National Weather Service Weather Forecast Office

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

000
CXUS51 KLWX 182034
CF6IAD

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

                                          STATION:   WASHINGTON DULLES DC
                                          MONTH:     JUNE
                                          YEAR:      2009
                                          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  77  48  63  -4   2   0 0.00  0.0    0  5.8 15 190   M    M   4        23 320
 2  91  63  77  10   0  12 0.00  0.0    0  5.4 17 200   M    M   7        21 200
 3  86  62  74   6   0   9 2.69  0.0    0  4.9 20  70   M    M   7 123    30 220
 4  62  58  60  -8   5   0 0.56  0.0    0  7.3 13  20   M    M  10 18     17 340
 5  64  61  63  -5   2   0 0.78  0.0    0  7.5 13 350   M    M  10 1      16 310
 6  78  60  69   0   0   4 0.00  0.0    0  5.0 12 320   M    M   7 1      15 320
 7  83  60  72   3   0   7 0.00  0.0    0  5.4 12 210   M    M   6 18     29 210
 8  89  65  77   8   0  12    T  0.0    0  2.5 10 240   M    M   6        24 350
 9  89  64  77   8   0  12 0.24  0.0    0  4.9 29 360   M    M   6 13     36 360
10  84  61  73   3   0   8 1.16  0.0    0  3.1 18 310   M    M   6 13     23 310
11  82  67  75   5   0  10    T  0.0    0  4.6 14 200   M    M   9 18     28 230
12  86  70  78   8   0  13    T  0.0    0  5.5 16 310   M    M   8        22 310
13  84  68  76   6   0  11 0.04  0.0    0  4.7 15 280   M    M   8        21 320
14  81  63  72   1   0   7 0.00  0.0    0  6.0 15 330   M    M   6        20 340
15  83  62  73   2   0   8 0.00  0.0    0  3.8 12 220   M    M   7        16 230
16  78  64  71   0   0   6 0.00  0.0    0  8.7 21 110   M    M   8 1      26  90
17  68  62  65  -6   0   0 0.27  0.0    0  9.5 17 140   M    M  10 1      25 130
18  86  66  76   4   0  11 0.41  0.0    0  8.3 16 310   M    M   8 138    32 300
19  84  61  73   1   0   8 0.00  0.0    0  3.6 13 350   M    M   6 18      9 340
20  89  71  80   8   0  15 0.46  0.0    0  7.5 26 290   M    M   7 138    35 290
21  80  69  75   3   0  10 0.00  0.0    0 11.0 23 330   M    M   6        30 340
22  85  67  76   3   0  11 0.00  0.0    0 10.0 20 310   M    M   5        25 330
23  86  67  77   4   0  12 0.00  0.0    0  6.9 15 350   M    M   5        18 330
24  88  62  75   2   0  10 0.00  0.0    0  6.8 18  10   M    M   4        33 340
25  89  63  76   3   0  11 0.00  0.0    0  3.6  9 280   M    M   6        14 290
26  91  69  80   7   0  15    T  0.0    0  3.4 17  20   M    M   7 138    23 270
27  85  66  76   2   0  11 0.00  0.0    0  7.9 20 320   M    M   3        30 330
28  78  63  71  -3   0   6    T  0.0    0  2.5  9 190   M    M   6 1      12 190
29  87  63  75   1   0  10 0.00  0.0    0  5.7 15 260   M    M   4 1      20 250
30  86  63  75   1   0  10 0.08  0.0    0  7.4 23 290   M    M   5 8      32 290
================================================================================
SM 2479 1908         9 259  6.69     0.0 179.2          M      197
================================================================================
AV 82.6 63.6                               6.0 FASTST   M    M   7    MAX(MPH)
                                 MISC ---->  # 29 360               # 36  360
================================================================================
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:    JUNE
                                          YEAR:     2009
                                          LATITUDE:   38 57 N
                                          LONGITUDE:  77 27 W

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

AVERAGE MONTHLY: 73.1   TOTAL FOR MONTH:   6.69    1 = FOG OR MIST
DPTR FM NORMAL:   2.2   DPTR FM NORMAL:    2.62    2 = FOG REDUCING VISIBILITY
HIGHEST:    91 ON 26, 2 GRTST 24HR  2.76 ON  3- 4      TO 1/4 MILE OR LESS
LOWEST:     48 ON  1                               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:  10
MAX 90 OR ABOVE:   2    0.10 INCH OR MORE:   8
MIN 32 OR BELOW:   0    0.50 INCH OR MORE:   4
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   2

[HDD (BASE 65) ]
TOTAL THIS MO.     9    CLEAR  (SCALE 0-3)   1
DPTR FM NORMAL   -12    PTCLDY (SCALE 4-7)  24
TOTAL FM JUL 1  4670    CLOUDY (SCALE 8-10)  5
DPTR FM NORMAL  -282

[CDD (BASE 65) ]
TOTAL THIS MO.   259
DPTR FM NORMAL    56    [PRESSURE DATA]
TOTAL FM JAN 1   393    HIGHEST SLP M ON M
DPTR FM NORMAL   115    LOWEST  SLP 29.49 ON 30

[REMARKS]
#FINAL-06-09#