WFO Monthly/Daily Climate Data
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000
CXUS55 KSEW 190930
CF6SEA
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)

                                          STATION:   SEATTLE-TACOMA WA AIRPORT
                                          MONTH:     SEPTEMBER
                                          YEAR:      2017
                                          LATITUDE:   47 27 N
                                          LONGITUDE: 122 18 W

  TEMPERATURE IN F:       :PCPN:    SNOW:  WIND      :SUNSHINE: SKY     :PK WND
================================================================================
1   2   3   4   5  6A  6B    7    8   9   10  11  12  13   14  15   16   17  18
                                     12Z  AVG MX 2MIN
DY MAX MIN AVG DEP HDD CDD  WTR  SNW DPTH SPD SPD DIR MIN PSBL S-S WX    SPD DR
================================================================================

 1  85  57  71   7   0   6 0.00  0.0    0  9.2 14  30   M    M   0        18 350
 2  90  62  76  12   0  11 0.00  0.0    0  7.4 15   4   M    M   0        19   4
 3  90  65  78  14   0  13 0.00  0.0    0  7.7 15   3   M    M   5        18   3
 4  88  65  77  13   0  12 0.00  0.0    0 10.2 20  10   M    M   5        23  20
 5  85  66  76  12   0  11 0.00  0.0    0  3.5 12 340   M    M  10 8      13 360
 6  81  63  72   8   0   7 0.00  0.0    0  5.8 14 210   M    M   8        17 210
 7  75  61  68   5   0   3 0.00  0.0    0  4.7 12 200   M    M   7        15 190
 8  71  60  66   3   0   1 0.00  0.0    0  5.4 12 200   M    M  10        14 210
 9  68  59  64   1   1   0    T  0.0    0  8.1 16 250   M    M   9        21 260
10  73  55  64   1   1   0 0.00  0.0    0  6.7 13 300   M    M   5        15 290
11  80  52  66   3   0   1 0.00  0.0    0  6.0 16  30   M    M   3        20  30
12  77  57  67   5   0   2 0.00  0.0    0  7.6 13 350   M    M   6        17 300
13  70  53  62   0   3   0 0.00  0.0    0  5.5 13 340   M    M   6        17 360
14  74  54  64   2   1   0 0.00  0.0    0  8.1 18 350   M    M   3        25 340
15  76  50  63   1   2   0 0.00  0.0    0  5.1 13 310   M    M   3        17 320
16  76  53  65   4   0   0 0.00  0.0    0  4.1  9 120   M    M   7 18     10 120
17  64  54  59  -2   6   0 0.15  0.0    0  8.4 18 230   M    M   8 18     24 230
18  62  50  56  -5   9   0 0.16  0.0    0 10.2 20 180   M    M   9 1      24 190
================================================================================
SM 1385 1036        23  67  0.31     0.0 123.7          M      104
================================================================================
AV 76.9 57.6                               6.9 FASTST   M    M   6    MAX(MPH)
                                 MISC ---->  # 20  10               # 25  340
================================================================================
NOTES:
# LAST OF SEVERAL OCCURRENCES

COLUMN 17 PEAK WIND IN M.P.H.

PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6) , PAGE 2

                                          STATION:  SEATTLE-TACOMA WA AIRPORT
                                          MONTH:    SEPTEMBER
                                          YEAR:     2017
                                          LATITUDE:   47 27 N
                                          LONGITUDE: 122 18 W

[TEMPERATURE DATA]      [PRECIPITATION DATA]       SYMBOLS USED IN COLUMN 16

AVERAGE MONTHLY: 67.3   TOTAL FOR MONTH:   0.31    1 = FOG OR MIST
DPTR FM NORMAL:   4.5   DPTR FM NORMAL:   -0.47    2 = FOG REDUCING VISIBILITY
HIGHEST:    90 ON  3, 2 GRTST 24HR  0.16 ON 18-18      TO 1/4 MILE OR LESS
LOWEST:     50 ON 18,15                            3 = THUNDER
                        SNOW, ICE PELLETS, HAIL    4 = ICE PELLETS
                        TOTAL MONTH:   0.0 INCH    5 = HAIL
                        GRTST 24HR     0.0         6 = FREEZING RAIN OR DRIZZLE
                        GRTST DEPTH:   0           7 = DUSTSTORM OR SANDSTORM:
                                                       VSBY 1/2 MILE OR LESS
                                                   8 = SMOKE OR HAZE
[NO. OF DAYS WITH]      [WEATHER - DAYS WITH]      9 = BLOWING SNOW
                                                   X = TORNADO
MAX 32 OR BELOW:   0    0.01 INCH OR MORE:   2
MAX 90 OR ABOVE:   2    0.10 INCH OR MORE:   2
MIN 32 OR BELOW:   0    0.50 INCH OR MORE:   0
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   0

[HDD (BASE 65) ]
TOTAL THIS MO.    23    CLEAR  (SCALE 0-3)   4
DPTR FM NORMAL   -33    PTCLDY (SCALE 4-7)   8
TOTAL FM JUL 1    30    CLOUDY (SCALE 8-10)  6
DPTR FM NORMAL  -111

[CDD (BASE 65) ]
TOTAL THIS MO.    67
DPTR FM NORMAL    49    [PRESSURE DATA]
TOTAL FM JAN 1   384    HIGHEST SLP M ON M
DPTR FM NORMAL   198    LOWEST  SLP 29.69 ON 18

[REMARKS]



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