/—_—
Shot BRAVO was detonated at 0615M, 1 March 1954.
The first wec. ther
forecast made specifically for that test was issued at O455M, 27 February.
Five succeeding forecasts wero issued at scheduled intervals;
the last at 0207 M, 1 March, "H" minus six hours.
The forecast cloud
and weather conditions remained essentially unchanged through all six
forecasts.
The forecast of upper winds was changed as an increasing
westerly component became apparent in the levels between 10,000 and 50,000
foet.
The final forecast (nows releases to the contrary) verified
extrencly woll.?
Weather and cloud conditions fell within the linits
of observational error.
The upper winds approshed the limits of
—
-
accuracy imposed by the wind measuring oquipnent and random variations =—h
in the atmosphere.
«
The fact that there were no delays due to weather on this shot appears
to be very fortunate coinclucnce,
Though schcdulzd months ahead, tho
day selected fell within a four-day period which was the only period
with suitable upper winds between 28 January 1954 and 26 March 1954.
Coloncl
B. G. Holzman, weather officer on Operation S.iNDSTONE, had recommended
against use of the Mershall Islands for future tests because of wind
and cloud conditions in this arca.
The forecasting group returncdl to Eniwctok 3 March 1954, leaving
the Weather Central abosrd the ship in the hands of the acrographers
~~
mates under Stanley G. Snyder, ..Gl.
1.
2.
Ltr to Colonel Nicholas Chavasse fr Lt Colonel Slater, 20 Mar 54, and
reply, 14 April 54,
Ltr fr Colonel B, G, Holgman to Lt Colonol Slewor, 22 ipril 54.
a
Gil