584
FOUS52 KCHS 181826
PFMCHS
POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE CHARLESTON SC
226 PM EDT TUE AUG 18 2026
SCZ150-190800-
CHARLESTON INTERNATIONAL AIRPORT-CHARLESTON SC
32.91N 80.03W ELEV. 45 FT
226 PM EDT TUE AUG 18 2026
DATE 08/18/26 WED 08/19/26 THU 08/20/26 FRI
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 78 98 78 97 78
TEMP 98 88 84 81 79 80 91 96 96 89 82 81 79 80 91 95 93 85 81 80 79 80
DEWPT 74 76 76 75 74 75 74 73 74 75 76 77 77 77 75 74 75 75 77 77 77 77
RH 47 68 77 82 85 85 58 48 49 64 82 88 94 91 60 51 56 72 88 91 94 91
WIND DIR W SW SW W W W W S S S S SE SE N S S S S S S S SW
WIND SPD 9 9 6 4 3 3 4 5 9 8 4 2 1 0 4 9 11 9 6 5 5 4
CLOUDS FW SC FW FW FW FW FW FW FW B1 FW CL FW FW FW SC SC SC SC FW FW FW
POP 12HR 10 10 5 10 5
QPF 12HR 0 0 0 0 0
SNOW 12HR 00-00 00-00 00-00
HEAT INDEX 110 99 93 101106107 99 102106105 94
MAX HEAT 111 96 106 107 94 106 106 91
EXTREME HEAT W
HEAT Y Y Y
DATE 08/21 SAT 08/22/26 SUN 08/23/26 MON 08/24/26 TUE 08/25/26
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 95 76 93 75 94 76 94 75 95
TEMP 93 88 80 78 91 83 77 77 91 85 78 77 92 84 78 78 92 84
DEWPT 75 76 76 76 75 75 75 75 72 73 75 73 69 71 74 74 70 72
PWIND DIR S S SW SW SW SW S S SW
WIND CHAR GN LT LT LT LT LT LT LT LT
AVG CLOUDS FW SC SC SC SC B1 B1 SC SC SC SC FW FW FW SC FW FW SC
POP 12HR 30 40 60 50 20 10 20 20 20
RAIN SHWRS C C S S L C S S S S S
TSTMS C C S S L C S S S S
GAZ218-190800-
SAVANNAH INTERNATIONAL AIRPORT-INLAND CHATHAM GA
32.12N 81.20W ELEV. 50 FT
226 PM EDT TUE AUG 18 2026
DATE 08/18/26 WED 08/19/26 THU 08/20/26 FRI
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 78 99 77 99 77
TEMP 98 91 85 82 79 79 91 98 99 92 84 80 78 78 91 98 95 88 83 80 78 78
DEWPT 72 73 73 73 71 72 71 69 68 72 73 73 73 73 75 73 73 75 76 76 75 75
RH 43 56 67 74 77 79 52 39 37 52 70 79 85 85 60 45 49 66 80 88 91 91
WIND DIR W SW SW W W W W W W S S SW SW W SW SE SE S S S S SW
WIND SPD 6 5 4 4 4 4 5 5 5 5 3 2 2 2 2 4 9 6 3 3 3 2
CLOUDS FW SC FW FW CL CL FW CL FW FW SC CL CL FW FW FW FW SC FW FW FW FW
POP 12HR 5 5 5 10 5
QPF 12HR 0 0 0 0 0
SNOW 12HR 00-00 00-00 00-00
HEAT INDEX 107100 92 98104105100 90 102109105 98 91
MAX HEAT 110 96 104 105 94 109 109 95
EXTREME HEAT W
HEAT Y Y Y
DATE 08/21 SAT 08/22/26 SUN 08/23/26 MON 08/24/26 TUE 08/25/26
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 96 75 94 75 95 75 96 75 96
TEMP 95 89 79 77 92 84 77 76 93 87 78 76 94 87 78 76 94 87
DEWPT 75 76 75 75 75 75 74 74 72 73 73 72 70 72 73 72 70 73
PWIND DIR S S SW SW SW SW SW S SW
WIND CHAR LT LT LT LT LT LT LT LT LT
AVG CLOUDS FW B1 B1 SC SC SC B2 SC FW SC SC FW FW FW SC FW FW SC
POP 12HR 30 30 60 30 20 10 10 10 20
RAIN SHWRS C C S L C S S
TSTMS C C S L C S S
SCZ150-190800-
CHARLESTON WATERFRONT-CHARLESTON SC
32.78N 79.94W ELEV. 10 FT
226 PM EDT TUE AUG 18 2026
DATE 08/18/26 WED 08/19/26 THU 08/20/26 FRI
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 80 97 80 95 80
TEMP 95 88 85 83 81 81 91 95 95 88 84 82 81 82 91 93 91 85 83 82 81 82
DEWPT 78 79 79 78 76 76 76 77 78 78 79 79 78 79 79 79 79 79 79 79 78 79
RH 58 75 82 85 85 85 62 56 58 72 85 91 91 91 68 64 68 82 88 91 91 91
WIND DIR SW SW SW W W W S S S S S S S S S S S S S S SW SW
WIND SPD 10 9 6 3 3 2 3 6 9 5 3 2 2 2 4 9 10 8 5 4 4 3
CLOUDS SC FW SC FW FW FW FW FW FW SC FW CL FW FW FW FW FW SC SC FW FW FW
POP 12HR 10 10 5 5 5
QPF 12HR 0 0 0 0 0
SNOW 12HR 00-00 00-00 00-00
HEAT INDEX 112103 98 93 103109110102 96 92 92107110108 98 94 92 92
MAX HEAT 113 100 90 109 110 97 92 110 110 96 92
EXTREME HEAT W
HEAT Y Y Y
DATE 08/21 SAT 08/22/26 SUN 08/23/26 MON 08/24/26 TUE 08/25/26
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 79 92 77 92 78 92 78 92
TEMP 91 87 82 80 89 84 80 79 90 85 81 79 90 85 80 80 90 85
DEWPT 80 78 78 78 79 78 77 76 77 77 77 75 74 75 76 76 75 76
PWIND DIR S S SW SW SW SW S SW SW
WIND CHAR GN LT GN LT GN LT LT LT GN
AVG CLOUDS FW SC SC SC SC SC B1 B1 SC SC SC FW FW FW SC FW SC SC
POP 12HR 20 40 60 50 20 20 20 20 20
RAIN SHWRS S C C S L C S S S S S S S
TSTMS S C C S C C S S S S S S
SCZ148-190800-
BEAUFORT MARINE CORPS AIR STATION-BEAUFORT SC
32.48N 80.72W ELEV. 37 FT
226 PM EDT TUE AUG 18 2026
DATE 08/18/26 WED 08/19/26 THU 08/20/26 FRI
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 78 99 78 97 78
TEMP 98 90 85 83 80 80 91 97 98 90 83 81 79 80 91 96 94 86 82 81 79 80
DEWPT 75 76 75 74 72 72 73 72 72 75 75 76 75 76 76 76 76 76 77 77 76 76
RH 48 64 72 74 77 77 56 45 43 62 77 85 88 88 62 53 56 72 85 88 91 88
WIND DIR W SW SW W W W W W SW S S S S SW S SE SE S S S S SW
WIND SPD 5 5 4 3 4 3 4 4 5 6 3 2 2 1 3 5 9 6 4 3 3 2
CLOUDS SC FW FW FW FW FW FW CL FW FW FW FW CL FW FW FW FW SC FW FW FW FW
POP 12HR 5 5 5 5 0
QPF 12HR 0 0 0 0 0
SNOW 12HR 00-00 00-00 00-00
HEAT INDEX 111102 94 90 100106107101 90 103110107 96 90
MAX HEAT 112 98 106 109 95 110 110 93
EXTREME HEAT W
HEAT Y Y Y
DATE 08/21 SAT 08/22/26 SUN 08/23/26 MON 08/24/26 TUE 08/25/26
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 95 77 93 76 94 75 95 77 95
TEMP 93 88 80 78 91 84 78 77 92 86 79 76 93 86 79 78 93 86
DEWPT 77 77 76 76 77 77 75 74 74 75 74 72 72 74 74 73 72 74
PWIND DIR S S SW SW SW SW SW S SW
WIND CHAR LT LT LT LT LT LT LT LT LT
AVG CLOUDS FW SC B1 SC SC SC B1 SC SC SC SC SC FW FW SC FW FW SC
POP 12HR 20 30 50 40 20 10 10 20 20
RAIN SHWRS S C S C C S S S
TSTMS S C S C C S S S
SCZ043-190800-
WALTERBORO-INLAND COLLETON SC
32.91N 80.67W ELEV. 98 FT
226 PM EDT TUE AUG 18 2026
DATE 08/18/26 WED 08/19/26 THU 08/20/26 FRI
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 97 74 97 74
TEMP 97 90 82 79 77 77 90 96 97 89 80 77 76 76 91 96 93 85 79 77 76 76
DEWPT 71 72 73 72 70 70 72 70 69 72 73 73 73 74 73 70 72 73 74 75 74 74
RH 43 56 74 79 79 79 56 43 40 57 79 87 90 94 56 43 51 67 85 94 94 94
WIND DIR W W N N W W W W W SE N N N N S S S S SE N N N
WIND SPD 8 3 0 0 3 3 3 4 5 4 0 0 0 0 1 5 8 6 3 0 0 0
CLOUDS FW SC FW CL FW FW FW FW FW SC FW FW FW CL FW FW SC SC FW FW FW FW
POP 12HR 5 10 5 10 5
QPF 12HR 0 0 0 0 0
SNOW 12HR 00-00 00-00 00-00
HEAT INDEX 105 97 97103103 96 100103101 92
MAX HEAT 106 92 103 103 104 103
HEAT Y
DATE 08/21 SAT 08/22/26 SUN 08/23/26 MON 08/24/26 TUE 08/25/26
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 95 73 92 72 93 72 94 72 94
TEMP 94 87 76 75 90 82 75 74 92 85 74 74 91 85 75 75 92 85
DEWPT 72 74 74 74 73 74 73 72 69 70 71 70 66 68 71 71 67 70
PWIND DIR S S SW SW SW S SW S SW
WIND CHAR LT LT LT LT LT LT LT LT LT
AVG CLOUDS FW SC B1 SC SC SC B1 SC SC SC SC FW FW FW SC FW SC SC
POP 12HR 30 50 60 30 10 10 20 10 20
RAIN SHWRS C C S L C S S
TSTMS C C S L C S S
GAZ099-190800-
METTER-CANDLER GA
32.40N 82.06W ELEV. 197 FT
226 PM EDT TUE AUG 18 2026
DATE 08/18/26 WED 08/19/26 THU 08/20/26 FRI
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 76 98 74 99 74
TEMP 98 91 83 80 77 77 89 96 98 91 81 78 76 76 90 97 96 87 80 78 76 76
DEWPT 72 73 72 71 70 70 71 68 66 68 69 69 70 71 72 69 68 72 74 74 73 74
RH 43 56 70 74 79 79 56 40 35 47 67 74 82 85 56 40 40 61 82 88 90 94
WIND DIR W W W W W W W NW NW NW NW SW W NW NW W S SE S S S S
WIND SPD 8 4 3 3 3 4 6 8 6 3 2 2 2 2 3 4 4 4 3 3 3 2
CLOUDS FW FW FW FW FW FW FW CL FW CL FW FW CL CL CL FW SC SC FW FW FW FW
POP 12HR 5 5 5 30 10
QPF 12HR 0 0 0 0.01 0
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS C C
TSTMS C C
HEAT INDEX 107100 95101102 95 97103101 94
MAX HEAT 107 94 101 102 103 104 90
HEAT Y
DATE 08/21 SAT 08/22/26 SUN 08/23/26 MON 08/24/26 TUE 08/25/26
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 95 73 93 73 94 72 95 73 96
TEMP 94 87 77 74 90 84 76 74 92 86 76 73 93 87 75 75 94 87
DEWPT 73 75 75 74 75 74 73 73 70 69 69 68 67 67 69 69 68 68
PWIND DIR S S SW SW W SW W S SW
WIND CHAR LT LT LT LT LT LT LT LT LT
AVG CLOUDS FW SC B1 SC SC SC B1 SC SC FW SC FW FW FW SC FW SC SC
POP 12HR 60 40 40 30 10 10 10 5 20
RAIN SHWRS L C S C C S
TSTMS L C S C 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
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