HEADQUARTERS JOINT TASK FORCE SEVEN APO 437 San Francisco, California 18 June 1956 OSAGE ENIWETOK OBSERVED WEATHER FOR 16 JUNE 1956 AT DETONATION TIME 131,M- - Sea Level Pressure Free Air Surface Temperature Wet Bulb Temperature Dew Point Temperature Relative Humidity Surface Wind Visibility . 1008.5 mb 85.9°F 79 OF 76 69 71.0% 140° - 11 knots 10 miles © CLOUDS: 3/10 cumulus; estimated bases at 1800 ft., tops 5-7,000 ft. Towering cumulus in all quadrants. . Less than 1/10 altostratus; estimated at 9,000 ft. (thin) 6/10 cirrostratus; based at 30,000 ft. (very thin and transparent) AREA WEATHER SUMMARY FROM AIRCRAFT: - 5/8 to 6/8 eumlus clouds within 60 miles (all directions) of Eniwetok. Cumilus based at 1600 ft. with 2/3 of tops at 5,000 ft.; remaining 1/3 tops to 10,000 ft. and an occasional top to 20,000 ft. Cirrostratus (5/8) based at 30,000 ft. RAD AR OBStRVATIONS : Towering cumulus all quadrants within 25 miles of station with tops measured at 10-12,000 ft. Towering cumilus between 25 and 75 miles of station with tops measured at 15-20,000 ft. STATE OF SEA: Ocean Side: Wave heights 3.5 ft., period 6 seconds, direction 100°. Lagoon Side: Less than one foot,