Point Forecast Matrices
Issued by NWS Charleston, SC

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Point Forecast Matrices
National Weather Service Charleston SC
621 AM EST Sun Dec 17 2017

SCZ050-172100-
Charleston International Airport-Charleston SC
32.91N  80.03W Elev. 45 ft
621 AM EST Sun Dec 17 2017

Date             Sun 12/17/17            Mon 12/18/17            Tue 12/19/17
EST 3hrly     04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19
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                      63          52          67          55          72
Temp             36 45 62 62 54 52 54 54 54 61 66 65 56 56 58 58 58 61 71 70 62
Dewpt            32 37 42 45 47 48 50 52 53 56 59 60 56 56 57 57 56 59 60 61 60
RH               85 73 48 54 77 86 86 93 96 84 78 84100100 96 96 93 93 68 73 93
Wind dir          N NE  S SW SW  S  S  N  E  S  W  W SW SW SW  W  W  W  W  W SW
Wind spd          0  1  4  2  0  0  0  0  0  3  5  6  6  4  3  4  5  8  9  8  6
Clouds           SC SC SC B1 B1 B2 B2 B2 B2 B2 OV OV OV B2 B2 B2 B1 B1 B1 B2 B2
PoP 12hr                      0          10          40          30          10
QPF 12hr                      0           0        0.06        0.01           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                                S  C  C  C  C  C  S  S              S
Obvis            PF


Date          Wed 12/20/17  Thu 12/21/17  Fri 12/22/17  Sat 12/23/17
EST 6hrly     01 07 13 19   01 07 13 19   01 07 13 19   01 07 13 19
UTC 6hrly     06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Min/Max          57    69      50    60      46    67      52    70
Temp          59 57 69 61   56 50 59 52   48 47 65 55   54 53 69 61
Dewpt         59 57 60 57   52 49 51 52   48 47 58 55   54 53 61 59
PWind dir        SW    SW       W    NE       N    NW      SW    SW
Wind char        LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    B2 B2 B2 B2   B2 B1 B1 B1   B1 B1 B1 SC   B1 B1 B1 B1
PoP 12hr         20    60      60    20      10    10      20    20
Rain shwrs     S  S  C  L    L  C  S  S                  S  S  S  S

$$
GAZ118-172100-
Savannah International Airport-Inland Chatham GA
32.12N  81.20W Elev. 50 ft
621 AM EST Sun Dec 17 2017

Date             Sun 12/17/17            Mon 12/18/17            Tue 12/19/17
EST 3hrly     04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19
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                      65          55          72          58          75
Temp             36 47 63 64 57 55 57 59 59 64 71 70 59 59 59 59 59 63 73 74 65
Dewpt            32 39 43 46 49 52 53 55 55 58 62 62 59 59 59 59 58 61 63 63 62
RH               85 74 48 52 75 90 86 87 87 81 73 76100100100100 96 93 71 69 90
Wind dir         NE  E SE  S SE SE  S  S SW SW  W SW SW SW SW  W  W  W  W SW SW
Wind spd          0  3  5  2  0  0  0  0  0  2  4  4  4  3  3  3  4  5  6  6  5
Clouds           SC SC SC B1 B1 B1 B1 B2 B2 OV B2 B2 OV B2 B2 B2 B2 B1 B1 B2 B2
PoP 12hr                      0          10          50          20          10
QPF 12hr                      0           0        0.09           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                                S  C  C  C  S  S                    S


Date          Wed 12/20/17  Thu 12/21/17  Fri 12/22/17  Sat 12/23/17
EST 6hrly     01 07 13 19   01 07 13 19   01 07 13 19   01 07 13 19
UTC 6hrly     06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Min/Max          58    73      53    64      47    70      53    72
Temp          61 58 72 64   61 55 61 55   51 48 68 58   55 54 70 62
Dewpt         61 58 63 60   56 54 55 54   51 48 60 58   55 54 62 60
PWind dir        SW    SW       W    NE      NE    NE      SW    SW
Wind char        LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    B2 B2 B2 B2   B2 B1 B1 B1   B1 B1 B1 B1   B1 B1 B1 B1
PoP 12hr         20    50      50    20      10    10      20    20
Rain shwrs     S  S  C  C    C  C  S  S                  S  S  S  S

$$
SCZ050-172100-
Charleston Waterfront-Charleston SC
32.78N  79.94W Elev. 10 ft
621 AM EST Sun Dec 17 2017

Date             Sun 12/17/17            Mon 12/18/17            Tue 12/19/17
EST 3hrly     04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19
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                      57          54          65          56          70
Temp             42 45 56 57 54 54 55 55 56 60 65 64 57 57 59 59 59 61 69 68 62
Dewpt            35 41 44 49 50 51 52 54 54 57 59 60 57 57 59 58 57 59 60 61 61
RH               76 86 64 75 86 90 90 96 93 90 81 87100100100 96 93 93 73 78 97
Wind dir          N NE SE SW SW  S SW NW  E  S SW SW SW SW SW  W  W  W  W  W SW
Wind spd          0  2  3  3  1  1  1  0  0  3  5  6  6  5  4  4  5  6  9  8  6
Clouds           SC SC SC SC B1 B1 B2 B2 B2 B2 OV OV OV B2 B2 B2 B1 B1 B1 B2 B2
PoP 12hr                      0          10          40          30          10
QPF 12hr                      0           0        0.06        0.01           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                                S  C  C  C  C  C  S  S              S
Obvis            PF


Date          Wed 12/20/17  Thu 12/21/17  Fri 12/22/17  Sat 12/23/17
EST 6hrly     01 07 13 19   01 07 13 19   01 07 13 19   01 07 13 19
UTC 6hrly     06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Min/Max          59    68      52    60      49    67      55    69
Temp          60 59 67 61   57 52 59 53   50 49 65 57   56 55 69 61
Dewpt         60 59 60 58   54 51 52 53   50 49 59 57   56 55 62 60
PWind dir        SW    SW       W    NE       N     N      SW    SW
Wind char        LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    B2 B2 B2 B2   B2 B1 B1 B1   B1 B1 B1 SC   B1 B1 B1 B1
PoP 12hr         20    60      60    20      10    10      20    20
Rain shwrs     S  S  C  L    L  C  S  S                  S  S  S  S

$$
SCZ048-172100-
Beaufort Marine Corps Air Station-Beaufort SC
32.48N  80.72W Elev. 37 ft
621 AM EST Sun Dec 17 2017

Date             Sun 12/17/17            Mon 12/18/17            Tue 12/19/17
EST 3hrly     04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19
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                      63          53          69          55          72
Temp             36 48 61 62 55 53 55 58 59 63 68 66 56 55 56 57 57 61 70 70 63
Dewpt            36 43 42 45 49 51 52 54 55 57 60 60 56 55 56 57 56 60 60 61 61
RH              100 83 49 54 80 93 90 86 87 81 76 81100100100100 96 97 71 73 93
Wind dir         NE  E SE  S  S SE  S SE SE  S  W  W SW  W  W  W  W  W  W  W SW
Wind spd          0  2  4  2  0  0  0  0  0  2  4  4  4  4  4  4  4  6  8  6  4
Clouds           SC SC SC SC B1 SC B2 B1 B2 OV OV OV OV B2 B2 B2 B2 B1 B1 B2 B2
PoP 12hr                      0          10          50          30          10
QPF 12hr                      0           0        0.09        0.01           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                                S  C  C  C  C  C                    S
Obvis            PF


Date          Wed 12/20/17  Thu 12/21/17  Fri 12/22/17  Sat 12/23/17
EST 6hrly     01 07 13 19   01 07 13 19   01 07 13 19   01 07 13 19
UTC 6hrly     06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Min/Max          57    70      51    61      47    68      53    70
Temp          60 57 69 63   59 52 59 52   49 48 66 54   54 54 69 60
Dewpt         60 57 60 59   53 51 52 52   49 48 58 54   54 54 60 59
PWind dir        SW    SW       W    NE      NE    NW      SW    SW
Wind char        LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    B2 B2 B2 B2   B2 B1 B1 B1   B1 B1 SC SC   B1 B1 B1 B1
PoP 12hr         20    60      60    20      10    10      20    20
Rain shwrs     S  S  C  L    L  C  S  S                  S  S  S  S

$$
SCZ043-172100-
Walterboro-Inland Colleton SC
32.91N  80.67W Elev. 98 ft
621 AM EST Sun Dec 17 2017

Date             Sun 12/17/17            Mon 12/18/17            Tue 12/19/17
EST 3hrly     04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19
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                      63          51          65          53          72
Temp             31 44 60 62 53 52 54 55 55 59 64 63 54 54 54 54 55 60 70 71 63
Dewpt            29 37 38 42 44 47 49 51 52 55 58 59 54 54 54 54 55 59 60 60 60
RH               92 76 44 48 71 83 83 86 90 87 81 87100100100100100 96 71 68 90
Wind dir         NE  E  S SW  E  S  S SE NE NW  W  W  W  W SW  W  W  W  W  W SW
Wind spd          0  2  4  1  0  0  0  0  0  2  3  4  4  3  3  3  3  5  8  6  5
Clouds           SC SC SC B1 B1 B1 B2 B1 B2 OV OV OV OV B2 B2 B2 B2 B1 B2 B2 B2
PoP 12hr                      0          20          40          30          10
QPF 12hr                      0           0        0.07        0.01           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                             S  S  C  C  C  C  C                    C
Obvis            PF


Date          Wed 12/20/17  Thu 12/21/17  Fri 12/22/17  Sat 12/23/17
EST 6hrly     01 07 13 19   01 07 13 19   01 07 13 19   01 07 13 19
UTC 6hrly     06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Min/Max          56    69      48    59      44    67      51    70
Temp          58 56 68 62   54 49 58 52   46 45 64 53   52 52 69 61
Dewpt         58 56 60 57   51 48 50 50   46 45 57 53   52 52 60 59
PWind dir        SW    SW       W    NE      NE    NE      SW    SW
Wind char        LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    B2 B2 B2 B2   B2 B2 B1 B1   B1 B1 B1 B1   B1 B1 B1 B1
PoP 12hr         30    70      60    20      10    10      20    20
Rain shwrs     C  C  C  L    L  C  S  S                  S  S  S  S

$$
GAZ099-172100-
Metter-Candler GA
32.40N  82.06W Elev. 197 ft
621 AM EST Sun Dec 17 2017

Date             Sun 12/17/17            Mon 12/18/17            Tue 12/19/17
EST 3hrly     04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19
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                      65          56          68          57          74
Temp             35 45 62 64 57 57 57 58 59 61 68 66 59 58 58 58 59 64 72 73 66
Dewpt            33 40 38 40 46 52 54 55 56 59 62 62 59 58 58 58 58 62 63 63 64
RH               92 82 41 41 67 83 90 90 90 93 81 87100100100100 96 93 73 71 93
Wind dir          E SE  S SW SE SE  S  S SE SW  W  W  W  W SW  W  W  W  W  W SW
Wind spd          0  3  6  3  0  0  0  0  0  2  4  3  3  3  3  3  4  5  6  5  3
Clouds           SC SC B1 B1 B2 B1 OV B2 OV OV OV OV OV B2 B2 B2 B2 B2 B2 B2 B2
PoP 12hr                      5          20          50          20          10
QPF 12hr                      0           0        0.11           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                             S  C  C  C  C  S  S                    S


Date          Wed 12/20/17  Thu 12/21/17  Fri 12/22/17  Sat 12/23/17
EST 6hrly     01 07 13 19   01 07 13 19   01 07 13 19   01 07 13 19
UTC 6hrly     06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Min/Max          59    72      53    63      48    69      54    71
Temp          62 59 71 66   59 53 61 54   51 48 67 57   55 55 69 62
Dewpt         62 59 64 62   55 53 54 54   51 48 60 57   55 55 62 59
PWind dir        SW    SW       W    NE      NE     E      SW     W
Wind char        LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    B2 B2 B2 B2   B1 B1 B1 B1   B1 B1 B1 B1   B1 B1 B2 B2
PoP 12hr         20    60      50    20      10    20      20    30
Rain shwrs     S  S  C  L    C  C  S  S          S  S    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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