to determine if any showers existed. The rad= reporte from shipsO aircraft, and the Mt. McKinley indicated that no showers were present in the immediatevicinity. At the 0M5 M briefing, the abo~e informationwae presented to the Task ~rce Commander. Thewlnds which had been forecast to be llght aad variable, were in excellentagreement with the latest observed winds. The cloud conditionswere also in good agreement with the forecaat condition. 3. ~ctual Weather The winds were reported as light and variable from the surface up to 25,000 feet with the usual anti-tradewinde above this level. The cloud pattern waa very much like the forecast with the exception that scattered middle clouds were not present as foreoaet. Tablee 5, 6, 7 show the weather observationsfor Peter -Ea# Day. 4. M!!4Wl a, Although the Peter X-Bay ~ exercisewae carried on ae a full dress rehearsal, rnlmulatlngan actual test ~, poestble to fire on thie ~. it would mot have been The cloud conditionswere ●ltable for the drone operations,but a significantemount of interferencewould have resulted in the scheduledphotography. The latter, however, wae expected on almost any firing ~ becauee clear skiee rarely prevail In the l(arshQls. The upper air winds would have prevented the oper~ tion becauae of the low velocitlee and variability In direction. A firing under this conditionwould ~ee and ehipe in the Task Force to hazardoue wind-’bome radioactivedebris. 25 SXCTIOE XII the -tire ~iwetok Atell area