WTX)ROIQGY PAHTFO~ X-RU,YD* 1. ~ntroduction. The weather after Peter X-Ray Day was characteristically tropicau LOW cUmUhS and very high thin cirrus were the predo~ hating cloud typee. Widely scattered li~ht showers occurred freq- uently, especially during the afternoon and ~ly morning. A8 X-m Day approached, the weather slowly deteriorated. ?h,iswa due to the approach of sn eastward travelllng t~ou@, marking the ativanceof a mass of air having itm origin over the Asiatic Continent. The weather associated with the trough,conaistedof mostly overcast low and medium ClOUdS with rain and showers. About noon on Sunday, the llth of April, the stormy weather associated with the trough arrived in the Euiwetok area. 2. we rations. x-~ Day was scheduled”for 3hurs@, 15 April, and H Hour for 061711f. On Mon~, X-- minuc three ~s (12 @ril) rain was still falling, however, the main storm system had passed over Eniwetok and “ waa located ●ome hundred miles to the south. In the wake of the storm, considerable cloudiness at all levels and occasional showers continued to persist. It was, however, anticipated that the ~iuetok weather should 37 SECTION XII ...