Point Forecast Matrices
Issued by NWS Charleston, SC

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Point Forecast Matrices
National Weather Service Charleston SC
958 AM EDT Tue Aug 11 2020

SCZ050-112100-
Charleston International Airport-Charleston SC
32.91N  80.03W Elev. 45 ft
958 AM EDT Tue Aug 11 2020

Date             Tue 08/11/20            Wed 08/12/20            Thu 08/13/20
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                      92          75          89          75          87
Temp                85 89 87 83 79 77 76 78 87 89 86 81 78 76 75 77 86 86 85 81
Dewpt               73 73 74 75 76 75 75 75 75 75 76 76 76 75 75 75 75 76 76 75
RH                  67 59 65 77 91 94 97 91 68 64 72 85 94 97100 94 70 72 75 82
Wind dir             W SW  S  S  S  S SW  S  S  S  S  S  S  S  S  S  S  S  S  S
Wind spd             3  4  6  4  3  2  2  2  3  5  6  5  4  2  1  3  5  6  8  5
Clouds              FW SC SC SC SC SC SC B1 B1 B1 B1 B1 B1 B1 B1 B2 B2 B2 B2 B2
PoP 12hr                     30          20          50          40          60
QPF 12hr                   0.12        0.13        0.17        0.06        0.26
Snow 12hr                 00-00       00-00       00-00
Rain shwrs           S  S  S  S     S  S  S  C  C  C  C  C  C  C  L  L  L  L  C
Tstms                S  S  S  S     S  S  S  C  C  C  C  C  C  C  L  L  L  L  C
Heat index          92 97 95 90             96 99 96                95 96 94
Max heat               97    97                99    99                98    96


Date          Fri 08/14/20  Sat 08/15/20  Sun 08/16/20  Mon 08/17/20
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      75    90      75    90      74    90
Temp          77 77 88 82   77 77 89 82   77 77 90 82   77 77 90 82
Dewpt         75 75 76 75   75 75 76 76   75 75 76 76   75 75 76 76
PWind dir         S    SW      SW    SW      SW    SW      SW     S
Wind char        LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    B2 B2 B2 B1   B1 B1 B1 B1   B1 B1 B1 B1   B1 B1 B1 B1
PoP 12hr         50    60      40    60      30    50      30    50
Rain shwrs     C  C  L  L    C  C  L  L    C  C  C  C    C  C  C  C
Tstms          C  C  L  L    C  C  L  L    C  C  C  C    C  C  C  C

$$
GAZ118-112100-
Savannah International Airport-Inland Chatham GA
32.12N  81.20W Elev. 50 ft
958 AM EDT Tue Aug 11 2020

Date             Tue 08/11/20            Wed 08/12/20            Thu 08/13/20
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                      93          74          91          74          89
Temp                84 91 90 83 79 77 75 76 86 91 88 83 78 76 75 76 85 89 88 82
Dewpt               73 72 74 75 76 74 74 74 75 75 75 75 74 74 74 74 75 74 75 75
RH                  70 54 60 77 91 90 97 94 70 60 66 77 88 94 97 94 72 61 66 79
Wind dir             W  W  S  S  S SW  W SW SW  S  S  S  S  S SW SW  S  S  S  S
Wind spd             4  5  8  4  4  3  2  3  3  5  6  5  3  2  1  3  5  6  6  5
Clouds              FW SC SC SC SC SC SC B1 SC B1 B2 B2 B2 B2 B1 B1 B1 B1 B2 B2
PoP 12hr                     40          40          50          50          60
QPF 12hr                   0.16        0.07        0.15        0.06        0.22
Snow 12hr                 00-00       00-00       00-00
Rain shwrs           S  S  C  C  C  S  S  S  C  C  C  C  C  C  C  L  L  L  L  C
Tstms                S  S  C  C  S  S  S  S  C  C  C  C  C  C  C  L  L  L  L  C
Heat index          90 99 99 90             95102 98 90             94 98 98
Max heat               99   100               102   101                98    98


Date          Fri 08/14/20  Sat 08/15/20  Sun 08/16/20  Mon 08/17/20
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      75    91      75    91      74    91
Temp          76 76 89 83   76 76 90 83   77 76 91 83   77 75 90 83
Dewpt         75 74 75 75   74 75 75 75   75 75 75 75   74 74 75 75
PWind dir         S     S      SW    SW      SW    SW      SW    SW
Wind char        LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    B2 B2 B2 B1   B1 B1 B1 B1   B1 B1 B1 B1   B1 B1 B1 B1
PoP 12hr         40    60      30    60      30    50      30    50
Rain shwrs     C  C  L  L    C  C  L  L    C  C  C  C    C  C  C  C
Tstms          C  C  L  L    C  C  L  L    C  C  C  C    C  C  C  C

$$
SCZ050-112100-
Charleston Waterfront-Charleston SC
32.78N  79.94W Elev. 10 ft
958 AM EDT Tue Aug 11 2020

Date             Tue 08/11/20            Wed 08/12/20            Thu 08/13/20
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                      90          77          88          77          87
Temp                85 88 86 83 81 79 78 79 87 87 85 82 79 78 77 79 86 86 85 81
Dewpt               73 74 75 75 76 76 75 76 75 76 75 76 76 75 75 75 75 76 76 75
RH                  67 63 70 77 85 91 91 91 68 70 72 82 91 91 94 88 70 72 75 82
Wind dir             W  S  S  S  S SW SW  S  S  S  S  S  S  S  S  S  S  S  S  S
Wind spd             4  8 10  6  5  3  3  3  5  9 10  8  6  5  4  4  6 10 11  9
Clouds              FW SC SC SC SC SC SC B1 SC B1 B1 B1 B1 B2 B2 B2 B2 B2 B2 B2
PoP 12hr                     20          20          50          50          50
QPF 12hr                   0.10        0.23        0.15        0.11        0.25
Snow 12hr                 00-00       00-00       00-00
Rain shwrs              S  S        S  S  S  C  C  C  C  C  C  C  C  C  C  C  C
Tstms                   S  S        S  S  S  C  C  C  C  C  C  C  C  C  C  C  C
Heat index          92 96 95 90             96 98 94                95 96 94
Max heat               97    97    90          99    98                96    96


Date          Fri 08/14/20  Sat 08/15/20  Sun 08/16/20  Mon 08/17/20
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          77    88      77    88      77    89      77    89
Temp          78 79 88 82   78 79 88 83   79 79 89 82   79 78 89 82
Dewpt         75 75 76 76   76 76 76 76   76 76 76 76   76 75 76 76
PWind dir         S    SW      SW    SW      SW    SW      SW     S
Wind char        LT    GN      LT    GN      LT    LT      LT    LT
Avg clouds    B2 B2 B2 B1   B1 B1 B1 B1   B1 B1 B1 B1   B1 B1 B1 B1
PoP 12hr         50    60      50    50      30    40      40    50
Rain shwrs     C  C  L  L    C  C  C  C    C  C  C  C    C  C  C  C
Tstms          C  C  L  L    C  C  C  C    C  C  C  C    C  C  C  C

$$
SCZ048-112100-
Beaufort Marine Corps Air Station-Beaufort SC
32.48N  80.72W Elev. 37 ft
958 AM EDT Tue Aug 11 2020

Date             Tue 08/11/20            Wed 08/12/20            Thu 08/13/20
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                      92          76          90          75          88
Temp                84 90 89 84 81 79 77 77 86 89 88 84 80 78 76 76 83 87 87 82
Dewpt               73 73 75 76 75 75 74 74 75 76 75 76 75 74 74 74 75 75 76 75
RH                  70 58 64 77 82 88 90 90 70 66 66 77 85 88 94 94 77 68 70 79
Wind dir             W SW  S  S  S SW  W  W  S  S  S  S  S  S SW SW  S  S  S  S
Wind spd             4  5  6  4  3  4  3  2  3  5  6  5  4  2  2  3  5  6  8  5
Clouds              FW SC SC SC SC SC SC B1 SC B1 B1 B1 B1 B1 B2 B2 B2 B2 B2 B2
PoP 12hr                     20          20          50          40          60
QPF 12hr                   0.11        0.06        0.13        0.08        0.18
Snow 12hr                 00-00       00-00       00-00
Rain shwrs           S  S  S  S  S  S  S  S  C  C  C  C  C  C  C  L  L  L  L  C
Tstms                S  S  S  S  S  S  S  S  C  C  C  C  C  C  C  L  L  L  L  C
Heat index          90 98 99 93             95100 98 93             90 96 98
Max heat               98    99    91         100   100                96    99


Date          Fri 08/14/20  Sat 08/15/20  Sun 08/16/20  Mon 08/17/20
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      75    90      76    91      75    90
Temp          78 76 88 83   79 77 89 83   79 77 90 83   78 76 90 83
Dewpt         75 75 76 76   75 75 76 76   76 75 76 76   74 74 75 76
PWind dir         S    SW      SW    SW      SW    SW      SW    SW
Wind char        LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    B2 B2 B2 B1   B1 B1 B1 B1   B1 B1 B1 B1   B1 B1 B1 B1
PoP 12hr         50    60      40    60      30    40      40    50
Rain shwrs     C  C  L  L    C  C  L  L    C  C  C  C    C  C  C  C
Tstms          C  C  L  L    C  C  L  L    C  C  C  C    C  C  C  C

$$
SCZ043-112100-
Walterboro-Inland Colleton SC
32.91N  80.67W Elev. 98 ft
958 AM EDT Tue Aug 11 2020

Date             Tue 08/11/20            Wed 08/12/20            Thu 08/13/20
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                      93          73          90          73          88
Temp                83 89 89 82 78 76 74 76 86 90 86 80 75 74 73 75 85 88 86 80
Dewpt               74 74 74 75 75 74 74 75 75 75 75 75 74 74 73 74 76 75 75 75
RH                  74 61 61 79 91 94100 97 70 62 70 85 97100100 97 75 66 70 85
Wind dir             W  W  S  S  S  S  S SE SE SE SE  S  S  S  S  S  S  S  S  S
Wind spd             3  3  4  3  3  2  1  1  2  3  4  3  2  1  1  2  3  5  5  3
Clouds              FW SC SC SC SC SC SC B1 SC B1 B2 B1 B1 B1 B1 B1 B1 B2 B2 B2
PoP 12hr                     40          30          50          40          60
QPF 12hr                   0.12        0.04        0.19        0.01        0.31
Snow 12hr                 00-00       00-00       00-00
Rain shwrs           S  S  C  C     S  S  S  C  C  C  C  C  C  C  L  L  L  L  C
Tstms                S  S  C  C     S  S  S  C  C  C  C  C  C  C  L  L  L  L  C
Heat index          90 98 98                95101 95                94 98 95
Max heat               98    99               101    99                98    98


Date          Fri 08/14/20  Sat 08/15/20  Sun 08/16/20  Mon 08/17/20
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          73    88      72    90      73    90      72    90
Temp          74 75 88 81   75 75 90 81   75 75 90 82   74 74 90 81
Dewpt         74 74 75 75   74 74 75 76   74 75 75 76   74 74 75 76
PWind dir         S     S       S    SW      SW    SW      SW    NW
Wind char        LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    B2 B2 B2 B2   B1 B1 B1 B2   B1 B1 B1 B1   B1 SC B1 B1
PoP 12hr         50    60      40    60      30    50      30    50
Rain shwrs     C  C  L  L    C  C  L  L    C  C  C  C    C  C  C  C
Tstms          C  C  L  L    C  C  L  L    C  C  C  C    C  C  C  C

$$
GAZ099-112100-
Metter-Candler GA
32.40N  82.06W Elev. 197 ft
958 AM EDT Tue Aug 11 2020

Date             Tue 08/11/20            Wed 08/12/20            Thu 08/13/20
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                      94          73          92          73          89
Temp                83 90 92 84 77 75 74 76 86 91 90 82 75 74 73 75 84 89 88 81
Dewpt               73 73 72 74 74 73 72 73 74 73 73 74 74 74 73 73 74 73 74 75
RH                  72 58 52 72 90 94 93 90 68 56 58 77 97100100 94 72 59 63 82
Wind dir             W  W  W SW SW SW SW  W  W  S  S SE  S  S  S  S  S  S  S  S
Wind spd             3  4  5  3  2  3  1  2  2  3  4  3  3  1  1  2  3  4  4  3
Clouds              SC FW SC SC SC SC SC B1 SC B1 B1 B1 B1 B1 B1 B1 B1 B1 B2 B2
PoP 12hr                     50          30          50          40          60
QPF 12hr                   0.10        0.09        0.16        0.03        0.40
Snow 12hr                 00-00       00-00       00-00
Rain shwrs              S  C  C     S        S  C  C  C  C  C  C  L  L  L  L  C
Tstms                   S  C  C     S        S  C  C  C  C  C  C  L  L  L  L  C
Heat index             98100 91             94100 98                91 97 97
Max heat               98   101               100   100                97    98


Date          Fri 08/14/20  Sat 08/15/20  Sun 08/16/20  Mon 08/17/20
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          73    90      73    91      74    92      73    92
Temp          73 74 90 82   75 75 90 83   75 75 92 83   74 75 91 82
Dewpt         73 74 73 74   73 74 73 74   73 73 73 73   73 73 71 73
PWind dir         S    SW      SW    SW      SW    SW      SW    SW
Wind char        LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    B1 B1 B1 B1   B1 B1 B1 B1   B1 B1 B1 B1   B1 B1 B1 B1
PoP 12hr         40    60      30    60      30    50      20    50
Rain shwrs     C  C  L  L    C  C  L  L    C  C  C  C    S  S  C  C
Tstms          C  C  L  L    C  C  L  L    C  C  C  C    S  S  C  C

$$

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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