Point Forecast Matrices
Issued by NWS Knoxville/Tri Cities, TN

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Point Forecast Matrices
National Weather Service Morristown TN
238 PM EST Sun Dec 17 2017

TNZ017-180900-
Tri Cities Airport-Sullivan TN
36.50N  82.41W Elev. 1536 ft
238 PM EST Sun Dec 17 2017

Date           12/17/17      Mon 12/18/17            Tue 12/19/17            Wed
EST 3hrly     16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07
UTC 3hrly     21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12

Min/Max                      38          55          39          59          45
Temp          41 40 39 39 38 39 44 52 54 48 45 43 41 40 46 55 58 53 50 49 47 46
Dewpt         33 34 36 37 37 37 41 44 44 43 42 41 40 37 41 43 44 45 45 46 45 45
RH            73 79 89 92 96 92 89 74 69 83 89 93 96 89 83 64 59 74 83 89 93 96
Wind Dir       N NW SW SW  S SW  W  W  W SW SW SW SW SW SW SW SW  W  W  W NW  N
Wind Spd       1  2  2  2  2  2  3  5  5  4  4  4  4  3  3  6  5  3  2  1  2  3
Clouds        OV OV OV OV OV OV OV B2 B2 B1 B2 B1 B1 SC SC SC B2 OV OV OV OV OV
PoP 12hr                     30          20          10          30          60
QPF 12hr                   0.03        0.01           0        0.04        0.20
Drizzle                AR AR AR
Rain shwrs     L  C  S        S  S                       S  S  C  L  L  L  L  L
Obvis                   F  F  F


Date           12/20  Thu 12/21/17  Fri 12/22/17  Sat 12/23/17  Sun 12/24/17
EST 6hrly     13 19   01 07 13 19   01 07 13 19   01 07 13 19   01 07 13 19
UTC 6hrly     18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Max/Min          54      35    55      36    56      42    54      38    52
Temp          52 46   40 36 51 47   41 37 52 50   46 43 52 47   42 39 49 47
Dewpt         43 39   34 33 37 36   34 34 41 42   42 43 46 42   39 38 42 39
PWind Dir        NE       E    SE      SE    SE       S     W      NW    NW
Wind Char        LT      LT    LT      LT    LT      LT    LT      LT    LT
Avg Clouds    OV OV   B2 SC SC SC   SC SC B1 B2   OV OV OV B2   B2 B2 B2 B2
PoP 12hr         70      30    10      10    30      70    60      20    40
Rain shwrs     L  C    C  C                S  C    L  L  L  C    S  S  C  C

$$

TNZ071-180900-
Knoxville McGhee Tyson Airport-Blount TN
35.80N  83.98W Elev. 979 ft
238 PM EST Sun Dec 17 2017

Date           12/17/17      Mon 12/18/17            Tue 12/19/17            Wed
EST 3hrly     16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07
UTC 3hrly     21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12

Min/Max                      41          57          43          60          50
Temp          43 42 42 42 41 42 47 54 56 51 48 47 45 44 49 57 59 56 54 53 52 50
Dewpt         37 38 39 39 39 40 43 47 47 46 45 43 42 40 44 47 49 49 50 51 50 50
RH            79 86 89 89 92 93 86 77 72 83 89 86 89 86 83 69 69 77 86 93 93100
Wind Dir       S SW SW SW SW  S  W  W SW SW SW SW SW SW SW SW SW SW  W  W  N NE
Wind Spd       2  3  3  3  2  2  3  5  5  5  4  4  4  4  4  4  4  3  2  3  4  6
Clouds        OV OV OV OV OV OV OV B1 B1 B1 B1 B1 B1 SC B1 B1 OV OV OV OV OV OV
PoP 12hr                     20          10           5          40          80
QPF 12hr                   0.03           0           0        0.12        0.50
Drizzle                AR AR AR
Rain shwrs     L  S  S                                   S  C  C  D  D  D  D  D
Obvis                   F  F  F


Date           12/20  Thu 12/21/17  Fri 12/22/17  Sat 12/23/17  Sun 12/24/17
EST 6hrly     13 19   01 07 13 19   01 07 13 19   01 07 13 19   01 07 13 19
UTC 6hrly     18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Max/Min          57      41    57      41    58      45    54      39    51
Temp          56 50   45 42 54 50   45 42 55 53   48 46 52 48   43 40 49 46
Dewpt         49 45   40 38 43 42   40 39 46 47   46 45 45 43   40 38 43 40
PWind Dir        NE      NE    SE       S     S      SW     W       N    NW
Wind Char        LT      LT    LT      LT    LT      GN    GN      LT    LT
Avg Clouds    OV OV   B2 B1 SC SC   SC B1 B1 B2   OV OV OV B2   B2 B2 B2 B2
PoP 12hr         90      30    10      10    30      70    50      20    50
Rain shwrs     D  D    C  C                S  C    L  L  C  C    S  S  C  C

$$

TNZ036-180900-
Oak Ridge-Anderson TN
36.00N  84.24W Elev. 913 ft
238 PM EST Sun Dec 17 2017

Date           12/17/17      Mon 12/18/17            Tue 12/19/17            Wed
EST 3hrly     16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07
UTC 3hrly     21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12

Min/Max                      40          57          43          59          49
Temp          44 42 42 41 41 41 46 54 56 51 48 47 45 44 49 56 58 55 53 52 51 49
Dewpt         37 38 38 39 38 39 42 46 47 46 45 43 42 40 44 45 48 49 49 49 49 49
RH            76 86 86 92 89 92 86 74 72 83 89 86 89 86 83 66 69 80 86 89 93100
Wind Dir      SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW  W NW NE NE
Wind Spd       2  2  2  2  1  1  2  3  4  3  3  3  3  2  2  3  3  1  1  1  1  4
Clouds        OV OV OV OV OV OV OV B2 B1 B1 B1 B1 B1 SC B1 B1 OV OV OV OV OV OV
PoP 12hr                     20          10           5          40          80
QPF 12hr                   0.01           0           0        0.10        0.48
Drizzle                AR AR AR
Rain shwrs     L  S                                      S  C  C  D  D  D  D  D
Obvis                   F  F  F


Date           12/20  Thu 12/21/17  Fri 12/22/17  Sat 12/23/17  Sun 12/24/17
EST 6hrly     13 19   01 07 13 19   01 07 13 19   01 07 13 19   01 07 13 19
UTC 6hrly     18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Max/Min          54      40    58      42    57      45    53      39    49
Temp          53 48   44 41 54 51   46 43 54 52   48 45 51 47   43 40 47 45
Dewpt         47 43   38 36 42 42   41 40 46 47   46 44 43 41   39 37 40 38
PWind Dir        NE      NE     W      SW     S      SW    NW       N    NW
Wind Char        LT      LT    LT      LT    LT      LT    LT      LT    LT
Avg Clouds    OV OV   B1 B1 SC SC   SC B1 B2 OV   OV OV OV B2   B2 B2 B2 B2
PoP 12hr         80      30    10      10    40      80    30      20    40
Rain shwrs     D  L    C  C                C  C    D  D  S  C       S  C  C

$$

TNZ099-180900-
Chattanooga Airport-Hamilton TN
35.03N  85.22W Elev. 688 ft
238 PM EST Sun Dec 17 2017

Date           12/17/17      Mon 12/18/17            Tue 12/19/17            Wed
EST 3hrly     16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07
UTC 3hrly     21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12

Min/Max                      42          59          46          61          54
Temp          45 44 43 43 42 43 48 56 58 54 51 49 48 47 51 58 61 58 57 56 55 54
Dewpt         38 40 40 40 39 40 43 46 46 46 45 44 44 43 46 49 52 53 53 54 54 54
RH            76 86 89 89 89 89 83 69 64 74 80 83 86 86 83 72 72 83 86 93 96100
Wind Dir      SW  S  S  S  S  S  S SW SW SW SW  S  S  S  S  S  S SW  S NE  E SE
Wind Spd       4  2  2  1  1  1  1  2  3  3  2  2  1  1  1  2  1  1  1  1  3  5
Clouds        OV OV OV OV OV OV OV B2 B1 B1 B1 B1 B1 B1 B1 OV OV OV OV OV OV OV
PoP 12hr                     20           5           5          60          90
QPF 12hr                   0.02           0           0        0.21        1.21
Drizzle                AR AR AR
Rain shwrs     L  S                                   S  C  C  L  D  D  D  D  D
Obvis                   F  F  F


Date           12/20  Thu 12/21/17  Fri 12/22/17  Sat 12/23/17  Sun 12/24/17
EST 6hrly     13 19   01 07 13 19   01 07 13 19   01 07 13 19   01 07 13 19
UTC 6hrly     18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Max/Min          61      43    59      45    58      46    54      40    52
Temp          60 54   48 44 56 53   49 46 55 53   49 46 52 48   44 41 50 48
Dewpt         50 47   43 41 43 43   43 42 46 49   48 46 45 44   42 39 41 40
PWind Dir        NE       N    SE       S     S      SW    NW      NW     N
Wind Char        LT      LT    LT      LT    GN      GN    LT      LT    LT
Avg Clouds    OV B2   B1 B1 SC B1   B1 B2 B2 OV   OV OV OV B2   B2 B2 B2 B2
PoP 12hr         90      30    10      10    50      80    50      30    50
Rain shwrs     D  D    C  C                C  C    D  D  C  C    C  C  C  C

$$

NCZ060-180900-
Tusquitee RAWS-Forestry-Cherokee NC
35.07N  84.12W Elev. 1600 ft
238 PM EST Sun Dec 17 2017

Date           12/17/17      Mon 12/18/17            Tue 12/19/17            Wed
EST 3hrly     16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07
UTC 3hrly     21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12

Min/Max                      40          60          42          63          53
Temp          40 40 40 40 40 41 47 56 59 53 49 47 45 43 50 59 62 59 57 56 55 53
Dewpt         34 40 40 39 38 40 45 48 47 45 42 40 39 39 43 48 51 53 53 55 54 53
RH            79100100 96 92 96 93 74 64 74 77 76 79 86 77 67 67 80 86 96 96100
Max/Min RH                  100          64          86          67         100
Wind Dir      SE SE SE SE SE  S SE  W  W  W  W  W  W SE NE SW SW SW  S  E  S  S
Wind Dir Deg  14 14 13 15 14 16 15 25 25 26 26 25 25 12  6 20 21 20 16  7 16 19
Wind Spd       3  3  3  2  1  1  2  3  4  3  2  2  1  1  1  1  1  1  0  0  2  2
Clouds        OV OV OV B2 B2 B2 B2 SC SC SC SC B1 B1 B1 B1 B1 OV OV OV OV OV OV
Clouds (%)    98 90 90 83 83 78 76 50 49 41 44 53 62 54 51 69 97 96 96 97 99100
Vsby           0  0  0  0  0  0  0  0
PoP 12hr                     30           5           5          50          80
QPF 12hr                   0.04           0           0        0.17        0.69
Drizzle                AR AR AR
Rain shwrs     L  C  S  S  S                             C  C  C  D  D  D  D  D
Obvis                   F  F  F
Haines                                    4                       3
LAL               1     1     1     1     1     1     1     1     1     1     1
Max Mix Hgt                            2700                    3500
AGL Mix Hgt                            1000                    1800
Max Vent Rt                            3500                   14400
T Wind Dir                               SW                       W
T Wind Spd                                3                       8
ADI                                       3                      13
Max LVORI                                 8                       4
Stability         B     D     F     B     B     F     F     B     D     D     D
Ceiling        3200  2400  3200 20800 20800 20800 11700  9800  3200  1700  1700
Sta Pres      28.07 28.07 28.07 28.07 28.09 28.09 28.09 28.07 28.04 27.98 27.82


Date           12/20  Thu 12/21/17  Fri 12/22/17  Sat 12/23/17  Sun 12/24/17
EST 6hrly     13 19   01 07 13 19   01 07 13 19   01 07 13 19   01 07 13 19
UTC 6hrly     18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Max/Min          60      41    57      40    59      45    56      42    54
Temp          59 52   46 42 54 50   44 41 55 53   49 46 54 50   46 43 52 49
Dewpt         53 49   45 40 42 41   40 39 46 47   47 46 50 48   45 43 44 43
PWind Dir        NE       E    SE      SE    SE       S     W       S    NW
Wind Char        LT      LT    LT      LT    LT      LT    LT      LT    LT
Avg Clouds    OV B2   B2 B1 SC SC   B1 B1 B2 B2   OV OV OV OV   B2 B2 OV OV
PoP 12hr         90      30    10      10    50      70    60      40    50
Rain shwrs     D  D    C  C                C  C    L  L  L  C    C  C  C  C

This is an experimental product for planning and review purposes only, and is
not to be substituted for an official fire weather spot forecast

$$




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