Point Forecast Matrices
Issued by NWS Charleston, SC

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Point Forecast Matrices
National Weather Service Charleston SC
554 PM EDT Wed Aug 23 2017

SCZ050-240900-
Charleston International Airport-Charleston SC
32.91N  80.03W Elev. 45 ft
554 PM EDT Wed Aug 23 2017

Date           08/23/17      Thu 08/24/17            Fri 08/25/17            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                      77          90          74          88          73
Temp             83 81 79 78 78 85 90 88 80 77 76 74 76 85 88 86 80 77 75 74 74
Dewpt            75 76 76 75 75 76 75 75 76 75 74 73 73 74 73 74 73 73 72 71 71
RH               77 85 91 91 91 75 62 66 88 94 94 97 90 70 61 68 79 87 90 90 90
Wind dir          S SW SW SW SW  W SW  S  S  N NW  N NE NE NE  E  E NE NE NE NE
Wind spd         10  5  3  1  1  4  4  4  4  2  2  5  6  8  9  9  6  6  6  8  9
Clouds           SC SC B1 B1 B1 B1 B2 B2 B2 B2 B2 B1 B2 B1 B1 B1 B1 B1 B1 SC B1
PoP 12hr                     40          50          40          20          20
QPF 12hr                      0        0.25        0.33        0.14        0.01
Snow 12hr                 00-00       00-00       00-00
Rain shwrs        S  C  C  C  C  C  C  C  C  C  C  S  S  S  S  S  S  S  S  S
Tstms             S  C  C  C  C  C  C  C  C  C  C  S  S  S  S  S  S  S  S  S
Heat index       90             94101 98                93 96 94
Max heat        101               101   101                96    96


Date           08/26  Sun 08/27/17  Mon 08/28/17  Tue 08/29/17  Wed 08/30/17
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      71    83      70    82      72    82      73    83
Temp          86 79   73 71 83 78   72 72 82 77   73 73 82 78   75 74 83 78
Dewpt         71 70   67 66 66 67   66 67 70 70   70 69 71 71   69 70 72 74
PWind dir        NE      NE    NE      NE    NE      NE     N      NE     N
Wind char        GN      GN    GN      GN    GN      GN    GN      LT    LT
Avg clouds    B1 B1   B1 B1 B1 B1   B1 B1 B2 B2   B2 B2 B2 B2   B2 B2 B1 B1
PoP 12hr         10      10    20      20    30      20    30      30    20
Rain shwrs                   S  S    S  S  C  C    S  S  C  C    C  C  S  S
Tstms                        S  S    S  S  C  C    S  S  C  C    C  C  S  S

$$
GAZ118-240900-
Savannah International Airport-Inland Chatham GA
32.12N  81.20W Elev. 50 ft
554 PM EDT Wed Aug 23 2017

Date           08/23/17      Thu 08/24/17            Fri 08/25/17            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                      76          92          75          88          74
Temp             84 80 79 77 77 87 92 89 82 79 77 75 76 84 88 86 81 78 76 75 75
Dewpt            74 75 74 73 74 75 75 74 76 75 75 73 74 75 75 73 74 73 73 72 72
RH               72 85 85 87 90 68 58 61 82 88 94 94 94 74 66 65 79 85 90 90 90
Wind dir          S  S SW SW SW SW  S  S  S  S NW  N NE NE NE  E  E NE NE NE NE
Wind spd          8  3  3  0  2  4  4  4  4  3  2  3  5  8  9  8  6  6  6  8  9
Clouds           B1 SC B1 B1 B1 SC B2 B2 B2 B2 B1 B1 B1 B1 B2 B2 B1 B1 B1 B1 B1
PoP 12hr                     40          40          30          30          20
QPF 12hr                      0        0.16        0.33        0.16        0.02
Snow 12hr                 00-00       00-00       00-00
Rain shwrs        C  C  S  S     C  C  C  C  C  C  S  S  C  C  C  S  S  S  S  S
Tstms             C  C  S  S     C  C  C  C  C  C  S  S  C  C  C  S  S  S  S  S
Heat index       91             96103 98                92 98 93
Max heat        101    90         103   103                98    97


Date           08/26  Sun 08/27/17  Mon 08/28/17  Tue 08/29/17  Wed 08/30/17
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          87      72    85      71    84      72    85      73    86
Temp          87 79   75 73 85 79   72 72 83 78   74 73 84 79   76 74 86 80
Dewpt         72 71   69 67 67 66   66 66 68 69   69 69 71 71   69 69 71 72
PWind dir        NE      NE    NE      NE    NE      NE    NE      NE     N
Wind char        GN      GN    GN      GN    GN      GN    GN      LT    LT
Avg clouds    B1 B2   B1 B1 B1 B1   B1 B1 B2 B2   B2 B2 B2 B2   B2 B2 B1 B1
PoP 12hr         20      10    20      20    20      20    30      30    20
Rain shwrs     S  S          S  S    S  S  S  S    S  S  C  C    C  C  S  S
Tstms          S  S          S  S    S  S  S  S    S  S  C  C    C  C  S  S

$$
SCZ050-240900-
Charleston Waterfront-Charleston SC
32.78N  79.94W Elev. 10 ft
554 PM EDT Wed Aug 23 2017

Date           08/23/17      Thu 08/24/17            Fri 08/25/17            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                      79          89          76          87          75
Temp             84 82 81 80 79 86 89 87 81 79 77 76 77 84 86 85 80 78 77 76 76
Dewpt            76 77 77 76 76 76 76 75 76 75 75 74 75 74 74 74 74 73 74 73 72
RH               77 85 88 88 91 72 66 68 85 88 94 94 94 72 68 70 82 85 90 90 87
Wind dir          S SW SW SW SW SW  S  S SW  S NW  N NE NE NE  E  E NE NE NE NE
Wind spd         12  9  8  4  4  5  5  8  5  2  3  5  8 10 11 12  9  9  9 11 12
Clouds           SC SC B1 B1 B2 B1 B2 B2 B2 B2 B2 B1 B2 B1 B1 B1 B1 B1 B1 B1 B1
PoP 12hr                     40          50          40          30          20
QPF 12hr                      0        0.28        0.35        0.14        0.03
Snow 12hr                 00-00       00-00       00-00
Rain shwrs        S  C  C  C  C  C  C  C  C  C  C  C  C  S  S  S  S  S  S  S
Tstms             S  C  C  C  C  C  C  C  C  C  C  C  C  S  S  S  S  S  S  S
Heat index       92 90          95 99 96                91 94 93
Max heat         99    92          99    99                94    94


Date           08/26  Sun 08/27/17  Mon 08/28/17  Tue 08/29/17  Wed 08/30/17
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      72    83      72    82      73    82      74    82
Temp          85 79   75 73 82 78   74 73 82 77   75 74 82 78   76 75 82 79
Dewpt         72 71   68 67 68 68   68 68 70 71   72 71 71 71   70 71 73 74
PWind dir        NE      NE    NE      NE    NE      NE     N      NE     N
Wind char        GN      GN    GN      GN    GN      GN    GN      GN    GN
Avg clouds    B1 B1   B1 B1 B1 B1   B1 B1 B2 B2   B2 B2 B2 B2   B2 B2 B1 B1
PoP 12hr         10      20    20      30    30      30    30      30    20
Rain shwrs             S  S  S  S    C  C  C  C    C  C  C  C    C  C  S  S
Tstms                  S  S  S  S    C  C  C  C    C  C  C  C    C  C  S  S

$$
SCZ048-240900-
Beaufort Marine Corps Air Station-Beaufort SC
32.48N  80.72W Elev. 37 ft
554 PM EDT Wed Aug 23 2017

Date           08/23/17      Thu 08/24/17            Fri 08/25/17            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                      77          90          75          88          74
Temp             83 81 80 78 78 85 90 88 81 79 76 75 76 84 87 86 80 77 76 75 76
Dewpt            75 76 75 74 75 75 75 75 76 75 74 74 74 74 73 73 74 74 73 72 72
RH               77 85 85 88 91 72 62 66 85 88 94 97 94 72 63 65 82 90 90 90 87
Wind dir          S SW SW SW SW  W  S  S  S SW NW  N NE NE NE  E  E NE NE NE NE
Wind spd          9  5  5  2  2  4  4  4  4  3  2  4  6  8  9  9  8  6  6  8 10
Clouds           B1 SC SC B1 B1 SC B2 B2 B2 B2 B2 B1 B2 B1 B1 B1 B1 B1 B1 B1 B1
PoP 12hr                     40          40          30          20          20
QPF 12hr                      0        0.24        0.35        0.14        0.02
Snow 12hr                 00-00       00-00       00-00
Rain shwrs        C  C  S  C  S  C  C  C  C  C  C  S  S  S  S  S  S  S  S  S
Tstms             C  C  S  C  S  C  C  C  C  C  C  S  S  S  S  S  S  S  S  S
Heat index       90             94101 98                91 94 93
Max heat        101               101   101                94    96


Date           08/26  Sun 08/27/17  Mon 08/28/17  Tue 08/29/17  Wed 08/30/17
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      72    84      71    83      72    83      73    84
Temp          86 80   75 72 83 78   73 72 83 78   74 73 83 78   75 75 84 79
Dewpt         71 71   68 67 66 66   66 67 68 69   70 70 70 71   70 70 72 73
PWind dir        NE      NE    NE      NE    NE      NE    NE      NE     N
Wind char        GN      GN    GN      GN    GN      GN    GN      GN    LT
Avg clouds    B1 B2   B1 B1 B1 B1   B1 B1 B2 B2   B2 B1 B2 B2   B2 B2 B1 B1
PoP 12hr         10      10    20      20    20      20    30      30    20
Rain shwrs                   S  S    S  S  S  S    S  S  C  C    C  C  S  S
Tstms                        S  S    S  S  S  S    S  S  C  C    C  C  S  S

$$
SCZ043-240900-
Walterboro-Inland Colleton SC
32.91N  80.67W Elev. 98 ft
554 PM EDT Wed Aug 23 2017

Date           08/23/17      Thu 08/24/17            Fri 08/25/17            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                      74          91          73          89          72
Temp             83 79 78 76 76 85 91 89 81 77 75 74 74 83 89 87 80 76 74 72 74
Dewpt            75 75 75 74 74 75 74 73 75 74 73 72 72 72 71 71 73 71 71 69 70
RH               77 88 91 94 94 72 58 59 82 90 94 93 93 70 56 59 79 85 90 90 87
Wind dir          S  S SW SW SW  W SW NW SE  E  N NE NE NE NE  E  E NE NE NE NE
Wind spd          8  3  0  0  0  3  3  3  3  2  2  4  5  8  8  6  4  4  5  5  8
Clouds           SC SC B1 B1 B1 B1 B2 B2 B2 B1 B1 B1 B1 SC B1 B1 B1 SC SC SC SC
PoP 12hr                     40          40          30          20          10
QPF 12hr                      0        0.19        0.19        0.11           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs        S  C  C  C     C  C  C  C  C  S  S  S  S  S  S
Tstms             S  C  C  C     C  C  C  C  C  S  S  S  S  S  S
Heat index       90             94101 97                   95 93
Max heat         99               101   101                95    95


Date           08/26  Sun 08/27/17  Mon 08/28/17  Tue 08/29/17  Wed 08/30/17
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      70    84      69    83      70    82      71    84
Temp          86 79   72 71 83 77   71 70 82 77   72 71 82 77   73 73 84 79
Dewpt         69 69   66 64 62 64   64 65 66 68   68 68 69 70   68 69 71 73
PWind dir        NE      NE    NE      NE    NE      NE    NE      NE     N
Wind char        GN      LT    GN      LT    GN      GN    GN      LT    LT
Avg clouds    B1 B1   B1 B1 B1 B1   B1 B1 B2 B2   B2 B1 B2 B2   B2 B2 B2 B2
PoP 12hr          5       5    10      10    20      20    30      30    20
Rain shwrs                                 S  S    S  S  C  C    C  C  S  S
Tstms                                      S  S    S  S  C  C    C  C  S  S

$$
GAZ099-240900-
Metter-Candler GA
32.40N  82.06W Elev. 197 ft
554 PM EDT Wed Aug 23 2017

Date           08/23/17      Thu 08/24/17            Fri 08/25/17            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                      75          92          74          89          73
Temp             85 80 78 76 76 86 91 91 83 78 76 75 75 83 88 88 80 76 75 73 74
Dewpt            74 74 74 73 74 73 72 72 74 74 74 73 73 73 72 70 73 73 72 70 71
RH               70 82 88 90 94 65 54 54 74 88 94 94 94 72 59 55 79 90 90 90 90
Wind dir         SW SW SW SW  W NW  N  N  E  E  E NE NE NE NE  E  E  E NE NE NE
Wind spd          5  0  0  0  0  3  4  4  3  4  2  4  5 10  8  9  5  4  4  5  8
Clouds           SC SC SC SC SC SC B2 B2 B2 B1 B1 B1 B1 SC B1 B1 B1 B1 B1 SC SC
PoP 12hr                     20          40          30          20          10
QPF 12hr                      0        0.11        0.15        0.10           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs        S  S  S  S     C  C  C  C  S        S  S  S  S
Tstms             S  S  S  S     C  C  C  C  S        S  S  S  S
Heat index       93             93 99 99 90                95 93
Max heat        101    90          99   100                95    95


Date           08/26  Sun 08/27/17  Mon 08/28/17  Tue 08/29/17  Wed 08/30/17
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          87      70    86      70    84      71    84      72    86
Temp          87 79   72 71 85 79   72 71 82 79   74 72 84 78   74 73 85 80
Dewpt         69 69   68 65 63 62   63 63 65 67   67 67 68 69   68 67 69 71
PWind dir        NE      NE    NE      NE    NE      NE    NE      NE     N
Wind char        GN      LT    GN      LT    GN      GN    GN      LT    LT
Avg clouds    B1 B1   B1 B1 B1 B1   B1 B1 B2 B2   B2 B1 B2 B2   B2 B2 B2 B1
PoP 12hr         10       5    10      10    20      20    30      30    20
Rain shwrs                                 S  S    S  S  C  C    C  C  S  S
Tstms                                      S  S    S  S  C  C    C  C  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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