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000
CXUS55 KLOT 010700
CF6ORD
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)

                                          STATION:   CHICAGO-OHARE IL
                                          MONTH:     MARCH
                                          YEAR:      2010
                                          LATITUDE:   41 58 N
                                          LONGITUDE:  87 54 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  27  32   0  33   0 0.00  0.0    3  7.7 14  50   M    M   9        26  30
 2  33  23  28  -4  37   0 0.00  0.0    3  8.6 15  20   M    M   9        26  30
 3  39  24  32  -1  33   0 0.00  0.0    3  8.4 14 340   M    M   5        28  40
 4  42  22  32  -1  33   0 0.00  0.0    2  6.7 15  50   M    M   2        28  40
 5  38  23  31  -2  34   0 0.00  0.0    1  6.7 16  50   M    M   1        26  60
 6  45  20  33  -1  32   0 0.00  0.0    0  3.4 12 210   M    M   0 8      14 210
 7  46  26  36   2  29   0 0.03  0.0    0  3.8 12 200   M    M   7 18     14 200
 8  44  33  39   5  26   0 0.00  0.0    0  2.3  8  60   M    M   9 128    20  60
 9  51  32  42   7  23   0 0.01  0.0    0  6.4 13 120   M    M   9 128    30  60
10  62  46  54  19  11   0 0.07  0.0    0  8.1 17 210   M    M   8 18     22 190
11  60  44  52  16  13   0 0.34  0.0    0  9.4 20 130   M    M   9 13     24 140
12  55  40  48  12  17   0 0.01  0.0    0  8.6 22  30   M    M   9 1      39  40
13  45  41  43   7  22   0 0.61  0.0    0 16.2 25  40   M    M  10 1      37  40
14  50  40  45   8  20   0    T  0.0    0 16.5 26  40   M    M   9 1      35  30
15  48  39  44   7  21   0 0.00  0.0    0  7.6 17  30   M    M   8        32  40
16  61  35  48  11  17   0 0.00  0.0    0  4.4 10  60   M    M   5        18  50
17  63  32  48  10  17   0 0.00  0.0    0  3.9 10  80   M    M   1 8      23  50
18  61  41  51  13  14   0 0.00  0.0    0  9.5 22 250   M    M   4        28 240
19  65  39  52  14  13   0 0.00  0.0    0 11.5 23  30   M    M   8        30  30
20  39  31  35  -4  30   0 0.42  1.8    0 15.6 24  40   M    M  10 1      32  30
21  42  33  38  -1  27   0 0.02    T    0 13.6 22  30   M    M   8 1      35  50
22  49  34  42   3  23   0 0.00  0.0    0 12.7 21  20   M    M   4        28  30
23  59  28  44   4  21   0 0.00  0.0    0  4.5 13 100   M    M   2        20  80
24  53  35  44   4  21   0 0.00  0.0    0  4.8 12 110   M    M  10        28  40
25  47  29  38  -3  27   0 0.03  0.0    0 17.8 36  20   M    M   9        43  10
26  41  27  34  -7  31   0 0.00  0.0    0  9.7 22  20   M    M   2        28  60
27  50  31  41   0  24   0 0.01  0.0    0  9.4 15  70   M    M  10        26  80
28  52  37  45   3  20   0 0.00  0.0    0 14.1 26  20   M    M   6        33  20
29  46  30  38  -4  27   0 0.00  0.0    0  6.9 13  10   M    M   5        24  50
30  64  29  47   5  18   0 0.00  0.0    0 11.0 20 190   M    M   5 1      26 180
31  77  51  64  22   1   0 0.00  0.0    0 14.8 28 190   M    M   8        35 210
================================================================================
SM 1563 1022       715   0  1.55     1.8 284.6          M      201
================================================================================
AV 50.4 33.0                               9.2 FASTST   M    M   6    MAX(MPH)
                                 MISC ---->  # 36  20               # 43   10
================================================================================
NOTES:
# LAST OF SEVERAL OCCURRENCES

COLUMN 17 PEAK WIND IN M.P.H.

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

                                          STATION:  CHICAGO-OHARE IL
                                          MONTH:    MARCH
                                          YEAR:     2010
                                          LATITUDE:   41 58 N
                                          LONGITUDE:  87 54 W

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

AVERAGE MONTHLY: 41.7   TOTAL FOR MONTH:   1.55    1 = FOG OR MIST
DPTR FM NORMAL:   4.4   DPTR FM NORMAL:   -1.10    2 = FOG REDUCING VISIBILITY
HIGHEST:    77 ON 31    GRTST 24HR  0.61 ON 13-13      TO 1/4 MILE OR LESS
LOWEST:     20 ON  6                               3 = THUNDER
                        SNOW, ICE PELLETS, HAIL    4 = ICE PELLETS
                        TOTAL MONTH:   1.8 INCHES  5 = HAIL
                        GRTST 24HR   1.8 ON   M    6 = FREEZING RAIN OR DRIZZLE
                        GRTST DEPTH:   3 ON  3, 2  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:   3
MIN 32 OR BELOW:  16    0.50 INCH OR MORE:   1
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   0

[HDD (BASE 65) ]
TOTAL THIS MO.   715    CLEAR  (SCALE 0-3)   6
DPTR FM NORMAL  -143    PTCLDY (SCALE 4-7)  11
TOTAL FM JUL 1  5451    CLOUDY (SCALE 8-10) 14
DPTR FM NORMAL  -253

[CDD (BASE 65) ]
TOTAL THIS MO.     0
DPTR FM NORMAL    -1    [PRESSURE DATA]
TOTAL FM JAN 1     0    HIGHEST SLP M ON M
DPTR FM NORMAL    -1    LOWEST  SLP 28.92 ON 31

[REMARKS]
#FINAL-03-10#