WFO Monthly/Daily Climate Data Issued by NWS
000
CXUS55 KSEW 030102
CF6SEA
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)
STATION: SEATTLE-TACOMA WA AIRPORT
MONTH: DECEMBER
YEAR: 2020
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 49 36 43 1 22 0 0.00 0.0 0 9.4 20 20 M M 3 1 25 10
2 60 38 49 7 16 0 0.00 0.0 0 8.3 16 110 M M 1 21 120
3 50 37 44 2 21 0 0.00 0.0 0 3.4 12 130 M M 7 1 14 130
4 54 36 45 3 20 0 0.00 0.0 0 4.1 12 20 M M 3 14 30
5 58 35 47 6 18 0 T 0.0 0 5.9 20 110 M M 4 12 23 100
6 54 43 49 8 16 0 0.03 0.0 0 9.2 15 190 M M 8 1 21 220
7 52 43 48 7 17 0 T 0.0 0 5.5 14 210 M M 9 1 21 210
8 52 48 50 9 15 0 0.73 0.0 0 8.0 17 350 M M 10 1 21 340
9 50 40 45 4 20 0 0.17 0.0 0 6.3 18 210 M M 9 1 23 220
10 44 37 41 0 24 0 0.04 0.0 0 7.8 17 210 M M 9 12 20 190
11 47 37 42 1 23 0 T 0.0 0 8.3 18 190 M M 7 1 23 190
12 45 31 38 -2 27 0 0.00 0.0 0 5.9 17 110 M M 6 12 22 110
13 45 39 42 2 23 0 0.20 0.0 0 8.9 18 120 M M 10 1 22 120
14 50 43 47 7 18 0 0.10 0.0 0 9.1 17 220 M M 9 1 21 230
15 48 42 45 5 20 0 0.42 0.0 0 12.4 22 170 M M 10 1 30 200
16 50 45 48 8 17 0 0.49 0.0 0 11.9 25 210 M M 10 1 34 210
17 50 44 47 7 18 0 0.07 0.0 0 13.9 25 180 M M 9 37 170
18 52 44 48 8 17 0 0.19 0.0 0 14.8 24 200 M M 10 1 32 180
19 53 46 50 10 15 0 0.45 0.0 0 11.9 26 200 M M 10 1 33 190
20 54 47 51 11 14 0 0.06 0.0 0 10.8 23 200 M M 9 1 32 190
21 59 34 47 7 18 0 1.64 0.5 0 8.9 25 200 M M 10 12 34 200
22 46 34 40 0 25 0 0.00 0.0 0 5.3 10 110 M M 5 1 14 120
23 43 31 37 -3 28 0 0.00 0.0 0 5.9 15 20 M M 4 12 17 30
24 44 28 36 -4 29 0 0.00 0.0 0 2.9 10 110 M M 6 12 13 120
25 49 35 42 2 23 0 0.34 0.0 0 7.8 20 100 M M 10 1 26 130
26 50 42 46 6 19 0 0.11 0.0 0 12.5 25 200 M M 8 18 31 190
27 49 39 44 4 21 0 0.13 0.0 0 6.7 14 140 M M 8 1 18 150
28 47 33 40 0 25 0 0.00 0.0 0 7.9 14 350 M M 3 12 18 70
29 41 34 38 -2 27 0 0.16 0.0 0 4.6 13 120 M M 10 1 15 150
30 50 40 45 4 20 0 0.97 0.0 0 12.0 26 120 M M 10 1 37 120
31 50 46 48 7 17 0 0.35 0.0 0 12.1 24 190 M M 10 1 31 190
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SM 1545 1207 633 0 6.65 0.5 262.4 M 237
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AV 49.8 38.9 8.5 FASTST M M 8 MAX(MPH)
MISC ----> # 26 200 # 37 170
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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: 2020
LATITUDE: 47 27 N
LONGITUDE: 122 18 W
[TEMPERATURE DATA] [PRECIPITATION DATA] SYMBOLS USED IN COLUMN 16
AVERAGE MONTHLY: 44.4 TOTAL FOR MONTH: 6.65 1 = FOG OR MIST
DPTR FM NORMAL: 3.8 DPTR FM NORMAL: 1.30 2 = FOG REDUCING VISIBILITY
HIGHEST: 60 ON 2 GRTST 24HR 1.68 ON 20-21 TO 1/4 MILE OR LESS
LOWEST: 28 ON 24 3 = THUNDER
SNOW, ICE PELLETS, HAIL 4 = ICE PELLETS
TOTAL MONTH: 0.5 INCH 5 = HAIL
GRTST 24HR 0.5 ON 21-21 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: 19
MAX 90 OR ABOVE: 0 0.10 INCH OR MORE: 15
MIN 32 OR BELOW: 3 0.50 INCH OR MORE: 3
MIN 0 OR BELOW: 0 1.00 INCH OR MORE: 1
[HDD (BASE 65) ]
TOTAL THIS MO. 633 CLEAR (SCALE 0-3) 4
DPTR FM NORMAL -122 PTCLDY (SCALE 4-7) 10
TOTAL FM JUL 1 1594 CLOUDY (SCALE 8-10) 17
DPTR FM NORMAL -346
[CDD (BASE 65) ]
TOTAL THIS MO. 0
DPTR FM NORMAL 0 [PRESSURE DATA]
TOTAL FM JAN 1 332 HIGHEST SLP 30.64 ON 1
DPTR FM NORMAL 143 LOWEST SLP 29.51 ON 21
[REMARKS]
#FINAL-12-20#
CORRECTED