Point Forecast Matrices
Issued by NWS Charleston, SC
Issued by NWS Charleston, SC
958
FOUS52 KCHS 210546
PFMCHS
Point Forecast Matrices
National Weather Service Charleston SC
146 AM EDT Thu Aug 21 2025
SCZ050-212000-
Charleston International Airport-Charleston SC
32.91N 80.03W Elev. 45 ft
146 AM EDT Thu Aug 21 2025
Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25
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 85 73 83
Temp 74 75 84 89 90 83 80 78 76 76 80 82 81 78 76 74 74 75 79 81 80 76
Dewpt 70 70 71 70 71 73 74 74 73 73 74 73 73 73 73 73 72 72 73 73 73 72
RH 87 84 65 54 54 72 82 88 90 90 82 74 77 85 90 97 93 90 82 77 79 87
Wind dir NW NW NW NW N S SW SW N NE E E E E E E E NE E E E E
Wind spd 6 6 8 6 5 2 2 2 4 8 10 11 10 6 5 4 5 6 9 10 10 8
Clouds SC FW SC SC SC SC B1 B1 B1 B2 B2 B2 B2 B2 B1 B1 B1 B2 B2 B2 B2 B2
PoP 12hr 20 40 60 40 70
QPF 12hr 0 0.01 0.31 0.13 0.51
Snow 12hr 00-00 00-00 00-00
Rain shwrs S C C C C C L L C C C C C C L L C
Tstms S C C C C C L L C C C C C C L C C
Heat index 94 96
Max heat 94 98
High Surf Y Y Y Y
Date Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 Wed 08/27/25
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 72 86 72 90 72 89 69 84
Temp 74 74 84 78 74 74 88 81 75 73 86 79 73 71 81 76
Dewpt 73 73 72 73 72 72 71 72 70 67 64 66 67 65 65 65
PWind dir NE NE W W W NW NW NE
Wind char LT LT LT LT LT LT LT LT
Avg clouds B1 B1 B1 B2 SC SC SC B1 FW FW FW FW FW FW SC B1
PoP 12hr 40 60 20 30 5 10 5 20
Rain shwrs C C C L S C S
Tstms C C S C S C S
$$
GAZ118-212000-
Savannah International Airport-Inland Chatham GA
32.12N 81.20W Elev. 50 ft
146 AM EDT Thu Aug 21 2025
Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25
EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20
UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
Max/Min 94 74 87 73 84
Temp 74 75 86 91 89 82 78 76 75 75 83 84 82 77 75 75 74 74 79 82 82 77
Dewpt 71 72 74 74 74 75 75 74 74 74 76 76 76 74 75 74 74 74 76 75 75 74
RH 90 90 68 58 61 79 91 94 97 97 80 77 82 90100 97100100 91 79 79 90
Wind dir NW NW NW NW NW S SW W SW SW E E E E E E NE NE NE E E E
Wind spd 2 3 3 3 4 2 2 1 2 3 5 8 9 4 2 2 3 3 5 6 6 4
Clouds FW CL FW B1 B1 B1 B1 SC SC B1 B1 OV OV B2 B2 B2 B1 B2 B2 OV OV B2
PoP 12hr 40 50 80 60 80
QPF 12hr 0.14 0.03 0.84 0.30 0.47
Snow 12hr 00-00 00-00 00-00
Rain shwrs C C C C S C C D D L L C C L L D D C
Tstms C C C C S C C D L C C C C S C L L C
Heat index 94101 98 91 93
Max heat 101 102 93 93 90
Date Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 Wed 08/27/25
EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
Min/Max 72 87 72 91 70 89 69 86
Temp 74 73 85 78 74 74 89 82 75 71 87 80 72 71 84 77
Dewpt 74 73 75 75 73 73 73 72 70 65 65 67 66 65 66 65
PWind dir NE NW W W W N N N
Wind char LT LT LT LT LT LT LT LT
Avg clouds B2 B1 B1 B2 B1 SC SC B1 FW FW FW FW FW FW SC B1
PoP 12hr 40 70 20 30 5 10 5 20
Rain shwrs C S C L S C S
Tstms C S C L S C S
$$
SCZ050-212000-
Charleston Waterfront-Charleston SC
32.78N 79.94W Elev. 10 ft
146 AM EDT Thu Aug 21 2025
Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25
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 77 83 76 82
Temp 76 76 84 89 89 84 81 79 78 78 81 82 81 79 78 77 77 78 80 80 80 79
Dewpt 72 73 74 74 74 76 76 76 75 75 76 75 75 75 75 74 74 74 76 75 75 74
RH 87 90 72 61 61 77 85 91 91 91 85 79 82 88 91 90 90 88 88 85 85 85
Wind dir NW NW NW NW NW SW SW W N NE E E E E E E E E E E E E
Wind spd 6 6 6 5 5 3 2 2 3 6 10 11 11 6 5 4 5 5 10 11 11 8
Clouds SC SC SC SC SC SC B1 B1 B1 B2 B2 B2 B2 B2 B1 B1 B2 B2 B2 B2 B2 B2
PoP 12hr 20 40 60 50 70
QPF 12hr 0 0 0.40 0.19 0.58
Snow 12hr 00-00 00-00 00-00
Rain shwrs S C C C C C L L C C C C L L L L C
Tstms S C C C C C L L C C C C C C L C C
Heat index 91 98 98 93
Max heat 98 99 90
High Surf Y Y Y Y
Date Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 Wed 08/27/25
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 74 86 73 89 73 87 71 82
Temp 76 76 84 80 75 75 87 83 78 75 86 81 76 73 81 78
Dewpt 74 74 74 75 74 74 74 74 72 69 67 68 69 66 67 67
PWind dir E E W W W NE NW NE
Wind char LT LT LT LT LT LT LT LT
Avg clouds B1 B1 B2 B2 B1 SC SC B1 FW FW FW FW FW FW SC B1
PoP 12hr 40 60 30 30 10 10 10 20
Rain shwrs C C C L C S S C S
Tstms C C S C C S S C S
$$
SCZ048-212000-
Beaufort Marine Corps Air Station-Beaufort SC
32.48N 80.72W Elev. 37 ft
146 AM EDT Thu Aug 21 2025
Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25
EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20
UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
Max/Min 92 74 85 74 82
Temp 74 75 84 90 90 82 79 77 76 76 82 83 81 77 76 75 75 75 79 81 80 77
Dewpt 70 71 73 74 74 75 75 75 74 75 75 75 76 75 75 74 74 74 75 75 75 74
RH 87 87 70 60 60 79 88 94 94 97 79 77 85 94 97 97 97 97 88 82 85 90
Wind dir NW NW N NW W S SW SW N NE E E E E E E E NE E E E E
Wind spd 3 4 5 4 4 2 2 2 2 5 8 9 9 5 3 3 4 5 6 8 8 5
Clouds FW FW FW SC B1 SC B1 B1 B1 B2 B2 B2 B2 B2 B2 B1 B2 B2 B2 B2 B2 B2
PoP 12hr 30 40 70 50 70
QPF 12hr 0 0.25 0.49 0.21 0.51
Snow 12hr 00-00 00-00 00-00
Rain shwrs C C C C C C C L L C C C C C C L L C
Tstms C C C C C C C L L C C C C C C L L C
Heat index 90 99 99 90
Max heat 99 101 90 90
High Surf Y Y Y Y
Date Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 Wed 08/27/25
EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
Min/Max 72 86 72 90 71 88 70 83
Temp 74 74 84 77 74 74 88 81 75 72 87 79 74 72 83 77
Dewpt 73 73 74 74 73 73 73 73 71 66 66 68 67 65 66 67
PWind dir NE E W W W NW W NE
Wind char LT LT LT LT LT LT LT LT
Avg clouds B2 B1 B1 B2 B1 SC SC SC FW FW FW FW FW FW SC SC
PoP 12hr 40 60 20 30 5 10 5 20
Rain shwrs C C C L S C S
Tstms C S S C S C S
$$
SCZ043-212000-
Walterboro-Inland Colleton SC
32.91N 80.67W Elev. 98 ft
146 AM EDT Thu Aug 21 2025
Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25
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 72 83 71 81
Temp 71 73 83 88 88 81 77 75 73 74 79 81 79 74 73 72 71 72 78 79 79 74
Dewpt 69 71 72 71 72 73 74 73 72 74 75 74 74 74 73 72 71 72 74 73 73 73
RH 93 93 70 57 59 77 90 94 97100 88 79 85100100100100100 88 82 82 97
Wind dir NW N N NW N NW S W N NE E E E E E E NE NE E E E E
Wind spd 3 4 5 5 4 2 1 1 2 6 8 8 8 3 2 2 3 4 6 6 6 4
Clouds SC FW FW SC SC SC B1 B1 SC B1 B1 B2 B2 B2 B2 B2 B1 B2 B2 B2 B2 B2
PoP 12hr 20 40 70 40 60
QPF 12hr 0 0.06 0.49 0.09 0.31
Snow 12hr 00-00 00-00 00-00
Rain shwrs S S C C S C C L L C C C C C C L L C
Tstms S S C C S C C L L C C C S S C L C C
Heat index 94 95
Max heat 94 96
Date Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 Wed 08/27/25
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 69 85 69 89 68 86 66 82
Temp 71 71 83 76 71 71 87 79 73 70 84 76 70 68 80 73
Dewpt 71 71 72 73 71 71 71 70 68 65 63 65 65 64 64 66
PWind dir NE E W W NW N N N
Wind char LT LT LT LT LT LT LT LT
Avg clouds B1 B1 B1 B2 SC SC SC SC FW FW FW FW FW SC SC B1
PoP 12hr 30 60 10 20 5 10 5 20
Rain shwrs C S S L S S
Tstms C S C S S
$$
GAZ099-212000-
Metter-Candler GA
32.40N 82.06W Elev. 197 ft
146 AM EDT Thu Aug 21 2025
Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25
EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20
UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
Max/Min 94 73 88 71 85
Temp 74 75 86 91 90 82 77 75 74 75 82 86 83 77 74 73 73 73 78 83 81 76
Dewpt 71 71 73 72 72 73 74 73 73 73 75 74 74 74 73 73 73 72 74 73 74 74
RH 90 87 65 54 56 74 90 94 97 94 79 68 74 90 97100100 97 88 72 79 94
Wind dir N NW NW W N N S W SE SE E E E E E E NE NE E E E E
Wind spd 2 2 2 3 3 2 1 1 1 2 4 5 8 3 2 2 2 2 4 5 5 2
Clouds CL FW FW B1 B1 B1 B1 SC B1 B1 B1 OV OV B2 B2 B1 B1 B2 B2 B2 B2 B1
PoP 12hr 50 50 80 50 80
QPF 12hr 0.02 0.04 0.91 0.45 0.30
Snow 12hr 00-00 00-00 00-00
Rain shwrs C C C C S S C C D D C C C C C C D D C
Tstms C C C S S S C D D C S C L L C
Heat index 93 99 97 94 90
Max heat 100 101 94 94
Date Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 Wed 08/27/25
EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
Min/Max 70 86 71 91 68 89 67 84
Temp 72 72 84 78 73 72 89 81 72 69 87 79 70 69 82 76
Dewpt 72 72 72 73 72 72 71 69 64 61 62 63 63 63 64 64
PWind dir NE N W NW NW N N N
Wind char LT LT LT LT LT LT LT LT
Avg clouds B1 B1 B1 B2 SC SC FW FW FW FW FW FW FW SC SC B1
PoP 12hr 30 60 10 10 0 5 0 20
Rain shwrs C S L S
Tstms C S C S
$$
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