WFO Monthly/Daily Climate Data Issued by NWS
000
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
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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
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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
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SM 1298 1059 828 0 4.08 9.2 306.9 M 276
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AV 41.9 34.2 9.9 FASTST M M 9 MAX(MPH)
MISC ----> 30 200 44 190
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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