Point Forecast Matrices
Issued by NWS Charleston, SC

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Point Forecast Matrices
National Weather Service Charleston SC
922 AM EST Fri Dec 15 2017

SCZ050-152100-
Charleston International Airport-Charleston SC
32.91N  80.03W Elev. 45 ft
922 AM EST Fri Dec 15 2017

Date             Fri 12/15/17            Sat 12/16/17            Sun 12/17/17
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          37          59          37          67
Temp                53 62 63 52 48 45 40 38 49 57 58 45 41 39 39 39 56 66 66 54
Dewpt               41 39 39 39 37 35 33 32 32 33 34 37 37 37 37 37 42 46 49 51
RH                  64 43 41 61 65 68 76 79 52 40 40 73 85 92 92 92 59 48 54 90
Wind dir             W  W  W  W  W NW NW  N  W  W SW  S  E NE NE NE  E  S  S SE
Wind spd             6 11 12  8  9  5  4  3  2  2  2  2  1  0  1  2  3  4  3  3
Clouds              SC B1 B2 OV B2 SC FW FW FW FW FW FW FW FW FW FW SC SC B1 B1
PoP 12hr                      0           0           0           0           5
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Wind chill                            37 36
Min chill                                34    38          39    37


Date          Mon 12/18/17  Tue 12/19/17  Wed 12/20/17  Thu 12/21/17
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          52    68      58    71      53    63      44    66
Temp          53 54 67 59   58 61 71 64   60 53 62 52   47 45 65 53
Dewpt         53 54 62 58   58 58 63 61   54 48 44 46   42 41 49 51
PWind dir         S    SW      SW     W       W     N      NE     E
Wind char        LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    B1 B2 OV B2   B2 B2 B2 B2   B2 B1 SC SC   SC FW FW SC
PoP 12hr         30    50      50    50      40    20      10    10
Rain shwrs        C  C  C    C  C  C  C    C  C  S  S

$$
GAZ118-152100-
Savannah International Airport-Inland Chatham GA
32.12N  81.20W Elev. 50 ft
922 AM EST Fri Dec 15 2017

Date             Fri 12/15/17            Sat 12/16/17            Sun 12/17/17
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                      66          37          60          38          68
Temp                54 63 63 53 49 44 40 37 47 57 59 45 42 40 40 40 56 66 67 56
Dewpt               41 40 38 39 36 34 31 30 31 32 32 36 36 36 37 37 43 49 51 53
RH                  61 43 39 59 61 68 70 75 53 38 36 70 79 85 89 89 62 54 56 90
Wind dir             W  W  W  W  W NW NW  N NW NW NE SE SW  W  N NE  E SE SE SE
Wind spd             5 11 12  8  8  4  4  3  2  2  1  1  0  0  0  1  3  4  4  3
Clouds              B1 B1 B2 OV B2 B1 SC FW FW FW FW FW FW FW SC SC SC SC B1 B1
PoP 12hr                      0           0           0           0           5
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Wind chill                            37 34
Min chill                                34    38                38


Date          Mon 12/18/17  Tue 12/19/17  Wed 12/20/17  Thu 12/21/17
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          54    71      60    74      54    66      46    67
Temp          56 56 70 60   60 60 73 66   61 54 65 56   49 47 65 57
Dewpt         55 56 64 60   60 59 65 62   56 51 49 47   44 44 52 54
PWind dir         S     S      SW     W       W     N      NE     E
Wind char        LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    B2 B2 B2 B2   B2 B2 B2 B2   B2 B1 SC SC   SC FW SC SC
PoP 12hr         40    40      40    50      40    20      10    20
Rain shwrs        C  C  C    C  C  C  C    C  C  S  S          S  S

$$
SCZ050-152100-
Charleston Waterfront-Charleston SC
32.78N  79.94W Elev. 10 ft
922 AM EST Fri Dec 15 2017

Date             Fri 12/15/17            Sat 12/16/17            Sun 12/17/17
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          40          58          41          66
Temp                55 62 62 54 49 47 43 40 50 57 57 46 44 43 42 42 58 65 65 57
Dewpt               43 42 42 42 40 37 34 33 33 35 36 38 40 39 39 39 45 48 51 52
RH                  64 48 48 64 71 68 70 76 52 43 45 73 86 86 89 89 62 54 60 83
Wind dir             W SW  W  W  W NW NW  N  N  N  E  S  W NW  N NE  E SE SE SE
Wind spd             8 12 12  9 11  8  6  6  3  2  2  2  2  2  2  2  3  3  3  3
Clouds              B1 B1 B2 OV B2 SC FW FW FW FW FW FW FW FW FW FW SC SC B1 B1
PoP 12hr                      0           0           0           0           5
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Wind chill                            39 36
Min chill                                35    39


Date          Mon 12/18/17  Tue 12/19/17  Wed 12/20/17  Thu 12/21/17
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          55    68      59    70      54    63      47    65
Temp          55 56 67 60   59 61 69 63   59 54 62 54   49 48 64 55
Dewpt         55 55 62 60   59 59 63 61   56 50 45 46   43 43 50 53
PWind dir         S    SW      SW     W       W     N      NE     E
Wind char        LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    B1 B2 OV B2   B2 B2 B2 B2   B2 B1 SC SC   SC FW FW SC
PoP 12hr         30    40      50    50      40    20      10    10
Rain shwrs        C  C  C    C  C  C  C    C  C  S  S

$$
SCZ048-152100-
Beaufort Marine Corps Air Station-Beaufort SC
32.48N  80.72W Elev. 37 ft
922 AM EST Fri Dec 15 2017

Date             Fri 12/15/17            Sat 12/16/17            Sun 12/17/17
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          37          60          39          66
Temp                54 63 62 52 48 44 40 37 47 56 59 44 41 41 40 41 55 64 65 55
Dewpt               42 41 39 40 36 34 30 30 32 32 33 36 36 36 36 37 42 47 49 52
RH                  64 44 43 63 63 68 67 75 56 40 37 73 82 82 85 85 61 54 56 90
Wind dir             W  W  W  W  W NW NW  N NW NW  W  S  W  N  N NE  E SE SE SE
Wind spd             6 10 12  8 10  6  6  4  2  1  1  2  1  0  1  2  3  4  4  3
Clouds              SC B1 B2 OV B2 SC FW FW FW FW FW FW FW FW FW SC SC SC B1 B1
PoP 12hr                      0           0           0           0           5
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Wind chill                            35 33
Min chill                                32    37                39


Date          Mon 12/18/17  Tue 12/19/17  Wed 12/20/17  Thu 12/21/17
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          53    69      57    71      53    64      45    66
Temp          53 55 68 60   59 59 70 63   60 53 63 54   49 46 63 55
Dewpt         53 55 62 59   59 58 62 61   54 49 46 46   42 42 50 53
PWind dir         S    SW      SW     W       W     N      NE     E
Wind char        LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    B1 B2 OV B2   B2 B2 B2 B2   B2 B1 SC SC   SC FW SC SC
PoP 12hr         40    50      40    50      40    20      10    10
Rain shwrs        C  C  C    C  C  C  C    C  C  S  S

$$
SCZ043-152100-
Walterboro-Inland Colleton SC
32.91N  80.67W Elev. 98 ft
922 AM EST Fri Dec 15 2017

Date             Fri 12/15/17            Sat 12/16/17            Sun 12/17/17
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          34          59          35          66
Temp                51 61 61 51 45 41 38 34 46 56 58 44 39 37 37 37 53 63 65 53
Dewpt               40 38 37 38 35 33 29 29 31 31 31 34 34 34 34 34 40 43 46 49
RH                  66 42 41 61 68 73 70 82 55 38 36 68 82 89 89 89 61 48 50 86
Wind dir             W  W  W  W  W NW NW  N  W  W SW SW  S SE  E  E SE  S  S SE
Wind spd             5  9 11  6  8  4  3  2  2  2  2  2  1  1  1  1  2  4  3  3
Clouds              SC SC B2 B2 B1 SC FW FW FW FW FW FW FW FW SC SC SC SC B1 B1
PoP 12hr                      0           0           0           0           5
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Wind chill                         38 36
Min chill                          38    33    34          37    36


Date          Mon 12/18/17  Tue 12/19/17  Wed 12/20/17  Thu 12/21/17
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          51    68      57    70      52    64      42    66
Temp          53 55 67 60   57 58 69 63   58 52 62 51   45 43 63 53
Dewpt         51 53 62 57   57 57 63 60   53 48 44 44   40 40 48 51
PWind dir         S    SW      SW     W       W     N      NE    SE
Wind char        LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    B2 B2 OV B2   B2 B2 B2 B2   B2 B1 SC SC   FW FW FW SC
PoP 12hr         40    50      50    50      40    10      10    10
Rain shwrs        C  C  C    C  C  C  C    C  C

$$
GAZ099-152100-
Metter-Candler GA
32.40N  82.06W Elev. 197 ft
922 AM EST Fri Dec 15 2017

Date             Fri 12/15/17            Sat 12/16/17            Sun 12/17/17
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                      61          35          59          38          67
Temp                51 60 59 49 46 43 38 35 45 55 58 44 41 40 40 39 54 63 67 56
Dewpt               42 40 38 39 35 34 29 28 30 32 31 35 35 34 35 35 40 45 48 52
RH                  71 47 45 68 65 70 70 75 55 41 36 70 79 79 82 85 59 52 50 86
Wind dir             W  W  W  W NW NW NW NW NW  W  W SW SW SW  S SE SE  S SE SE
Wind spd             4 10 11  8  8  4  3  2  2  2  1  1  1  0  1  1  3  4  4  4
Clouds              B1 B1 B2 OV B1 SC FW FW FW FW FW FW FW SC SC SC SC SC B1 B2
PoP 12hr                      0           0           0           0          10
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                                                                    S
Wind chill                            36
Min chill                                33    34                38


Date          Mon 12/18/17  Tue 12/19/17  Wed 12/20/17  Thu 12/21/17
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          55    70      60    73      53    65      44    66
Temp          57 59 68 61   62 61 72 67   61 53 63 53   48 45 63 56
Dewpt         55 56 65 59   62 61 65 61   55 50 49 47   44 42 51 53
PWind dir        SE    SW      SW     W       W     N       E    SE
Wind char        LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    B2 OV OV B2   B2 B2 B2 B2   B2 B1 SC SC   SC FW SC SC
PoP 12hr         50    60      50    50      40    10      10    20
Rain shwrs     S  C  L  L    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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