278
RAINFALL-COLLECTION RESULTS
1030
0930
1000
0300
0930
1900
1400
1250
1830
2300
0205
0130
1820
5/20
6/13
5/14
5/14
5/9
4/17
5/2
5/8
5/9
4/17
3/29
4/15
4/16
0315
0800
1900
1400
2130
0130
0335
0030
1130
0700
0920
1100
2000
To
Period
Peri
200
210
170
220
160
200
180
190
180
180
260
270
145 to 010
Degrees
26
13
15
11
Knots
Wind Velocity
Weighted Average
* No value available.
t Missed beginning of rainfall.
t Pier value used for ground average.
5/14
5/20
5/11
5/14
5/9
5/8
4/16
4/17
4/17
5/1
5/8
3/29
4/13
From
Rainfall
resulting values.
Max
450
520
910
397
385
150
720
525
1,740 2,540
760
500
805
540
410
150
240
65
375
110
295
235
320
235
1,970 2,900
Min
Ground
Average
»
Mean = 0.71624 0.402
0.968 40.111
0.389 + 0.072 f
0.397 + 0.246
0.641 20.223 t
0.83740.221
0.724 + 0.333
0.8174 0.354
0.501 4 0.536
0.6974 0.775
0.620 + 0.790
0.858 + 0.223
1.31024 0.280
0.547 + 0.223
Ground
Average
Pier
LST Average
Average
Non-Platform Array
m1/2.60 ft?
4704 10
4994 25
4834 50
*
1,418 + 242
5514 40
5052116
6344 60
2524154
9224131
345f
6914188
2424145 2,6844145
2,020 + 520
8134120
852 +143
6174 264
807+ 84
7594105
620 2 255
378+ 68
625+ 87
2634278
2084107
7444167
14524143
248+ 98
35524315
220+ 201
283+ 55
2964 55
2542 46
283+ 68
200+ 14
2624 53
2,3074919 4,220 + 381 3,752 + 358
Average
Platform Array (LST-611)
Rainfall catch
1.042 40.052
0.64220.110¢
0.607 + 0.057
0.781+0.111¢
1.0534 0.063
0.892+0.150
0.998 + 0.138
1.085 + 0.180
1.15420.594f
1.0562 0.937
0.997+0.185
1.6004 0.112
0.687 + 0.062
0.969 40.327
Average
Ground
LST Maximum
platform of the LST-611 (Station D, Figure A.1) while the
Collections were made In the trays of the OCC' s and AOC,' 8 on the standard
Simultaneously, collections were made in two rectanguship was berthed at the San Francisco Naval Shipyard, Hunters Point (No.24).
unobstructed area on the ground about 2,200 feet
flat
and in a
lar arrays of 12 identical trays located at the end of the adjacent pler
in the area (Nos. 815 and 511) and accompanying
buildings
two
of
tops
the
on
sly
northwest of the ship. Winds were measured continuou
made with a hand-held instrument on the pilot house of the ship.
rainfall measurements were madeon one (No. 815); a few readings were
into a container graduated in milliliters; all values for a given array
At regular intervals the contents of the trays were emptied directly
wind velocities were calculated by averaging the separate
average
were later averaged and standard deviations computed. Weightedof the parallel rainfall measurements, and averaging the
basis
the
on
intervals
different
wind measurements, assigning weights to the
TABLE B.31