PRP
1 wareh 1954
Command ariefing, 1100, 28 Februsry 1954
detection ates tettattie:timieate nah inand
SUBJECT:
OY
VEMORANDU FCR RECORD:
hie este
Members present: Gen Clarkson, Gen HeGinley, pr. Graves,
Adm Bruton, Col Cowart, Lt col Harbour (in lieu of C™% 7.4)
Capt Kaynerd, Lt Col Bonnot, and Lt Col House.
In general, tae hodograph gave a forecast surface radex
ne
1.
jerereye
in ths low levels ( zero to 15,000 reeset) at about 50 siles in 6
hours, genzrally orientated to the west south west in asprcrisatee
ly a 30 dégree sector.
In the high leveis, the radex gave a 6
hour pattern centered on approximately 65 desrees in a carrow
cone approximately 20 degrees wide.
2.
The 72-hour cloud trajectories indicated all leveis ia
a narrow band generally 65 degrees true from ground zero except
tha 10,000 foot level moving generally east through corth to
west and a 60,000 foot level moving southwest and then west.
RadSafe outlooks ware given es follows:
a.
Bikini atoll:
Favorable.
b.
Eniwetok atoll:
Ce.
Ujelang atoll:
ad.
Native atolls in southeast cuadrant:
Pan wy
3.
Favorable.
Very favorable.
Very fevcratie.
e€. Control DDE: It was reccommended toat the Csntroiui Tis
be moved frum @ position 90 miles Vest or Ground Zero to a pcsition 230 degrees Trus, 90 ciles fro= Sround Zsro.
Tne plot o> the Yass ans aT?
.
courses fran about E minus 24 hours to = ;lus 2 bours wes 22 cele.
in general, from about 9 minus 5 to ebdout = minus 3 Sous tx0
ATPs and YAGs courses rug approximsetely 25 to 20 siles frss ts
armed device and the £tr departs from a positica ca tae ¢-5e cl tse
low eltitude radex at ebout E minus 1s occurs toa pos.tice approx
Tae acvesests
‘mately 35 miles south of ground zero 6% Z pius 2.
of the YAGS and ATF were presentec fcr whatever consid.re+ica
was necessary in view of their close proxicity tO tie geT.c@ Boe
the radex.
a
yr
ATF and the YaGS:
wer
f.