on STLARY OF WEATHER SITUATION FOR Feagve suce SweeAL. This sucrery presents the weather situation es evisted prior to, at, and just after BRAVO shot time, for the genersl arcs of the Larshall Islands, with specific reference to Bikini ast the SHRILP shot site. PrieSuot waaTHER. a. General Smnostic Situation (1) SURFASE = The surface chart was dominated by a high sres- sere cell located at apsroximately 34 degrees north 171 degrees east with a central pressure of apsroxizately 10% 135. & ercugt, oriented northeast - southwest la> just off the cozst of J:pac. Enis pressures in low latitudes lay just along the eguztor. Flow over the lershell Islands area wes the ezst northeast trade flow, with no marked regions of convergence or divergence. Ko. 1). (Chast During the preceding several days the high pressure cell had been moving slowly eastward, with a slight increase in the central pressures . (2) UPPER LEVEL CHARTS. From approximately 25,000 to $5,000 leet the flow pattern was dominated by a clockwise rotation cemeree neer 5 degrees north 175 degrees east. ‘This systec wes essextialy Wartical froz 30,000 to 55,000 Leet (Chart Kio. 4). Tae Sisw ar tase levels, under the influence of this doxinant s7ste= was “ros the west southwest. at 20,000 feet the doxinant clocxwise sctatsce o-.ob lay mich further to the ezst, with @ secondary center Locate? seu ~_ . ee