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

                                          STATION:   WASHINGTON DULLES DC
                                          MONTH:     SEPTEMBER
                                          YEAR:      2011
                                          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  81  59  70  -3   0   5    T  0.0    0  4.7 13 190   M    M   5        16 150
 2  80  66  73   0   0   8 0.03  0.0    0  6.1 13 140   M    M   9        17 140
 3  80  68  74   2   0   9 0.15  0.0    0  4.1 15  10   M    M   7 13     20  10
 4  88  68  78   6   0  13 0.00  0.0    0  6.1 15 190   M    M   7 1      22 200
 5  80  63  72   0   0   7 1.99  0.0    0  3.7 21 360   M    M   9 1      29 360
 6  63  61  62 -10   3   0 1.07  0.0    0  9.1 18 360   M    M  10 1      25  10
 7  72  61  67  -4   0   2 1.11  0.0    0  4.9 10 350   M    M  10 123    21 360
 8  75  68  72   1   0   7 2.27  0.0    0  5.1 12  60   M    M  10 13     15 350
 9  84  68  76   5   0  11 0.26  0.0    0  3.3 10 160   M    M   8 18     14 170
10  83  64  74   4   0   9 0.00  0.0    0  5.1 17 330   M    M   3 18     21 320
11  83  63  73   3   0   8    T  0.0    0  3.0 26 310   M    M   6 138    32 320
12  83  59  71   1   0   6 0.00  0.0    0  2.0 10 240   M    M   4 18     15 240
13  84  58  71   2   0   6 0.00  0.0    0  3.9 12 230   M    M   2 18     20 160
14  88  62  75   6   0  10 0.02  0.0    0  5.2 16 300   M    M   4 138    22 290
15  74  50  62  -6   3   0 0.01  0.0    0  9.5 29 350   M    M   6 18     37 350
16  62  42  52 -16  13   0 0.00  0.0    0  2.9 12 320   M    M   6        15  10
17  64  49  57 -11   8   0    T  0.0    0  4.8 10  50   M    M   9        13  40
18  69  52  61  -6   4   0 0.00  0.0    0  4.3 12 340   M    M   7        31 210
19  69  58  64  -3   1   0 0.00  0.0    0  4.2  9 150   M    M  10        13 140
20  73  63  68   2   0   3 0.20  0.0    0  4.8 10 190   M    M   9 1      14 190
21  77  65  71   5   0   6 0.09  0.0    0  4.2 10 150   M    M  10 18     14 150
22  79  67  73   8   0   8 0.10  0.0    0  3.0  9 200   M    M   9 13     12 240
23  73  65  69   4   0   4 0.36  0.0    0  3.6  9 160   M    M   9 12     13 150
24  76  63  70   6   0   5 0.00  0.0    0  3.0  9 320   M    M   9 12     12 350
25  76  66  71   7   0   6 0.11  0.0    0  1.7  7  40   M    M   8 1       8  20
26  80  69  75  11   0  10    T  0.0    0  5.1 10 140   M    M   8 1      15 180
27  79  69  74  11   0   9    T  0.0    0  7.0 17 150   M    M   9 13     25 160
28  80  64  72   9   0   7 0.16  0.0    0  4.8 12 160   M    M   8 13     16 150
29  76  56  66   4   0   1    T  0.0    0  5.3 18 250   M    M   5 12     26 250
30  73  54  64   2   1   0 0.00  0.0    0  5.8 21 320   M    M   5        25 320
================================================================================
SM 2304 1840        33 160  7.93     0.0 140.3          M      221
================================================================================
AV 76.8 61.3                               4.7 FASTST   M    M   7    MAX(MPH)
                                 MISC ---->  # 29 350               # 37  350
================================================================================
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:    SEPTEMBER
                                          YEAR:     2011
                                          LATITUDE:   38 57 N
                                          LONGITUDE:  77 27 W

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

AVERAGE MONTHLY: 69.1   TOTAL FOR MONTH:   7.93    1 = FOG OR MIST
DPTR FM NORMAL:   1.2   DPTR FM NORMAL:    4.01    2 = FOG REDUCING VISIBILITY
HIGHEST:    88 ON 14, 4 GRTST 24HR  2.91 ON  5- 6      TO 1/4 MILE OR LESS
LOWEST:     42 ON 16                               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:  15
MAX 90 OR ABOVE:   0    0.10 INCH OR MORE:  11
MIN 32 OR BELOW:   0    0.50 INCH OR MORE:   4
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   4

[HDD (BASE 65) ]
TOTAL THIS MO.    33    CLEAR  (SCALE 0-3)   2
DPTR FM NORMAL   -23    PTCLDY (SCALE 4-7)  14
TOTAL FM JUL 1    33    CLOUDY (SCALE 8-10) 14
DPTR FM NORMAL   -25

[CDD (BASE 65) ]
TOTAL THIS MO.   160
DPTR FM NORMAL    19    [PRESSURE DATA]
TOTAL FM JAN 1  1495    HIGHEST SLP M ON M
DPTR FM NORMAL   338    LOWEST  SLP 29.66 ON 30

[REMARKS]
#FINAL-09-11#