000
CXUS51 KBOX 011200
CF6BOS
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)

                                          STATION:   BOSTON MA
                                          MONTH:     APRIL
                                          YEAR:      2009
                                          LATITUDE:   42 22 N
                                          LONGITUDE:  71  2 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  45  37  41  -3  24   0 0.09  0.0    0  9.0 23 110   M    M   7 1      26 110
 2  51  40  46   2  19   0 0.02  0.0    0  5.3 13 120   M    M   9 12     15 130
 3  56  41  49   5  16   0 0.72    M    0  8.6 20  80   M    M  10 12     23  90
 4  53  41  47   2  18   0    T  0.0    0 19.0 32 280   M    M   9        43 280
 5  59  41  50   5  15   0 0.00  0.0    0 14.9 25 270   M    M   5        32 270
 6  51  39  45   0  20   0 1.17    M    M 11.0 29 100   M    M   8 1      37  90
 7  53  37  45  -1  20   0    T    M    0 12.7 25 240   M    M   8 1      33 290
 8  47  35  41  -5  24   0 0.00  0.0    M 13.2 25 260   M    M   7        31 230
 9  61  37  49   3  16   0 0.00  0.0    M 12.7 22 220   M    M   3        29 240
10  66  40  53   6  12   0 0.15    M    M  8.9 26 230   M    M   6 1      33 230
11  46  38  42  -5  23   0 0.49  0.0    0 14.2 24  20   M    M  10 1      29  10
12  44  34  39  -8  26   0 0.00  0.0    M 18.3 31 330   M    M   4        38 330
13  54  34  44  -3  21   0 0.00  0.0    0 15.0 26 300   M    M   1        35 270
14  52  39  46  -2  19   0 0.00  0.0    0  9.2 20 110   M    M   5        23 120
15  50  38  44  -4  21   0 0.00  0.0    0 10.9 23  50   M    M   3        30  50
16  49  35  42  -6  23   0 0.00  0.0    0 11.3 20  70   M    M   2        24  40
17  70  41  56   7   9   0 0.00  0.0    0 11.9 21 300   M    M   3        28 290
18  65  46  56   7   9   0 0.07  0.0    0  8.5 18 100   M    M   7 1      24 260
19  51  41  46  -3  19   0 0.04  0.0    0 10.7 24  40   M    M   5 1      28  40
20  48  38  43  -7  22   0 0.09  0.0    0 13.8 24 160   M    M   8 1      38 160
21  58  43  51   1  14   0 1.13  0.0    0  9.9 23  90   M    M  10 12     29 110
22  62  47  55   5  10   0 0.09  0.0    0 10.4 18 260   M    M   9 1      24 250
23  57  45  51   0  14   0 0.07  0.0    0 17.7 28 260   M    M   6 1      38 270
24  70  46  58   7   7   0 0.00  0.0    0 11.5 23 290   M    M   2        30 290
25  83  50  67  16   0   2 0.00  0.0    0 10.8 18 230   M    M   3        24 230
26  87  52  70  18   0   5 0.00  0.0    0 10.0 24  60   M    M   7        28  60
27  64  50  57   5   8   0 0.00  0.0    0  8.2 14 220   M    M   4 8      17 220
28  93  59  76  24   0  11    T  0.0    0 15.5 28 320   M    M   5 8      35 320
29  59  48  54   1  11   0    T  0.0    0 12.1 21 330   M    M   5        25 330
30  70  46  58   5   7   0    T  0.0    0 11.0 23 200   M    M   6        30 200
================================================================================
SM 1774 1258       447  18  4.13     0.0 356.2          M      177
================================================================================
AV 59.1 41.9                              11.9 FASTST   M    M   6    MAX(MPH)
                                 MISC ---->  # 32 280               # 43  280
================================================================================
NOTES:
# LAST OF SEVERAL OCCURRENCES

COLUMN 17 PEAK WIND IN M.P.H.

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

                                          STATION:  BOSTON MA
                                          MONTH:    APRIL
                                          YEAR:     2009
                                          LATITUDE:   42 22 N
                                          LONGITUDE:  71  2 W

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

AVERAGE MONTHLY: 50.5   TOTAL FOR MONTH:   4.13    1 = FOG OR MIST
DPTR FM NORMAL:   2.2   DPTR FM NORMAL:    0.53    2 = FOG REDUCING VISIBILITY
HIGHEST:    93 ON 28    GRTST 24HR  1.21 ON 20-21      TO 1/4 MILE OR LESS
LOWEST:     34 ON 13,12                            3 = THUNDER
                        SNOW, ICE PELLETS, HAIL    4 = ICE PELLETS
                        TOTAL MONTH:   0.0 INCH    5 = HAIL
                        GRTST 24HR     0.0         6 = FREEZING RAIN OR DRIZZLE
                        GRTST DEPTH:   0           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:   0    0.01 INCH OR MORE:  12
MAX 90 OR ABOVE:   1    0.10 INCH OR MORE:   5
MIN 32 OR BELOW:   0    0.50 INCH OR MORE:   3
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   2

[HDD (BASE 65) ]
TOTAL THIS MO.   447    CLEAR  (SCALE 0-3)   5
DPTR FM NORMAL   -56    PTCLDY (SCALE 4-7)  18
TOTAL FM JUL 1  5401    CLOUDY (SCALE 8-10)  7
DPTR FM NORMAL    52

[CDD (BASE 65) ]
TOTAL THIS MO.    18
DPTR FM NORMAL    14    [PRESSURE DATA]
TOTAL FM JAN 1    18    HIGHEST SLP 30.51 ON 29
DPTR FM NORMAL    13    LOWEST  SLP 29.14 ON  7

[REMARKS]
#FINAL-04-09#