Point Forecast Matrices
Issued by NWS Charleston, SC

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Point Forecast Matrices
National Weather Service Charleston SC
631 AM EDT Mon Aug 21 2017

SCZ050-212245-
Charleston International Airport-Charleston SC
32.91N  80.03W Elev. 45 ft
631 AM EDT Mon Aug 21 2017

Date             Mon 08/21/17            Tue 08/22/17            Wed 08/23/17
EDT 3hrly     05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20
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                      88          76          89          76          91
Temp             79 84 85 86 81 79 78 77 78 85 88 87 82 80 78 77 78 86 90 89 83
Dewpt            77 76 75 75 76 75 75 75 75 76 76 75 75 75 75 74 75 75 76 76 76
RH               94 77 72 70 85 88 91 94 91 75 68 68 79 85 91 90 91 70 64 66 80
Wind dir         NE NE  E SE SE  E  S SW NW SW  S  S  S  S  S SW SW SW SW  S  S
Wind spd          0  4  6  6  5  2  1  0  0  3  6 10  8  4  4  3  4  5  8  9  9
Clouds           B1 B2 B2 B1 B1 B1 B1 B1 B1 B1 B1 B1 SC SC SC SC SC B1 B1 B1 B1
PoP 12hr                     40          10          30          20          30
QPF 12hr                   0.35           0        0.14           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs        C  C  C  S                 S  C  C  S  S  S  S  C  C  C  C  C
Tstms             C  C  C  S                 S  C  C  S  S  S  S  C  C  C  C  C
Heat index          93 94 95                94 99 96                95102100 91
Max heat               95    95                99    99               102   102


Date          Thu 08/24/17  Fri 08/25/17  Sat 08/26/17  Sun 08/27/17
EDT 6hrly     02 08 14 20   02 08 14 20   02 08 14 20   02 08 14 20
UTC 6hrly     06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Min/Max          76    88      73    86      71    87      70    85
Temp          78 78 87 80   75 75 85 78   73 73 86 78   72 72 84 78
Dewpt         76 75 76 75   73 73 74 73   71 69 67 67   65 66 65 67
PWind dir        SW     W      NE    NE      NE    NE      NE    NE
Wind char        LT    LT      LT    LT      LT    GN      LT    GN
Avg clouds    B1 B2 B2 OV   OV B2 B2 B2   B1 SC SC SC   SC SC SC SC
PoP 12hr         40    60      50    40      20    20      10    20
Rain shwrs     C  C  L  L    C  C  C  C    S  S  S  S          S  S
Tstms          C  C  L  L    C  C  C  C    S  S  S  S          S  S

$$
GAZ118-212245-
Savannah International Airport-Inland Chatham GA
32.12N  81.20W Elev. 50 ft
631 AM EDT Mon Aug 21 2017

Date             Mon 08/21/17            Tue 08/22/17            Wed 08/23/17
EDT 3hrly     05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20
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                      88          75          90          76          92
Temp             79 84 85 86 81 79 77 76 77 85 89 88 83 80 78 77 78 87 91 89 84
Dewpt            76 75 75 75 75 75 75 74 75 75 74 74 75 74 74 74 74 75 74 74 76
RH               91 74 72 70 82 88 94 94 94 72 61 63 77 82 88 90 88 68 58 61 77
Wind dir         NE  E  E SE SE  E  S SE  N  S SE  S  S  S  S SW SW SW  S  S  S
Wind spd          0  5  8  6  5  2  1  0  0  3  6  9  8  4  3  3  3  4  5  8  9
Clouds           B1 B2 B2 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 SC SC SC SC B1 B1 B1 B1
PoP 12hr                     50          10          30          20          30
QPF 12hr                   0.38           0        0.22           0        0.04
Snow 12hr                 00-00       00-00       00-00
Rain shwrs        S  C  C  C                 S  C  C  S  S  S  S  C  C  C  C  C
Tstms             S  C  C  C                 S  C  C  S  S  S  S  C  C  C  C  C
Heat index          92 94 95                94 98 97 90             96101 98 93
Max heat               95    95                98    98               101   101


Date          Thu 08/24/17  Fri 08/25/17  Sat 08/26/17  Sun 08/27/17
EDT 6hrly     02 08 14 20   02 08 14 20   02 08 14 20   02 08 14 20
UTC 6hrly     06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Min/Max          76    90      74    88      72    88      70    87
Temp          79 78 88 82   76 76 86 80   74 74 86 79   73 72 86 79
Dewpt         75 74 76 75   74 74 74 74   72 71 68 69   67 66 64 66
PWind dir        SW     S      NE    NE      NE    NE      NE    NE
Wind char        LT    LT      LT    LT      LT    GN      LT    GN
Avg clouds    B1 B1 B2 B2   B2 B2 B2 B2   B1 B1 SC SC   SC SC SC SC
PoP 12hr         40    60      50    50      20    20      10    20
Rain shwrs     C  C  L  L    C  C  C  C    S  S  S  S          S  S
Tstms          C  C  L  L    C  C  C  C    S  S  S  S          S  S

$$
SCZ050-212245-
Charleston Waterfront-Charleston SC
32.78N  79.94W Elev. 10 ft
631 AM EDT Mon Aug 21 2017

Date             Mon 08/21/17            Tue 08/22/17            Wed 08/23/17
EDT 3hrly     05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20
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                      86          79          89          78          90
Temp             82 85 84 85 82 80 79 79 79 85 88 87 83 81 80 79 80 86 89 88 84
Dewpt            77 76 76 77 77 76 75 75 76 76 76 75 75 75 76 75 76 76 76 76 77
RH               85 75 77 77 85 88 88 88 91 75 68 68 77 82 88 88 88 72 66 68 80
Wind dir         NE  E  E SE SE  E  S SW  W  S  S  S  S  S SW SW SW SW  S  S  S
Wind spd          1  5  8  9  6  4  3  1  1  4  9 11  9  8  6  5  5  6  9 11 11
Clouds           B1 B2 B2 B1 B1 B1 B1 B1 B1 B1 B1 B1 SC SC SC SC SC B1 B1 B1 B1
PoP 12hr                     40          10          30          20          30
QPF 12hr                   0.37           0        0.15           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs        C  C  C  S                 S  C  S  S  S        C  C  C  C  C
Tstms             C  C  C  S                 S  C  S  S  S        C  C  C  C  C
Heat index       90 94 93 95 90             94 99 96 90             96100 99 93
Max heat         90    94    96                99    99               100   100


Date          Thu 08/24/17  Fri 08/25/17  Sat 08/26/17  Sun 08/27/17
EDT 6hrly     02 08 14 20   02 08 14 20   02 08 14 20   02 08 14 20
UTC 6hrly     06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Min/Max          78    88      75    86      73    86      72    85
Temp          80 79 87 81   77 76 85 79   75 75 85 79   75 74 84 79
Dewpt         77 76 76 76   75 74 74 74   73 70 67 68   67 67 66 68
PWind dir        SW    SW       E    NE      NE    NE      NE    NE
Wind char        GN    LT      LT    GN      GN    GN      GN    GN
Avg clouds    B1 B2 B2 B2   OV OV B2 B2   B1 B1 SC SC   SC SC SC SC
PoP 12hr         50    50      50    40      20    20      20    20
Rain shwrs     C  C  C  C    C  C  C  C    S  S  S  S    S  S  S  S
Tstms          C  C  C  C    C  C  C  C    S  S  S  S    S  S  S  S

$$
SCZ048-212245-
Beaufort Marine Corps Air Station-Beaufort SC
32.48N  80.72W Elev. 37 ft
631 AM EDT Mon Aug 21 2017

Date             Mon 08/21/17            Tue 08/22/17            Wed 08/23/17
EDT 3hrly     05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20
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                      88          76          90          76          91
Temp             79 84 85 86 82 79 78 77 78 86 89 88 83 80 78 77 78 86 90 89 83
Dewpt            77 76 76 76 76 76 75 75 76 75 75 75 75 75 75 75 75 75 74 75 75
RH               94 77 75 72 82 91 91 94 94 70 64 66 77 85 91 94 91 70 60 64 77
Wind dir         NE  E  E SE SE  E  S  S NW  S  S  S  S  S SW SW SW SW SW  S  S
Wind spd          0  4  6  6  4  2  1  0  0  3  5  6  6  4  4  3  4  5  5  6  6
Clouds           B1 B2 B2 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 SC SC SC SC B1 B1 B1 B1
PoP 12hr                     50          10          30          20          30
QPF 12hr                   0.37           0        0.21           0        0.01
Snow 12hr                 00-00       00-00       00-00
Rain shwrs        S  C  C  C                 S  C  S  S  S  S  S  C  C  C  C  C
Tstms             S  C  C  C                 S  C  S  S  S  S  S  C  C  C  C  C
Heat index          93 94 96                95 99 98 90             95 99 99 90
Max heat               96    96                99    99                99    99


Date          Thu 08/24/17  Fri 08/25/17  Sat 08/26/17  Sun 08/27/17
EDT 6hrly     02 08 14 20   02 08 14 20   02 08 14 20   02 08 14 20
UTC 6hrly     06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Min/Max          76    89      74    86      72    87      71    87
Temp          78 78 88 81   76 75 85 79   74 74 85 78   73 73 86 79
Dewpt         76 75 75 75   74 74 73 73   72 70 66 68   67 65 64 67
PWind dir        SW     S      NE    NE      NE    NE      NE    NE
Wind char        LT    LT      LT    GN      LT    GN      LT    GN
Avg clouds    B1 B2 B2 B2   B2 B2 B2 B2   B1 SC SC SC   SC SC SC SC
PoP 12hr         40    60      50    40      20    20      10    20
Rain shwrs     C  C  L  L    C  C  C  C    S  S  S  S          S  S
Tstms          C  C  L  L    C  C  C  C    S  S  S  S          S  S

$$
SCZ043-212245-
Walterboro-Inland Colleton SC
32.91N  80.67W Elev. 98 ft
631 AM EDT Mon Aug 21 2017

Date             Mon 08/21/17            Tue 08/22/17            Wed 08/23/17
EDT 3hrly     05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20
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                      89          74          91          75          92
Temp             76 84 86 87 81 78 76 75 76 86 90 88 83 79 78 76 77 87 91 89 83
Dewpt            76 75 75 74 75 75 75 74 75 75 74 74 75 74 74 74 74 75 74 74 75
RH              100 74 70 65 82 91 97 97 97 70 60 63 77 85 88 94 90 68 58 61 77
Wind dir         NE NE  E SE  S  E  S  S  N  W  S  S  S  S SW SW SW SW SW  S  S
Wind spd          0  4  5  5  3  1  0  0  0  2  4  5  6  3  3  2  3  3  4  5  6
Clouds           B1 B1 B2 B1 B1 B1 B1 B1 B1 B1 B2 B1 B1 SC SC SC SC B1 B2 B1 B1
PoP 12hr                     40          10          30          20          40
QPF 12hr                   0.30           0        0.12           0        0.02
Snow 12hr                 00-00       00-00       00-00
Rain shwrs           S  C  C                 S  C  C  S  S  S  S  C  C  C  C  C
Tstms                S  C  C                 S  C  C  S  S  S  S  C  C  C  C  C
Obvis            PF
Heat index          92 95 95                95 99 97 90             96101 98 90
Max heat               96    95                99    99               101   101


Date          Thu 08/24/17  Fri 08/25/17  Sat 08/26/17  Sun 08/27/17
EDT 6hrly     02 08 14 20   02 08 14 20   02 08 14 20   02 08 14 20
UTC 6hrly     06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Min/Max          75    89      72    87      69    87      68    86
Temp          78 77 87 80   74 74 85 78   72 71 85 77   71 71 85 78
Dewpt         75 74 75 75   72 72 72 71   70 68 64 66   64 64 63 66
PWind dir        SW     W      NE    NE      NE    NE      NE    NE
Wind char        LT    LT      LT    LT      LT    LT      LT    GN
Avg clouds    B1 B1 B2 OV   B2 B2 B2 B1   B1 SC SC SC   SC SC SC SC
PoP 12hr         40    60      50    30      20    20      10    10
Rain shwrs     C  C  L  L    C  C  C  C    S  S  S  S
Tstms          C  C  L  L    C  C  C  C    S  S  S  S

$$
GAZ099-212245-
Metter-Candler GA
32.40N  82.06W Elev. 197 ft
631 AM EDT Mon Aug 21 2017

Date             Mon 08/21/17            Tue 08/22/17            Wed 08/23/17
EDT 3hrly     05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20
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                      91          74          93          75          93
Temp             75 85 87 88 82 79 77 75 77 87 92 90 84 80 78 76 78 87 92 90 84
Dewpt            75 75 73 74 74 75 74 74 74 74 72 73 75 75 75 74 75 75 73 73 76
RH              100 72 63 63 77 88 90 97 90 65 52 58 74 85 91 94 91 68 54 58 77
Wind dir          E  E  E SE SE  E SE SE NE  S  S  S  S  S  S SW SW  W SW SW  S
Wind spd          0  4  5  5  3  1  0  0  0  2  5  5  3  3  3  2  3  4  3  3  4
Clouds           SC B1 B1 B1 B1 B1 B1 B1 B1 B1 B2 B1 B1 B1 SC SC SC B1 B1 B2 B1
PoP 12hr                     40          10          30          20          40
QPF 12hr                   0.16           0        0.07           0        0.11
Snow 12hr                 00-00       00-00       00-00
Rain shwrs              C  C                 S  S  C  S  S  S  S  C  C  C  C  C
Tstms                   C  C                 S  S  C  S  S  S  S  C  C  C  C  C
Obvis            PF
Heat index          94 94 97                95100 98 92             96101 98 93
Max heat               98    97               100   100               101   101


Date          Thu 08/24/17  Fri 08/25/17  Sat 08/26/17  Sun 08/27/17
EDT 6hrly     02 08 14 20   02 08 14 20   02 08 14 20   02 08 14 20
UTC 6hrly     06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Min/Max          75    90      73    87      71    88      69    88
Temp          78 77 89 81   76 75 86 79   73 73 87 78   72 71 86 78
Dewpt         75 75 74 75   74 73 73 74   72 70 66 67   66 64 62 64
PWind dir        SW    NW       E    NE      NE    NE      NE    NE
Wind char        LT    LT      LT    LT      LT    LT      LT    GN
Avg clouds    B1 B1 B2 B2   B2 B2 B2 B1   B1 SC SC SC   SC SC SC SC
PoP 12hr         40    50      40    30      20    10      10    10
Rain shwrs     C  C  C  C    C  C  C  C    S  S
Tstms          C  C  C  C    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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