cn tHeDww:“PTERS «JOINT TASK FORCE SEVEN -— - . ye ENIWETOK OBSERVED WEATHER FOR 12 JUNE 1956 oa AT DETONATION TIME 0626M ~ - ee. 12 June 1956 " BLACKFOOT oS + aae nAee he eel ee Sea Level Pressure Free Air Surface Temperature 2 . Wet Bulb Temperature FA . 1012.5 mb Dew Point Temperature Relative Humidity _ 75 BOF 84.0% Surface Wind 075° 10-14 knots Visibility + vs 10 miles CLOUDS: Large cwmlus with shower activity 2/10 cumlus; estimated at 1500 ft. located 7% miles bearing 060° from Eniwetok. Top of this cumlus : . . . 81,19F 77 e2°F os measured by radar at 37,000 ft. 1/10 stratocumlus; base estimated at 4,500 ft. . , 2/10 or more altocumlus; estimated at 9000 ft. (opaque) 8/10 cirrostratus; estimated at 30,000 ft. (thin) GA10 transparent) AREA WaATEER SUMUUARY FROM AIRCRAFT REPORTS: aa "- 3/8-5/8 cumlus over FPniwetok area with bases at 1500 feet and tops generally at 5000-7000 feet. Cumlonimbus located south of GZ with top at 35,000 feet. Some cumlonimbus tops estiimted at 45,000 feet to northeast and north of GZ (no distance estimated), A scattered line of cumlo- nimbus about 30 miles east of GZ with tops estimated at 40,000 feet. &/10 altostratus; bases at 13,500 ft with tops at 15,000 feet. &/10-9/10 cirrostratus (very thin); based at 30,000 feet which appeared to be "breaking up" and dissipsting. Rain showers were observed to the east and west of GZ, ne distances estimated. STATE OF SEA: REST Ute AS COPY Ocean Side: Wave heights 5 feet, perioc 6 seccnds, direction 090°. Lagoon Side: Wave heights less than 1 foot. ENT.2TOK UFPER AIR SOUNDING (1117152) Pressure (Milvibars) 1004 1000 850 7L8 Height Temperature Dew Point 364 5,016 8,530 26.4 26,3 17.7 11.0 23.7 23.6 13.3 054° (Feet) (°c) (°C)