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JOINT TASK FORCE SEVEN
APO 437
San Francisco, California
10 July 1956
APACHE
_t
7
ENIWETOK OBSERVED WEATHER FOR 9 JULY 1956
AT DETONATION TIME O606M
.
Sea Level Pressure
Free Air Surface Temperature
Wet Bulb Temperature
.,
Dew Point Temperature
Relative Humidity
Surface Wind
visibility
1010.5 mbs
80,3°F
76 .4°F
7L.9°F
& £
030° - 15 knots
Over 10 miles
CLOTS:
2/10 cumilus; bases estimated 1500 ft., tops estimated 25 ,000 feet to
sout” and nest,
2/10 c\ratoczmilus; bases at 2,000 ‘ft., tops estimated 4,000 feet.
alto. umlusLess chan 1/10.
Few
“10 c:rostvatus; estimated at 30,000 ft. (very thin and transparent),
Mure: cs co7vrai] « at 30,000 to 35,000 feet,
feGL
CUATHESUPLI.RY FROM AIRCRAFT:
“O10:
Scatvered cumilus buildups approximately 50 miles to east
teres at 20,000 to 25,000 ft,
fy 00=1.0,090 ft.
Scattere? stratocumlus tops estimated
Very light rain shower at Eriwetok,
O81. LO miles north and west of ground zero,
Lasse it 27,COO ft., tops unknown,
M25:
To east and southeast of ground zero,
GZ clear,
Stratus overcast
6/8 cumlus and strato-
cm Lir sith tops below 15,000 ft., occasional curmlus buildup to 25,000=
FO FOO Ps.
2
yom
oe
ETal® OF SEA:
cean Side: Wave height 4 feet, period 7 seconds, direction 070 degrees.
razoon Side: Wave height 1 foot.