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

                                          STATION:   GRAND FORKS INTL AP ND
                                          MONTH:     FEBRUARY
                                          YEAR:      2013
                                          LATITUDE:   47 57 N                   
                                          LONGITUDE:  97 11 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  -2 -19 -10 -18  75   0    T    T    4  6.0 15 180   M    M   5 1      17 180
 2   7 -12  -2 -10  67   0 0.03  0.7    4  7.2 17 320   M    M   7 18     22 320
 3   6  -8  -1  -9  66   0 0.00  0.0    4  3.6  9 350   M    M   7        12 340
 4  29   1  15   6  50   0 0.08  2.2    4 14.1 25 330   M    M   9 19     31 330
 5  27   0  14   5  51   0    T    T    5 11.5 26 350   M    M   9 189    32 350
 6  19   9  14   5  51   0 0.11  1.4    5 10.8 17  10   M    M  10 1      21  50
 7  11  -3   4  -5  61   0    T    T    6  5.6 15 350   M    M   7 1      18 360
 8  25  10  18   8  47   0    T  0.0    6 13.7 28 180   M    M   9 16     36 180
 9  30  21  26  16  39   0 0.00  0.0    6  5.2 16 150   M    M  10 1      18 150
10  29  22  26  16  39   0 0.04  3.8    6 18.0 35 350   M    M  10 1      40 350
11  24  13  19   8  46   0    T    T    6 15.8 31 360   M    M   9 1      37 350
12  33  12  23  12  42   0 0.00  0.0    6  9.8 17 290   M    M   6        20 280
13  28  12  20   9  45   0 0.00  0.0    6  5.8 12 350   M    M   6        13 350
14  21   2  12   0  53   0 0.00  0.0    6 12.4 22 350   M    M   7        25 350
15  17  -6   6  -6  59   0 0.00  0.0    6  5.2 13 290   M    M   3        14 290
16  16  -5   6  -6  59   0    T    T    6 12.5 25 180   M    M   5 128    29 180
17  29  15  22   9  43   0 0.03  0.1    6 19.9 30 180   M    M  10 169    36 180
18  26  -6  10  -3  55   0 0.08  2.5    7 30.6 43 340   M    M  10 1289   51 350
19  -5 -15 -10 -23  75   0 0.00  0.0    7 18.6 31 340   M    M   6 8      38 340
20   3 -18  -7 -21  72   0 0.00  0.0    7  3.5  9 140   M    M   4        10 150
21  17  -4   7  -7  58   0 0.00  0.0    6  5.8 15 160   M    M   6        21 130
22  17   0   9  -5  56   0 0.00  0.0    6  5.6 12 330   M    M   7 12     14 320
23  19   4  12  -3  53   0    T    T    6  5.8 13 150   M    M   7 128    16 140
24  24   3  14  -1  51   0    T  0.1    6  9.0 15 180   M    M   9 12     17 180
25  28   3  16   0  49   0 0.00  0.0    6 10.6 20 180   M    M   1        24 180
26  20   8  14  -2  51   0    T    T    5  8.8 20 190   M    M   8 12     22 190
27  28   8  18   1  47   0 0.00  0.0    5 14.9 29 350   M    M   7 12     33 360
28  25   7  16  -1  49   0 0.00  0.0    5 11.9 18  10   M    M   7        21  20
================================================================================
SM  551   54      1509   0  0.37    10.8 302.2          M      201              
================================================================================
AV 19.7  1.9                              10.8 FASTST   M    M   7    MAX(MPH)  
                                 MISC ---->  # 43 340               # 51  350   
================================================================================
NOTES:
# LAST OF SEVERAL OCCURRENCES

COLUMN 17 PEAK WIND IN M.P.H.

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

                                          STATION:  GRAND FORKS INTL AP ND
                                          MONTH:    FEBRUARY
                                          YEAR:     2013
                                          LATITUDE:   47 57 N                   
                                          LONGITUDE:  97 11 W                   

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

AVERAGE MONTHLY: 10.8   TOTAL FOR MONTH:   0.37    1 = FOG OR MIST              
DPTR FM NORMAL:  -1.2   DPTR FM NORMAL:   -0.15    2 = FOG REDUCING VISIBILITY  
HIGHEST:    33 ON 12    GRTST 24HR  0.11 ON  6- 6      TO 1/4 MILE OR LESS      
LOWEST:    -19 ON  1                               3 = THUNDER                  
                        SNOW, ICE PELLETS, HAIL    4 = ICE PELLETS              
                        TOTAL MONTH:  10.8 INCHES  5 = HAIL                     
                        GRTST 24HR   3.8 ON   M    6 = FREEZING RAIN OR DRIZZLE 
                        GRTST DEPTH:   7 ON 20,19  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:  27    0.01 INCH OR MORE:   6                                  
MAX 90 OR ABOVE:   0    0.10 INCH OR MORE:   1                                  
MIN 32 OR BELOW:  28    0.50 INCH OR MORE:   0                                  
MIN  0 OR BELOW:  12    1.00 INCH OR MORE:   0                                  

[HDD (BASE 65) ]                                                                
TOTAL THIS MO.  1509    CLEAR  (SCALE 0-3)   2                                  
DPTR FM NORMAL    25    PTCLDY (SCALE 4-7)  16                                  
TOTAL FM JUL 1  7001    CLOUDY (SCALE 8-10) 10                                  
DPTR FM NORMAL  -149                                                            

[CDD (BASE 65) ]                                                                
TOTAL THIS MO.     0                                                            
DPTR FM NORMAL     0    [PRESSURE DATA]                                         
TOTAL FM JAN 1     0    HIGHEST SLP M ON M                                      
DPTR FM NORMAL     0    LOWEST  SLP 29.49 ON 17                                 

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