OPNAV FORM 31 40-9 (REV 3-fi3) 
WBAN MB 
DEPARTMENT OF THE NAVY 
SURFACE WEATHER OBSERVATIONS 
(Ship Station) 
U.5.S, 
- 11-/./T 
5 . HALL £YA£"r6) 
STATION 
LATITUDE 
LONGITUDE 
DATE 
STATION 
PRESSURE 
(INS.) 
REL. 
TOTAL 
SKY 
COVER 
- 
CLOUDS AND OBSCURING 
PHENOM 
ENA 
TOTAL 
SEA 
WATER 
(1/10 °) 
SEA WAVES 
SWELL WAVES 
TIME 
'GMT) 
DRY 
BULB 
WET 
BULB 
HUMID¬ 
ITY 
LOWEST LAYER 
SECOND LAYER 
SUMMA- 
TION 
TOTAL 
THIRD LAYER 
SUMMA- 
TION 
TOTAL 
FOURTH LAYER 
OPAQUE 
SKY 
DIRECTION 
DIRECTION 
(%) 
AMT. 
TYPE 4 
DIR. 
HEIGHT 
AMT. 
TYPE 4 
DIR. 
HEIGHT 
AMT. 
TYPE 4 
DIR. 
HEIGHT 
AMT. 
TYPE 4 
DIR. 
HEIGHT 
COVER 
PERIOD 
HEIGHT 
PERIOD 
HEIGHT 
16 
17 
18 
19 
20 
21 
22 
23 
24 
25 
26 
27 
28 
29 
30 
31 
32 
33 
34 
35 
36 
37 
38 
39 
40 
00 
VjT'C 
dOo 
75 
91 
(O 
4 
ClL 
jT2.o 
o 
6 
o 
£ 
o 
6 
aoi, 
olctoH 
01 
02 
03 
04 
05 
0(5 
27 7 & 
81L 
— f 
/ko 
77 
/ 
(D 
¥ 
£u. 
2,0 
i 
25 
ZJ 
j 
w J 
u 
h 
o 
to 
U) 6 
07 o Lo*t 
07 
08 
09 
10 
11 
12 
7? fro 
'7 r ii 
7So 
7 
2 . 
£ ^ 
20 
Jl, 
Ci 
U 
7 
7 
L> 
y 
0 76{aQ j 
13 
14 
15 
16 
17 
18 
/. ' , o 
76 3 
7Si- 
A. 
u> 
L 
IS 
w i 
u 
Le 
7 
u 
O 
7i7> £ 
o7oi&o}> 
19 
20 
21 
22 
23 
SYNOPTIC OBSERVATIONS 
YQk^L, 
% 
LqLqLqGG 
Nddff 
1 
> 
> 
pp 
f9 or 
io; 
PPPTT 
DRY BULB 
("De*. 4 
lOths) 
WET 
BULB 
r/)e f . 4 
lOths) 
ICE 
NhC L h 
c M c H 
D»V g app 
8N s Ch,h, 
95pSpSpSp 
SEA TEMP. 
fDe*. 4 
lOths) 
AIR-SEA 
TEMP. DIFF. 
(Deg. & 
lOths) 
^T*"T g TjTj 
WAVES 
WAVES 
ON 
OFF 
STA. 
D,V t app 
DEW 
POINT 
(Deg. 4 
JOt a#; 
SEA 
SWELL 
SEA 
SWELL 
1 d w P w H w 
'd w d w P w H w 
d w d w 
P-Pw 
H W H W 
^ W 
PwPw 
H W H W 
91 
92 
93 
94 
95 
96 
97 
98 
99 
100 
102 
703 
104 
105 
m 
M 
m 
109 
no 
111 
112 
113 
114 
115 
116 
117 
\1oo7 
M 00 
i 
2-47 
£• 25*35 
Li *6 
'Lt'ciC 
C/-G 
- £• 3 
1 c 73Z 
G? 
Mm 
MsM 
23 7- 
03 
I J 
InnHHlinfnlHiiniUHHj 
Hov7 
7k L 06 
5c>?l5 
Ifat / 
.r/> 
•- ;/2>y 
2-7 ii 
tt* j 
i3ki>5 
27 g 
Cr (, 
LOiZ-i 
)o73Z 
i j 
o? 
j x r 
^w- WX.-V 
Z- 4 Z 
09 
‘ 
! ji 
.X... 
1.r 
|ii 
n oo 7 
?6k 12 
3-i- : 
V //. 2-2 
t . <-1, J 
3* 
J. > O 
-0 7 
■Cl ■ 7 
Illllll 
■ ' ' 
i-VtoS 
15 
v&m 
; : :f: | 
1 1 
II 007 
7W , 18 
,S <:'-/ 
Oil*. Lb 
. TlXs - l) 
V. £3 
2/74,7 
4 'P ^ 
c- «.v5 
- / e> 
-/ Q 
iu 7 $2- 
ft 7 \c& 
oZ 
i 1 
■ l ' | 
^7' -2,; 
21 
t ' 1 
3 1 
7 l . 
1 1 ” 
WINDS ARE OBTAINED AS FOLLOWS: 
TEMP, in shaded cols, are as checked below: 
ASURED 
Q ESTIMATED 
Web Bulb 
Qg1/10°C 
LL 
O 
O 
s 
□ 
u 
o 
□ 
WEATHER AND OBSTRUCTIONS TO VISION 
□ °F 
GG 
C^KDjre 
BERGS 
118 
119 
120 
121 
00 
03 
06 
09 
12 
15 
18 
21 
REMARKS, NOTES AND MISCELLANEOUS PHENOMENA 
Col. 122 
SUNRISE 
SUNSET 
± a-'em 
SUMMARY OF DAY (MIDNIGHT TO MIDNIGHT) 
MAXIMUM WIND 
LOWEST PRESSURE 
GALES (FORCE 8 OR HIGHER - 6 IN TROPICAL SEAS) 
TIME 
(GUT) 
DIRECTION 
8 . SPEED 
LAT. 
LONG. 
TIME 
(GMT) 
MILLIBARS 
WIND 
DIRECTION 
8 . SPEED 
LAT. 
LONG. 
BEGAN 
ENDED 
TIME 
(GMT) 
DIRECTION 4 
SPEED 
LAT. 
LONG. 
TIME 
(GMT) 
DIRECTION 4 
SPEED 
rrrr 
LONG. 
130 
131 
732 
133 
134 
135 
136 
137 
738 
139 
140 
747 
742 
143 
744 
745 
746 
TYPE 
BEGAN 
ENDED 
TIME 
LAT. 
LONG. 
TIME 
LAT. 
LONG. 
723 
724 
725 
726 
727 
728 
729 
NAVY-PEARL HARBOR 
