Although the winds,
in general, were similar to those of the previous bursts, the
westerly winds just below the tropopause attained higher speeds
than had occurred during the previous tests, 55 to 65 knots at
40,000 feet.
Trajectories are shown in Figure 2.6. Debris
reached Mextcc City on May U, and falloutwas widespread over
the western plains states and the Rockies by May 9. Fallows from
this burst continued over the westernRalf of the United States —
(with the exception of the Pacific Coast) in significant amounts
for a period of more than 8s week. The fallout from Yankee in this
Tegion exceeced, by almost an order of magnitwie, the fallout from
any of the other tests of the series. The westward moving debris
appeared to proceed faster than indicated by the low-level trades,
reaching Koror by May 6 and Singapore by May 9.
Again, it is very
possible that high-level easterlies carried the debris, since the
25-30 knot winds required are somewhat faster than expected in
the trades of the Western Pacific.
2.6
NECTAR
The last test of the series, Nectar, was the only burst
detonated from Eniwetok.,
Tha
It occurred at 1820 GCT, May 13, 195h,
waarttine
ata d
were s pT
te
ett ~The
easterly winds exten.ed GO cuy,we ievetb, with Ligat westerlies abov..
to the base of the stratosphere. The trajectories from this burst
(Figure 2.7) began with a slightly greater component towards the
north than for the previous bursts.
Since Yankee and hectar were separated oy only nine days, it
is virtually impossible to distinguish between debris from the two
bursts,
An attempt to separate the two sources of debris was made
for the first week following Nactar, but. was not attempted beyond
this time.
UDafly fallout mans for the remainder of the month,
May 22-31, are given with all data extrapolated to 100 days after
Nectar because of the arbitrary system of burst assignment used.
However, it is likely that the major portion of the fallout revorted
on these days originated from Yankee. To convert the reported
activity to 100 days after Yankee, assuming the debris originating
from Yankee, the values given on the maps should be increased by
shout 30-Lok
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