Point Forecast Matrices
Issued by NWS Charleston, SC
Issued by NWS Charleston, SC
446
FOUS52 KCHS 200541
PFMCHS
Point Forecast Matrices
National Weather Service Charleston SC
141 AM EDT Wed Aug 20 2025
SCZ050-202000-
Charleston International Airport-Charleston SC
32.91N 80.03W Elev. 45 ft
141 AM EDT Wed Aug 20 2025
Date Wed 08/20/25 Thu 08/21/25 Fri 08/22/25
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 74 93 75 87
Temp 74 75 83 88 88 83 80 77 75 76 85 90 91 84 79 78 76 76 83 84 82 78
Dewpt 73 72 72 71 71 72 72 72 71 71 71 71 70 73 74 74 73 73 74 73 74 73
RH 97 90 70 57 57 70 77 85 87 85 63 54 50 70 85 88 90 90 74 70 77 85
Wind dir N N N N N N N NW NW NW NW NW NW NW SW W NE NE E E E E
Wind spd 9 10 12 13 12 9 8 8 9 10 11 11 10 6 5 5 5 8 9 10 11 6
Clouds FW SC SC B1 SC B1 FW FW FW FW FW SC SC B1 B1 B1 B1 B1 B1 B2 B2 B2
PoP 12hr 20 5 20 30 70
QPF 12hr 0 0 0 0.08 0.55
Snow 12hr 00-00 00-00 00-00
Rain shwrs S S C C C C C C L L C
Tstms S S C C C C S C L L C
Heat index 94 94 90 96 97 90 90 90
Max heat 94 95 96 98 90 90
High Surf Y Y Y Y Y Y Y Y Y Y Y Y Y
Date Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 Tue 08/26/25
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 73 85 72 87 73 90 71 88
Temp 75 75 82 77 74 74 84 79 75 75 88 81 75 72 86 79
Dewpt 73 73 72 72 72 72 72 73 72 72 71 72 69 65 63 66
PWind dir E E NE E SW W W NE
Wind char LT GN LT LT LT LT LT LT
Avg clouds B1 B1 B2 B2 B1 B1 B1 B1 SC SC SC B1 FW SC FW SC
PoP 12hr 50 70 30 50 20 30 5 20
Rain shwrs C C L L C C C C S C S
Tstms C C C C C C S C S C S
$$
GAZ118-202000-
Savannah International Airport-Inland Chatham GA
32.12N 81.20W Elev. 50 ft
141 AM EDT Wed Aug 20 2025
Date Wed 08/20/25 Thu 08/21/25 Fri 08/22/25
EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20
UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
Max/Min 92 74 94 75 88
Temp 74 75 84 90 90 84 79 76 75 75 87 92 92 83 79 77 75 76 83 86 82 77
Dewpt 73 73 75 73 73 72 72 71 70 72 73 72 73 74 75 74 74 75 76 76 77 75
RH 97 94 74 58 58 67 79 85 84 90 63 52 54 74 88 90 97 97 80 72 85 94
Wind dir N N N N N N NW NW NW NW NW NW W W SW SW NW NE E E E E
Wind spd 5 6 9 9 8 4 3 3 4 5 6 6 6 4 3 2 2 4 5 6 8 4
Clouds FW FW FW SC SC SC FW FW SC SC FW SC SC B1 B1 SC SC B1 B1 OV OV B2
PoP 12hr 10 5 30 40 80
QPF 12hr 0 0 0.03 0.04 0.95
Snow 12hr 00-00 00-00 00-00
Rain shwrs C C C C C C D D L
Tstms C C C C C D L C
Heat index 92 98 98 90 94100101 90 91 96 90
Max heat 98 100 100 101 96 94
Date Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 Tue 08/26/25
EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
Min/Max 73 86 72 88 73 92 70 90
Temp 75 75 84 78 74 73 86 80 75 74 90 81 74 71 88 79
Dewpt 74 74 76 75 73 72 75 74 73 73 73 72 68 66 66 67
PWind dir E E NE NW SW W W N
Wind char LT LT LT LT LT LT LT LT
Avg clouds B2 B1 B1 B2 B1 B1 B1 B2 B1 SC SC SC SC FW FW SC
PoP 12hr 60 80 30 60 10 30 5 20
Rain shwrs L C C D C S C L C S
Tstms C C C L C S S C C S
$$
SCZ050-202000-
Charleston Waterfront-Charleston SC
32.78N 79.94W Elev. 10 ft
141 AM EDT Wed Aug 20 2025
Date Wed 08/20/25 Thu 08/21/25 Fri 08/22/25
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 77 92 76 86
Temp 77 77 84 88 88 84 81 79 77 78 85 90 90 85 82 79 78 79 83 83 82 80
Dewpt 74 75 75 75 75 74 74 73 72 72 73 73 74 75 75 76 75 75 76 76 76 75
RH 90 94 74 66 66 72 79 82 85 82 67 58 60 72 79 91 91 88 80 80 82 85
Wind dir N N N N N N N NW NW NW NW NW NW W SW W NE NE E E E E
Wind spd 9 10 12 13 12 9 8 6 8 11 11 10 9 5 4 4 4 6 10 11 11 6
Clouds FW SC B1 B1 B1 B1 SC FW FW FW FW FW FW B1 B1 B1 B1 B1 B1 B2 B2 B1
PoP 12hr 20 5 10 40 70
QPF 12hr 0 0 0 0.08 0.47
Snow 12hr 00-00 00-00 00-00
Rain shwrs S C C C C C C L L C
Tstms S C C C C C C L L C
Heat index 92 98 98 91 92 98 99 94 91 91
Max heat 98 99 90 98 100 92 91 90
High Surf Y Y Y Y Y Y Y Y Y Y Y Y Y
Date Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 Tue 08/26/25
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 76 84 74 87 74 89 73 87
Temp 77 78 82 79 76 76 85 80 77 76 87 82 77 73 85 80
Dewpt 75 75 75 73 74 74 73 74 74 74 74 75 72 67 65 68
PWind dir E E E E W W W NE
Wind char LT GN LT LT LT LT LT LT
Avg clouds B1 B1 B2 B2 B1 B1 B1 B1 SC SC SC SC SC SC SC SC
PoP 12hr 50 60 40 50 20 20 10 10
Rain shwrs C C L L C C C C S S S
Tstms C C C L C C C C S S S
$$
SCZ048-202000-
Beaufort Marine Corps Air Station-Beaufort SC
32.48N 80.72W Elev. 37 ft
141 AM EDT Wed Aug 20 2025
Date Wed 08/20/25 Thu 08/21/25 Fri 08/22/25
EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20
UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
Max/Min 90 74 93 75 87
Temp 74 75 83 88 88 83 79 77 75 75 85 91 90 83 79 77 75 76 83 85 82 77
Dewpt 73 73 75 74 73 72 72 71 70 72 72 72 73 74 75 75 74 75 76 76 76 75
RH 97 94 77 63 61 70 79 82 84 90 65 54 58 74 88 94 97 97 80 75 82 94
Wind dir N N N N N N NW NW NW NW NW NW W SW SW W N NE E SE E E
Wind spd 5 8 10 10 9 5 4 4 5 6 9 8 6 4 3 3 4 5 6 8 8 4
Clouds FW FW SC SC SC SC SC FW FW FW FW SC SC B1 B1 SC SC B1 B1 B2 B2 B2
PoP 12hr 10 5 20 40 80
QPF 12hr 0 0 0 0.07 0.67
Snow 12hr 00-00 00-00 00-00
Rain shwrs S S C C S S C C D D L
Tstms S S C C S S C D L C
Heat index 90 97 96 91 99 98 90 91 94
Max heat 97 97 99 100 94 94
High Surf Y Y Y Y Y Y Y Y Y Y Y Y Y
Date Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 Tue 08/26/25
EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
Min/Max 74 84 72 87 73 90 71 88
Temp 76 75 82 77 74 73 86 79 76 75 88 81 76 71 86 79
Dewpt 74 74 76 74 73 73 74 74 73 73 73 72 68 66 65 68
PWind dir E E NE SW SW W W NE
Wind char LT LT LT LT LT LT LT LT
Avg clouds B2 B1 B2 B2 B1 B1 B1 B2 SC SC SC SC SC FW FW FW
PoP 12hr 60 70 30 60 20 20 5 10
Rain shwrs L C C L C C C L S S
Tstms C C C L C S S C S S
$$
SCZ043-202000-
Walterboro-Inland Colleton SC
32.91N 80.67W Elev. 98 ft
141 AM EDT Wed Aug 20 2025
Date Wed 08/20/25 Thu 08/21/25 Fri 08/22/25
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 89 71 92 72 85
Temp 72 73 81 87 87 81 76 74 72 73 84 90 89 82 77 75 73 74 82 83 81 75
Dewpt 72 73 74 72 71 72 72 71 70 71 72 70 70 73 73 73 72 73 75 74 74 74
RH 100100 79 61 59 74 87 90 93 93 67 52 54 74 87 94 97 97 79 74 79 97
Wind dir N N N N N N N NW NW NW NW NW NW N SW NW N NE E E E E
Wind spd 5 6 10 10 9 5 3 3 5 6 9 9 6 3 2 2 3 5 6 8 8 3
Clouds FW SC B1 SC B1 SC FW FW FW FW FW SC SC B1 B1 SC SC B1 B1 B2 B2 B2
PoP 12hr 10 5 20 30 70
QPF 12hr 0 0 0.02 0.16 0.51
Snow 12hr 00-00 00-00 00-00
Rain shwrs S S C C S S C C L L C
Tstms S S C C S C L L C
Heat index 94 93 90 96 94 90
Max heat 94 95 96 97 90
Date Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 Tue 08/26/25
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 82 69 86 70 88 67 86
Temp 73 72 81 75 71 71 84 77 73 72 86 78 72 68 84 76
Dewpt 73 72 73 73 71 71 73 73 72 72 71 70 67 64 62 66
PWind dir E E NE NE SW W W N
Wind char LT LT LT LT LT LT LT LT
Avg clouds B1 B1 B2 B2 B1 B1 B1 B1 SC SC SC SC SC SC FW SC
PoP 12hr 40 70 30 50 10 20 5 10
Rain shwrs C C C L C S S C S
Tstms C C S C C S C S
$$
GAZ099-202000-
Metter-Candler GA
32.40N 82.06W Elev. 197 ft
141 AM EDT Wed Aug 20 2025
Date Wed 08/20/25 Thu 08/21/25 Fri 08/22/25
EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20
UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
Max/Min 92 73 95 73 90
Temp 74 75 84 90 90 84 78 75 74 75 86 93 92 83 78 76 74 75 83 88 85 78
Dewpt 73 72 73 71 70 70 70 70 70 72 73 71 72 74 74 73 72 73 75 74 74 74
RH 97 90 70 54 52 63 76 84 87 90 65 49 52 74 88 90 93 94 77 63 70 88
Wind dir N N N N N N NW NW NW NW NW NW NW NW S SW N NE E SE SE E
Wind spd 2 3 6 8 6 3 2 2 2 2 4 6 5 3 2 1 1 2 4 5 5 2
Clouds FW FW FW SC SC FW FW FW FW FW FW SC SC B1 B1 SC SC SC SC B2 B2 B2
PoP 12hr 10 5 30 30 80
QPF 12hr 0 0 0 0.13 0.64
Snow 12hr 00-00 00-00 00-00
Rain shwrs C C C C S S D D C
Tstms C C C C S D L C
Heat index 90 96 96 93100100 90 90 97 93
Max heat 96 97 100 101 97 97
Date Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 Tue 08/26/25
EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
Min/Max 72 85 71 88 71 92 68 89
Temp 73 73 83 77 72 72 86 80 74 73 89 81 73 68 87 79
Dewpt 73 73 74 73 72 71 73 73 72 71 71 69 65 62 61 64
PWind dir E E NE NW SW NW NW N
Wind char LT LT LT LT LT LT LT LT
Avg clouds B1 B1 B2 B2 B1 B1 B1 B1 SC FW FW SC FW FW FW FW
PoP 12hr 50 70 20 50 5 10 0 10
Rain shwrs C C C L S S C
Tstms C S S L S C
$$
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