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

                                          STATION:   DETROIT
                                          MONTH:     APRIL
                                          YEAR:      2005
                                          LATITUDE:   42 13 N                   
                                          LONGITUDE:  83 20 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
                                          AVG MX 2MIN
DY MAX MIN AVG DEP HDD CDD  WTR  SNW DPTH SPD SPD DIR MIN PSBL S-S WX    SPD DR
================================================================================

 1  55  35  45   2  20   0 0.00  0.0    0  9.2 23 310   M    M   6        30 300
 2  45  38  42  -1  23   0 0.23  0.0    0 18.0 29 360   M    M  10        37  10
 3  59  36  48   5  17   0 0.00  0.0    0 17.4 28 310   M    M   4        36 330
 4  66  37  52   8  13   0 0.00  0.0    0  6.9 16 320   M    M   1        21 300
 5  77  44  61  17   4   0 0.00  0.0    0  8.3 25 220   M    M   2        32 240
 6  78  51  65  21   0   0 0.00  0.0    0  7.2 17 180   M    M   5        21 160
 7  62  43  53   8  12   0    T  0.0    0  9.4 17  20   M    M   7        22  10
 8  63  36  50   5  15   0 0.00  0.0    0  6.9 16  60   M    M   1        21  70
 9  65  36  51   5  14   0 0.00  0.0    0  6.6 14 110   M    M   3        17 100
10  70  42  56  10   9   0 0.00  0.0    0  7.2 14  70   M    M   5        20 130
11  61  44  53   7  12   0 0.00  0.0    0  9.6 17  70   M    M   5        22 100
12  54  40  47   0  18   0 0.00  0.0    0 13.6 23  50   M    M   5        29  30
13  60  39  50   3  15   0 0.00  0.0    0 13.6 22 360   M    M   0        29  10
14  66  39  53   6  12   0 0.00  0.0    0  9.4 20 350   M    M   1        24  30
15  63  37  50   2  15   0 0.00  0.0    0  7.6 17  50   M    M   0        21  60
16  68  39  54   6  11   0 0.00  0.0    0  5.4 13 160   M    M   3        16 160
17  74  44  59  10   6   0    T  0.0    0  5.8 15 230   M    M   5        18 230
18  74  49  62  13   3   0 0.00  0.0    0  5.5 12 150   M    M   2 8      17 160
19  83  50  67  18   0   2 0.00  0.0    0 10.4 26 210   M    M   2        31 210
20  73  43  58   8   7   0 0.19  0.0    0 15.0 26 270   M    M   6 138    35 270
21  56  38  47  -3  18   0 0.00  0.0    0  8.9 16  60   M    M   4        21  60
22  51  38  45  -6  20   0 0.17  0.0    0  9.4 20  10   M    M   7 1      24  10
23  45  33  39 -12  26   0 0.33  1.2    0 16.2 25 340   M    M  10 1      32 340
24  35  32  34 -17  31   0 0.31  3.1    0 15.4 21 290   M    M  10 129    28 300
25  62  35  49  -3  16   0    T    T    0 15.6 29 270   M    M   7        36 280
26  53  42  48  -4  17   0 0.37  0.0    0 11.4 24 210   M    M   8 1      28 230
27  51  40  46  -7  19   0 0.06  0.0    0 13.1 29 270   M    M   8 1      31 270
28  55  38  47  -6  18   0 0.00  0.0    0 10.6 20 280   M    M   5        25 280
29  57  43  50  -3  15   0    T  0.0    0  7.0 17  40   M    M   9        21  40
30  55  45  50  -4  15   0    T  0.0    0  6.3 14 290   M    M  10        21 290
================================================================================
SM 1836 1206       421   2  1.66     4.3 306.9          M      151              
================================================================================
AV 61.2 40.2                              10.2 FASTST  PSBL  %   5    MAX(MPH)  
                                 MISC ---->  # 29 270                 37   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:  DETROIT
                                          MONTH:    APRIL
                                          YEAR:     2005
                                          LATITUDE:   42 13 N                   
                                          LONGITUDE:  83 20 W                   

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

AVERAGE MONTHLY: 50.7   TOTAL FOR MONTH:   1.66    1 = FOG                      
DPTR FM NORMAL:   2.6   DPTR FM NORMAL:   -1.39    2 = FOG REDUCING VISIBILITY  
HIGHEST:    83 ON 19    GRTST 24HR  0.45 ON 22-23      TO 1/4 MILE OR LESS      
LOWEST:     32 ON 24                               3 = THUNDER                  
                        SNOW, ICE PELLETS, HAIL    4 = ICE PELLETS              
                        TOTAL MONTH:   4.3 INCHES  5 = HAIL                     
                        GRTST 24HR   3.1 ON 24-24  6 = GLAZE OR RIME            
                        GRTST DEPTH:   0           7 = BLOWING DUST OR SAND:    
                                                       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:   7                                  
MAX 90 OR ABOVE:   0    0.10 INCH OR MORE:   6                                  
MIN 32 OR BELOW:   1    0.50 INCH OR MORE:   0                                  
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   0                                  

[HDD (BASE 65) ]                                                                
TOTAL THIS MO.   421    CLEAR  (SCALE 0-3)  10                                  
DPTR FM NORMAL  -106    PTCLDY (SCALE 4-7)  13                                  
SEASONAL TOTAL  5831    CLOUDY (SCALE 8-10)  7                                  
DPTR FM NORMAL  -326                                                            

[CDD (BASE 65) ]                                                                
TOTAL THIS MO.     2                                                            
DPTR FM NORMAL    -4    [PRESSURE DATA]                                         
SEASONAL TOTAL     2    HIGHEST SLP 30.51 ON 16                                 
DPTR FM NORMAL    -4    LOWEST  SLP 29.41 ON 24                                 

[REMARKS]