Point Forecast Matrices
Issued by NWS Charleston, SC

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Point Forecast Matrices
National Weather Service Charleston SC
308 PM EDT Wed Sep 20 2017

SCZ050-210900-
Charleston International Airport-Charleston SC
32.91N  80.03W Elev. 45 ft
308 PM EDT Wed Sep 20 2017

Date           09/20/17      Thu 09/21/17            Fri 09/22/17            Sat
EDT 3hrly     17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08
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                      71          90          71          87          69
Temp          88 78 75 74 72 73 85 90 88 79 76 73 72 72 82 87 84 77 74 71 70 70
Dewpt         71 71 71 71 71 71 72 70 70 72 71 71 70 70 71 70 70 71 70 69 69 68
RH            57 79 87 90 97 93 65 52 55 79 85 93 93 93 69 57 63 82 87 93 97 93
Wind dir      SW  S SW SW SW  W NW SE  S  S  S  S NE  N NE  E  E  E  E NE NE NE
Wind spd       5  5  3  0  0  2  3  3  6  4  3  1  1  2  4  6  6  4  5  3  4  5
Clouds        SC SC SC SC SC SC SC B1 B1 SC SC SC SC SC SC B1 B1 SC SC SC FW SC
PoP 12hr                     10          30          10          30          10
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                       S  C  S              S  S  C  C
Tstms                               C  S              S  S  C  C
Obvis                        PF
Heat index    94                91 96 93                   92
Max heat         96                96    96                92    91
Coast Flood       Y


Date           09/23  Sun 09/24/17  Mon 09/25/17  Tue 09/26/17  Wed 09/27/17
EDT 6hrly     14 20   02 08 14 20   02 08 14 20   02 08 14 20   02 08 14 20
UTC 6hrly     18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Max/Min          85      67    84      67    85      68    87      69    88
Temp          85 76   69 68 84 75   70 68 85 76   71 69 86 77   72 70 88 78
Dewpt         67 68   68 66 66 68   67 66 67 69   68 66 67 68   66 65 66 67
PWind dir        NE      NE    NE       N     N      NW    NW      NW    NW
Wind char        LT      LT    LT      LT    GN      LT    LT      LT    LT
Avg clouds    SC FW   SC SC SC SC   SC SC SC SC   SC SC SC SC   FW FW FW FW
PoP 12hr         10       5     5      10    10      10     5       5     5

$$
GAZ118-210900-
Savannah International Airport-Inland Chatham GA
32.12N  81.20W Elev. 50 ft
308 PM EDT Wed Sep 20 2017

Date           09/20/17      Thu 09/21/17            Fri 09/22/17            Sat
EDT 3hrly     17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08
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                      71          90          71          87          70
Temp          89 80 77 75 72 72 84 90 88 80 76 74 72 72 83 87 85 77 75 72 70 70
Dewpt         70 71 70 70 70 70 70 69 69 71 71 71 70 70 70 69 69 70 71 70 69 69
RH            54 74 79 84 93 93 63 50 54 74 85 90 93 93 65 55 59 79 87 93 97 97
Wind dir       S  S  S SW  W  W NW  E SE SE SE SE NE  N NE  E  E  E  E NE NE NE
Wind spd       6  4  3  0  0  1  2  4  6  5  3  1  1  2  5  8  8  5  4  3  5  6
Clouds        SC SC SC SC SC B1 SC B1 B1 SC SC SC SC SC SC B1 B1 SC SC SC SC SC
PoP 12hr                     10          30          20          30          10
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs     S                 S  C  C  S           S  S  C  C              S
Tstms          S                    C  C  S           S  S  C  C              S
Obvis                        PF
Heat index    94                   95 92                   91
Max heat         97                95    95                91    91


Date           09/23  Sun 09/24/17  Mon 09/25/17  Tue 09/26/17  Wed 09/27/17
EDT 6hrly     14 20   02 08 14 20   02 08 14 20   02 08 14 20   02 08 14 20
UTC 6hrly     18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Max/Min          85      67    85      67    87      69    88      68    90
Temp          85 76   69 68 85 77   71 68 86 77   71 69 87 78   72 70 88 78
Dewpt         68 68   67 66 65 67   67 65 66 68   66 65 65 66   66 65 65 67
PWind dir        NE      NE    NE       N     N      NW    NW      NW    NW
Wind char        GN      LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    SC SC   SC SC SC SC   SC SC SC SC   SC SC SC FW   FW FW FW FW
PoP 12hr         20       5     5      10    10       5     5       5     5
Rain shwrs     S  S
Tstms          S  S

$$
SCZ050-210900-
Charleston Waterfront-Charleston SC
32.78N  79.94W Elev. 10 ft
308 PM EDT Wed Sep 20 2017

Date           09/20/17      Thu 09/21/17            Fri 09/22/17            Sat
EDT 3hrly     17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08
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                      73          89          73          85          71
Temp          86 79 76 75 73 74 84 88 86 79 77 75 74 74 82 85 83 77 74 73 71 72
Dewpt         72 72 72 72 72 72 73 71 71 72 72 72 71 71 71 71 71 72 71 70 70 70
RH            63 79 87 90 97 93 70 57 61 79 85 90 90 90 69 63 67 85 90 90 97 93
Wind dir       S  S SW SW SW  W  W SE  S  S  S SE NE  N NE  E  E  E  E NE NE NE
Wind spd       9  6  4  2  1  3  3  5  9  5  4  1  3  3  5  9  9  6  6  5  6  6
Clouds        SC SC SC SC SC SC SC B1 B1 SC SC SC SC SC SC B1 B1 SC SC SC FW SC
PoP 12hr                     10          20          10          20          10
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                          S                 S  S  C  C
Tstms                               S                 S  S  C  C
Heat index    92                90 94 91                   90
Max heat         94                94    94                90    90
Coast Flood       Y


Date           09/23  Sun 09/24/17  Mon 09/25/17  Tue 09/26/17  Wed 09/27/17
EDT 6hrly     14 20   02 08 14 20   02 08 14 20   02 08 14 20   02 08 14 20
UTC 6hrly     18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Max/Min          84      69    84      70    85      71    86      71    87
Temp          84 76   71 70 83 75   71 70 84 76   72 71 85 77   73 72 87 78
Dewpt         68 68   69 67 67 68   68 67 68 69   69 67 68 69   68 66 67 69
PWind dir        NE      NE    NE      NE     N      NW    NW      NW    NW
Wind char        GN      LT    GN      GN    GN      LT    LT      LT    GN
Avg clouds    SC FW   FW SC SC SC   SC SC SC SC   SC SC SC SC   FW FW FW FW
PoP 12hr         10       5    10      10    10      10     5       5     5

$$
SCZ048-210900-
Beaufort Marine Corps Air Station-Beaufort SC
32.48N  80.72W Elev. 37 ft
308 PM EDT Wed Sep 20 2017

Date           09/20/17      Thu 09/21/17            Fri 09/22/17            Sat
EDT 3hrly     17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08
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                      72          90          71          86          69
Temp          86 79 77 74 72 73 85 90 88 79 76 74 72 73 82 86 84 77 74 72 71 70
Dewpt         71 72 71 71 71 71 71 70 69 72 72 71 71 70 70 69 69 71 71 69 69 68
RH            61 79 82 90 97 93 63 52 54 79 87 90 97 90 67 57 61 82 90 90 93 93
Wind dir       S  S  S SW SW  W NW SE SE SE SE SE NE  N NE  E  E  E  E NE NE NE
Wind spd       5  5  3  1  0  2  3  3  6  5  3  1  1  2  5  6  6  5  5  3  5  5
Clouds        SC SC SC SC SC SC SC B1 B1 SC SC SC SC SC SC B1 B1 SC SC SC FW SC
PoP 12hr                     20          20          20          30          10
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs     S  S              S  S  S  S           S  S  C  C              S
Tstms          S  S                 S  S  S           S  S  C  C
Obvis                        PF
Heat index    91                90 96 92                   90
Max heat         94                96    96                90    90
Coast Flood       Y


Date           09/23  Sun 09/24/17  Mon 09/25/17  Tue 09/26/17  Wed 09/27/17
EDT 6hrly     14 20   02 08 14 20   02 08 14 20   02 08 14 20   02 08 14 20
UTC 6hrly     18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Max/Min          85      67    84      67    86      68    87      69    89
Temp          84 75   70 68 83 76   70 69 85 76   71 70 86 77   72 70 86 77
Dewpt         67 68   67 66 64 67   67 65 65 68   67 66 65 67   66 65 64 67
PWind dir        NE      NE    NE       N     N      NW    NW      NW    NW
Wind char        GN      LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    SC SC   FW SC SC SC   SC SC SC SC   SC SC SC FW   FW FW FW FW
PoP 12hr         20       5     5       5    10      10     5       5     5
Rain shwrs     S  S

$$
SCZ043-210900-
Walterboro-Inland Colleton SC
32.91N  80.67W Elev. 98 ft
308 PM EDT Wed Sep 20 2017

Date           09/20/17      Thu 09/21/17            Fri 09/22/17            Sat
EDT 3hrly     17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08
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                      69          91          70          87          67
Temp          90 79 74 72 70 70 84 91 89 79 75 72 71 71 82 86 86 77 73 70 68 69
Dewpt         69 70 70 70 70 70 71 69 69 71 71 70 69 69 70 69 69 70 69 68 67 67
RH            50 74 87 93100100 65 49 52 77 87 93 93 93 67 57 57 79 87 93 97 93
Wind dir      SW  S  S  S  S  W  N NE  E SE SE SE NE  N NE  E  E  E  E NE NE NE
Wind spd       4  3  1  0  0  1  3  2  3  4  3  1  1  1  4  5  5  3  3  1  3  3
Clouds        SC SC SC SC SC SC SC B1 B1 SC SC SC SC SC SC B1 B1 B1 SC SC SC SC
PoP 12hr                     20          30          20          40          10
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs     S  S              S  C  C  S  S        S  S  C  C
Tstms          S  S                 C  C  S           S  S  C  C
Obvis                     PF PF
Heat index    95                   96 94                   90 90
Max heat         96                96    96                90    91


Date           09/23  Sun 09/24/17  Mon 09/25/17  Tue 09/26/17  Wed 09/27/17
EDT 6hrly     14 20   02 08 14 20   02 08 14 20   02 08 14 20   02 08 14 20
UTC 6hrly     18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Max/Min          86      65    85      65    86      66    88      67    89
Temp          85 76   67 66 84 75   69 66 85 76   69 68 87 78   70 68 87 77
Dewpt         65 66   66 65 63 66   65 64 65 67   65 64 65 66   64 63 64 65
PWind dir        NE      NE    NE       N     N       N    NW      NW     N
Wind char        LT      LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    SC FW   FW FW SC SC   SC SC SC SC   SC SC SC FW   FW CL FW FW
PoP 12hr         10       5     5       5    10       5     5       5     5

$$
GAZ099-210900-
Metter-Candler GA
32.40N  82.06W Elev. 197 ft
308 PM EDT Wed Sep 20 2017

Date           09/20/17      Thu 09/21/17            Fri 09/22/17            Sat
EDT 3hrly     17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08
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                      70          90          70          87          68
Temp          90 80 76 73 71 71 83 90 89 81 76 73 71 71 82 87 85 77 73 70 69 69
Dewpt         69 71 70 70 70 70 71 69 68 70 70 69 68 69 70 69 69 70 70 68 67 68
RH            50 74 82 90 97 97 67 50 50 69 82 87 90 93 67 55 59 79 90 93 93 97
Wind dir      SW  S  S  S  S SW NE  E  E  E SE SE SE NE NE  E  E  E  E  E NE NE
Wind spd       3  1  0  0  0  1  2  3  4  3  2  1  1  1  4  5  6  4  4  2  4  3
Clouds        B1 SC SC SC SC SC SC B1 B1 B1 SC SC SC SC SC B1 B1 B1 SC SC SC SC
PoP 12hr                     20          30          30          30          10
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs     S  S              S  C  C  C  S        S  S  C  C              S
Tstms          S  S                 C  C  C           S  S  C  C
Obvis                     PF PF
Heat index    95                   95 93                   91
Max heat         96                95    94                91    91


Date           09/23  Sun 09/24/17  Mon 09/25/17  Tue 09/26/17  Wed 09/27/17
EDT 6hrly     14 20   02 08 14 20   02 08 14 20   02 08 14 20   02 08 14 20
UTC 6hrly     18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Max/Min          86      65    86      66    88      67    89      67    91
Temp          85 76   69 66 85 77   69 67 87 79   71 68 88 78   70 68 89 80
Dewpt         67 68   66 65 64 66   65 64 64 66   65 64 64 65   65 64 63 65
PWind dir        NE      NE    NE      NE     N      NW    NW      NW     N
Wind char        LT      LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    SC SC   SC FW SC SC   FW FW SC SC   SC SC SC FW   CL CL CL FW
PoP 12hr         20       5     5       5     5       5     5       5     5
Rain shwrs     S  S

$$

PRODUCT KEY...

--- Cloud Cover ---
CODE   PERCENTAGE            SKY COVER DAY/NIGHT
 CL    0 TO <=5 percent      Sunny/Clear
 FW    >5 TO <=25 percent    Sunny/Mostly Clear
 SC    >25 TO <=50 percent   Partly Cloudy
 B1    >50 TO <=69 percent   Mostly Cloudy
 B2    >69 TO <=87 percent   Mostly Cloudy
 OV    >87 TO 100 percent    Cloudy

--- Obstructions to Visibility ---    --- Weather Coverage ---
CODE   TYPE                           CODE   QUALIFYING TERM
 F     Fog                             S     Slight
 PF    Patchy Fog                      C     Chance
 F+    Dense Fog                       L     Likely
 PF+   Patchy Dense Fog                O     Occasional
 H     Haze                            D     Definite
 BS    Blowing Snow
 K     Smoke
 BD    Blowing Dust
 AF    Volcanic Ashfall

--- Extended Wind Forecast Character ---
                           12-HR MAX SUSTAINED
CODE   WIND CHARACTER          WIND SPEED
 LT    Light                   < 8 mph
 GN    Gentle                  8-14 mph
 BZ    Breezy                  15-22 mph
 WY    Windy                   23-30 mph
 VW    Very Windy              31-39 mph
 SD    Strong/Damaging         >=40 mph

$$




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