Point Forecast Matrices
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
Versions:
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867 FOCA52 TJSJ 172130 PFMSJU Point Forecast Matrices National Weather Service San Juan PR 530 PM AST Sun Aug 17 2025 PRZ001-180815- Luis Munoz Marin International Airport-San Juan 18.43N 66.00W Elev. 9 ft 530 PM AST Sun Aug 17 2025 Date 08/17/25 Mon 08/18/25 Tue 08/19/25 Wed AST 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 79 90 79 91 79 Temp 82 81 80 80 86 89 90 87 83 81 80 80 86 90 91 87 83 81 80 80 88 Dewpt 74 75 74 74 75 74 73 74 74 75 75 75 75 74 75 75 75 73 74 74 75 RH 77 82 82 82 70 61 58 65 74 82 85 85 70 60 60 68 77 77 82 82 66 Wind dir S S S S S S S S S S SE S SE SE SE SE SE SE SE SE SE Wind spd 13 14 14 12 13 16 16 11 9 6 5 5 8 10 14 10 8 5 4 3 9 Clouds SC SC B2 B2 B2 B2 B2 B2 B1 SC SC SC SC SC B1 B1 SC SC SC SC SC PoP 12hr 50 60 40 40 30 QPF 12hr 0.30 0.53 0.10 0.09 0.11 Rain shwrs C C C C C L L C C C S C C C C C C C C C C Tstms S S S S S S Heat index 88 87 84 84 95 98 98 95 90 87 85 85 95 99102 96 90 86 84 84 98 Max heat 92 87 95 99 97 88 95 102 101 88 98 Flood A A A A A A A A High Surf Y Y Y Y Date 08/20 Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 AST 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 91 79 90 78 90 79 90 Temp 93 84 80 86 91 83 80 86 90 82 79 85 90 83 80 86 90 82 Dewpt 77 77 75 75 76 76 75 76 77 76 76 76 77 76 76 77 77 76 PWind dir E E E E NE E E SE E Wind char GN GN GN GN GN BZ BZ GN BZ Avg clouds SC SC SC SC SC B1 B1 B1 B1 B1 B2 B1 B1 B2 B1 B1 B1 B2 PoP 12hr 30 20 50 40 50 50 60 40 60 Rain shwrs C C S S C C C C C C C C L L C C L L Tstms S S S S S S S S S $$ PRZ002-180815- Roosevelt Roads Naval Airstation-Ceiba PR 18.25N 65.63W Elev. 39 ft 530 PM AST Sun Aug 17 2025 Date 08/17/25 Mon 08/18/25 Tue 08/19/25 Wed AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 80 90 80 91 81 Temp 83 82 80 81 86 89 90 87 83 82 81 81 87 90 91 88 84 83 82 82 87 Dewpt 75 76 75 75 76 76 75 75 75 75 75 75 76 75 75 75 74 75 75 75 76 RH 77 82 85 82 72 66 62 68 77 79 82 82 70 62 60 66 72 77 79 79 70 Wind dir S S S S S S S S S S S S SE SE SE SE SE E E E E Wind spd 17 18 18 16 17 18 17 12 11 11 10 10 10 11 11 9 8 8 8 8 12 Clouds SC B1 B2 OV B2 B2 B2 OV B1 B1 B2 B1 B1 B1 B1 B1 B1 B1 B1 B1 B2 PoP 12hr 70 70 50 40 50 QPF 12hr 0.37 0.61 0.25 0.16 0.27 Rain shwrs C C L L L L C L C C C C C C C C C C C C C Tstms S S S S S S S S Heat index 90 89 85 87 96100101 96 90 89 87 87 98101102 98 91 90 89 89 98 Max heat 95 89 96 101 101 90 98 102 102 91 98 Flood A A A A A A A A High Surf Y Y Y Y Date 08/20 Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 91 81 90 80 90 79 89 80 89 Temp 91 84 82 87 90 83 81 86 90 83 80 85 89 83 81 86 89 83 Dewpt 78 77 76 76 76 76 77 77 78 77 77 77 77 77 77 77 77 77 PWind dir E E E NE NE NE SE SE E Wind char GN GN GN GN BZ BZ BZ GN BZ Avg clouds B1 SC SC SC B1 B1 B1 B1 SC SC B2 B2 B2 B2 B2 B2 B2 B2 PoP 12hr 50 30 50 40 60 60 60 60 60 Rain shwrs C C S C C C C C C L L L L L L L L L Tstms S S S S S S S S S S S S $$ PRZ007-180815- Mercedita Airport-Ponce PR 18.02N 66.56W Elev. 26 ft 530 PM AST Sun Aug 17 2025 Date 08/17/25 Mon 08/18/25 Tue 08/19/25 Wed AST 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 86 78 88 77 Temp 80 79 78 79 83 86 86 84 81 80 78 79 84 87 88 85 81 79 78 78 84 Dewpt 75 75 74 74 75 75 75 75 74 74 74 74 75 74 74 74 75 73 72 73 75 RH 85 88 88 85 77 70 70 74 79 82 88 85 74 65 63 70 82 82 82 85 74 Wind dir S S S S S S S S E E E E SE SE SE SE E E E E E Wind spd 13 12 12 11 13 14 13 8 6 8 8 9 10 11 11 5 6 5 6 4 8 Wind gust 24 25 Clouds B2 B2 B2 B2 B2 B2 OV OV B2 B1 SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 60 80 60 30 30 QPF 12hr 0.46 0.97 0.26 0.12 0.14 Rain shwrs L L C C L L L D L C C S S S C C C C C C S Tstms S S S S S S S S S Heat index 85 90 95 95 92 86 84 92 95 97 93 87 92 Max heat 88 85 90 95 95 84 92 97 95 85 92 Flood A A A A A A A A Date 08/20 Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 AST 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 91 76 90 77 87 77 88 Temp 89 80 77 85 91 81 77 85 90 81 78 83 87 80 78 84 88 81 Dewpt 74 74 72 70 70 74 73 73 75 73 72 72 72 73 73 73 74 73 PWind dir E E E NE E NE E E E Wind char GN LT GN LT GN GN BZ GN GN Avg clouds SC SC FW FW SC SC SC SC SC SC SC B1 B2 B1 SC SC B1 B2 PoP 12hr 20 5 30 20 30 50 50 30 60 Rain shwrs S S C C S S S C C C C C S C L L Tstms S S S S $$ PRZ008-180815- Rafael Hernandez Airport-Aguadilla PR 18.50N 67.13W Elev. 237 ft 530 PM AST Sun Aug 17 2025 Date 08/17/25 Mon 08/18/25 Tue 08/19/25 Wed AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 78 88 77 89 77 Temp 81 80 78 79 84 87 88 85 81 79 78 78 84 88 89 85 81 79 78 78 84 Dewpt 75 76 75 75 75 75 75 75 75 75 74 74 74 74 74 75 75 75 73 72 72 RH 82 88 91 88 74 68 66 72 82 88 88 88 72 63 61 72 82 88 85 82 67 Wind dir S S S S S S S S S S S SE S S S SE E SE SE E E Wind spd 21 23 21 19 18 20 21 18 13 11 9 6 6 8 6 3 2 4 6 5 4 Clouds B1 B1 SC SC SC B1 B2 B2 B2 SC SC SC CL CL OV OV CL CL CL CL CL PoP 12hr 40 60 60 70 0 QPF 12hr 0.15 0.47 0.18 1.05 0.05 Rain shwrs C C S S S C L L L S S S L L Tstms S S S S S Heat index 87 86 92 96 98 94 87 91 97 98 94 87 90 Max heat 92 86 92 98 96 85 91 98 97 85 90 Flood A A A A A A A A High Surf Y Y Y Y Date 08/20 Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 88 77 89 78 88 77 86 77 88 Temp 88 81 78 84 89 82 79 84 88 81 78 83 86 80 78 84 88 81 Dewpt 77 77 75 75 76 75 76 76 77 76 76 76 77 76 76 76 77 75 PWind dir NE E NE E NE NE E E E Wind char LT LT BZ BZ BZ BZ BZ GN GN Avg clouds SC B1 FW FW SC B1 SC FW SC SC FW SC SC B1 SC SC SC B2 PoP 12hr 50 5 50 5 30 10 60 20 60 Rain shwrs C C C C S S C C S S L L S S L L Tstms S S S S S S S S $$ PRZ010-180815- Eugenio Maria de Hosto Airport-Mayaguez PR 18.27N 67.15W Elev. 28 ft 530 PM AST Sun Aug 17 2025 Date 08/17/25 Mon 08/18/25 Tue 08/19/25 Wed AST 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 90 77 91 75 Temp 81 79 78 78 85 89 90 86 81 79 78 79 86 90 91 86 80 78 76 77 87 Dewpt 75 76 75 75 75 75 75 75 75 75 75 75 75 74 74 74 75 73 73 71 72 RH 82 91 91 91 72 64 62 70 82 88 91 88 70 60 58 68 85 85 90 82 61 Wind dir S S S S S S S S S S S SE SE S S S SE SE E E E Wind spd 18 19 19 18 18 19 20 16 12 11 11 8 11 13 14 12 8 8 8 4 5 Clouds B2 B2 SC SC SC B2 OV OV B2 B1 SC SC CL CL B2 B2 CL CL CL CL FW PoP 12hr 50 80 60 50 0 QPF 12hr 0.26 0.85 0.28 0.53 0.05 Rain shwrs C C C C C C D D L C C S C C Tstms S S S S S S S S Heat index 87 94 99101 95 87 95 99101 94 85 94 Max heat 93 85 94 101 99 87 95 101 99 94 Flood A A A A A A A A High Surf Y Y Y Y Date 08/20 Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 AST 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 94 74 94 75 93 75 91 75 92 Temp 94 81 75 86 94 81 76 86 93 81 76 85 91 80 76 86 92 81 Dewpt 78 78 75 75 77 77 75 77 79 77 76 77 78 76 75 77 79 77 PWind dir E E NE NE NE NE E E E Wind char LT LT GN GN GN GN BZ GN GN Avg clouds SC B1 FW FW SC B1 SC FW SC B1 SC SC B1 B1 SC SC SC B2 PoP 12hr 50 5 50 5 50 20 60 20 60 Rain shwrs C C C C S S C C S S L L S S L L Tstms S S S S S S S S S S $$ VIZ001-180815- CYRIL E. King Airport-St Thomas USVI 18.33N 64.97W Elev. 23 ft 530 PM AST Sun Aug 17 2025 Date 08/17/25 Mon 08/18/25 Tue 08/19/25 Wed AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 82 90 82 92 82 Temp 84 83 82 83 87 90 90 88 85 84 82 83 88 91 92 89 85 84 83 83 89 Dewpt 76 75 75 76 76 75 75 76 76 76 75 75 75 76 74 75 74 76 76 76 75 RH 77 77 79 80 70 62 62 68 75 77 79 77 66 62 56 64 70 77 80 80 64 Wind dir S S S S S S S S S S SE SE SE SE SE SE SE E E E E Wind spd 21 23 21 20 20 19 19 14 14 14 13 13 11 13 13 13 10 13 14 16 17 Clouds SC B1 B2 B2 B2 B1 SC B1 SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 60 50 30 30 30 QPF 12hr 0.43 0.33 0.16 0.10 0.11 Rain shwrs C C C L C C C C S S C S S S C C C C C C C Tstms S S S Heat index 93 90 89 91 98101101 99 94 93 89 90 98103102 99 93 93 91 91 99 Max heat 98 93 98 101 101 93 98 103 102 94 99 Flood A A A A A A A A High Surf Y Y Y Y Date 08/20 Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 93 81 92 81 92 80 92 82 92 Temp 93 85 82 88 92 85 82 88 92 84 81 87 92 85 83 88 92 85 Dewpt 77 76 76 77 76 76 77 78 77 77 77 78 77 77 78 78 77 77 PWind dir E E E NE NE E SE SE E Wind char BZ BZ BZ BZ WY WY WY BZ BZ Avg clouds SC SC SC SC SC B1 B1 B1 SC SC B2 B2 B2 B2 B2 B2 B2 B2 PoP 12hr 30 30 40 40 50 60 60 60 60 Rain shwrs C S S C C C C C C C C L L L L L L L Tstms S S S S S S S S S $$ VIZ002-180815- Henry E. Rohlsen Airport-St Croix USVI 17.70N 64.80W Elev. 74 ft 530 PM AST Sun Aug 17 2025 Date 08/17/25 Mon 08/18/25 Tue 08/19/25 Wed AST 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 79 90 79 90 79 Temp 82 81 80 80 86 89 90 87 83 81 80 80 86 89 90 87 83 81 80 80 86 Dewpt 75 75 75 76 76 76 76 76 75 75 75 75 75 75 72 75 74 75 76 75 76 RH 79 82 85 88 72 66 64 70 77 82 85 85 70 64 56 68 74 82 88 85 72 Wind dir S S S S SE S S S SE SE SE SE SE SE SE SE E E E E E Wind spd 18 18 18 18 19 20 17 14 11 12 12 10 9 13 13 12 9 12 12 14 16 Clouds SC B1 B1 B1 B1 B1 B1 SC SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 40 40 30 30 30 QPF 12hr 0.34 0.36 0.17 0.11 0.11 Rain shwrs C C C C C C C C C S S S S S C C C C C C C Tstms Heat index 89 87 85 86 96100102 98 90 87 85 85 95 99 97 96 90 87 86 85 96 Max heat 95 89 96 102 100 89 95 99 97 88 96 Flood A A A A A A A A High Surf Y Y Y Y Date 08/20 Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 AST 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 78 90 78 90 78 89 78 90 Temp 90 82 79 85 90 82 79 85 90 82 79 85 89 82 79 85 90 82 Dewpt 77 76 75 76 76 75 76 77 77 76 76 77 77 77 77 77 77 77 PWind dir E E E NE NE E SE SE E Wind char BZ GN BZ BZ BZ BZ BZ BZ BZ Avg clouds SC SC SC SC SC SC B1 B1 SC B1 B2 B2 B2 B2 B2 B2 B2 B2 PoP 12hr 30 20 40 40 60 60 60 60 60 Rain shwrs C S S S S C C C S L L L L L L L L L Tstms S S S S S S S S S $$