanceprooedttree.Of p*ciPel the aacuraoywith which clouds could be obaemd c~ce~ was on a totally dark night. The airoraft reported scattered low C1OWS ~ith tops tO 15?~ feet and some isolated thunderstormsend indicated that the clouds could be obaermd with moderate ease againat the dark background of the sea at altitudes of I.0,000feet and higher. By the morning of X-Ray tius one, the weather was again of a typlcal tr~pical nature, four to five tenths cumulus, tops below lf),000 feet, some cirrus and scattered rain showers. It appeared that the weather had improved considerably and would contlnw slow improvementas had been forecast. At the lM)M briefing on X-Ray mlnua one, (14 April), the middle clouds originally predioted were elld.nated from the foreuaat. The prediction of winds continued to call for winds rather low Inwelocity end directions from the south and southwest in the lower levels. Three weather rwwmnaiuasnoe airoraft were used on X-Ray minua one day. These planes flew weather miesiona to the notth and west end ●ast of Enlwetok. On X-Ray minus one, a aumary of aircraft weather reporte Indlaated the weathm was definitely lmpr~ and there was every expectation of su.itablsweather for the X-Ray firing. During the eftemmon briefing at 1700M on X-MY mime one, the foreoaat of olmds was unaltered froE the previotaaone. 39 =0’HOH XII . The wind fore-