Point Forecast Matrices
Issued by NWS Charleston, SC
Issued by NWS Charleston, SC
311
FOUS52 KCHS 221116
PFMCHS
Point Forecast Matrices
National Weather Service Charleston SC
716 AM EDT Fri Aug 22 2025
SCZ050-222000-
Charleston International Airport-Charleston SC
32.91N 80.03W Elev. 45 ft
716 AM EDT Fri Aug 22 2025
Date Fri 08/22/25 Sat 08/23/25 Sun 08/24/25
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 85 74 82 72 86
Temp 76 81 81 80 78 76 76 75 75 78 80 79 76 74 73 73 74 80 83 83 78
Dewpt 73 74 73 74 74 73 73 73 73 73 73 73 73 72 73 72 72 73 72 73 73
RH 90 79 77 82 88 90 90 94 94 85 79 82 90 93100 97 93 79 70 72 85
Wind dir NE E E E E E NE NE NE E E E E E NE N N N N W W
Wind spd 4 8 9 9 6 5 5 5 8 10 10 10 6 4 3 4 5 5 5 5 4
Clouds B1 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 B2 B2 B1
PoP 12hr 80 60 80 50 70
QPF 12hr 0.82 1.29 0.70 0.14 0.38
Snow 12hr 00-00 00-00 00-00
Rain shwrs S C D L C C C C L L D D C C C C C C L L S
Tstms S C D L C C C C C C L L C C C S S C L C S
Coast Flood Y
Flood A A A A A A A A A A A A A A
Date Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 Thu 08/28/25
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 89 70 84 68 85
Temp 74 74 87 80 75 73 87 79 73 70 82 76 70 70 82 76
Dewpt 72 72 71 73 72 69 66 68 68 65 64 66 65 64 62 65
PWind dir W W W NE N NE NE NE
Wind char LT LT LT LT LT LT LT GN
Avg clouds SC SC SC B1 FW FW FW SC SC SC B1 B1 SC SC SC B1
PoP 12hr 20 40 5 20 5 30 20 30
Rain shwrs S C S C S S C
Tstms S C S C S S C
$$
GAZ118-222000-
Savannah International Airport-Inland Chatham GA
32.12N 81.20W Elev. 50 ft
716 AM EDT Fri Aug 22 2025
Date Fri 08/22/25 Sat 08/23/25 Sun 08/24/25
EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20
UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
Max/Min 86 73 83 72 87
Temp 75 83 84 82 77 75 75 74 74 79 81 81 77 74 73 73 73 80 85 84 79
Dewpt 74 77 77 77 74 74 74 73 74 76 76 76 74 73 73 72 73 75 75 75 73
RH 97 82 80 85 90 97 97 97100 91 85 85 90 97100 97100 85 72 74 82
Wind dir NE E E E E E E NE NE NE E E NE E N N N NW NW W W
Wind spd 2 4 5 6 4 2 2 3 4 5 6 6 4 2 2 2 3 4 4 5 2
Clouds B1 B1 B2 B2 OV B2 B2 B1 B2 B2 OV OV OV B2 B2 B1 B2 B1 B2 B2 B1
PoP 12hr 90 70 90 50 70
QPF 12hr 1.36 0.44 0.87 0.11 0.19
Snow 12hr 00-00 00-00 00-00
Rain shwrs C D L L C C C L L D D C C S S C C L L S
Tstms C D L C S C C S C L L C S S S S L C S
Heat index 92 94 90 94 92
Max heat 94 93 94 94
Flood A A A A A A A A A A A A A A
Date Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 Thu 08/28/25
EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
Min/Max 72 91 71 91 70 85 69 85
Temp 74 73 89 81 75 72 89 80 74 71 83 77 71 69 83 76
Dewpt 72 73 74 74 72 70 70 70 68 67 68 68 66 65 67 66
PWind dir W W W N N NE NE NE
Wind char LT LT LT LT LT LT LT LT
Avg clouds SC SC SC B1 SC FW FW SC SC SC B1 B1 SC FW SC B1
PoP 12hr 20 30 5 20 5 30 20 30
Rain shwrs S C S C S C
Tstms S C S C S C
$$
SCZ050-222000-
Charleston Waterfront-Charleston SC
32.78N 79.94W Elev. 10 ft
716 AM EDT Fri Aug 22 2025
Date Fri 08/22/25 Sat 08/23/25 Sun 08/24/25
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 84 75 81 73 85
Temp 78 82 82 82 80 78 78 77 77 79 80 80 78 76 76 75 75 80 83 83 80
Dewpt 76 76 77 77 76 75 75 74 75 76 76 76 75 75 75 74 74 75 76 77 76
RH 94 82 85 85 88 91 91 90 94 91 88 88 91 97 97 97 97 85 80 82 88
Wind dir NE E E E E E E E E E E E E E NE NE N N NE SW W
Wind spd 4 6 10 10 6 5 5 5 8 10 11 10 6 5 3 3 4 5 6 5 4
Clouds B2 B2 B2 B2 B2 B2 B1 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B1
PoP 12hr 80 60 80 60 70
QPF 12hr 0.59 1.82 0.88 0.21 0.36
Snow 12hr 00-00 00-00 00-00
Rain shwrs C C D L C C C L D D D D L L C C C C L L S
Tstms C C D L C C C C C C L L C C C C S C L C S
Heat index 90 90 91 92
Max heat 92 92 91 92
Coast Flood Y
Flood A A A A A A A A A A A A A A
Date Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 Thu 08/28/25
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 88 74 88 73 84 70 83
Temp 75 75 86 82 77 76 86 80 75 73 83 78 73 72 82 77
Dewpt 74 74 76 75 74 72 72 72 70 67 68 68 66 66 67 67
PWind dir W W W E NE NE NE NE
Wind char LT LT LT LT LT LT LT GN
Avg clouds SC SC SC B1 FW FW FW SC SC SC B1 B1 SC SC SC B1
PoP 12hr 20 30 10 20 10 30 20 30
Rain shwrs S S C S S C S S S C
Tstms S S C S S C S S S C
$$
SCZ048-222000-
Beaufort Marine Corps Air Station-Beaufort SC
32.48N 80.72W Elev. 37 ft
716 AM EDT Fri Aug 22 2025
Date Fri 08/22/25 Sat 08/23/25 Sun 08/24/25
EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20
UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
Max/Min 85 73 82 72 86
Temp 76 82 83 80 77 76 76 75 73 78 80 80 77 75 74 73 73 79 84 83 78
Dewpt 74 76 77 76 76 75 74 73 73 75 76 75 74 74 73 72 73 75 75 75 75
RH 94 82 82 88 97 97 94 94100 91 88 85 90 97 97 97100 88 74 77 91
Wind dir NE E E E E E NE NE NE E E E E E NE N N N NW W W
Wind spd 2 4 5 6 5 3 3 4 5 8 8 8 5 3 2 3 3 4 4 4 2
Clouds B1 B1 B2 B2 OV B2 B1 B2 B2 B2 OV OV B2 B2 B1 B2 B2 B1 B2 B2 B1
PoP 12hr 90 60 90 50 60
QPF 12hr 0.26 0.52 0.94 0.15 0.18
Snow 12hr 00-00 00-00 00-00
Rain shwrs C D L L C C C L L D D C C C C C C L L S
Tstms C D L C C C C C C L L C C S S S L C S
Heat index 92 92 90
Max heat 92 91 92 92
Flood A A A A A A A A A A A A A A
Date Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 Thu 08/28/25
EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
Min/Max 72 89 72 89 70 84 68 84
Temp 75 74 87 80 75 73 88 80 74 71 83 76 72 69 82 76
Dewpt 73 73 74 75 73 70 71 71 68 67 68 67 66 64 66 66
PWind dir W W W NE NE NE NE NE
Wind char LT LT LT LT LT LT LT LT
Avg clouds SC SC SC B1 FW FW FW FW SC SC B1 B1 SC SC SC B1
PoP 12hr 20 30 5 10 5 30 20 30
Rain shwrs S C C S C
Tstms S C C S C
$$
SCZ043-222000-
Walterboro-Inland Colleton SC
32.91N 80.67W Elev. 98 ft
716 AM EDT Fri Aug 22 2025
Date Fri 08/22/25 Sat 08/23/25 Sun 08/24/25
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 83 71 80 70 83
Temp 73 80 81 78 74 73 73 72 72 77 78 78 74 72 71 71 72 78 81 82 76
Dewpt 73 74 74 74 74 73 72 72 72 73 73 73 73 72 71 70 72 73 73 73 74
RH 100 82 79 88100100 97100100 87 85 85 97100100 97100 85 77 74 94
Wind dir E E E E E E NE NE E E E E E NE NE NE N N N W SW
Wind spd 2 5 5 5 3 2 2 4 5 8 8 6 4 2 2 2 3 4 4 4 2
Clouds B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 OV B2 B2 B2 B2 B1 B2 B2 B1
PoP 12hr 80 50 80 40 60
QPF 12hr 0.35 0.10 0.33 0.05 0.17
Snow 12hr 00-00 00-00 00-00
Rain shwrs S C L D C C C C C C D D C C S S S S L L
Tstms S C L L C C C S S C L L C S S S C C
Flood A A A A A A A A A A A A A A
Date Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 Thu 08/28/25
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 69 88 68 87 67 82 65 82
Temp 72 71 86 78 72 70 85 76 70 68 80 73 67 67 80 73
Dewpt 72 71 71 73 71 67 66 68 67 65 63 65 64 64 62 65
PWind dir W W W N N NE NE NE
Wind char LT LT LT LT LT LT LT LT
Avg clouds SC SC SC B1 FW FW FW FW SC SC B1 SC SC SC FW SC
PoP 12hr 10 30 5 10 5 20 10 30
Rain shwrs C S C
Tstms C S C
$$
GAZ099-222000-
Metter-Candler GA
32.40N 82.06W Elev. 197 ft
716 AM EDT Fri Aug 22 2025
Date Fri 08/22/25 Sat 08/23/25 Sun 08/24/25
EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20
UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
Max/Min 87 71 83 70 87
Temp 74 81 85 82 75 74 73 73 72 78 81 81 76 73 72 71 72 78 85 85 78
Dewpt 73 75 75 74 73 73 73 73 72 74 74 74 73 72 72 71 71 73 73 72 73
RH 97 82 72 77 94 97100100100 88 79 79 90 97100100 97 85 67 65 85
Wind dir E E SE E E E E E NE E E E E NE NE NE N N NW W SW
Wind spd 2 3 4 5 3 2 2 2 3 5 5 5 2 2 1 2 2 3 4 3 2
Clouds B1 B1 B2 OV B2 B2 B2 B2 B1 B2 OV OV B2 B2 B1 B2 B2 B1 B1 B1 SC
PoP 12hr 90 60 90 30 50
QPF 12hr 0.73 0.15 0.36 0.02 0.09
Snow 12hr 00-00 00-00 00-00
Rain shwrs C C D L C S C C C D D C C S S C C
Tstms C C D C S S S C L L C S C C
Heat index 94 92 91
Max heat 94 94 92 93
Flood A A A A A A A A A A A A A A
Date Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 Thu 08/28/25
EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
Min/Max 70 91 67 90 68 85 65 86
Temp 72 72 88 80 72 69 88 79 71 68 83 76 68 66 84 75
Dewpt 72 72 72 71 68 64 66 66 64 63 65 64 63 62 63 64
PWind dir W NW NW N N NE NE E
Wind char LT LT LT LT LT LT LT LT
Avg clouds SC SC SC SC FW FW FW FW FW SC SC SC FW FW FW SC
PoP 12hr 10 20 0 5 5 20 10 20
Rain shwrs S S S
Tstms S S S
$$
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