PLACE: DATE ENIWETOK-BIKINI TIME fms BI-HOURLY OBSERVATIONS, MSTS - T-LST 618, AUGUST 18 - SEPTEMBER 1, 1957 POSITION/COURSE Ng DDFF wX P TT TT, TT, 8/20 LOG ENTRIES: 0200-0400 Position as before. 0400-0600 Position as before. 0600-0800 Position as before. AMT. 8ths No change in weather for past 4 hours. Visibility excellent. Low Sw swell. Visibility excellent. Low SW swell. Cy TYPE HT. OO ft. Cy Cy TABLE 18 (Continued) DD WAVES PERIOD HT. ft. Barometer dropping slowly. 1400-1600 (1600 Position: 11°2 6'™N-Long 164°461E) M935 Cumulus clouds al] around horizon. Strands of cirrus overhead. Barometer rising. Visibility unlimited. 1000-1200 En route Bikini to Parry Is#: Lat 11°27.5'N-Long 165°25'E. No change in weather. Visibility unlimited. 1200-1400 (1400 Position: 11°26'N-Long 165°05'E) Sky mostly clear with towering cumulus clouds around horizon. northeasterly Thin strands of cirrus overhead. Bright sunshine. Visibility unlimited. and sea. Barometer d ropping slightly in past 2 hours. 0800-1000 Position as before. No change in weather for past 4 hours. 11°2 7*N-Long 164°26'E) Visibility excellent. Low short easterly swell. Long low Nw swell. 1]°2 7!N-Long 164°07'E) Visibility excellent. Low short easterly swell. Long low NW swell. 11°2 5'N-Long 163°50.0tE) Clouds forming. Barometer jumped -10 in past 2 hours. unlimited. 2210: rain squalls on radar scope &315°T 24.0 mi. off port bow. 2253: lightning observed in NE. 2200-2400 (2400 Position: 11°24.0'N-Long 163°32tE) Rain squalls on radar scope. Visibility unlimited. north and northeast. Barometer steady. 1600-1800 (180O Position: 1800-2000 (2000 Position: 2000-2200 (2200 Position: 2 8/21 0200 04,00 1000 1200 1400 11°25'N 162°59tE 11°26'N 162°4,31E 11°25tN 162° 25'E Eniwetok Eniwetok Eniwetok 1800 2000 2200 24,00 Eniwetok Eniwetok Eniwetok Eniwetok 0600 0800 1600 a “ 11°251N 163°17'E LOG ENTRIES: Eniwetok 270 4 18-12 18 =88 81 78 85 4 2 20 265 8 19-10 18 86 80 77 85 7 2 20 258 4 21-05 BO 88h 82 78 4 2 20 VAR 7 6 5 > 21-05 17-08 18-10 19-12 03 O01 Ol 16 &6 86 980 «76 83 83 83 8h 78 77 77 78 7 5 4 4 7 i 7 7 20 20 20 20 1 19-08 Ol 0000-0200 En route Bikini to Parry Ise% 82 N N N 83 N 78 (0200 Position: 0 R 0 R O Q R R EP E P EP 1 E P ORT S 2 OR T S OR OR T T 8S § 20 Lat 11°25'N-Long 163°17'E). -- 1 18 3 2 18 3 2 21 - 1 -~ --- 1 1 1 21 17 i8 19 - 1 1 1 i -- -- 19 - 1 0020: wind shifted from ESE to south. Moderate southerly wind 10 to 12 knots. Numerous small rain squalls noted on radar. Flashes of lightning observed to NW. Unlimited visibility. Barometer dropped .04 in past 2 hours. Light southerly sea and low Southeasterly swell. 0200-0400 (0400 Position: Lat 11°25tN-Long 162°59'E) = 7 Numerous light rain squalls. waned TS ahs Good visibility except in squalls. eeasthernetarlyv wind and sea. es Fee eens SerTees Oe ti mls semen, oe eRneethie ; B e