YOKE DAY

Location of Center of Rising AomicMOlg
from

H-hour until H-hour aplus 12.0 Minutes
yououad

w

7.0

RE

55

MIMVTES THAT WIND aCTED GN CLOUD AT EACR

5,000 FOOT LEVEL

The greph of the azimuth angles of
the primary cloud maces shows that the atomic

rae)

METHOD OF COMPUTING LOCATION
OF CENTER OF ATOMIQ CLOUD TOP AT Tis IT
QEACHED SIGHEST ALTITUDE

cloud moved very little borisomtelly during

the firet four aiestes. Because of the
Folatively light winds st lower levele an4
the repid ries of the atomie sloud, wind
date below 20,000 feet ave not bess oonsidered im these computations, The tine
istervels gives below have been determined

Ag the stomie elond wee seted upon

by the upper winds during the 12.0 ainetes
that 1: wee rising, the top of the cloud

by @lviding the curve shows op the page

Sa Alsplaced o ooagideruble distanes fros
the test site by the tine that it reeched
mariqve sititude. Wind soundiage were act
obtained at H-hour, Therefore 18 te
Beceasary te wee Sotimeted wind directions
eng velocities besed on winds at

|

G400 and

iodo boure, Theae eatimated wind date give
6 movensat of 6.8 miles in @ direction fren

207°, This imereace in distanse between the

@loed and ths theodelite observation stations
Mast be coseidered 1f the tree altitude af
tee cloud ie to be ecustdered:

ere dirested ln socordance with the spper
OQ

wind at the 5,000 foot level in question

ted mhich are propertions] ia leagth to the

times that the cloud required to pass through

phe altitads iatervel.

The redii of the cireles sre is nentical
miles, eané the individual rectors ere idestified by figures signifying thousends of
fess.

Y
ul
an

eulated by joining together veetors whieh

™

Tae position of the elowd bas been cal-

n°

270*

Rate o
of A
¢
fata 5,000
foot segments, 2,500 feet om either aide
ef the altitude ia Question, and reading
eff the intersections of the plotted eurre
with the tine orfinstes. These tine
intervela are sogaidered to be the number

Of minutes thet the upper winds acted an

She eloed of each 5,000 feos level.

sk,

Miamten

20,000

{2.56 - 1.08) 5 0.48

25,000

(2.28 = 1.56) & 0.70

30,000

(3.28 ~ 2.26) » 1.02

34,000

(4.68 = 3.28) & bao

0,00

(5.99 = 4.68) o 1.

45,000

{7.28 = 3.99) = 1.29

$0,000

(9.23 = 7.28) « 1.95

33,060

(12.00- 9.23) = 2.77

Levorss OF VECTOMS DN MAITICAL MILES

Altitote
=«Boure Epoty Bautios] Biles
0,000 6.48/80 5g 105
25,000

on/io x

30,000

102/60 zg

Je

33,000

4.40/60

an

40,000

le

1.31/60

De

4.29/60

Me

4.95/60

47a

2.77/60

Me

180°
m-m

Length

of calculated vector — 6.8n. miles,
-?8-

direction

from

207°

"

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