UO"LZ EVENT
daerd
CPERATowHARDTGK
1,
FOLLY was Jetonatad at G63CM, 21 “ay 1958,
a
thoty tositccned £,2C0 fast weat of Yvonne.
This was a barze
The first fix vas cbtainsd
at H+}4 inutes, vhon aireraft rioerts indicated that the cloud waa still
‘“sithin a few miles of ground cern and was starting to move tio the south=
“aut very slowly,
‘eaxizrim clond height was 15,000 fet.
The cloud
“seane stabiliced by M15 minutes with ths top at 12,000 faet ard the
bace at 7,500 fse%,
At d+30 mimites, tha cloud tep nad dascended to
vs&
9,000 Peet, vith ganeral movanan: “o the vsstereutiniest.
Soefore tha hour
vag uo, the tlovd hocseme too difsussd for redar or visual tracking...
20
The @2¥ barriar patrol s2perted on tine and shuttled betusen
Bruce and Levey Islends,
At H+55 miautss, he centacted tha scutheia
cdes of the sleud over Lovey at 5,069 fost ond reportad 500 ur/hr,
3,
A beliespter survey vas initiated at dc30% along the sast and
vorth islands of Entuetes.,
A asia reading of 5,990 mr/or vas snecdded
at 1090 Psat abova ground zero.
4.
20PU had predictad that ths islaads in the corthaast quadrant
would lie within ths 10C2 dose ai2a3 hovovar, the unoxpeetadly low
staoilised cloud hotght caussd alirest all the callout to rocein in tke
“rade wind Levela,
This eaused te “allo.t pattern to lie within the
vacials 230 jlegress to 320 dagrens,
Lith th:
oS
35 :altes,
iitn racial distance of cpproximately
extention of bronnt, oniy Janat, Leroy ond the islsrads
in Setwaen rtcaivad substantial fallout.
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