its 110-KT yield completed the destruction of the camp facilitieq@ at Eneman and resulted in the temporary closure of the Bikini Island arbhorage. Preshot Preparation Aerial searches of Area Green and a sector 240 nmi (1,111 km), centered on a 30° bearing from Eneman, begbn on The series of preshot briefings continued until midnighk, when the decision was made to postpone the shot 24 hours to await more] favoriO0le weather. 3 5 April. de out : to 600 nmi (444 km) : By the morning of 6 April, the synoptic weather fogecast indicated favorable conditions for the following day, and the seqijence of the preshot precautions began again. At appproximately 1400 on 6 April, the forecast surface and a areas were announced as follows Surface Radex. radex (Reference 16, Tab M): True bearings from ground zero, 240° clockwise to 70°; radial distance 90 nmi (167 km) for H-hour to H+6, plus a circular radex area around ground zero of 15 nmi (27.8 km) radius. It was recommended that the air control DDE move to 240° and 90 nmi (167 km) from ground zero, and the task force ships move to a position southeast from ‘ground zero as soon as possible after the shot. Air Radex. For H+l, 10,000 feet (3.05 km) to 40,000 feet (12.19 km), 240° clockwise to 20° from ground zero for a maximum distance 20 nmi (37 km) and 20° clockwise to 859 from ground zero for a maximum distance of 30 nmi (56 km). For 40,000 feet (12.19 km) and up, 240° clockwise to 10° from ground zero for a maximum distance of 35 nmi (65 ‘i km), and 10° clockwise to 95° from ground zero for a max- imum distance of 45 nmi (83 km). For H+6, multiply distances by 6. Due to initial . cloud growth, supplement the 10,000-foot (3.05-km) radex for H+l with a sector bearing 85° true, clockwise to 240° true for a maximum distance of 5 nmi (9.3 km). Supplement the 40,000-foot (12.20=-km) radex for H+l with a sector bearing 95° true, clockwise to 240° true for a maximum The routine H-18 advisory was dispatched to CINCPAC announcing KOON schedule. The advisory indicated that no known transient shipg 271 [fhe were teShihheats distance of 15 nmi (27.8 km).