Explanation of the Preliminary Monthly Climate Data (F6) Product

These data are preliminary and have not undergone final quality control by the National Climatic Data Center (NCDC). Therefore, these data are subject to revision. Final and certified climate data can be accessed at the NCDC - http://www.ncdc.noaa.gov.

WFO Monthly/Daily Climate Data

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

                                          STATION:   ROCHESTER
                                          MONTH:     JULY
                                          YEAR:      2005
                                          LATITUDE:   43 55 N                   
                                          LONGITUDE:  92 30 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  73  56  65  -4   0   0 0.00  0.0    0 10.4 20 330   M    M   3        23 320
 2  76  52  64  -5   1   0 0.00  0.0    0 12.2 18 170   M    M   0        22 170
 3  77  62  70   1   0   5 0.08  0.0    0 12.0 35 150   M    M   2 13     40 180
 4  79  61  70   0   0   5 0.00  0.0    0  8.4 17 290   M    M   1 12     20 290
 5  74  56  65  -5   0   0 0.00  0.0    0  8.9 16 340   M    M   3 18     20 350
 6  78  56  67  -3   0   2 0.00  0.0    0  3.6 10  60   M    M   1 18     14  40
 7  80  58  69  -1   0   4 0.00  0.0    0  7.8 13 150   M    M   1 18     16 150
 8  83  62  73   3   0   8    T  0.0    0 10.6 20 190   M    M   2 38     23 180
 9  87  69  78   8   0  13    T  0.0    0 12.1 17 200   M    M   0 8      23 190
10  87  67  77   7   0  12 0.00  0.0    0 11.7 21 200   M    M   0 8      24 200
11  86  64  75   5   0  10 0.00  0.0    0  7.4 16 190   M    M   0 18     20 170
12  88  61  75   5   0  10 0.00  0.0    0  6.3 14  30   M    M   0 18     17  20
13  90  64  77   7   0  12 0.00  0.0    0  7.7 15  30   M    M   0 18     18  30
14  90  68  79   9   0  14 0.00  0.0    0  5.4 12  30   M    M   0 18     16  20
15  91  67  79   9   0  14 0.00  0.0    0  4.2 10 300   M    M   0 18     12 300
16  90  69  80  10   0  15 0.00  0.0    0  8.6 16 220   M    M   0 18     20 220
17  91  70  81  11   0  16 0.21  0.0    0 13.9 30 290   M    M   1 138    36 290
18  80  61  71   1   0   6 0.02  0.0    0 13.4 29 280   M    M   3        33 280
19  85  53  69  -2   0   4 0.00  0.0    0  8.6 18 230   M    M   0 1      24 240
20  88  65  77   6   0  12 0.42  0.0    0  8.2 29 260   M    M   2 13     35 260
21  86  68  77   6   0  12 0.90  0.0    0  6.8 30 270   M    M   2 138    37 260
22  86  68  77   6   0  12 0.00  0.0    0  4.7 12 160   M    M   0 18     14 170
23  82  72  77   6   0  12 0.01  0.0    0 15.5 24 140   M    M   3 18     29 140
24  89  72  81  10   0  16 0.00  0.0    0 10.1 21 210   M    M   2 18     28 220
25  82  65  74   4   0   9 3.48  0.0    0 10.4 39 340   M    M   4 123    46 340
26  69  56  63  -7   2   0 0.00  0.0    0 13.1 21 340   M    M   6 1      26 340
27  71  50  61  -9   4   0 0.00  0.0    0  6.4 10 280   M    M   1        14 270
28  77  52  65  -5   0   0 0.00  0.0    0 11.5 22 210   M    M   1        28 220
29  78  57  68  -2   0   3 0.00  0.0    0  6.4 13 140   M    M   0 12     15 140
30  83  63  73   3   0   8    T  0.0    0 13.3 24 190   M    M   0        29 200
31  83  63  73   3   0   8 0.01  0.0    0 12.2 18 190   M    M   2 3      31 210
================================================================================
SM 2559 1927         7 242  5.13     0.0 291.8          M       40              
================================================================================
AV 82.5 62.2                               9.4 FASTST  PSBL  %   1    MAX(MPH)  
                                 MISC ---->    39 340                 46  340   
================================================================================
NOTES:
# LAST OF SEVERAL OCCURRENCES

COLUMN 17 PEAK WIND IN M.P.H.

PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6) , PAGE 2

                                          STATION:  ROCHESTER
                                          MONTH:    JULY
                                          YEAR:     2005
                                          LATITUDE:   43 55 N                   
                                          LONGITUDE:  92 30 W                   

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

AVERAGE MONTHLY: 72.4   TOTAL FOR MONTH:   5.13    1 = FOG                      
DPTR FM NORMAL:   2.3   DPTR FM NORMAL:    0.52    2 = FOG REDUCING VISIBILITY  
HIGHEST:    91 ON 17,15 GRTST 24HR  3.48 ON 25-25      TO 1/4 MILE OR LESS      
LOWEST:     50 ON 27                               3 = THUNDER                  
                        SNOW, ICE PELLETS, HAIL    4 = ICE PELLETS              
                        TOTAL MONTH:   0.0 INCH    5 = HAIL                     
                        GRTST 24HR     0.0         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:   8                                  
MAX 90 OR ABOVE:   5    0.10 INCH OR MORE:   4                                  
MIN 32 OR BELOW:   0    0.50 INCH OR MORE:   2                                  
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   1                                  

[HDD (BASE 65) ]                                                                
TOTAL THIS MO.     7    CLEAR  (SCALE 0-3)  29                                  
DPTR FM NORMAL   -16    PTCLDY (SCALE 4-7)   2                                  
SEASONAL TOTAL     7    CLOUDY (SCALE 8-10)  0                                  
DPTR FM NORMAL   -16                                                            

[CDD (BASE 65) ]                                                                
TOTAL THIS MO.   242                                                            
DPTR FM NORMAL    61    [PRESSURE DATA]                                         
SEASONAL TOTAL   463    HIGHEST SLP 30.22 ON 29                                 
DPTR FM NORMAL   152    LOWEST  SLP 29.63 ON 25                                 

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