Point Forecast Matrices
Issued by NWS Charleston, SC
Issued by NWS Charleston, SC
643
FOUS52 KCHS 181741
PFMCHS
Point Forecast Matrices
National Weather Service Charleston SC
141 PM EDT Mon Aug 18 2025
SCZ050-190800-
Charleston International Airport-Charleston SC
32.91N 80.03W Elev. 45 ft
141 PM EDT Mon Aug 18 2025
Date 08/18/25 Tue 08/19/25 Wed 08/20/25 Thu
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 75 89 74 90 74
Temp 90 82 79 77 76 77 84 87 87 81 78 76 75 76 82 88 89 83 79 77 75 76
Dewpt 71 73 73 73 73 74 73 73 73 74 74 73 73 73 73 72 72 72 72 72 71 71
RH 54 74 82 87 90 90 70 63 63 79 88 90 94 90 74 59 57 70 79 85 87 85
Wind dir SE S E NE NE N NE NE E NE NE N N N N N N N N N N N
Wind spd 6 5 2 2 4 5 10 10 11 9 8 8 10 11 13 13 13 10 9 8 9 10
Wind gust 24
Clouds CL CL FW FW FW FW FW B1 B1 FW FW CL FW SC SC B1 B1 SC FW FW FW FW
PoP 12hr 5 50 5 30 5
QPF 12hr 0 0.02 0 0 0
Snow 12hr 00-00 00-00 00-00
Rain shwrs C C C C
Tstms C C C C
Heat index 96 90 94 94 95 96
Max heat 99 94 96 95 96
High Surf Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y
Date 08/21 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25
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 74 88 73 86 73 88 73 89
Temp 88 82 77 76 85 79 76 75 84 79 75 75 85 80 75 75 86 80
Dewpt 70 72 72 71 70 71 71 71 70 71 71 71 71 72 73 72 72 73
PWind dir N E E E SE SE SE SW W
Wind char GN LT LT LT GN LT LT LT LT
Avg clouds FW FW FW SC B1 B1 B1 B1 B1 B1 B1 B1 B1 B2 B1 SC SC B1
PoP 12hr 10 20 40 30 50 40 60 30 40
Rain shwrs S C C S C C C C C C L C S S C
Tstms S C C S S S C C C C C C S S C
$$
GAZ118-190800-
Savannah International Airport-Inland Chatham GA
32.12N 81.20W Elev. 50 ft
141 PM EDT Mon Aug 18 2025
Date 08/18/25 Tue 08/19/25 Wed 08/20/25 Thu
EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08
UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12
Min/Max 74 92 74 91 74
Temp 90 81 77 75 74 75 84 90 88 81 77 76 74 75 83 89 90 85 79 76 74 75
Dewpt 73 73 74 74 73 74 76 75 75 75 74 73 73 73 75 74 73 72 72 72 71 71
RH 58 77 90 97 97 97 77 62 66 82 90 90 97 94 77 61 58 65 79 87 90 87
Wind dir SE SE SE NE N N NE NE E E NE N N N N N N N N NW N N
Wind spd 6 3 2 1 2 4 6 9 9 5 3 4 5 9 10 10 9 5 4 3 4 5
Clouds FW FW FW FW SC FW FW SC B1 SC FW FW FW FW SC SC SC SC FW CL CL CL
PoP 12hr 5 40 5 20 5
QPF 12hr 0 0.02 0 0 0
Snow 12hr 00-00 00-00 00-00
Rain shwrs S C S S
Tstms S C S S
Heat index 98 93101 98 90 98 98 91
Max heat 100 101 101 98 99
Date 08/21 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25
EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
Max/Min 92 74 88 74 85 73 88 73 91
Temp 90 83 77 76 86 79 76 75 84 80 75 74 86 80 75 74 90 82
Dewpt 73 74 73 73 74 74 73 73 74 73 72 73 74 74 73 73 74 75
PWind dir N SE E E E E SE SW W
Wind char LT LT LT LT LT LT LT LT LT
Avg clouds FW SC SC SC B1 B2 B1 B1 B1 B2 B1 SC SC B2 B1 SC SC B1
PoP 12hr 20 20 60 40 60 40 60 30 40
Rain shwrs S S S C L C C C L C S C L C S C
Tstms S S S S L C S C L C S L C S C
$$
SCZ050-190800-
Charleston Waterfront-Charleston SC
32.78N 79.94W Elev. 10 ft
141 PM EDT Mon Aug 18 2025
Date 08/18/25 Tue 08/19/25 Wed 08/20/25 Thu
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 89 76 89 75
Temp 88 83 80 79 78 78 84 87 87 83 80 78 77 77 83 87 88 85 81 78 76 76
Dewpt 75 75 76 75 75 76 76 76 76 76 76 76 75 75 75 76 75 75 74 74 73 73
RH 66 77 88 88 91 94 77 70 70 80 88 94 94 94 77 70 66 72 79 88 90 90
Wind dir SE SE SE NE NE NE NE E E NE NE N N N N N N N N N N N
Wind spd 6 4 2 2 4 5 10 12 13 10 8 8 10 12 13 13 13 9 9 8 9 10
Clouds CL FW FW FW FW FW SC B1 B1 FW FW FW FW SC SC B1 B1 SC FW FW FW FW
PoP 12hr 5 40 10 30 5
QPF 12hr 0 0.01 0 0 0
Snow 12hr 00-00 00-00 00-00
Rain shwrs C C S S C C
Tstms C C S C C
Heat index 98 90 93 98 98 91 90 98 98 94
Max heat 101 98 100 98 99 92
High Surf Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y
Date 08/21 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25
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 89 76 86 76 85 75 86 75 88
Temp 87 83 79 78 85 80 78 78 84 81 77 77 85 81 77 77 87 81
Dewpt 73 74 74 73 74 73 72 73 73 73 73 74 74 74 75 74 75 76
PWind dir N E E E E SE S SW SW
Wind char GN LT GN LT GN LT LT LT LT
Avg clouds FW FW FW SC B1 B1 B1 B1 B1 B1 B1 B1 B1 B2 B1 B1 B1 B1
PoP 12hr 10 20 40 30 50 40 60 40 40
Rain shwrs S C C C C C C C C C L C C C C
Tstms S C C C C C C C C C C C S S C
$$
SCZ048-190800-
Beaufort Marine Corps Air Station-Beaufort SC
32.48N 80.72W Elev. 37 ft
141 PM EDT Mon Aug 18 2025
Date 08/18/25 Tue 08/19/25 Wed 08/20/25 Thu
EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08
UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12
Min/Max 74 90 74 90 74
Temp 88 81 78 76 75 76 84 88 86 81 78 76 74 75 83 88 89 84 79 77 75 76
Dewpt 73 74 75 74 73 74 76 75 75 75 74 73 73 73 75 74 73 73 72 72 71 72
RH 61 79 91 94 94 94 77 66 70 82 88 90 97 94 77 63 59 70 79 85 87 87
Wind dir SE S SE E N N NE E E NE NE N N N N N N N N N N N
Wind spd 5 3 2 1 2 4 6 8 8 5 4 5 8 10 12 10 10 5 5 5 5 6
Clouds CL FW FW FW FW SC FW B1 B1 SC FW CL FW SC SC SC SC FW FW CL CL FW
PoP 12hr 0 40 5 20 5
QPF 12hr 0 0.03 0 0 0
Snow 12hr 00-00 00-00 00-00
Rain shwrs C C S S
Tstms C C S S
Heat index 96 93 98 95 90 97 97 90
Max heat 97 98 98 97 98
High Surf Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y
Date 08/21 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25
EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
Max/Min 90 74 88 75 85 74 86 73 89
Temp 88 82 78 76 86 79 76 76 84 79 76 75 86 80 76 75 88 81
Dewpt 73 74 74 73 74 74 72 72 73 73 72 72 74 74 73 73 74 75
PWind dir N SE E E E SE SE SW SW
Wind char LT LT LT LT LT LT LT LT LT
Avg clouds FW FW SC SC SC B1 B1 B1 B1 B2 B1 B1 B1 B2 B1 SC SC B1
PoP 12hr 10 20 50 40 60 40 60 30 40
Rain shwrs S S S C C C C L C C C L C S S C
Tstms S S S C C C S L C S S C C S C
$$
SCZ043-190800-
Walterboro-Inland Colleton SC
32.91N 80.67W Elev. 98 ft
141 PM EDT Mon Aug 18 2025
Date 08/18/25 Tue 08/19/25 Wed 08/20/25 Thu
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 72 89 71 89 72
Temp 90 81 76 74 72 74 83 87 85 79 75 73 72 73 82 87 88 82 77 74 73 74
Dewpt 70 73 74 73 72 74 73 73 74 75 74 73 72 73 73 72 71 72 72 72 71 72
RH 52 77 94 97100100 72 63 70 88 97100100100 74 61 57 72 85 93 93 93
Wind dir SE S E E N N NE N NE NE NE N N N N N N N N N N N
Wind spd 3 3 1 1 2 3 6 8 6 3 2 3 6 9 10 10 10 5 4 4 5 5
Clouds CL CL FW FW FW FW SC B1 B1 SC FW FW FW SC SC FW FW FW FW FW CL FW
PoP 12hr 5 50 0 20 0
QPF 12hr 0 0.16 0 0 0
Snow 12hr 00-00 00-00 00-00
Rain shwrs C C S S
Tstms C C S S
Heat index 96 94 93 94 94
Max heat 97 94 95 94 95
Date 08/21 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25
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 89 71 86 70 83 70 86 70 86
Temp 87 81 75 73 84 77 72 72 81 77 72 72 84 77 72 72 85 78
Dewpt 71 72 73 73 72 73 71 71 72 72 71 71 72 73 72 72 72 73
PWind dir N E E E SE SE SE SW W
Wind char LT LT LT LT LT LT LT LT LT
Avg clouds FW FW SC SC SC B1 B1 B1 B1 B1 B1 B1 SC B2 SC SC SC B1
PoP 12hr 10 20 50 30 50 30 60 20 30
Rain shwrs S S S C C C C C C S S L S C
Tstms S S S C C S S C C S S C S C
$$
GAZ099-190800-
Metter-Candler GA
32.40N 82.06W Elev. 197 ft
141 PM EDT Mon Aug 18 2025
Date 08/18/25 Tue 08/19/25 Wed 08/20/25 Thu
EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08
UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12
Min/Max 72 93 73 92 72
Temp 92 84 77 74 73 74 85 91 89 81 77 75 74 74 84 90 91 85 78 75 74 74
Dewpt 67 70 71 71 70 71 72 72 72 74 74 73 73 73 73 71 70 71 71 71 70 71
RH 44 63 82 90 90 90 65 54 57 79 90 94 97 97 70 54 50 63 79 87 87 90
Wind dir SE SE SE SE N N NE NE NE E NE NE N N N N N N N N N N
Wind spd 5 3 2 1 1 2 5 6 5 3 2 2 3 5 8 9 6 3 2 2 2 2
Clouds FW CL CL CL FW FW FW SC B1 SC FW FW FW FW FW FW FW FW CL CL CL CL
PoP 12hr 5 40 5 10 5
QPF 12hr 0 0.01 0 0 0
Snow 12hr 00-00 00-00 00-00
Rain shwrs S C
Tstms S C
Heat index 96 91 99 96 90 96 97 90
Max heat 98 99 99 96 97
Date 08/21 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25
EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
Max/Min 93 73 88 72 86 71 89 72 90
Temp 91 84 75 75 86 78 74 73 84 79 73 72 87 80 74 73 88 82
Dewpt 70 71 72 72 72 73 72 71 72 72 71 71 72 72 72 71 71 71
PWind dir N SE E E E SE SE SW NW
Wind char LT LT LT LT LT LT LT LT LT
Avg clouds FW SC SC SC B1 B2 B1 B1 B1 B2 B1 SC SC B1 SC SC SC SC
PoP 12hr 20 20 60 40 60 30 50 20 20
Rain shwrs S S S L C S C L C S C S S
Tstms S S S L C S L S S C S S
$$
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