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:     JANUARY
                                          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  31  14  23  11  42   0 0.39    T    0  9.1 29 130   M    M   6 146    35 130
 2  31  12  22  10  43   0 0.00  0.0    T  9.5 16 290   M    M   4 1      18 290
 3  16   9  13   1  52   0 0.00  0.0    T  7.9 14  10   M    M   5        16  10
 4  18  11  15   3  50   0 0.02  0.2    T 11.0 23  20   M    M   9 18     25  30
 5  11   7   9  -3  56   0 0.12  2.5    T 16.1 23  20   M    M   8 12     29  20
 6  10  -2   4  -8  61   0 0.07  1.2    4 10.3 21 190   M    M   4 1      25 200
 7  16   3  10  -2  55   0    T  0.2    4 12.9 23 190   M    M  10 18     30 190
 8  19  10  15   4  50   0 0.01  0.2    4  7.5 18 190   M    M   9 18     22 190
 9  28  10  19   8  46   0    T    T    4 13.5 32 320   M    M   9 168    35 320
10  15   4  10  -1  55   0    T    T    4  8.7 15 320   M    M   6 18     17 320
11  26   8  17   6  48   0    T  0.0    4  8.0 13  70   M    M   8 126    15  70
12  31  23  27  16  38   0 0.01  0.0    3 12.5 25 310   M    M  10 126    30 310
13  23 -10   7  -4  58   0    T    T    3 21.0 31 320   M    M   5 18     36 310
14  -3 -15  -9 -20  74   0 0.00  0.0    3 10.7 18 250   M    M   0        22 310
15  -1 -14  -7 -18  72   0 0.00  0.0    3  9.5 15 290   M    M   0        17 280
16   5  -9  -2 -13  67   0 0.00  0.0    2  9.4 15 280   M    M   1        16 270
17   1 -13  -6 -17  71   0 0.00  0.0    2  5.6 12 160   M    M   0 8      14 160
18  35  -7  14   3  51   0    T    T    2 25.5 45 190   M    M   5 189    52 190
19  35  17  26  15  39   0    T    T    2 16.1 40 320   M    M   9 18     48 320
20  20  18  19   7  46   0    T  0.1    2 10.0 15 140   M    M  10 1      17 140
21  21  17  19   7  46   0 0.48  8.5    2 14.5 28 150   M    M  10 128    36 140
22  21   2  12   0  53   0 0.07  1.0   11 18.3 43 310   M    M   6 19     48 310
23  17  -2   8  -4  57   0 0.00  0.0   11 15.4 25 190   M    M   1        31 180
24  32  16  24  12  41   0 0.00  0.0   11 10.7 23 200   M    M   1 18     26 210
25  39  21  30  18  35   0 0.00  0.0    9 15.2 24 320   M    M   1 18     28 320
26  33  10  22  10  43   0    T    T    6 13.1 23 330   M    M   M 1      26 340
27  20   3  12  -1  53   0 0.00  0.0    6 10.9 17 170   M    M   M        21 170
28  22   9  16   3  49   0 0.00  0.0    5 14.7 20 150   M    M   6        23 170
29  29  20  25  12  40   0 0.00  0.0    5  6.4 15 180   M    M  10 18     16 170
30  30  25  28  15  37   0 0.00  0.0    5  7.8 13 130   M    M   9 18     15 120
31  32  27  30  16  35   0    T    T    5  3.9  8 200   M    M   8 18     10 190
================================================================================
SM  663  224      1563   0  1.17    13.9 365.7          M      170              
================================================================================
AV 21.4  7.2                              11.8 FASTST  PSBL  %   6    MAX(MPH)  
                                 MISC ---->    45 190                 52  190   
================================================================================
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:    JANUARY
                                          YEAR:     2005
                                          LATITUDE:   43 55 N                   
                                          LONGITUDE:  92 30 W                   

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

AVERAGE MONTHLY: 14.3   TOTAL FOR MONTH:   1.17    1 = FOG                      
DPTR FM NORMAL:   2.5   DPTR FM NORMAL:    0.23    2 = FOG REDUCING VISIBILITY  
HIGHEST:    39 ON 25    GRTST 24HR  0.48 ON 21-21      TO 1/4 MILE OR LESS      
LOWEST:    -15 ON 14                               3 = THUNDER                  
                        SNOW, ICE PELLETS, HAIL    4 = ICE PELLETS              
                        TOTAL MONTH:  13.9 INCHES  5 = HAIL                     
                        GRTST 24HR   8.5 ON 21-21  6 = GLAZE OR RIME            
                        GRTST DEPTH:  11 ON 24,23  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:  27    0.01 INCH OR MORE:   8                                  
MAX 90 OR ABOVE:   0    0.10 INCH OR MORE:   3                                  
MIN 32 OR BELOW:  31    0.50 INCH OR MORE:   0                                  
MIN  0 OR BELOW:   8    1.00 INCH OR MORE:   0                                  

[HDD (BASE 65) ]                                                                
TOTAL THIS MO.  1563    CLEAR  (SCALE 0-3)   7                                  
DPTR FM NORMAL   -87    PTCLDY (SCALE 4-7)   9                                  
SEASONAL TOTAL  4468    CLOUDY (SCALE 8-10) 13                                  
DPTR FM NORMAL  -514                                                            

[CDD (BASE 65) ]                                                                
TOTAL THIS MO.     0                                                            
DPTR FM NORMAL     0    [PRESSURE DATA]                                         
SEASONAL TOTAL     0    HIGHEST SLP 30.90 ON 17                                 
DPTR FM NORMAL     0    LOWEST  SLP 29.48 ON 12                                 

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