‘ HEAD UARTERS JOINT TASK FORCE SEVSN APO 437 San Francisco, California 21 May 1956 | BIKINI OBSSRVED WEATHCR FOR 21 MAY 1956 CHEROKEE. DETONATION TOE 0551 _ Sea Level Fressure Temperature 1009.6 mb 815Fr Relative Humidity 76% Dew Point 73°F Surface ‘ind Visibility CLOUDS: 140°, 10 kts Yore than 10 miles 2/10 cumulus, beses 1600 ft, tops 2500 ft; 2/10 cirrus at 38,000 ft. WEATHER: Vers widely scattered showers, There were three shovers in the vicirity of the atoll at snot time: one very light shower just to the sunth of TARL; one light shower, which was dissipating, near BRAVO; and a light shower east of NAN, STATE OF SEA: Bikini Lagoon: at anchorage, 2.5 ft. near Nam. /verage of hishest 1/3 of waves; 3.0 ft. The predominant direction of waves at anchorage was 135°; near Nasu, 100°, Open Sea: Average of highest 1/3 of waves; 4,0 ft. The predominant direction of waves in open sea was 100°, BIKINI SOUIDING Fressure Keight Villibars 1009 1000 916 &50 835 Feet . Sfe 320 4,930 &23 772 716 710 700 500 453 Temperature Dew Point 27.2 26.5 18.5 15.5 15.2 22,2 22.5 17.5 10.8 09.5 10.5 06.2 07.2 07,2 07.6 10.2 02.2 03.5 03.5 -10.2 -10.2 -1L.5 _ 13.5 10,230 19,080 E COPY L B A L I A V A T S BE °c 13.5