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HEADQUARTERS
JOINT TASK FORCE SEVEN.
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APO 437
San Francisco, California
NAVAJO
13 July 1956
BIKINI OBSERVED WEATHER FOR 11 JULY 1956
AT DETONATION TIME 0556M
Sea Level Pressure
Free Air Surface Temperature
1010.2 mbs
81.297
Wet Bulb Temperature
76,29
Dew Point Temperature
7.0
Relative Humidity
Surface Wind
80.0%
090° = 8 knots
Visibility
10 miles
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CLOUDS :
2/10 cumlus, bases estimated at 1800 feet
6/10 cumlus, bases estimated at 2000 feet
7/10 cirrostratus, bases estimated at 30,000 feet (transparent)
AREA WEATHER SUMMARY FROM AIRGRAFT:
O600M - (Aircraft at 45,000 feet) Scattered to broken cloud layer based
at 30,000 feet, tops at 35,000 feet.
scatterod) with tops to 35,000 feet.
Bikini Atoll,
Few cumulus (widely
Could not see surface or
.
O615M - (Aircraft at 44,000 feet just above broken to overcast cirrus
cloud layer to the west of Bikini) Scattered cirrus clouds 50
miles south of Bikini.
Few scattered cirrus to north and east
of Bikini with approximately 2/10 small cumlus at low levels.
Few cumulus tops to 25,000 feet.
STATE OF SEA:
.
DNA
Ocean Side: Wave height 5 ft., period 5 seconds, direction 080 degrees.
Sea water temperature - 83.0.
Iagoon Side: Wave height less than 1 foot.