OPNAV FORM 31 40-9 (REV- 3-63) 
SUR 
W9AN 1 10 
DEPARTMENT OF THE NAVY 
= ACE WEATHER OBSERVATIONS / 
(Ship Station) V/ 
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STATION 
LATITUDE 
LONGITUDE 
DATE 
a pan on 
Y IME 
(GMT) 
STATION 
PRESSURE 
(INS.) 
DRY 
BULB 
WET 
BULB 
REL. 
HUMID¬ 
ITY 
(%) 
TOTAL 
SKY 
COVER 
CLOUDS AND OBSCURING PHENOMENA 
TOTAL 
OPAQUE 
SKY 
COVER 
SEA 
WATER 
(1/10°) 
SEA WAVES 
DIRECTION 
PERIOD 
HEIGHT 
SWELL WAVES 
DIRECTION 
PERIOD 
HEIGHT 
LOWEST LAYER 
SECOND LAYER 
SUMMA- 
TION 
TOTAL 
THIRD LAYER 
SUMMA- 
TION 
TOTAL 
FOURTH LAYER 
AMT. 
TYPE & 
DIR. 
HEIGHT 
AMT. 
TYPE & 
DIR. 
HEIGHT 
AMT. 
TYPE & 
DIR. 
HEIGHT 
AMT. 
TYPE & 
DIR. 
HEIGHT 
16 
77 
18 
19 
20 
21 
22 
23 
24 
25 
26 
27 
28 
29 
30 
31 
32 
33 
34 
35 
36 
37 
38 
39 
40 
00 
-- - 
i 
01 
— 
02 
03 
04 
05 
06 
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07 
08 
09 
10 
11 
12 
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w 1 
13 
14 
, 
15 
16 
17 
18 
V, - jt-f 
19 
20 
21 
22 
23 
SYNOPTIC OBSERVATIONS 
NAVY-PEARL HARBOR 
