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

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Point Forecast Matrices
National Weather Service Morristown TN
257 AM EST Wed Feb 21 2018

TNZ017-212100-
Tri Cities Airport-Sullivan TN
36.50N  82.41W Elev. 1536 ft
257 AM EST Wed Feb 21 2018

Date             Wed 02/21/18            Thu 02/22/18            Fri 02/23/18
EST 3hrly     04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19
UTC 3hrly     09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00

Max/Min                      76          56          73          54          77
Temp          56 56 63 71 74 69 65 62 59 57 63 69 72 67 62 59 57 55 63 72 76 70
Dewpt         53 55 58 59 59 58 59 58 58 57 57 59 59 58 56 54 54 54 54 54 53 52
RH            90 96 84 66 59 68 81 87 96100 81 70 64 73 81 83 90 96 72 53 45 53
Wind Dir      SE  S  S SW SW  S  S SE  S  S  S SW SW SW  S  S SE  E  S SW SW SW
Wind Spd       3  2  2  8  6  2  2  2  2  3  3  9  6  2  0  0  1  1  4  9  8  5
Clouds        B1 B1 B2 B2 B2 B2 B1 B2 B2 B2 B1 B1 B1 B2 B1 B1 B1 B1 B1 B1 B1 B1
PoP 12hr                     50          30          50          30          10
QPF 12hr                   0.09        0.07        0.05        0.01           0
Rain shwrs           S  C  C  C  C  C  C  C  C  C  C  C  C                    S
Tstms                   S  S  S  S  S  S  S  S  S  S


Date          Sat 02/24/18  Sun 02/25/18  Mon 02/26/18  Tue 02/27/18
EST 6hrly     01 07 13 19   01 07 13 19   01 07 13 19   01 07 13 19
UTC 6hrly     06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Min/Max          54    73      56    67      44    60      40    60
Temp          60 55 69 68   61 57 64 60   50 45 56 54   46 41 55 53
Dewpt         56 55 59 55   57 57 53 48   45 43 42 41   39 37 37 36
PWind Dir         S    SW       S    SW      NW    NW       E     N
Wind Char        LT    LT      LT    GN      LT    LT      LT    LT
Avg Clouds    B1 B1 B2 B2   OV OV OV B1   B1 B2 B2 B1   SC FW SC SC
PoP 12hr         20    30      70    70      30    30      10    10
Rain shwrs     S  S  C  C    L  L  L       C  C  C  C
Tstms                S  S    S  S

$$

TNZ071-212100-
Knoxville McGhee Tyson Airport-Blount TN
35.80N  83.98W Elev. 979 ft
257 AM EST Wed Feb 21 2018

Date             Wed 02/21/18            Thu 02/22/18            Fri 02/23/18
EST 3hrly     04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19
UTC 3hrly     09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00

Max/Min                      76          60          76          59          78
Temp          63 61 66 73 75 71 67 65 63 61 66 72 75 71 66 64 62 60 66 74 77 72
Dewpt         58 59 61 61 60 59 59 59 59 58 61 61 61 60 57 58 57 58 58 57 57 56
RH            84 93 84 66 60 66 75 81 87 90 84 68 62 68 73 81 84 93 75 55 50 57
Wind Dir      SW SW SW SW SW SW  S  S SW SW SW SW SW SW SW SW SW SW SW SW SW SW
Wind Spd       6  5  6 10 10  4  3  4  6  5  6  9  9  4  3  3  3  3  8 13 11  8
Clouds        B2 B2 B1 B2 B2 B2 B2 B2 B1 B2 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1
PoP 12hr                     50          40          50          20          10
QPF 12hr                   0.11        0.14        0.05        0.01           0
Rain shwrs     S     S  C  C  C  C  C  C  C  C  C  C  S  S                    S
Tstms                   S  S  S  S  S  S  S  S  S  S


Date          Sat 02/24/18  Sun 02/25/18  Mon 02/26/18  Tue 02/27/18
EST 6hrly     01 07 13 19   01 07 13 19   01 07 13 19   01 07 13 19
UTC 6hrly     06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Min/Max          58    74      58    67      47    63      43    62
Temp          64 59 70 69   62 59 65 61   53 48 59 57   49 44 58 55
Dewpt         58 57 60 58   59 57 55 50   47 45 47 44   42 40 42 40
PWind Dir        SW    SW      SW    SW       N     N      NE    NE
Wind Char        LT    GN      GN    GN      LT    LT      LT    LT
Avg Clouds    B1 B1 B2 B2   OV OV OV B1   B1 B2 B2 B1   SC SC SC SC
PoP 12hr         20    30      70    50      40    30      10    10
Rain shwrs     S  S  C  C    L  L  C       C  C  C  C
Tstms                S  S    S  S

$$

TNZ036-212100-
Oak Ridge-Anderson TN
36.00N  84.24W Elev. 913 ft
257 AM EST Wed Feb 21 2018

Date             Wed 02/21/18            Thu 02/22/18            Fri 02/23/18
EST 3hrly     04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19
UTC 3hrly     09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00

Max/Min                      76          60          74          59          78
Temp          62 61 66 73 75 71 67 64 63 61 65 71 73 69 66 63 62 60 66 74 77 72
Dewpt         57 59 60 61 61 59 60 60 59 59 60 62 61 60 59 58 57 58 58 57 57 56
RH            84 93 81 66 62 66 78 87 87 93 84 73 66 73 78 84 84 93 75 55 50 57
Wind Dir      SW SW SW SW SW SW  S  S  S SW SW SW SW SW SW SW SW SW SW SW SW SW
Wind Spd       3  3  3  6  5  1  2  2  3  3  4  5  5  2  1  1  1  1  4  8  6  3
Clouds        B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 B1 B1 B1 B1 B1 B1 B1 B1
PoP 12hr                     50          60          60          30          10
QPF 12hr                   0.10        0.16        0.11        0.01           0
Rain shwrs     S  S  C  C  C  L  L  L  L  L  L  L  L  C  C                    S
Tstms                   S  S  S  S  S  S  S  S  S  S


Date          Sat 02/24/18  Sun 02/25/18  Mon 02/26/18  Tue 02/27/18
EST 6hrly     01 07 13 19   01 07 13 19   01 07 13 19   01 07 13 19
UTC 6hrly     06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Min/Max          58    74      57    66      46    62      43    62
Temp          64 59 70 69   62 58 64 60   52 47 58 56   48 44 58 55
Dewpt         59 58 60 60   60 56 53 48   45 43 45 43   41 40 41 39
PWind Dir        SW    SW      SW     W       N     N      NE    NE
Wind Char        LT    GN      GN    GN      LT    LT      LT    LT
Avg Clouds    B1 B2 OV B2   OV OV OV B1   B1 B2 B2 B1   SC SC SC SC
PoP 12hr         20    40      70    50      30    20      10    10
Rain shwrs     S  S  C  C    L  L  C       C  C  S  S
Tstms                S  S    S  S

$$

TNZ099-212100-
Chattanooga Airport-Hamilton TN
35.03N  85.22W Elev. 688 ft
257 AM EST Wed Feb 21 2018

Date             Wed 02/21/18            Thu 02/22/18            Fri 02/23/18
EST 3hrly     04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19
UTC 3hrly     09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00

Max/Min                      78          62          78          59          79
Temp          62 62 67 74 77 73 69 66 65 63 68 74 77 72 67 64 62 60 67 74 78 73
Dewpt         59 61 62 62 61 61 62 62 61 61 62 62 61 60 61 60 60 60 60 58 57 57
RH            90 97 84 66 58 66 78 87 87 93 81 66 58 66 81 87 93100 78 57 48 57
Wind Dir       S  S  S  S  S SE  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S
Wind Spd       6  5  6  8  6  4  3  4  5  4  5  8  6  4  1  2  2  3  5  9  8  5
Clouds        B2 B2 B2 B2 B2 B2 OV B2 B2 B2 B2 B2 B1 SC B1 SC B1 B1 B1 B1 B1 B1
PoP 12hr                     50          50          30          20          10
QPF 12hr                   0.11        0.12        0.02        0.01           0
Rain shwrs     C  C  C  C  C  C  C  C  C  C  C  C  C  S  S                    S
Tstms                   S  S  S  S  S  S  S  S  S  S


Date          Sat 02/24/18  Sun 02/25/18  Mon 02/26/18  Tue 02/27/18
EST 6hrly     01 07 13 19   01 07 13 19   01 07 13 19   01 07 13 19
UTC 6hrly     06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Min/Max          59    74      59    67      49    64      45    64
Temp          65 60 71 69   63 59 65 61   54 50 61 58   50 46 60 57
Dewpt         58 57 58 59   59 56 52 48   48 46 45 44   43 41 41 40
PWind Dir         S     S      SW     W       N     N      NE     E
Wind Char        LT    LT      GN    LT      LT    LT      LT    LT
Avg Clouds    B1 B2 B2 B2   OV OV OV B1   B2 B2 B2 B1   SC SC SC SC
PoP 12hr         20    40      70    50      50    30      10    10
Rain shwrs     S  S  C  C    L  L  C       C  C  C  C
Tstms                S  S    S  S

$$

NCZ060-212100-
Tusquitee RAWS-Forestry-Cherokee NC
35.07N  84.12W Elev. 1600 ft
257 AM EST Wed Feb 21 2018

Date             Wed 02/21/18            Thu 02/22/18            Fri 02/23/18
EST 3hrly     04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19
UTC 3hrly     09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00

Max/Min                      74          59          75          56          73
Temp          62 62 66 71 73 69 66 63 62 60 65 71 74 69 64 61 59 57 62 69 72 68
Dewpt         60 60 63 63 62 61 61 62 61 60 62 61 61 59 59 59 58 57 58 58 57 57
RH            93 93 90 76 68 76 84 97 97100 90 71 64 70 84 93 96100 87 68 59 68
Min/Max RH                   66         100          64         100          59
Wind Dir      SW  S  S SW  S SE SE SE  S  S  S SW SW  S NE  E SE  S SW SW SW  S
Wind Dir Deg  21 18 18 20 19 15 15 15 17 18 18 20 20 17  5  9 15 18 20 23 21 19
Wind Spd       2  2  3  5  4  2  2  3  3  3  3  5  5  2  2  1  1  1  3  5  4  2
Clouds        B2 B2 B2 B2 B2 B2 B2 B2 B1 B1 B2 B1 B1 SC B1 B1 B1 B1 B1 B1 B1 B1
Clouds (%)    78 82 78 75 79 77 80 75 68 58 77 65 57 50 51 52 54 58 58 52 52 59
Vsby           0  0  0  0  0  0  0  0
PoP 12hr                     40          40          30          20          10
QPF 12hr                   0.15        0.11        0.02        0.01           0
Rain shwrs     C  C  C  C  C  C  C  C  C  C  C  C  C  S  S                    S
Tstms                   S  S  S  S  S  S  S  S  S  S
Haines                        3                       3
LAL               1     2     2     2     2     2     2     1     1     1     1
Max Mix Hgt                6700                    5600
AGL Mix Hgt                5000                    3900
Max Vent Rt              103700                   67100
T Wind Dir                    S                      SW
T Wind Spd                   20                      17
ADI                          90                      58
Max LVORI                     4                       4
Stability         D     C     B     F     F     C     B     F     F     C     B
Ceiling        2400  3200  4000  2400  2400  3200  4000  3200  3200  4000  4000
Sta Pres      28.26 28.29 28.27 28.26 28.28 28.31 28.28 28.29 28.27 28.24 28.16


Date          Sat 02/24/18  Sun 02/25/18  Mon 02/26/18  Tue 02/27/18
EST 6hrly     01 07 13 19   01 07 13 19   01 07 13 19   01 07 13 19
UTC 6hrly     06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Min/Max          56    72      57    64      48    63      42    61
Temp          61 57 68 67   61 57 62 59   52 49 60 56   48 43 57 54
Dewpt         57 57 57 58   58 57 52 51   50 47 45 45   43 40 37 40
PWind Dir         S     S       S     W       W    NW      NE     W
Wind Char        LT    LT      LT    LT      LT    LT      LT    LT
Avg Clouds    B1 B1 B2 B2   OV OV OV B1   B2 B2 B2 B1   SC SC SC SC
PoP 12hr         20    30      60    70      50    40      10    10
Rain shwrs     S  S  C  C    L  L  L       C  C  C  C
Tstms                S  S    S  S

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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