National Weather Service United States Department of Commerce

Storm Impacting the Northwest U.S.; Fire Weather Conditions in Southern California; Severe Weather in the South

A Pacific storm is bringing areas of low elevation rain, moderate to heavy mountain snow, and high winds to the Northwest. Strong Santa Ana winds and very dry conditions are producing elevated to critical fire weather conditions in southern California. Isolated strong to severe thunderstorms are possible through early Wednesday morning across parts of northeast Texas into western Tennessee. Read More >

The following are the September summaries for Jackson and London as well as the

September Local Climatological Data reports for Jackson and London:

 

...THE JACKSON KY CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2024...

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1981 TO 2024

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             98   09/10/2019
 LOW              34   09/24/1989
HIGHEST           92   09/20         89       3       87  09/03
                                                          09/04
                                                          09/06
LOWEST            47   09/09         42       5       51  09/14
AVG. MAXIMUM    80.1               79.0     1.1     78.9
AVG. MINIMUM    61.3               59.1     2.2     60.2
MEAN            70.7               69.1     1.6     69.5
DAYS MAX >= 90     3                2.1     0.9        0
DAYS MAX <= 32     0                0.0     0.0        0
DAYS MIN <= 32     0                0.0     0.0        0
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        9.17   2018
 MINIMUM           T   2019
TOTALS          4.49               3.42    1.07     1.83
DAILY AVG.      0.15               0.11    0.04     0.06
DAYS >= .01       13                8.2     4.8        6
DAYS >= .10        7                5.6     1.4        4
DAYS >= .50        3                2.2     0.8        2
DAYS >= 1.00       2                1.0     1.0        0
GREATEST
 24 HR. TOTAL   1.75   09/26 TO 09/27               1.21

SNOWFALL (INCHES)
RECORDS
 TOTAL            MM   MM
TOTALS           0.0                0.0     0.0      0.0
SINCE 7/1          T                0.0     0.0        T
SNOWDEPTH AVG.     0                                   0
DAYS >= 1.0        0                0.0     0.0        0
GREATEST
 SNOW DEPTH        0                                   0
 24 HR TOTAL       0                                   0

DEGREE DAYS
HEATING TOTAL      8                 39     -31        6
 SINCE 7/1         9                 40     -31        7
COOLING TOTAL    189                161      28      149
 SINCE 1/1      1431               1195     236     1056
................................................................

WIND (MPH)
AVERAGE WIND SPEED              1.6
HIGHEST WIND SPEED/DIRECTION    30/190    DATE  09/27
HIGHEST GUST SPEED/DIRECTION    56/170    DATE  09/27

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.34
NUMBER OF DAYS FAIR           17
NUMBER OF DAYS PC              8
NUMBER OF DAYS CLOUDY          5

AVERAGE RH (PERCENT)     69

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              2     MIXED PRECIP               0
HEAVY RAIN                5     RAIN                       9
LIGHT RAIN               14     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      15     FOG W/VIS <= 1/4 MILE      7
HAZE                      2

-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.

$$

 

CF6JKL
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)

                                          STATION:   JACKSON KY
                                          MONTH:     SEPTEMBER
                                          YEAR:      2024
                                          LATITUDE:   37 35 N
                                          LONGITUDE:  83 19 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  80  69  75   2   0  10    T  0.0    0  0.0  6 310   M    M   7 12      8 250
 2  79  62  71  -2   0   6 0.00  0.0    0  0.9  6 340   M    M   1 12     12  80
 3  79  55  67  -6   0   2 0.00  0.0    0  1.6  8 140   M    M   0        13 130
 4  82  61  72   0   0   7 0.00  0.0    0  0.9  6 140   M    M   0        11  80
 5  85  59  72   0   0   7 0.00  0.0    0  1.8  8 320   M    M   0        12 330
 6  87  60  74   2   0   9 0.06  0.0    0  2.3  9 340   M    M   1 1      17 310
 7  71  56  64  -8   1   0 0.14  0.0    0  3.4 10 340   M    M   5 1      18 320
 8  71  48  60 -11   5   0 0.00  0.0    0  0.4  7 140   M    M   0 8      12 120
 9  78  47  63  -8   2   0 0.00  0.0    0  1.0  7 160   M    M   0        12 160
10  82  51  67  -4   0   2 0.00  0.0    0  0.2  8 130   M    M   0        13 140
11  87  55  71   0   0   6 0.00  0.0    0  2.0  8 140   M    M   0        13 150
12  80  62  71   1   0   6 0.00  0.0    0  1.9  8 140   M    M   0        14 130
13  80  65  73   3   0   8 0.01  0.0    0  1.4  7 100   M    M   4        15  70
14  86  66  76   6   0  11 0.00  0.0    0  2.7 12 120   M    M   0        19 120
15  85  65  75   6   0  10 0.00  0.0    0  2.4  8 140   M    M   0        18  80
16  83  62  73   4   0   8 0.00  0.0    0  2.4 12 140   M    M   0        19 130
17  72  61  67  -2   0   2 0.08  0.0    0  0.0  5 110   M    M   9 1      10  70
18  83  65  74   6   0   9 0.00  0.0    0  0.9  8 310   M    M   5        11 330
19  90  64  77   9   0  12 0.00  0.0    0  1.4 12 300   M    M   3 12     19 310
20  92  63  78  10   0  13 0.00  0.0    0  1.1  9 310   M    M   1        14 190
21  80  67  74   7   0   9 0.03  0.0    0  0.4  5 280   M    M   2         8 230
22  91  66  79  12   0  14 0.00  0.0    0  1.5  8 190   M    M   1 18     17 160
23  86  65  76   9   0  11 0.30  0.0    0  1.7 10 310   M    M   6 123    16 310
24  78  65  72   6   0   7 0.69  0.0    0  2.5 15 310   M    M   5 13     24 340
25  71  62  67   1   0   2 0.45  0.0    0  1.3  7 140   M    M   7 12     13 180
26  69  62  66   0   0   1 1.02  0.0    0  1.8  7  70   M    M  10 12     16  80
27  78  67  73   8   0   8 1.37  0.0    0  7.6 30 190   M    M  10 1      56 170
28  73  63  68   3   0   3 0.18  0.0    0  2.0  8 130   M    M  10 1      15 120
29  73  63  68   3   0   3 0.08  0.0    0  0.9  8 170   M    M   9 1      11 190
30  73  62  68   4   0   3 0.08  0.0    0  0.3  6 170   M    M   6 12      7 180
================================================================================
SM 2404 1838         8 189  4.49  0.0     48.7          M      102
================================================================================
AV 80.1 61.3                               1.6 FASTST   M    M   3    MAX(MPH)
                                 MISC ---->    30 190                 56 170
================================================================================
NOTES:
# LAST OF SEVERAL OCCURRENCES

COLUMN 17 PEAK WIND IN M.P.H.

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

                                          STATION:   JACKSON KY
                                          MONTH:     SEPTEMBER
                                          YEAR:      2024
                                          LATITUDE:   37 35 N
                                          LONGITUDE:  83 19 W

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

AVERAGE MONTHLY: 70.7   TOTAL FOR MONTH:   4.49    1 = FOG OR MIST
DPTR FM NORMAL:   1.6   DPTR FM NORMAL:    1.07    2 = FOG REDUCING VISIBILITY
HIGHEST:    92 ON 20    GRTST 24HR  1.38 ON 26-27      TO 1/4 MILE OR LESS
LOWEST:     47 ON  9                               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:  13
MAX 90 OR ABOVE:   3    0.10 INCH OR MORE:   7
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.     8    CLEAR  (SCALE 0-3)  17
DPTR FM NORMAL   -31    PTCLDY (SCALE 4-7)   8
TOTAL FM JUL 1     9    CLOUDY (SCALE 8-10)  5
DPTR FM NORMAL   -31

[CDD (BASE 65) ]
TOTAL THIS MO.   189
DPTR FM NORMAL    28    [PRESSURE DATA]
TOTAL FM JAN 1  1431    HIGHEST SLP 30.31 ON  4
DPTR FM NORMAL   236    LOWEST  SLP 29.07 ON 27

[REMARKS]
#FINAL-09-24#

 

...THE LONDON KY CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2024...

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1954 TO 2024

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             97   09/05/2007
 LOW              32   09/24/1983
HIGHEST           89   09/22         MM      MM       89  09/04
                                                          09/05
LOWEST            45   09/09         MM      MM       50  09/18
AVG. MAXIMUM    79.2               80.0    -0.8     81.4
AVG. MINIMUM    59.9               57.6     2.3     57.6
MEAN            69.5               68.8     0.7     69.5
DAYS MAX >= 90     0                3.0    -3.0        0
DAYS MAX <= 32     0                0.0     0.0        0
DAYS MIN <= 32     0                0.0     0.0        0
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        8.50   2004
 MINIMUM        0.11   2019
TOTALS          4.01               3.55    0.46     1.70
DAILY AVG.      0.13               0.12    0.01     0.06
DAYS >= .01       13                8.3     4.7        7
DAYS >= .10        9                5.5     3.5        4
DAYS >= .50        3                2.1     0.9        1
DAYS >= 1.00       0                1.0    -1.0        1
GREATEST
 24 HR. TOTAL   1.14   09/26 TO 09/27               1.34

SNOWFALL (INCHES)
RECORDS
 TOTAL            MM   MM
TOTALS            MM                 MM      MM       MM
SINCE 7/1         MM                 MM      MM       MM
SNOWDEPTH AVG.    MM                                  MM
DAYS >= 1.0       MM                 MM      MM       MM
GREATEST
 SNOW DEPTH       MM                                  MM
 24 HR TOTAL      MM                                  MM

DEGREE DAYS
HEATING TOTAL     14                 38     -24        3
 SINCE 7/1        15                 37     -22        3
COOLING TOTAL    156                152       4      147
 SINCE 1/1      1297               1192     105     1041
................................................................

WIND (MPH)
AVERAGE WIND SPEED              3.8
HIGHEST WIND SPEED/DIRECTION    29/040    DATE  09/27
HIGHEST GUST SPEED/DIRECTION    49/030    DATE  09/27

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.38
NUMBER OF DAYS FAIR           15
NUMBER OF DAYS PC              9
NUMBER OF DAYS CLOUDY          6

AVERAGE RH (PERCENT)     76

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              4     MIXED PRECIP               0
HEAVY RAIN                4     RAIN                      10
LIGHT RAIN               14     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      23     FOG W/VIS <= 1/4 MILE      2
HAZE                      0

-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.

$$

 

CF6LOZ
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)

                                          STATION:   LONDON KY
                                          MONTH:     SEPTEMBER
                                          YEAR:      2024
                                          LATITUDE:   37  4 N
                                          LONGITUDE:  84  5 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  76  70  73   0   0   8 0.14    M    M  3.0  8 290   M    M   7 13     14 250
 2  80  60  70  -3   0   5 0.00    M    M  6.3 14  10   M    M   5 1      22  10
 3  79  55  67  -6   0   2 0.00    M    M  4.1 10  70   M    M   1        17  60
 4  80  62  71  -1   0   6 0.00    M    M  1.9  7 120   M    M   1 1      12 140
 5  84  57  71  -1   0   6 0.00    M    M  1.2  8  70   M    M   1 12     12  50
 6  85  58  72   0   0   7 0.00    M    M  3.9 15 330   M    M   1 1      24 350
 7  71  51  61 -11   4   0 0.04    M    M  7.6 20 350   M    M   5        27 350
 8  72  46  59 -12   6   0 0.00    M    M  3.6 13  40   M    M   0        20  20
 9  77  45  61 -10   4   0 0.00    M    M  1.5  8  40   M    M   0 1      11  50
10  83  47  65  -6   0   0 0.00    M    M  1.6  8  30   M    M   0 1      11 100
11  85  51  68  -2   0   3 0.00    M    M  1.4  9  90   M    M   0 1      16 150
12  75  58  67  -3   0   2 0.03    M    M  3.6 12 110   M    M   1        17 130
13  80  62  71   1   0   6 0.88    M    M  6.0 13  70   M    M   7 1      19  80
14  84  64  74   4   0   9 0.00    M    M  5.7 15 100   M    M   1        23 110
15  83  62  73   4   0   8 0.00    M    M  4.9 13 130   M    M   1        20 120
16  83  61  72   3   0   7 0.00    M    M  4.0 13  50   M    M   0        18  20
17  71  60  66  -2   0   1 0.39    M    M  6.3 15  20   M    M   9 1      23  50
18  80  65  73   5   0   8 0.00    M    M  2.5 10  30   M    M   7 1      14  30
19  86  63  75   7   0  10 0.00    M    M  1.2 12  30   M    M   4 12     15  30
20  87  61  74   7   0   9 0.00    M    M  1.8 12 260   M    M   0 1      14 250
21  87  62  75   8   0  10    T    M    M  1.9  9 270   M    M   1 1      14 270
22  89  64  77  10   0  12    T    M    M  3.7 20 180   M    M   2 13     29 170
23  85  66  76  10   0  11 0.49    M    M  2.5 16 210   M    M   5 13     29 230
24  84  65  75   9   0  10 0.21    M    M  3.6 18 290   M    M   4 13     28 300
25  71  65  68   2   0   3 0.20    M    M  2.0 10 310   M    M   7 1      15 170
26  69  63  66   1   0   1 0.55    M    M  4.9 13  80   M    M  10 1      19  80
27  74  64  69   4   0   4 0.89    M    M 12.2 29  40   M    M  10 1      49  30
28  69  63  66   2   0   1 0.16    M    M  6.6 15 140   M    M  10 1      24 140
29  71  63  67   3   0   2 0.02    M    M  2.7  9 190   M    M  10 1      13 140
30  76  63  70   6   0   5 0.01    M    M  1.6 10 270   M    M   8 1      14 270
================================================================================
SM 2376 1796        14 156  4.01    M    113.8          M      118
================================================================================
AV 79.2 59.9                               3.8 FASTST   M    M   4    MAX(MPH)
                                 MISC ---->    29  40                 49  30
================================================================================
NOTES:
# LAST OF SEVERAL OCCURRENCES

COLUMN 17 PEAK WIND IN M.P.H.

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

                                          STATION:   LONDON KY
                                          MONTH:     SEPTEMBER
                                          YEAR:      2024
                                          LATITUDE:   37  4 N
                                          LONGITUDE:  84  5 W

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

AVERAGE MONTHLY: 69.5   TOTAL FOR MONTH:   4.01    1 = FOG OR MIST
DPTR FM NORMAL:   0.7   DPTR FM NORMAL:    0.46    2 = FOG REDUCING VISIBILITY
HIGHEST:    89 ON 22    GRTST 24HR  1.14 ON 26-27      TO 1/4 MILE OR LESS
LOWEST:     45 ON  9                               3 = THUNDER
                        SNOW, ICE PELLETS, HAIL    4 = ICE PELLETS
                        TOTAL MONTH:  M            5 = HAIL
                        GRTST 24HR    M  ON   M    6 = FREEZING RAIN OR DRIZZLE
                        GRTST DEPTH:  M  ON   M    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:  13
MAX 90 OR ABOVE:   0    0.10 INCH OR MORE:   9
MIN 32 OR BELOW:   0    0.50 INCH OR MORE:   3
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   0

[HDD (BASE 65) ]
TOTAL THIS MO.    14    CLEAR  (SCALE 0-3)  15
DPTR FM NORMAL   -24    PTCLDY (SCALE 4-7)  10
TOTAL FM JUL 1    15    CLOUDY (SCALE 8-10)  5
DPTR FM NORMAL   -22

[CDD (BASE 65) ]
TOTAL THIS MO.   156
DPTR FM NORMAL     4    [PRESSURE DATA]
TOTAL FM JAN 1  1297    HIGHEST SLP 30.30 ON  4
DPTR FM NORMAL   105    LOWEST  SLP 29.05 ON 27

[REMARKS]
#FINAL-09-24#