Point Forecast Matrices
Issued by NWS Charleston, SC
Issued by NWS Charleston, SC
772
FOUS52 KCHS 180935
PFMCHS
Point Forecast Matrices
National Weather Service Charleston SC
534 AM EDT Mon Aug 18 2025
SCZ050-182000-
Charleston International Airport-Charleston SC
32.91N 80.03W Elev. 45 ft
534 AM EDT Mon Aug 18 2025
Date Mon 08/18/25 Tue 08/19/25 Wed 08/20/25
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 93 75 91 75 90
Temp 74 85 91 91 82 78 77 76 76 84 88 87 81 78 76 75 76 82 88 88 83
Dewpt 71 71 70 71 72 73 73 72 74 73 73 73 73 73 74 72 73 72 72 72 72
RH 90 63 50 52 72 85 87 87 94 70 61 63 77 85 94 90 90 72 59 59 70
Wind dir N N SE SE S S N N NE NE NE NE NE NE N N N N N N N
Wind spd 3 3 4 8 5 2 2 4 8 12 12 13 11 9 9 10 12 14 14 16 11
Clouds SC FW FW CL FW FW FW SC FW FW B1 B1 FW FW FW FW FW FW SC SC FW
PoP 12hr 10 5 30 5 30
QPF 12hr 0 0 0.08 0 0
Snow 12hr 00-00 00-00 00-00
Rain shwrs C C C C
Tstms C C C C
Heat index 90 97 98 90 96 94 95 95
Max heat 97 98 96 96 95 96
Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25
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 91 75 87 74 86 74 87
Temp 77 76 89 82 77 77 85 80 75 76 83 78 75 75 85 79
Dewpt 72 72 70 73 73 73 73 72 72 72 72 72 73 73 73 73
PWind dir N N S E E SE SE SE
Wind char GN GN LT GN LT GN LT LT
Avg clouds FW FW FW SC SC SC B1 B1 B1 B1 B1 B2 B1 B1 B1 B2
PoP 12hr 5 20 20 50 40 60 40 60
Rain shwrs S S S C C C C C L C C C L
Tstms S S S C C C C C C C S C C
$$
GAZ118-182000-
Savannah International Airport-Inland Chatham GA
32.12N 81.20W Elev. 50 ft
534 AM EDT Mon Aug 18 2025
Date Mon 08/18/25 Tue 08/19/25 Wed 08/20/25
EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20
UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
Max/Min 92 73 91 74 91
Temp 74 83 90 90 82 77 75 74 74 85 89 89 81 77 76 74 75 82 89 90 84
Dewpt 73 75 73 72 72 74 74 72 73 74 73 74 74 74 74 73 73 74 73 72 73
RH 97 77 58 56 72 90 97 93 97 70 59 61 79 90 94 97 94 77 59 56 70
Wind dir N NE E SE SE SE NE N N NE NE E NE NE N N N N N N N
Wind spd 2 4 5 6 4 2 1 2 5 9 11 11 8 5 6 9 10 12 11 10 5
Clouds SC FW FW FW FW FW FW FW FW FW B1 B1 SC FW FW FW FW FW SC SC FW
PoP 12hr 10 5 30 5 20
QPF 12hr 0 0 0.07 0 0
Snow 12hr 00-00 00-00 00-00
Rain shwrs C C S S
Tstms C C S S
Obvis PF
Heat index 90 98 97 93 97 98 97 97 90
Max heat 98 98 97 98 97 99
Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25
EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
Min/Max 74 94 75 90 74 87 74 89
Temp 76 75 92 83 77 76 88 80 76 75 85 79 76 75 87 81
Dewpt 72 72 72 75 74 74 75 74 73 74 75 74 73 74 75 74
PWind dir N N SE E E SE S SW
Wind char LT LT LT LT LT LT LT LT
Avg clouds FW CL FW SC SC FW SC B2 B1 B1 B1 B2 B1 SC B1 B2
PoP 12hr 5 20 20 60 50 70 40 60
Rain shwrs S S S L C C C L C S C L
Tstms S S S L C S C L C S L
$$
SCZ050-182000-
Charleston Waterfront-Charleston SC
32.78N 79.94W Elev. 10 ft
534 AM EDT Mon Aug 18 2025
Date Mon 08/18/25 Tue 08/19/25 Wed 08/20/25
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 89 75 89
Temp 76 84 89 89 83 80 79 77 78 84 87 87 83 80 77 76 77 83 88 88 84
Dewpt 74 74 73 74 74 75 75 74 75 75 75 75 75 75 75 75 74 74 74 74 73
RH 94 72 59 61 74 85 88 90 91 74 68 68 77 85 94 97 90 74 63 63 70
Wind dir N NE SE SE S S NE N N NE E E NE NE NE N N N N N N
Wind spd 3 4 5 6 5 2 2 4 8 12 14 16 12 10 10 12 13 16 16 16 11
Clouds FW FW FW CL CL FW FW FW FW FW B1 B1 FW FW FW FW FW SC B1 B1 FW
PoP 12hr 5 5 30 10 30
QPF 12hr 0 0 0.05 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 91 97 98 90 92 96 96 90 96 97 90
Max heat 97 99 96 96 97 98
Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25
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 90 76 86 76 86 75 87
Temp 79 77 89 83 79 78 85 81 78 78 84 80 77 77 85 81
Dewpt 72 72 72 74 75 75 75 73 73 74 74 74 74 74 75 75
PWind dir N N SE E E SE SE S
Wind char GN GN LT GN LT GN LT LT
Avg clouds FW FW FW SC SC SC B1 B1 B1 B1 B1 B2 B1 B1 B1 B2
PoP 12hr 5 20 30 50 40 60 50 60
Rain shwrs S S C C C C C C L C C C L
Tstms S S C C C C C C C C C C C
$$
SCZ048-182000-
Beaufort Marine Corps Air Station-Beaufort SC
32.48N 80.72W Elev. 37 ft
534 AM EDT Mon Aug 18 2025
Date Mon 08/18/25 Tue 08/19/25 Wed 08/20/25
EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20
UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
Max/Min 91 74 90 74 90
Temp 74 84 90 89 81 78 76 74 76 84 88 87 81 78 76 74 75 82 88 88 83
Dewpt 73 73 71 72 73 74 74 73 74 75 74 75 75 75 74 73 73 74 73 73 73
RH 97 70 54 57 77 88 94 97 94 74 63 68 82 91 94 97 94 77 61 61 72
Wind dir N NE E SE S SE NE N NE NE NE E NE NE N N N N N N N
Wind spd 2 3 5 5 4 2 1 2 6 10 10 10 8 6 6 9 12 14 12 11 6
Clouds SC FW FW CL CL CL FW FW FW FW B1 B1 FW FW CL FW SC FW SC SC FW
PoP 12hr 10 5 30 5 20
QPF 12hr 0 0 0.06 0 0
Snow 12hr 00-00 00-00 00-00
Rain shwrs C C S S
Tstms C C S S
Heat index 90 96 96 92 97 96 96 96
Max heat 96 96 97 97 96 97
Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25
EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
Min/Max 74 91 75 88 74 85 74 88
Temp 77 76 90 82 78 76 86 80 76 76 84 78 76 75 86 79
Dewpt 72 73 72 75 74 74 75 74 73 74 75 74 73 74 75 75
PWind dir N N SE E E E E SW
Wind char LT GN LT LT LT LT LT LT
Avg clouds FW CL FW SC SC SC B1 B2 B1 B1 B1 B2 B1 B1 B1 B2
PoP 12hr 5 20 20 60 40 70 40 60
Rain shwrs S S S C L C C C L C C C L
Tstms S S S C L C C S L C S S C
$$
SCZ043-182000-
Walterboro-Inland Colleton SC
32.91N 80.67W Elev. 98 ft
534 AM EDT Mon Aug 18 2025
Date Mon 08/18/25 Tue 08/19/25 Wed 08/20/25
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 72 89 72 88
Temp 71 83 90 90 81 76 74 72 74 84 87 87 79 76 74 72 74 82 87 87 81
Dewpt 71 72 70 69 72 73 72 71 73 73 73 73 74 74 74 72 73 73 72 71 72
RH 100 70 52 50 74 90 93 97 97 70 63 63 85 94100100 97 74 61 59 74
Wind dir N N E SE S S NE N NE NE NE NE NE NE N N N N N N N
Wind spd 1 2 3 4 4 1 1 2 5 9 10 9 5 4 5 8 10 11 11 11 6
Clouds SC FW FW FW FW FW FW FW FW FW B1 B1 SC FW FW FW FW SC SC SC FW
PoP 12hr 10 10 30 5 20
QPF 12hr 0 0 0.09 0 0
Snow 12hr 00-00 00-00 00-00
Rain shwrs C C S S
Tstms C C S S
Heat index 96 95 90 94 94 94 93
Max heat 96 97 94 96 94 94
Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25
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 90 72 86 71 84 71 86
Temp 74 74 89 81 75 74 84 77 73 73 82 76 73 73 84 76
Dewpt 71 72 71 73 73 74 74 74 72 72 74 73 72 73 73 74
PWind dir N N SE E E SE SE W
Wind char LT GN LT LT LT LT LT LT
Avg clouds FW CL FW SC SC SC SC B2 B1 B1 B1 B2 B1 B1 B1 B2
PoP 12hr 0 20 20 60 40 70 30 60
Rain shwrs S S S L C C C L C S C L
Tstms S S S L C S S C C S C
$$
GAZ099-182000-
Metter-Candler GA
32.40N 82.06W Elev. 197 ft
534 AM EDT Mon Aug 18 2025
Date Mon 08/18/25 Tue 08/19/25 Wed 08/20/25
EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20
UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
Max/Min 94 72 93 73 92
Temp 73 84 92 92 84 77 74 72 73 85 91 90 83 77 75 73 75 84 90 90 84
Dewpt 72 72 68 67 70 70 70 70 70 72 71 72 73 73 73 72 73 73 71 70 71
RH 97 67 46 44 63 79 87 93 90 65 52 56 72 87 94 97 94 70 54 52 65
Wind dir N NE E SE SE SE N N N NE NE NE NE NE NE N N N N N N
Wind spd 1 3 5 5 3 2 0 1 3 6 9 8 4 3 3 4 6 9 10 9 4
Clouds SC FW FW FW CL CL CL CL FW FW SC SC SC FW FW FW FW FW FW FW FW
PoP 12hr 5 5 20 5 10
QPF 12hr 0 0 0.03 0 0
Snow 12hr 00-00 00-00 00-00
Rain shwrs S S
Tstms S S
Obvis PF
Heat index 90 96 96 91 98 97 90 96 96
Max heat 96 97 98 99 96 97
Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25
EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
Min/Max 73 94 73 91 73 88 72 89
Temp 75 75 92 84 76 75 89 79 74 74 85 79 74 74 87 81
Dewpt 71 71 70 73 73 73 72 74 73 72 74 73 73 72 73 72
PWind dir N N SE SE E SE SE NW
Wind char LT LT LT LT LT LT LT LT
Avg clouds FW CL FW SC SC FW SC B2 B1 B1 B1 B2 B1 SC B1 B1
PoP 12hr 5 20 20 60 40 70 30 50
Rain shwrs S S S L C S C L C S C
Tstms S S S L C S L C S C
$$
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