Explanation of the Preliminary 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


000
CXUS51 KLWX 010620
CF6DCA
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)

                                          STATION:   WASHINGTON NATIONAL DC
                                          MONTH:     SEPTEMBER
                                          YEAR:      2008
                                          LATITUDE:   38 50 N
                                          LONGITUDE:  77  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
                                          AVG MX 2MIN
DY MAX MIN AVG DEP HDD CDD  WTR  SNW DPTH SPD SPD DIR MIN PSBL S-S WX    SPD DR
================================================================================

 1  89  65  77   2   0  12 0.00  0.0    0  4.5 15  60   M    M   1        22  60
 2  92  65  79   4   0  14 0.00  0.0    0  4.6 12 340   M    M   0         M  M
 3  95  69  82   8   0  17 0.00  0.0    0  4.4 13 340   M    M   2        17 350
 4  95  74  85  11   0  20 0.00  0.0    0  7.0 15 170   M    M   4        18 170
 5  90  73  82   8   0  17 0.40  0.0    0  8.4 17 130   M    M   5 1      25 140
 6  78  73  76   2   0  11 3.50  0.0    0 12.0 29 350   M    M   9 1      41 350
 7  85  66  76   3   0  11 0.00  0.0    0  6.3 16 300   M    M   1        23 290
 8  87  69  78   5   0  13 0.00  0.0    0  5.1 13 170   M    M   6        15 170
 9  81  72  77   4   0  12 0.18  0.0    0  7.6  8 320   M    M   9 8       8 320
10  79  68  74   2   0   9    T  0.0    0  8.7 17  30   M    M   8        23  30
11  80  68  74   2   0   9 0.00  0.0    0  6.9 13 150   M    M   9        17 160
12  81  70  76   4   0  11 0.03  0.0    0  8.8 18 200   M    M  10        24 210
13  93  74  84  12   0  19 0.00  0.0    0  4.5 14 350   M    M   7        16 300
14  92  75  84  13   0  19 0.00  0.0    0 11.0 21 180   M    M   7 18     29 190
15  86  73  80   9   0  15 0.00  0.0    0 12.4 25 320   M    M   6        32 330
16  76  65  71   0   0   6 0.00  0.0    0  8.8 20  10   M    M   8        30  10
17  79  61  70   0   0   5 0.00  0.0    0  4.3 10 330   M    M   6        14 320
18  83  61  72   2   0   7 0.00  0.0    0  8.5 16  20   M    M   3        20  20
19  74  61  68  -2   0   3 0.00  0.0    0  9.6 17 100   M    M   6        24 100
20  75  56  66  -3   0   1 0.00  0.0    0  3.9 12  20   M    M   4 8      15  20
21  82  56  69   0   0   4 0.00  0.0    0  2.9  9 180   M    M   4 8      12 170
22  83  62  73   5   0   8 0.00  0.0    0  6.7 14  50   M    M   M 18     17  40
23  76  62  69   1   0   4 0.00  0.0    0  9.8 20  60   M    M   0 8      23  30
24  74  57  66  -2   0   1 0.00  0.0    0 11.3 22  50   M    M   6        26  60
25  66  59  63  -4   2   0 0.22  0.0    0 17.0 24  40   M    M   9 1      32  40
26  73  62  68   1   0   3 0.72  0.0    0 12.4 23  40   M    M  10 138    28  40
27  80  70  75   9   0  10 0.27  0.0    0  5.0 15 110   M    M   9 13     17 110
28  80  69  75   9   0  10 0.65  0.0    0  3.7 20 360   M    M   7 1      23 360
29  78  64  71   5   0   6 0.00  0.0    0  7.0 17 340   M    M   5        22 350
30  75  61  68   3   0   3 0.44  0.0    0  4.5 23 280   M    M   6 138    31 270
================================================================================
SM 2457 1980         2 280  6.41     0.0 227.6          M      167
================================================================================
AV 81.9 66.0                               7.6 FASTST   M    M   6    MAX(MPH)
                                 MISC ---->    29   M                 41    M
================================================================================
NOTES:
# LAST OF SEVERAL OCCURRENCES

COLUMN 17 PEAK WIND IN M.P.H.

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

                                          STATION:  WASHINGTON NATIONAL DC
                                          MONTH:    SEPTEMBER
                                          YEAR:     2008
                                          LATITUDE:   38 50 N
                                          LONGITUDE:  77  2 W

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

AVERAGE MONTHLY: 73.9   TOTAL FOR MONTH:   6.41    1 = FOG OR MIST
DPTR FM NORMAL:   3.4   DPTR FM NORMAL:    2.62    2 = FOG REDUCING VISIBILITY
HIGHEST:    95 ON  4, 3 GRTST 24HR  3.90 ON  5- 6      TO 1/4 MILE OR LESS
LOWEST:     56 ON 21,20                            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:   9
MAX 90 OR ABOVE:   6    0.10 INCH OR MORE:   8
MIN 32 OR BELOW:   0    0.50 INCH OR MORE:   3
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   1

[HDD (BASE 65) ]
TOTAL THIS MO.     2    CLEAR  (SCALE 0-3)   5
DPTR FM NORMAL   -17    PTCLDY (SCALE 4-7)  17
TOTAL FM JUL 1     2    CLOUDY (SCALE 8-10)  7
DPTR FM NORMAL   -24

[CDD (BASE 65) ]
TOTAL THIS MO.   280
DPTR FM NORMAL    80    [PRESSURE DATA]
TOTAL FM JAN 1  1669    HIGHEST SLP M ON M
DPTR FM NORMAL   170    LOWEST  SLP 29.67 ON 14

[REMARKS]
#FINAL-09-08#