WFO Monthly/Daily Climate Data
Issued by NWS Sterling, VA

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CXUS51 KLWX 030244
CF6IAD
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)

                                          STATION:   WASHINGTON DULLES DC
                                          MONTH:     APRIL
                                          YEAR:      2020
                                          LATITUDE:   38 57 N
                                          LONGITUDE:  77 27 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  40  48  -2  17   0    T  0.0    0  8.6 18 350   M    M   9        22  20
 2  62  37  50   0  15   0 0.00  0.0    0 15.9 32 310   M    M   2        42 300
 3  66  45  56   6   9   0 0.00  0.0    0 17.6 32 310   M    M   2        42 320
 4  62  43  53   2  12   0 0.00  0.0    0  6.0 14 350   M    M   6        17 360
 5  71  42  57   6   8   0    T  0.0    0  3.5 12 190   M    M   7        15 210
 6  70  45  58   7   7   0    T  0.0    0  4.6 15 350   M    M   5        20  10
 7  73  47  60   8   5   0 0.30  0.0    0  5.8 21 330   M    M   7 13     30 330
 8  78  51  65  13   0   0 0.06  0.0    0  7.4 24 310   M    M   5        32 310
 9  69  45  57   5   8   0 0.12  0.0    0 14.4 39 290   M    M   6 3      51 290
10  51  34  43 -10  22   0 0.00  0.0    0 18.2 39 300   M    M   5        50 290
11  63  34  49  -4  16   0 0.00  0.0    0  7.5 22 290   M    M   4        30 290
12  72  36  54   1  11   0 0.24  0.0    0  7.2 23 190   M    M   7 1      31 180
13  77  50  64  10   1   0 1.79  0.0    0 14.1 35 290   M    M   7 13     41 290
14  57  38  48  -6  17   0 0.23  0.0    0  8.5 25 330   M    M   8 1      31 310
15  53  37  45  -9  20   0 0.05    T    0  7.0 20 340   M    M   5 1      26 330
16  52  33  43 -12  22   0 0.00  0.0    0 10.7 23 290   M    M   4        32 310
17  59  29  44 -11  21   0    T  0.0    0  5.9 18 190   M    M   8        24 200
18  54  33  44 -11  21   0 0.06  0.0    0  9.1 29 320   M    M   6 1      37 320
19  65  30  48  -8  17   0 0.00  0.0    0  6.4 20 200   M    M   5        25 200
20  63  48  56   0   9   0 0.00  0.0    0  5.7 13 360   M    M   8        18 360
21  68  43  56   0   9   0 0.01  0.0    0 16.1 33 290   M    M   5        44 290
22  62  37  50  -6  15   0 0.00  0.0    0 11.3 28 310   M    M   2        37 300
23  58  41  50  -7  15   0 0.48  0.0    0  5.7 14 150   M    M  10 1      18 160
24  58  46  52  -5  13   0 0.21  0.0    0  6.7 15 350   M    M  10 1      19 350
25  62  39  51  -6  14   0 0.09  0.0    0  6.2 15 150   M    M   7 1      19 160
26  56  47  52  -6  13   0 0.38  0.0    0  5.8 13 360   M    M  10 1      17  10
27  59  41  50  -8  15   0 0.06  0.0    0 11.4 24 300   M    M   8 1      32 310
28  53  39  46 -12  19   0 0.10  0.0    0  2.6 10 210   M    M   9 1      13 210
29  75  40  58   0   7   0    T  0.0    0  8.1 22 150   M    M   7 1      32 150
30  67  54  61   2   4   0 1.38  0.0    0  9.1 21 130   M    M  10 1      30 140
================================================================================
SM 1891 1224       382   0  5.56    T    267.1          M      194
================================================================================
AV 63.0 40.8                               8.9 FASTST   M    M   6    MAX(MPH)
                                 MISC ---->  # 39 290                 51 290
================================================================================
NOTES:
# LAST OF SEVERAL OCCURRENCES

COLUMN 17 PEAK WIND IN M.P.H.

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

                                          STATION:   WASHINGTON DULLES DC
                                          MONTH:     APRIL
                                          YEAR:      2020
                                          LATITUDE:   38 57 N
                                          LONGITUDE:  77 27 W

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

AVERAGE MONTHLY: 51.9   TOTAL FOR MONTH:   5.56    1 = FOG OR MIST
DPTR FM NORMAL:  -2.5   DPTR FM NORMAL:    2.09    2 = FOG REDUCING VISIBILITY
HIGHEST:    78 ON  8    GRTST 24HR  2.03 ON 12-13      TO 1/4 MILE OR LESS
LOWEST:     29 ON 17                               3 = THUNDER
                        SNOW, ICE PELLETS, HAIL    4 = ICE PELLETS
                        TOTAL MONTH:  T            5 = HAIL
                        GRTST 24HR   T   ON 15-15  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:  16
MAX 90 OR ABOVE:   0    0.10 INCH OR MORE:  10
MIN 32 OR BELOW:   2    0.50 INCH OR MORE:   2
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   2

[HDD (BASE 65) ]
TOTAL THIS MO.   382    CLEAR  (SCALE 0-3)   3
DPTR FM NORMAL    47    PTCLDY (SCALE 4-7)  21
TOTAL FM JUL 1  3974    CLOUDY (SCALE 8-10)  6
DPTR FM NORMAL  -600

[CDD (BASE 65) ]
TOTAL THIS MO.     0
DPTR FM NORMAL   -17    [PRESSURE DATA]
TOTAL FM JAN 1     3    HIGHEST SLP 30.35 ON 17
DPTR FM NORMAL   -17    LOWEST  SLP 29.31 ON  9

[REMARKS]
#FINAL-04-20#


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