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000
CXUS53 KLSX 311600
CF6CPS
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)

                                          STATION:   CAHOKIA/ST. LOUIS IL
                                          MONTH:     DECEMBER
                                          YEAR:      2011
                                          LATITUDE:   38 34 N
                                          LONGITUDE:  90  9 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  50  27  39   1  26   0 0.00  0.0    0  3.2 10 150   M    M   0        14 150
 2  47  30  39   1  26   0    T  0.0    0  4.8 16 330   M    M   5 8      20 330
 3  61  43  52  14  13   0 0.19  0.0    0  8.4 20 170   M    M   7 1      26 150
 4  56  36  46   9  19   0 0.60  0.0    0 10.1 22 170   M    M  10 1      31 180
 5  36  32  34  -3  31   0    T    T    0 14.0 23 340   M    M  10        28 340
 6  35  32  34  -3  31   0    T    M    M  9.7 17 340   M    M  10 18     21 350
 7  39  29  34  -2  31   0    M    M    M  6.8 16 310   M    M   5 18     20 310
 8  45  24  35  -1  30   0 0.00  0.0    0  2.1 10 180   M    M   2        14 170
 9  38  24  31  -5  34   0 0.00  0.0    0  7.4 15  10   M    M   6 18     18 350
10  37  17  27  -8  38   0 0.00  0.0    0  3.1  8 160   M    M   0        13 160
11  46  22  34  -1  31   0 0.00  0.0    0  4.9 13 140   M    M   0        15 140
12  49  25  37   2  28   0    T  0.0    0  3.6 10 140   M    M   4        13 140
13  47  41  44   9  21   0 0.41  0.0    0  3.8  9 160   M    M  10 1      14 180
14  60  44  52  18  13   0    M  0.0    0  8.2 18 180   M    M   6 13     25 190
15  61  35  48  14  17   0 0.02  0.0    0 13.0 25 320   M    M   7 1      30 310
16  41  27  34   0  31   0 0.00  0.0    0  5.5 14 340   M    M   0        17 340
17  47  25  36   2  29   0 0.00  0.0    0  3.2 18 300   M    M   0        23 300
18  56  26  41   7  24   0 0.00  0.0    0  4.1 10 180   M    M   2        15 180
19  53  46  50  17  15   0 0.52  0.0    0  6.0 13 200   M    M  10 1      20 200
20  47  45  46  13  19   0 0.14  0.0    0  5.1 13 110   M    M   9 12     16 100
21  47  42  45  12  20   0    T  0.0    0  4.8 21 280   M    M  10 12     28 290
22  44  36  40   7  25   0 0.00  0.0    0  6.7 20 320   M    M   9 18     24 320
23  38  27  33   0  32   0 0.00  0.0    0  6.2 16 340   M    M   6        20 340
24  47  24  36   4  29   0 0.00  0.0    0  2.0  9 230   M    M   0 8      14 200
25  52  26  39   7  26   0 0.00  0.0    0  5.8 22 310   M    M   0        29 320
26  41  23  32   0  33   0 0.51    M    0  2.9 12 170   M    M   4 1      16 170
27  44  32  38   6  27   0 0.27    M    M  9.6 24 290   M    M   7 1      31 320
28  47  28  38   6  27   0 0.00  0.0    0  3.7 13 150   M    M   0        16 140
29  62  37  50  18  15   0 0.01  0.0    0  6.4 20 250   M    M   4        23 250
30  57  45  51  19  14   0 0.02    M    0 13.3 26 260   M    M   8        37 250
================================================================================
SM 1430  950       755   0  2.69    T    188.4          M      151
================================================================================
AV 47.7 31.7                               6.3 FASTST   M    M   5    MAX(MPH)
                                 MISC ---->  # 26 260               # 37  250
================================================================================
NOTES:
# LAST OF SEVERAL OCCURRENCES

COLUMN 17 PEAK WIND IN M.P.H.

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

                                          STATION:  CAHOKIA/ST. LOUIS IL
                                          MONTH:    DECEMBER
                                          YEAR:     2011
                                          LATITUDE:   38 34 N
                                          LONGITUDE:  90  9 W

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

AVERAGE MONTHLY: 39.7   TOTAL FOR MONTH:   2.69    1 = FOG OR MIST
DPTR FM NORMAL:   5.3   DPTR FM NORMAL:   -0.28    2 = FOG REDUCING VISIBILITY
HIGHEST:    62 ON 29    GRTST 24HR  0.79 ON  3- 4      TO 1/4 MILE OR LESS
LOWEST:     17 ON 10                               3 = THUNDER
                        SNOW, ICE PELLETS, HAIL    4 = ICE PELLETS
                        TOTAL MONTH:    T          5 = HAIL
                        GRTST 24HR    T  ON  5- 5  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:   0    0.10 INCH OR MORE:   7
MIN 32 OR BELOW:  19    0.50 INCH OR MORE:   3
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   0

[HDD (BASE 65) ]
TOTAL THIS MO.   755    CLEAR  (SCALE 0-3)  10
DPTR FM NORMAL  -162    PTCLDY (SCALE 4-7)  12
TOTAL FM JUL 1  1528    CLOUDY (SCALE 8-10)  8
DPTR FM NORMAL  -319

[CDD (BASE 65) ]
TOTAL THIS MO.     0
DPTR FM NORMAL     0    [PRESSURE DATA]
TOTAL FM JAN 1  1600    HIGHEST SLP M ON M
DPTR FM NORMAL   279    LOWEST  SLP 29.55 ON 30

[REMARKS]