eae | degrees at LO knots - 45 thousand Leer 256 decrees at 38 knots = 50 thousand feet 80 degrees at 15 Imste = SO thcue sanz feet lightly and variable - 70 thousand feet EK dee grees at 25 Imots ~ % thousend feet 70 degrees at 29 cicts. (f° Hm4 Hrs: TZATHER: No change in 3-8 forecast. .=TS: “oe change. (2) The air particle trajectory chart (Chart Mo. 6) was used to brief cn the movement of the cloud after detonation for the several levels pcrirayed. 3. SITUATION iT H-HOUR a. , General Synoptic Situetion (1) SURFACE - The general synoptic patterns at this time ¢iflered froz those earlier only by the continued eastward movement cl te r : UFPE® LEVELS ~ The clockwise system had moved slightly cc tbe east and south, with the wincs at upper levels tending to tecane more westerly (Chart Ko. 10). At 20,000 feet the «mil clocxwise circulation west of Kwajalein had expanded (Chart No. 9). s¢ 15,92 feet the flow remained dosminated by the circr eddies which hat exte- ted at 280300Z (Chart No. 8). be -Por the observe? local conditions versus the fcrecast fer s.20 tise, see pa~ecranhs 5g, h and i below. a revised air particle traferiocy forecast was issued at Hl. hours, based on cate availcetie th ac. #9 hours (Chart No. 11). ‘The mejor chance, weich had not Dees. forecast, wes in the 22,025 foot tresectory. rs THe (2) ry C) high cressure cell (Chart No. 7).