WFO Monthly/Daily Climate Data
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CXUS55 KSEW 020445
CF6SEA
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)

                                          STATION:   SEATTLE-TACOMA WA AIRPORT
                                          MONTH:     DECEMBER
                                          YEAR:      2021
                                          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  56  53  55  11  10   0 0.00  0.0    0 15.7 24 210   M    M   9        32 210
 2  53  40  47   4  18   0 0.11  0.0    0  8.6 17  30   M    M   9 1      23  40
 3  43  35  39  -4  26   0 0.00  0.0    0  8.7 15  10   M    M   7        20  20
 4  42  37  40  -3  25   0 0.47  0.0    0  6.1 14  20   M    M   9 1      19 360
 5  42  33  38  -5  27   0    T    T    0  4.3 15  20   M    M   7 18     18  20
 6  45  37  41  -2  24   0 0.10  0.0    0  4.8 13 210   M    M  10 1      17 220
 7  49  43  46   4  19   0 0.07  0.0    0  5.6 16 190   M    M  10 12     23 200
 8  49  38  44   2  21   0 0.03  0.0    0 12.5 26 210   M    M   7 1      39 210
 9  43  36  40  -2  25   0 0.00  0.0    0 10.4 21 200   M    M   8        30 220
10  46  39  43   1  22   0 0.15  0.0    0 12.7 23 180   M    M  10        35 170
11  48  38  43   1  22   0 0.48  0.0    0 17.9 30 200   M    M   9 148    44 190
12  41  36  39  -3  26   0 0.17  0.0    0 11.4 25 210   M    M   8 1      33 210
13  42  36  39  -3  26   0 0.13  0.0    0  7.6 20 200   M    M   9 1      29 210
14  40  33  37  -5  28   0 0.14  0.0    0 10.4 20 210   M    M   8 1      26 230
15  42  36  39  -3  26   0 0.08  0.0    0  9.3 17 120   M    M  10        25 100
16  44  36  40  -2  25   0 0.05  0.0    0  4.8 13 240   M    M  10 1      16 250
17  44  35  40  -2  25   0 0.18  0.0    0  7.6 14 120   M    M   9 1      27  70
18  50  36  43   1  22   0    M  0.0    0 13.0 25 200   M    M  10 1      37 230
19  45  36  41  -1  24   0    T  0.0    0  8.5 16  10   M    M   8 1      22  10
20  37  33  35  -7  30   0 0.26    T    0  9.3 17  20   M    M  10 1      21  20
21  41  34  38  -4  27   0 0.19  0.0    0  7.0 14  20   M    M  10 1      17 150
22  50  41  46   4  19   0 0.43  0.0    0 11.8 22 180   M    M  10 1      29 180
23  46  38  42   0  23   0 0.16  0.0    0 16.5 26 220   M    M   9 1      39 220
24  43  36  40  -2  25   0 0.33  0.0    0 12.7 29 200   M    M  10 1      41 200
25  37  31  34  -8  31   0 0.13    T    0 12.7 25 210   M    M   9 1      39 210
26  31  20  26 -16  39   0 0.26  3.4    0 14.1 26 360   M    M  10 128    32 360
27  27  17  22 -20  43   0 0.03  0.5    3  9.6 24  20   M    M   8 1      31  20
28  28  24  26 -16  39   0    M  1.0    2  8.4 16  10   M    M  10 1      20  10
29  29  22  26 -16  39   0 0.13  0.9    2  8.6 17  10   M    M   7 1      23  20
30  34  28  31 -11  34   0    M  3.4    3  9.6 22 360   M    M  10 1      30  10
31  31  22  27 -15  38   0    T    T    4  6.7 20  10   M    M   6        24  20
================================================================================
SM 1298 1059       828   0  4.08  9.2    306.9          M      276
================================================================================
AV 41.9 34.2                               9.9 FASTST   M    M   9    MAX(MPH)
                                 MISC ---->    30 200                 44 190
================================================================================
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:     DECEMBER
                                          YEAR:      2021
                                          LATITUDE:   47 27 N
                                          LONGITUDE: 122 18 W

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

AVERAGE MONTHLY: 38.0   TOTAL FOR MONTH:   4.08    1 = FOG OR MIST
DPTR FM NORMAL:  -4.0   DPTR FM NORMAL:   -1.64    2 = FOG REDUCING VISIBILITY
HIGHEST:    56 ON  1    GRTST 24HR  0.59 ON 10-11      TO 1/4 MILE OR LESS
LOWEST:     17 ON 27                               3 = THUNDER
                        SNOW, ICE PELLETS, HAIL    4 = ICE PELLETS
                        TOTAL MONTH:   9.2 INCHES  5 = HAIL
                        GRTST 24HR   3.4 ON 26-26  6 = FREEZING RAIN OR DRIZZLE
                        GRTST DEPTH:   4 ON 31     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:   5    0.01 INCH OR MORE:  22
MAX 90 OR ABOVE:   0    0.10 INCH OR MORE:  17
MIN 32 OR BELOW:   7    0.50 INCH OR MORE:   0
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   0

[HDD (BASE 65) ]
TOTAL THIS MO.   828    CLEAR  (SCALE 0-3)   0
DPTR FM NORMAL   117    PTCLDY (SCALE 4-7)   8
TOTAL FM JUL 1  1887    CLOUDY (SCALE 8-10) 23
DPTR FM NORMAL   117

[CDD (BASE 65) ]
TOTAL THIS MO.     0
DPTR FM NORMAL     0    [PRESSURE DATA]
TOTAL FM JAN 1   377    HIGHEST SLP 30.60 ON  5
DPTR FM NORMAL   114    LOWEST  SLP 29.27 ON 24

[REMARKS]
#FINAL-12-21#
CORRECTED


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