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000
CXUS51 KLWX 010620
CF6IAD
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)

                                          STATION:   WASHINGTON DULLES DC
                                          MONTH:     OCTOBER
                                          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  67  41  54  -7  11   0 0.00  0.0    0  3.4 12 290   M    M   4 1      16 290
 2  71  52  62   1   3   0    T  0.0    0  6.8 18 190   M    M   9        25 200
 3  78  50  64   4   1   0 0.00  0.0    0  3.2 17 210   M    M   4        22  30
 4  71  44  58  -2   7   0 0.00  0.0    0  5.1 18 280   M    M   4        24 300
 5  71  47  59   0   6   0 0.00  0.0    0  3.4 14 300   M    M   3        22 280
 6  71  47  59   0   6   0 0.00  0.0    0  6.7 18 180   M    M   8        28 180
 7  74  54  64   6   1   0    T  0.0    0 15.5 32 300   M    M   5 1      45 280
 8  71  49  60   2   5   0 0.01  0.0    0  6.0 13 290   M    M   6        17 170
 9  87  58  73  15   0   8 0.03  0.0    0 11.5 25 190   M    M   7 1      31 190
10  72  48  60   3   5   0    T  0.0    0  8.6 25 310   M    M   9 1      35 300
11  68  39  54  -3  11   0 0.00  0.0    0  3.4 15 300   M    M   5        25 280
12  55  46  51  -5  14   0 0.00  0.0    0  2.8  9  40   M    M   9        12 110
13  73  46  60   4   5   0 0.00  0.0    0  8.5 22 310   M    M   7        29 300
14  51  44  48  -7  17   0 0.10  0.0    0  5.0 12 350   M    M   9 1      16 350
15  49  42  46  -9  19   0 0.77  0.0    0  7.1 14 350   M    M  10 1      18  20
16  44  40  42 -13  23   0 0.32  0.0    0  8.9 14 350   M    M  10 18     17 360
17  45  40  43 -11  22   0 1.01  0.0    0 12.1 17 340   M    M  10 1      22 330
18  53  40  47  -7  18   0 0.06  0.0    0 12.0 18 330   M    M   8 8      25 330
19  59  33  46  -8  19   0 0.00  0.0    0  5.9 16 320   M    M   0        22 320
20  72  35  54   1  11   0 0.00  0.0    0  1.9 12 190   M    M   3        16 230
21  77  40  59   6   6   0 0.00  0.0    0  2.7  9 210   M    M   2 18     14 170
22  77  49  63  10   2   0 0.00  0.0    0  3.2 10 200   M    M   7 18     16 230
23  69  50  60   8   5   0 0.04  0.0    0  4.9 15 160   M    M   9        21 100
24  74  56  65  13   0   0 1.69  0.0    0 12.9 24 210   M    M   9 123    37 230
25  63  41  52   0  13   0 0.00  0.0    0  7.2 24 310   M    M   6        32 300
26  66  38  52   1  13   0    T  0.0    0  4.4 12 110   M    M   6        15 100
27  57  53  55   4  10   0 0.95  0.0    0  5.7 10 360   M    M  10 18     14 330
28  72  56  64  13   1   0 0.66  0.0    0  6.7 21 310   M    M   8 1      25 310
29  63  56  60  10   5   0 0.00  0.0    0  5.4 10 340   M    M   9        14 330
30  58  54  56   6   9   0    T  0.0    0  9.3 14 140   M    M  10 18     21 140
31  72  57  65  15   0   0 0.06  0.0    0 11.5 26 200   M    M  10 18     38 190
================================================================================
SM 2050 1445       268   8  5.70     0.0 211.7          M      216
================================================================================
AV 66.1 46.6                               6.8 FASTST   M    M   7    MAX(MPH)
                                 MISC ---->  # 32 300               # 45  280
================================================================================
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:    OCTOBER
                                          YEAR:     2009
                                          LATITUDE:   38 57 N
                                          LONGITUDE:  77 27 W

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

AVERAGE MONTHLY: 56.4   TOTAL FOR MONTH:   5.70    1 = FOG OR MIST
DPTR FM NORMAL:   1.4   DPTR FM NORMAL:    2.33    2 = FOG REDUCING VISIBILITY
HIGHEST:    87 ON  9    GRTST 24HR  1.73 ON 23-24      TO 1/4 MILE OR LESS
LOWEST:     33 ON 19                               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:  12
MAX 90 OR ABOVE:   0    0.10 INCH OR MORE:   7
MIN 32 OR BELOW:   0    0.50 INCH OR MORE:   5
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   2

[HDD (BASE 65) ]
TOTAL THIS MO.   268    CLEAR  (SCALE 0-3)   3
DPTR FM NORMAL   -55    PTCLDY (SCALE 4-7)  12
TOTAL FM JUL 1   287    CLOUDY (SCALE 8-10) 16
DPTR FM NORMAL  -101

[CDD (BASE 65) ]
TOTAL THIS MO.     8
DPTR FM NORMAL    -7    [PRESSURE DATA]
TOTAL FM JAN 1  1259    HIGHEST SLP M ON M
DPTR FM NORMAL   187    LOWEST  SLP 29.58 ON  7

[REMARKS]
#FINAL-10-09#