cittuce ant leon Sisant intensities xt 0 givmn tine amvosisted wth:

urea

endepeed shear, Pow this reasen, 18 we required their -

. Obecyvations and forecaste immediately befsre shot tine and,
throaghen® shot day be continously conaidered in theiy relation with,joe
forecast. conditions for the first twenty-four houre after the sict.
shot

up-aiptE
5.
arn The following vere presasted xt the pre=
ings:

.

a> Weather
15,000 feet and winds of a southerly component.

by f!
i Erg

Weather conditions during the five days pri
indicated a favorable trend fer BRAVO day with easterly

of

of 18

i

presented at H-6 hours for the subsequent 24 hear
show time) was satisfactory, The 24 hour perted te

sho tine wae predicted ta give an unfaverable trend

after
after
winds

1s

were forecast for the 10,000 to 20,000 foot levels

<

be RedSace

if

—

(1) Resultant wind dlegrene indluting Lateut

a winds

and forecast, winds for H Hour and the 72 hour cloud
ee,vxich
gave a fall-out pattern in a narrow sector to the east northeastcnd ao

vide (10°) sector to the south with very slew resultant windie:
(2) Surface radex, H to H plue 6 hours.(3) Outlecks fors
(a) BIXTNI: Unfavorable;

Paverables

Paverable, and the native populated atells in
|e euadren Pad

ground sere favorable, since Peaultant winds Le the direction
of these
involved, considered.tee slow to nove significans fall-out. te the atolls
dnyvel

7

(b)
‘out at least 50 miles.

Force
Task

Favorahl
mom
*

provided sie

oe moved

(ec) Air routes through WAKE and KWAJALEIN: favorable.

(d) Surface routing inside 500 miles considered in its

relation to ali mow: transient shipping: favorable.

ee Selentitic
(1) High altitude sampling operations ~ favorable,
(2)

Light transmission for acdentific experiments - favorable,

Kel7.

-

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