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:     FEBRUARY
                                          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  32  28  30  16  35   0 0.00  0.0    4  8.4 15 180   M    M  10 1      17 200
 2  35  27  31  17  34   0 0.00  0.0    4 12.7 20 200   M    M   3 18     23 200
 3  43  28  36  22  29   0 0.00  0.0    4 10.8 22 230   M    M   0 18     26 230
 4  45  32  39  24  26   0 0.00  0.0    2 13.2 20 210   M    M   0 18     22 210
 5  44  35  40  25  25   0 0.00  0.0    1 19.8 26 180   M    M   1        35 170
 6  41  20  31  16  34   0 0.13  1.0    T 13.3 25 190   M    M   8 1      30 190
 7  21  12  17   1  48   0    T    T    1 13.6 21 350   M    M   5        24 350
 8  20  15  18   2  47   0    T  0.1    1  9.1 16  20   M    M  10 1      18  20
 9  20  10  15  -1  50   0    T  0.3    1  7.7 15 300   M    M  10 18     15 290
10  24   5  15  -2  50   0    T    T    1 11.6 23 210   M    M   5 1      25 230
11  39  17  28  11  37   0 0.00  0.0    1 12.6 17 290   M    M   0        22 270
12  48  26  37  20  28   0 0.00  0.0    T  6.8 15 120   M    M   0 1      17 130
13  35  32  34  16  31   0 0.40  0.5    0 15.2 22 100   M    M   7 1      28  90
14  40  30  35  17  30   0 0.26  2.5    3 12.0 22 270   M    M   8 1      24 260
15  32  24  28  10  37   0 0.00  0.0    T 12.0 20 310   M    M   5        22 300
16  25  12  19   0  46   0    T    T    0 18.8 27 320   M    M   4        35 310
17  20   7  14  -5  51   0    T    T    0 11.4 20 320   M    M   3        23 320
18  30   2  16  -4  49   0    T    T    0  9.5 21 240   M    M   3        23 240
19  28  14  21   1  44   0 0.03  0.3    0  9.9 18 120   M    M   5 18     23 110
20  33  24  29   9  36   0 0.36  4.3    3 12.4 23 310   M    M  10 1      26 310
21  25   9  17  -4  48   0    T    T    4 10.2 21 320   M    M   7 1      23 330
22  26   9  18  -3  47   0    T    T    4  7.7 17 320   M    M   5 1      20 320
23  22   3  13  -8  52   0 0.00  0.0    3  5.6 13 320   M    M   1 1      14 340
24  30  13  22   0  43   0    T    T    2  5.0 13 310   M    M   8 18     15 310
25  30  19  25   3  40   0 0.00  0.0    2  5.3 14 310   M    M   7 18     15 330
26  32  13  23   0  42   0 0.00  0.0    2 13.2 25 170   M    M   0 18     30 170
27  32  22  27   4  38   0 0.01  0.1    1 18.9 26 180   M    M   9 168    32 180
28  22  17  20  -4  45   0    T    T    1 17.8 26 320   M    M  10 18     30 320
================================================================================
SM  874  505      1122   0  1.19     9.1 324.5          M      144              
================================================================================
AV 31.2 18.0                              11.6 FASTST  PSBL  %   5    MAX(MPH)  
                                 MISC ---->    27 320                 35  170   
================================================================================
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:    FEBRUARY
                                          YEAR:     2005
                                          LATITUDE:   43 55 N                   
                                          LONGITUDE:  92 30 W                   

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

AVERAGE MONTHLY: 24.6   TOTAL FOR MONTH:   1.19    1 = FOG                      
DPTR FM NORMAL:   6.2   DPTR FM NORMAL:    0.44    2 = FOG REDUCING VISIBILITY  
HIGHEST:    48 ON 12    GRTST 24HR  0.40 ON 13-13      TO 1/4 MILE OR LESS      
LOWEST:      2 ON 18                               3 = THUNDER                  
                        SNOW, ICE PELLETS, HAIL    4 = ICE PELLETS              
                        TOTAL MONTH:   9.1 INCHES  5 = HAIL                     
                        GRTST 24HR   4.3 ON 20-20  6 = GLAZE OR RIME            
                        GRTST DEPTH:   4 ON 22,21  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:  18    0.01 INCH OR MORE:   6                                  
MAX 90 OR ABOVE:   0    0.10 INCH OR MORE:   4                                  
MIN 32 OR BELOW:  27    0.50 INCH OR MORE:   0                                  
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   0                                  

[HDD (BASE 65) ]                                                                
TOTAL THIS MO.  1122    CLEAR  (SCALE 0-3)  10                                  
DPTR FM NORMAL  -183    PTCLDY (SCALE 4-7)   9                                  
SEASONAL TOTAL  5590    CLOUDY (SCALE 8-10)  9                                  
DPTR FM NORMAL  -697                                                            

[CDD (BASE 65) ]                                                                
TOTAL THIS MO.     0                                                            
DPTR FM NORMAL     0    [PRESSURE DATA]                                         
SEASONAL TOTAL     0    HIGHEST SLP 30.42 ON 18                                 
DPTR FM NORMAL     0    LOWEST  SLP 29.75 ON 20                                 

[REMARKS]