Point Forecast Matrices
Issued by NWS Charleston, SC
Issued by NWS Charleston, SC
359
FOUS52 KCHS 171747
PFMCHS
Point Forecast Matrices
National Weather Service Charleston SC
146 PM EDT Sun Aug 17 2025
SCZ050-180800-
Charleston International Airport-Charleston SC
32.91N 80.03W Elev. 45 ft
146 PM EDT Sun Aug 17 2025
Date 08/17/25 Mon 08/18/25 Tue 08/19/25 Wed
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 94 75 90 74
Temp 88 81 77 75 73 74 86 91 91 83 78 77 76 77 84 88 87 81 78 76 74 76
Dewpt 72 72 72 72 71 72 70 70 70 71 73 73 73 73 72 72 73 73 73 73 72 72
RH 59 74 85 90 93 93 59 50 50 67 85 87 90 87 67 59 63 77 85 90 93 87
Wind dir SE SE SE W N N N E SE SE SE NE N NE NE NE E NE NE N N N
Wind spd 6 4 1 1 1 2 2 3 6 5 2 2 3 5 9 10 10 8 5 5 8 10
Clouds SC FW CL FW FW FW CL FW CL FW FW FW FW FW FW B1 B1 FW FW FW FW FW
PoP 12hr 5 5 0 30 5
QPF 12hr 0 0 0 0.04 0
Snow 12hr 00-00 00-00 00-00
Rain shwrs S C C
Tstms S C C
Heat index 95 91 97 97 90 95 94
Max heat 98 97 98 95 96
Date 08/20 Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25
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 91 74 87 74 86 73 88
Temp 88 82 77 76 89 81 77 76 85 80 76 76 84 79 75 75 85 79
Dewpt 72 73 73 72 71 74 74 74 73 73 73 73 73 73 73 73 72 73
PWind dir N N NE SE E E SE S SW
Wind char GN LT LT LT LT LT LT LT LT
Avg clouds FW SC FW FW FW B1 B1 SC B1 B2 B1 B1 B1 B2 B1 B1 B1 B2
PoP 12hr 20 5 30 30 60 40 70 40 60
Rain shwrs S C C S C L C C C L C C C L
Tstms S C C S C L C S C C C S S C
$$
GAZ118-180800-
Savannah International Airport-Inland Chatham GA
32.12N 81.20W Elev. 50 ft
146 PM EDT Sun Aug 17 2025
Date 08/17/25 Mon 08/18/25 Tue 08/19/25 Wed
EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08
UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12
Min/Max 72 92 73 92 74
Temp 86 80 76 74 73 73 84 90 90 82 77 75 74 75 85 90 90 82 78 76 74 75
Dewpt 77 76 75 73 73 73 74 72 71 72 73 73 73 73 74 73 74 75 74 73 73 73
RH 75 88 97 97100100 72 56 54 72 87 94 97 94 70 58 60 79 88 90 97 94
Wind dir E E SE N N N NE E SE SE SE E N N NE NE E E NE N N N
Wind spd 5 2 2 1 1 2 3 5 6 4 2 1 2 3 6 8 8 5 3 2 4 5
Clouds B1 SC FW FW SC SC FW FW FW FW CL CL FW FW FW SC SC SC FW FW FW CL
PoP 12hr 10 10 0 30 10
QPF 12hr 0 0 0 0.02 0
Snow 12hr 00-00 00-00 00-00
Rain shwrs C C C
Tstms C C C
Obvis PF PF
Heat index 97 91 97 96 93 98 99
Max heat 99 97 98 98 101
Date 08/20 Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25
EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
Max/Min 92 74 93 74 89 74 87 73 88
Temp 90 84 77 76 91 83 77 76 87 81 76 75 85 81 76 75 86 81
Dewpt 74 74 73 73 74 75 74 74 76 75 73 73 75 75 74 73 75 75
PWind dir N NW N SW E E E S SW
Wind char LT LT LT LT LT LT LT LT LT
Avg clouds FW SC SC FW FW B1 B1 SC B1 B2 B1 B1 B1 B2 B1 SC B1 B2
PoP 12hr 20 5 30 30 70 50 70 40 60
Rain shwrs S C C C L C C C L C S C L
Tstms S C C C L C S L C S L
$$
SCZ050-180800-
Charleston Waterfront-Charleston SC
32.78N 79.94W Elev. 10 ft
146 PM EDT Sun Aug 17 2025
Date 08/17/25 Mon 08/18/25 Tue 08/19/25 Wed
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 76 89 76
Temp 87 82 79 77 75 76 85 90 89 83 81 79 77 78 84 88 87 83 80 78 76 77
Dewpt 75 74 74 73 73 74 73 73 74 74 75 75 75 75 75 75 76 76 75 75 74 74
RH 68 77 85 87 94 94 67 58 61 74 82 88 94 91 74 66 70 80 85 91 94 90
Wind dir E SE SE NW N N NE SE SE S SE NE NE NE NE NE E NE NE N N N
Wind spd 8 4 2 1 2 2 3 5 6 5 2 2 4 5 10 11 12 9 6 5 8 10
Clouds SC FW CL FW FW FW FW FW CL CL FW FW FW FW FW B1 B1 FW FW FW FW FW
PoP 12hr 5 5 5 30 10
QPF 12hr 0 0 0 0 0
Snow 12hr 00-00 00-00 00-00
Rain shwrs S C C
Tstms S C C
Heat index 96 92 98 98 90 92 98 98 91
Max heat 99 98 101 98 99
Date 08/20 Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25
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 76 89 76 87 75 85 75 87
Temp 88 84 79 78 88 82 79 78 85 81 77 77 84 81 77 77 85 81
Dewpt 75 75 75 74 75 76 75 75 76 75 74 74 75 75 74 75 75 75
PWind dir N N NE S E SE SE S SW
Wind char GN LT LT LT LT LT LT LT LT
Avg clouds FW SC FW FW FW B1 B1 B1 B1 B2 B1 B1 B1 B2 B1 B1 B1 B2
PoP 12hr 20 10 30 40 60 50 60 40 60
Rain shwrs S C C C C L C C C L C C C L
Tstms S C C C C C C C C C C C C C
$$
SCZ048-180800-
Beaufort Marine Corps Air Station-Beaufort SC
32.48N 80.72W Elev. 37 ft
146 PM EDT Sun Aug 17 2025
Date 08/17/25 Mon 08/18/25 Tue 08/19/25 Wed
EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08
UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12
Min/Max 72 92 74 90 74
Temp 85 80 77 75 73 74 84 90 90 82 78 76 74 76 84 89 88 81 78 76 74 75
Dewpt 76 75 75 73 73 73 74 71 72 72 73 74 73 74 74 74 74 75 74 73 73 73
RH 75 85 94 94100 97 72 54 56 72 85 94 97 94 72 61 63 82 88 90 97 94
Wind dir E SE SE N N N NE E SE S SE E NE N NE NE E E NE N N N
Wind spd 5 2 1 1 1 2 2 4 5 4 2 1 2 4 6 6 8 5 3 3 5 8
Clouds B1 SC FW FW FW FW FW FW FW FW CL CL FW FW FW B1 B1 FW FW FW FW FW
PoP 12hr 5 5 0 30 10
QPF 12hr 0 0 0 0.04 0
Snow 12hr 00-00 00-00 00-00
Rain shwrs C C C
Tstms C C C
Heat index 94 91 96 97 91 98 97
Max heat 98 96 98 98 98
Date 08/20 Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25
EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
Max/Min 90 74 91 75 87 74 85 73 87
Temp 89 82 77 76 89 82 78 76 85 80 76 75 84 80 76 75 85 80
Dewpt 74 74 73 73 74 75 74 74 76 75 74 73 75 75 74 73 75 75
PWind dir N N NE S E E SE S SW
Wind char GN LT LT LT LT LT LT LT LT
Avg clouds FW SC FW FW FW B1 B1 SC B1 B2 B1 B1 B1 B2 B1 B1 B1 B2
PoP 12hr 20 5 30 30 60 50 70 40 60
Rain shwrs S C C S C L C C C L C C C L
Tstms S C C S C L C S S L C S S C
$$
SCZ043-180800-
Walterboro-Inland Colleton SC
32.91N 80.67W Elev. 98 ft
146 PM EDT Sun Aug 17 2025
Date 08/17/25 Mon 08/18/25 Tue 08/19/25 Wed
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 70 92 72 89 72
Temp 86 79 74 72 70 72 85 91 91 81 76 74 72 74 84 88 87 79 75 74 72 74
Dewpt 73 74 74 72 70 72 71 70 70 72 72 72 71 73 72 72 71 73 74 73 72 73
RH 65 85100100100100 63 50 50 74 87 93 97 97 67 59 59 82 97 97100 97
Wind dir E SE N N N N N E SE S SE N NE NE NE NE E E NE N N N
Wind spd 4 2 0 0 0 0 2 2 3 4 1 0 1 3 5 6 6 3 2 2 4 5
Clouds SC FW FW FW FW SC FW FW FW FW FW FW FW FW FW B1 B1 SC FW FW FW FW
PoP 12hr 5 5 0 30 5
QPF 12hr 0 0 0 0.04 0
Snow 12hr 00-00 00-00 00-00
Rain shwrs S C C
Tstms S C C
Heat index 93 90 97 97 90 95 93
Max heat 96 97 97 95 95
Date 08/20 Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25
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 72 90 72 85 71 84 71 85
Temp 87 81 74 74 88 80 74 74 83 78 73 73 82 77 72 73 83 78
Dewpt 72 72 72 73 71 74 74 74 73 74 73 73 73 73 72 73 73 73
PWind dir N N N E E E SE S SW
Wind char LT LT LT LT LT LT LT LT LT
Avg clouds SC FW FW FW FW B1 B1 SC B1 B2 B1 B1 B1 B2 B1 B1 B1 B1
PoP 12hr 10 5 30 30 60 40 60 30 50
Rain shwrs C C S C L C C C L C S S C
Tstms C C S C L C S C C S C
$$
GAZ099-180800-
Metter-Candler GA
32.40N 82.06W Elev. 197 ft
146 PM EDT Sun Aug 17 2025
Date 08/17/25 Mon 08/18/25 Tue 08/19/25 Wed
EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08
UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12
Min/Max 71 94 72 93 72
Temp 89 81 76 73 72 71 85 92 92 85 78 74 73 74 85 91 91 83 77 74 72 74
Dewpt 72 74 74 73 71 71 71 69 68 69 70 70 70 70 71 70 71 72 73 72 72 73
RH 57 79 94100 97100 63 47 46 59 76 87 90 87 63 50 52 70 87 93100 97
Wind dir NE SE SE N N N NE E SE SE SE N N NE NE NE NE NE E N N N
Wind spd 4 2 1 0 0 1 2 4 4 2 2 0 1 2 4 5 5 2 2 1 2 2
Clouds B1 SC FW CL FW SC FW FW FW FW CL CL CL FW FW FW FW FW FW CL CL FW
PoP 12hr 5 5 0 20 5
QPF 12hr 0 0 0 0 0
Snow 12hr 00-00 00-00 00-00
Rain shwrs C S S
Tstms C S S
Obvis PF PF
Heat index 96 90 97 96 90 97 98
Max heat 100 97 97 97 99
Date 08/20 Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25
EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
Max/Min 92 74 94 73 90 72 87 72 88
Temp 90 84 76 76 92 84 75 75 88 80 74 73 85 80 74 73 86 81
Dewpt 71 72 71 72 71 73 73 73 73 74 73 72 73 73 72 72 73 73
PWind dir N N N S E E SE S SW
Wind char LT LT LT LT LT LT LT LT LT
Avg clouds FW FW FW FW FW B1 B1 SC SC B2 B1 B1 B1 B2 B1 SC B1 B1
PoP 12hr 10 5 30 30 70 40 60 30 50
Rain shwrs C C S L C S C L C S C
Tstms C C S L C L S S C
$$
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