eran Nn tea re HEADQUARTERS JOINT TASK FORCE SEVEN APO 437 San Francisco, California | - . {— 442 June 1956 FLATHEAD BIKINI OBSERVED WEATHER FOR 12 JUNE 1956 AT DETONATION TIME 0626M Sea Level Pressure , . Free Air Surface Tenperature Dew Point Temperature 1012.9 mb 82,0°F 76,0 Relative Humidity 82,0% Surface Wind 050° at 10 knots Visibility 10 miles o1Us: 4/10 stratocumlus and cumilus; bases estinated at 2000 ft. 10/10 cirrestratus; bases estimated at 30,000 feet. WeeTeg: No shower activity reported. BIKINI UPPIR AIR SOUNDING (1119002) Temperature Dew Point 110 380 1,903 5,020 27.8 26.8 22.2 17.2 24.5 23.5 19.5 11.8 9,022 10,380 5,723 12,705 1,042 16,327 17,126 17,995 19,250 24,840 2735592 31,670 10.8 08.5 06.8 05.2 02.8 02.8 04.8 04.2 08.2 -19.2 “25.42 32.3 RP ry BEST ByGS ba oe wr . Ms 7A F a . (°c) G, sf Pea (°C) er: 735 700 666 640 611 560 543 925 500 400 356 300 Height (Feet) 4 1011 1000 947 850 -. boos Pressure (Millibars) 702,2 -02.4 ~02.5 08.8 06.2 -10.2 -20.5 -19,2 -1L.8 30.5 3705 M