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000
CXUS51 KLWX 011553
CF6IAD
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)

                                          STATION:   WASHINGTON DULLES DC
                                          MONTH:     FEBRUARY
                                          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  36  26  31  -1  34   0 0.11  0.0    4  2.0 10 100   M    M  10 168    16 100
 2  48  30  39   7  26   0 0.59  0.0    2 10.4 35 300   M    M   8 1      46 290
 3  33  23  28  -5  37   0 0.00  0.0    1 10.2 33 300   M    M   6        40 300
 4  39  20  30  -3  35   0 0.00  0.0    1  2.7 12 220   M    M   8        15 220
 5  39  33  36   3  29   0 0.16  0.0    1  4.9 21 290   M    M   9 12     24 290
 6  45  29  37   4  28   0 0.00  0.0    1  6.2 26 310   M    M   7        32 310
 7  46  24  35   2  30   0 0.00  0.0    0  0.8  8 300   M    M   7 18      8 300
 8  38  22  30  -3  35   0    T  0.0    0 16.3 35 300   M    M   6 1      43 290
 9  33  16  25  -8  40   0    T  0.1    0  6.2 18 210   M    M   7 15     23 200
10  33  15  24 -10  41   0    T    T    0  8.3 20 310   M    M   4 1      25 310
11  44  11  28  -6  37   0 0.00  0.0    0  2.3 10 200   M    M   1        13 200
12  44  16  30  -4  35   0 0.00  0.0    0  8.2 28 290   M    M   3        35 300
13  53  26  40   6  25   0 0.00  0.0    0  9.4 20 210   M    M   7        26 210
14  66  40  53  19  12   0 0.00  0.0    0 18.3 39 290   M    M   5        49 300
15  46  26  36   1  29   0 0.00  0.0    0 10.8 38 300   M    M   2        45 300
16  59  25  42   7  23   0 0.00  0.0    0  9.0 22 200   M    M   5 8      30 200
17  72  39  56  21   9   0 0.00  0.0    0  8.7 20 210   M    M   7        26 210
18  75  53  64  29   1   0 0.00  0.0    0 13.5 36 300   M    M   6        45 310
19  55  36  46  10  19   0 0.00  0.0    0 25.9 43 300   M    M   0        55 300
20  48  30  39   3  26   0 0.01  0.0    0  8.3 29 320   M    M   6        37 320
21  44  28  36   0  29   0 0.22  0.4    0  8.5 18 360   M    M  10 146    23 350
22  32  22  27  -9  38   0 0.08  0.2    1  7.3 16 360   M    M   6 14     22  10
23  44  24  34  -3  31   0 0.00  0.0    0  2.5  8 330   M    M   3 8      10  30
24  50  22  36  -1  29   0 0.13  0.0    0  7.2 21 200   M    M   7 18     26 200
25  64  34  49  12  16   0 0.20  0.0    0 17.9 46 300   M    M   8 1      59 290
26  49  30  40   2  25   0 0.00  0.0    0  5.4 16 180   M    M   7        23 200
27  62  30  46   8  19   0    T  0.0    0  4.1 12 140   M    M   8        16 170
28  67  39  53  15  12   0 0.71  0.0    0  9.6 26 210   M    M   8 138    33 220
================================================================================
SM 1364  769       750   0  2.21     0.7 244.9          M      171
================================================================================
AV 48.7 27.5                               8.7 FASTST   M    M   6    MAX(MPH)
                                 MISC ---->  # 46 300               # 59  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:    FEBRUARY
                                          YEAR:     2011
                                          LATITUDE:   38 57 N
                                          LONGITUDE:  77 27 W

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

AVERAGE MONTHLY: 38.1   TOTAL FOR MONTH:   2.21    1 = FOG OR MIST
DPTR FM NORMAL:   3.3   DPTR FM NORMAL:   -0.56    2 = FOG REDUCING VISIBILITY
HIGHEST:    75 ON 18    GRTST 24HR  0.71 ON 28-28      TO 1/4 MILE OR LESS
LOWEST:     11 ON 11                               3 = THUNDER
                        SNOW, ICE PELLETS, HAIL    4 = ICE PELLETS
                        TOTAL MONTH:   0.7 INCH    5 = HAIL
                        GRTST 24HR   0.4 ON   M    6 = FREEZING RAIN OR DRIZZLE
                        GRTST DEPTH:   4 ON  1     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:   1    0.01 INCH OR MORE:   9
MAX 90 OR ABOVE:   0    0.10 INCH OR MORE:   7
MIN 32 OR BELOW:  21    0.50 INCH OR MORE:   2
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   0

[HDD (BASE 65) ]
TOTAL THIS MO.   750    CLEAR  (SCALE 0-3)   4
DPTR FM NORMAL  -124    PTCLDY (SCALE 4-7)  21
TOTAL FM JUL 1  3679    CLOUDY (SCALE 8-10)  3
DPTR FM NORMAL   -81

[CDD (BASE 65) ]
TOTAL THIS MO.     0
DPTR FM NORMAL     0    [PRESSURE DATA]
TOTAL FM JAN 1     0    HIGHEST SLP 30.47 ON  3
DPTR FM NORMAL     0    LOWEST  SLP 29.34 ON 25

[REMARKS]
#FINAL-02-11#