Point Forecast Matrices
Issued by NWS Charleston, SC

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FOUS52 KCHS 161910
PFMCHS

Point Forecast Matrices
National Weather Service Charleston SC
309 PM EDT Wed Aug 16 2017

SCZ050-170900-
Charleston International Airport-Charleston SC
32.91N  80.03W Elev. 45 ft
309 PM EDT Wed Aug 16 2017

Date           08/16/17      Thu 08/17/17            Fri 08/18/17            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                      80          94          78          93          78
Temp          93 87 83 81 80 81 90 94 92 84 82 79 79 79 89 93 91 84 80 79 79 79
Dewpt         75 77 78 77 77 78 77 77 77 77 77 77 77 77 76 77 76 77 77 77 76 76
RH            56 72 85 88 91 91 66 58 62 80 85 94 94 94 66 60 62 80 91 94 91 91
Wind dir      SW SW SW SW  W SW SW SW SW  S  S SW SW SW SW  S  S  S SW SW SW SW
Wind spd       9  4  3  3  0  2  4  6  8  8  6  5  4  5  8  9 10  9  8  5  5  6
Clouds        SC SC SC SC SC SC B1 B1 B2 B1 B1 B1 B1 B1 B1 B2 B2 B2 B1 B1 B1 B1
PoP 12hr                     20          40          20          40          30
QPF 12hr                      0        0.20        0.02        0.22        0.05
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                    S  S  C  C  S  S  S  S  C  C  C  C  C  C  C  C  C
Tstms                         S  S  C  C  S  S  S  S  C  C  C  C  C  C  C  C  C
Heat index   105 99 93         103109106 94 90         100107103 94
Max heat        109    96         109   109    92         107   107    90
Heat           Y


Date           08/19  Sun 08/20/17  Mon 08/21/17  Tue 08/22/17  Wed 08/23/17
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          92      77    92      77    92      77    92      77    92
Temp          91 84   80 79 90 84   79 79 90 84   79 79 90 84   80 79 90 84
Dewpt         77 76   75 76 75 75   75 76 75 75   75 75 74 74   75 74 75 75
PWind dir        SW      SW     S       S    SE       S     S       S    SW
Wind char        GN      LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    B1 B1   B1 B1 B1 B1   B1 B1 B1 B1   B1 SC B1 B1   B1 SC B1 B1
PoP 12hr         50      30    40      30    40      30    40      20    30
Rain shwrs     C  C    C  C  C  C    C  C  C  C    C  C  C  C    S  S  C  C
Tstms          C  C    C  C  C  C    C  C  C  C    C  C  C  C    S  S  C  C

$$
GAZ118-170900-
Savannah International Airport-Inland Chatham GA
32.12N  81.20W Elev. 50 ft
309 PM EDT Wed Aug 16 2017

Date           08/16/17      Thu 08/17/17            Fri 08/18/17            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                      78          95          78          93          77
Temp          96 86 82 80 78 80 90 95 92 86 82 80 78 80 89 93 92 85 81 80 77 78
Dewpt         75 76 76 75 75 75 76 75 75 76 76 76 74 75 76 76 75 76 76 76 75 75
RH            51 72 82 85 91 85 64 53 58 72 82 88 88 85 66 58 58 75 85 88 94 91
Wind dir      SW SW SW SW  W  W  W  W SW  S SW SW SW  W SW SW SW SW SW SW SW SW
Wind spd       8  3  0  0  0  4  4  5  6  6  5  3  3  4  5  6  8  6  5  4  4  5
Clouds        SC SC FW FW SC SC B1 B2 B2 B1 B1 B1 B1 B1 B1 B2 B2 B2 SC B1 B1 B1
PoP 12hr                      5          40          20          40          30
QPF 12hr                      0        0.17        0.02        0.14        0.03
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                       S  C  C  S  S  S  S  C  C  C  C  C  C  C  C  C
Tstms                            S  C  C  S  S  S  S  C  C  C  C  C  C  C  C  C
Heat index   108 96            102107103 96            100106103 94
Max heat        110    93         107   107    93         106   106    91
Heat           Y


Date           08/19  Sun 08/20/17  Mon 08/21/17  Tue 08/22/17  Wed 08/23/17
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          92      77    93      77    92      77    93      77    93
Temp          92 84   79 79 91 85   79 79 91 84   79 79 92 85   80 79 92 85
Dewpt         77 76   75 75 74 75   75 75 74 74   74 74 73 73   73 73 73 74
PWind dir        SW      SW     S       S     S       S     S       S    SW
Wind char        LT      LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    B1 B2   B1 B1 B1 B1   B1 B1 B1 B1   B1 SC B1 B1   SC SC B1 B1
PoP 12hr         50      30    30      20    40      20    40      20    30
Rain shwrs     C  C    C  C  C  C    S  S  C  C    S  S  C  C    S  S  C  C
Tstms          C  C    C  C  C  C    S  S  C  C    S  S  C  C    S  S  C  C

$$
SCZ050-170900-
Charleston Waterfront-Charleston SC
32.78N  79.94W Elev. 10 ft
309 PM EDT Wed Aug 16 2017

Date           08/16/17      Thu 08/17/17            Fri 08/18/17            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                      82          93          80          91          79
Temp          93 87 85 83 83 83 90 92 91 85 83 81 80 81 89 91 90 83 82 81 80 80
Dewpt         78 78 78 79 77 78 78 78 78 78 78 78 78 78 77 78 77 78 78 78 77 77
RH            62 75 80 88 82 85 68 64 66 80 85 91 94 91 68 66 66 85 88 91 91 91
Wind dir      SW SW SW SW  W  W SW  S  S  S  S SW SW SW SW  S  S  S SW SW SW SW
Wind spd      10  8  8  5  0  3  6  9 10 10  9  8  5  5  9 12 12 11 10  9  8  8
Clouds        SC SC SC SC SC SC B1 B1 B2 B1 B1 B1 B1 B1 B1 B2 B2 B2 B1 B1 B1 B1
PoP 12hr                     20          30          20          40          30
QPF 12hr                      0        0.16        0.03        0.20        0.12
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                    S  S  C  C  S  S  S  S  C  C  C  C  C  C  C  C  C
Tstms                         S  S  C  C  S  S  S  S  C  C  C  C  C  C  C  C  C
Heat index   109100 96 93 91 93104106105 97 93         101105103 93 91
Max heat        110    98    93   107   107    95         105   105    91
Heat           Y


Date           08/19  Sun 08/20/17  Mon 08/21/17  Tue 08/22/17  Wed 08/23/17
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          90      79    89      79    89      79    90      79    90
Temp          90 84   80 80 88 84   80 80 88 83   80 80 89 84   80 80 89 84
Dewpt         77 76   76 76 76 76   76 76 75 75   75 75 74 75   75 75 75 76
PWind dir        SW      SW     S       S    SE       S     S       S    SW
Wind char        GN      GN    GN      LT    LT      LT    LT      LT    GN
Avg clouds    B1 B1   B1 B1 B1 B1   B1 B1 B1 B1   B1 SC B1 B1   B1 B1 B1 SC
PoP 12hr         50      40    40      30    40      30    40      20    30
Rain shwrs     C  C    C  C  C  C    C  C  C  C    C  C  C  C    S  S  C  C
Tstms          C  C    C  C  C  C    C  C  C  C    C  C  C  C    S  S  C  C

$$
SCZ048-170900-
Beaufort Marine Corps Air Station-Beaufort SC
32.48N  80.72W Elev. 37 ft
309 PM EDT Wed Aug 16 2017

Date           08/16/17      Thu 08/17/17            Fri 08/18/17            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                      80          94          78          92          77
Temp          94 86 83 82 80 81 89 94 91 85 82 80 79 79 88 92 90 83 81 80 78 78
Dewpt         75 77 77 77 76 76 77 77 76 77 77 77 76 76 76 76 76 77 77 76 76 76
RH            54 75 82 85 88 85 68 58 62 77 85 91 91 91 68 60 64 82 88 88 94 94
Wind dir      SW SW SW SW  W  W  W SW SW  S SW SW SW  W SW SW SW  S SW SW SW SW
Wind spd       6  5  3  1  0  4  5  5  5  5  5  4  4  5  5  6  6  6  6  5  5  5
Clouds        SC SC SC SC SC SC B1 B2 B2 B1 B1 B1 B1 B1 B1 B2 B2 B2 SC B1 B1 B1
PoP 12hr                     10          40          20          40          30
QPF 12hr                      0        0.17        0.02        0.13        0.04
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                       S  C  C  S  S  S  S  C  C  C  C  C  C  C  C  C
Tstms                            S  C  C  S  S  S  S  C  C  C  C  C  C  C  C  C
Heat index   106 97 92 90      102109103 96 90          99105102 92
Max heat        108    96         109   109    94         105   105    90
Heat           Y


Date           08/19  Sun 08/20/17  Mon 08/21/17  Tue 08/22/17  Wed 08/23/17
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          91      77    93      77    92      77    92      77    92
Temp          91 84   80 79 91 85   80 79 90 84   79 79 91 84   79 79 91 84
Dewpt         76 76   75 75 75 75   76 76 74 75   75 75 74 74   74 74 74 75
PWind dir        SW      SW     S       S     S       S     S       S    SW
Wind char        LT      LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    B1 B1   B1 B1 B1 B1   B1 B1 B1 B1   B1 SC B1 B1   B1 SC B1 B1
PoP 12hr         50      30    40      20    40      30    40      20    30
Rain shwrs     C  C    C  C  C  C    S  S  C  C    C  C  C  C    S  S  C  C
Tstms          C  C    C  C  C  C    S  S  C  C    C  C  C  C    S  S  C  C

$$
SCZ043-170900-
Walterboro-Inland Colleton SC
32.91N  80.67W Elev. 98 ft
309 PM EDT Wed Aug 16 2017

Date           08/16/17      Thu 08/17/17            Fri 08/18/17            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          94          76          93          76
Temp          95 86 81 79 78 80 90 94 92 86 81 79 77 79 88 93 92 85 80 79 77 78
Dewpt         74 75 76 75 75 76 77 75 76 77 76 76 75 76 76 75 75 76 76 76 75 75
RH            51 70 85 88 91 88 66 54 60 75 85 91 94 91 68 56 58 75 88 91 94 91
Wind dir       W SW SW SW SW  W  W  W SW  S  S  S SW  W SW SW SW  S  S SW SW SW
Wind spd       6  2  0  0  0  3  5  5  5  4  3  3  3  4  5  5  5  5  4  4  4  4
Clouds        SC SC SC SC SC SC B1 B1 B2 B1 B1 B1 SC B1 B1 B2 B2 B1 B1 SC SC B1
PoP 12hr                     10          30          20          40          20
QPF 12hr                      0        0.18        0.01        0.12           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                       S  C  C  S  S        C  C  C  C  S  S  S  S  C
Tstms                            S  C  C  S  S        C  C  C  C  S  S  S  S  C
Heat index   106 95            103106105 97             99105103 94
Max heat        107    90         107   107    94         105   105    91


Date           08/19  Sun 08/20/17  Mon 08/21/17  Tue 08/22/17  Wed 08/23/17
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          92      76    93      75    92      75    93      75    93
Temp          92 84   78 78 92 84   78 78 91 83   78 78 92 84   78 78 92 84
Dewpt         76 76   74 75 74 74   75 75 73 74   74 74 73 74   74 73 73 74
PWind dir        SW       S     S       S    SE       S    SW       S    SW
Wind char        LT      LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    B1 B2   B1 B1 B1 B1   B1 B1 B1 B1   B1 SC B1 B1   B1 SC B1 B1
PoP 12hr         50      30    40      20    40      30    40      20    30
Rain shwrs     C  C    C  C  C  C    S  S  C  C    C  C  C  C    S  S  C  C
Tstms          C  C    C  C  C  C    S  S  C  C    C  C  C  C    S  S  C  C

$$
GAZ099-170900-
Metter-Candler GA
32.40N  82.06W Elev. 197 ft
309 PM EDT Wed Aug 16 2017

Date           08/16/17      Thu 08/17/17            Fri 08/18/17            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          95          77          93          76
Temp          95 87 82 80 78 79 90 95 94 87 81 79 78 78 88 93 92 85 80 78 77 77
Dewpt         74 75 75 75 74 75 76 75 75 76 76 76 75 76 76 75 74 77 75 75 74 75
RH            51 68 79 85 88 88 64 53 54 70 85 91 91 94 68 56 56 77 85 91 90 94
Wind dir       W SW SW  W  W  W  W  W  W SW SW SW  W  W  W  W SW  S SW SW SW  W
Wind spd       5  3  0  0  0  3  4  4  4  3  3  2  3  3  3  4  5  6  5  4  3  3
Clouds        SC SC FW FW FW FW SC B1 B2 B2 B1 B1 B1 B1 B1 B2 B2 B2 B1 SC SC B1
PoP 12hr                      5          30          20          40          20
QPF 12hr                      0        0.15        0.01        0.13           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                          S  C  S           S  C  C  C  S  S  S  S  C
Tstms                               S  C  S           S  C  C  C  S  S  S  S  C
Heat index   106 96            102107106 98             99105102 96
Max heat        106    94         107   107    94         105   103    92


Date           08/19  Sun 08/20/17  Mon 08/21/17  Tue 08/22/17  Wed 08/23/17
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          92      76    93      75    93      75    92      76    93
Temp          91 84   78 78 92 84   78 78 92 84   78 78 91 84   79 78 92 84
Dewpt         75 76   75 75 74 75   74 75 73 74   74 74 73 74   73 73 73 74
PWind dir        SW      SW    SW       S    SE      SE     S       S     W
Wind char        LT      LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    B1 B2   B1 B1 B1 B1   B1 SC SC B1   B1 SC B1 B1   B1 SC B1 B1
PoP 12hr         50      30    40      20    40      20    40      20    30
Rain shwrs     C  C    C  C  C  C    S  S  C  C    S  S  C  C    S  S  C  C
Tstms          C  C    C  C  C  C    S  S  C  C    S  S  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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