National Weather Service Weather Forecast Office

• Home
• Site Map
• News
• Organization
• Search for: NWS All NOAA 

746
CXUS55 KSEW 010930
CF6SEA
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)

                                          STATION:   SEATTLE-TACOMA WA AIRPORT
                                          MONTH:     SEPTEMBER
                                          YEAR:      2020
                                          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  81  56  69   5   0   4 0.00  0.0    0  5.6 15 290   M    M   3        19  10
 2  81  57  69   5   0   4 0.00  0.0    0  6.8 17 350   M    M   2        20 340
 3  84  56  70   6   0   5 0.00  0.0    0  9.1 16 350   M    M   3        22  10
 4  83  59  71   7   0   6 0.00  0.0    0  7.7 13 190   M    M   4        16 240
 5  75  59  67   3   0   2 0.00  0.0    0  5.7 12 210   M    M   6        15 200
 6  81  56  69   5   0   4 0.00  0.0    0  7.8 14 350   M    M   2        18 360
 7  84  61  73  10   0   8 0.00  0.0    0   M   M   M   M    M   M 8       M  M
 8  83  63  73  10   0   8 0.00  0.0    0 14.8 20 110   M    M   2        29 110
 9  88  59  74  11   0   9 0.00  0.0    0 13.0 17  10   M    M   0         M  M
10  91  61  76  13   0  11 0.00  0.0    0  6.3 13 350   M    M   0 8       M  M
11  73  53  63   0   2   0 0.00  0.0    0  6.7 10 200   M    M   7 8       M  M
12  61  51  56  -6   9   0 0.00  0.0    0  4.0  7 170   M    M  10 18      M  M
13  64  50  57  -5   8   0 0.00  0.0    0  2.7  7 130   M    M  10 18      M  M
14  69  55  62   0   3   0 0.05  0.0    0  2.1  6 300   M    M  10 18      M  M
15  75  61  68   6   0   3 0.01  0.0    0  3.9  8 350   M    M   9 18      M  M
16  71  59  65   4   0   0 0.00  0.0    0  4.8 12  30   M    M  10 18      M  M
17  74  59  67   6   0   2 0.00  0.0    0  4.5 10 300   M    M   9 18      M  M
18  66  60  63   2   2   0 0.29  0.0    0  6.3 10 130   M    M   9 18      M  M
19  72  59  66   5   0   1 0.04  0.0    0  9.7 13 220   M    M  10 1       M  M
20  71  58  65   5   0   0 0.07  0.0    0  3.6  8 260   M    M   7 1       M  M
21  70  54  62   2   3   0 0.00  0.0    0  4.5 10 180   M    M   7 1      14 230
22  73  59  66   6   0   1 0.11  0.0    0  6.2 15 220   M    M   7 1      13 200
23  63  58  61   1   4   0 1.08  0.0    0 11.1 21 170   M    M  10 1      27 140
24  66  57  62   3   3   0 0.08  0.0    0 12.5 18 190   M    M   8        24 190
25  63  55  59   0   6   0 0.75  0.0    0 12.2 21 230   M    M   9 1      32 220
26  65  53  59   0   6   0    T  0.0    0  9.9 20 210   M    M   6        27 210
27  70  53  62   4   3   0 0.00  0.0    0  6.0 13 360   M    M   5 1      17  20
28  76  52  64   6   1   0 0.00  0.0    0  8.4 18  10   M    M   1        22  10
29  80  54  67   9   0   2 0.00  0.0    0  7.1 15  10   M    M   1        18 360
30  76  55  66   9   0   1 0.00  0.0    0  1.4  7 300   M    M   7         9 360
================================================================================
SM 2229 1702        50  71  2.48     0.0 204.4          M      174
================================================================================
AV 74.3 56.7                               7.0 FASTST   M    M   6    MAX(MPH)
                                 MISC ---->  # 21 170               # 32  220
================================================================================
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:     2020
                                          LATITUDE:   47 27 N
                                          LONGITUDE: 122 18 W

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

AVERAGE MONTHLY: 65.5   TOTAL FOR MONTH:   2.48    1 = FOG OR MIST
DPTR FM NORMAL:   4.2   DPTR FM NORMAL:    0.98    2 = FOG REDUCING VISIBILITY
HIGHEST:    91 ON 10    GRTST 24HR  1.08 ON 23-23      TO 1/4 MILE OR LESS
LOWEST:     50 ON 13                               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:   9
MAX 90 OR ABOVE:   1    0.10 INCH OR MORE:   4
MIN 32 OR BELOW:   0    0.50 INCH OR MORE:   2
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   1

[HDD (BASE 65) ]
TOTAL THIS MO.    50    CLEAR  (SCALE 0-3)   8
DPTR FM NORMAL   -82    PTCLDY (SCALE 4-7)  11
TOTAL FM JUL 1    85    CLOUDY (SCALE 8-10) 10
DPTR FM NORMAL  -132

[CDD (BASE 65) ]
TOTAL THIS MO.    71
DPTR FM NORMAL    50    [PRESSURE DATA]
TOTAL FM JAN 1   332    HIGHEST SLP M ON M
DPTR FM NORMAL   143    LOWEST  SLP 29.65 ON 25

[REMARKS]
#FINAL-09-20#