Point Forecast Matrices
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
Versions:
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930 FOCA52 TJSJ 170910 PFMSJU Point Forecast Matrices National Weather Service San Juan PR 510 AM AST Sun Aug 17 2025 PRZ001-172015- Luis Munoz Marin International Airport-San Juan 18.43N 66.00W Elev. 9 ft 510 AM AST Sun Aug 17 2025 Date Sun 08/17/25 Mon 08/18/25 Tue 08/19/25 AST 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 88 79 90 79 91 Temp 85 87 88 85 82 81 80 80 86 89 90 87 83 81 80 80 86 90 91 87 83 Dewpt 74 74 73 73 74 75 74 74 75 74 73 74 74 75 75 75 75 74 75 75 75 RH 70 65 61 67 77 82 82 82 70 61 58 65 74 82 85 85 70 60 60 68 77 Wind dir S S S S S S S S S S S S S S SE SE SE SE SE SE SE Wind spd 12 17 17 14 13 13 14 11 12 16 17 12 9 6 6 8 6 11 13 10 8 Clouds OV OV OV OV B2 B1 B2 B2 B2 B2 B2 B2 SC SC FW FW SC SC B2 B2 SC PoP 12hr 80 60 60 30 60 QPF 12hr 0.76 0.52 0.50 0.34 1.07 Rain shwrs L L D L L C C L C C L L C C C C L L C Tstms S S C S S S S S S S S S S Heat index 93 95 96 92 88 87 84 84 95 98 98 95 90 87 85 85 95 99102 96 90 Max heat 93 97 96 87 95 99 97 88 95 102 101 Flood A A A A A A A A A A A A High Surf Y Y Y Y Y Y Y Y Date Wed 08/20/25 Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 AST 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 79 93 79 91 79 90 78 90 Temp 80 88 93 84 80 86 91 83 80 86 90 82 79 85 90 83 Dewpt 74 75 77 77 75 75 76 76 75 76 77 76 76 76 77 76 PWind dir SE E E E E NE E E Wind char LT GN GN GN GN GN BZ BZ Avg clouds SC SC SC SC SC SC SC B1 B1 B1 B1 B1 B2 B1 B1 B2 PoP 12hr 30 30 20 50 40 50 50 60 Rain shwrs C C C C S S C C C C C C C C L L Tstms S S S S S S S $$ PRZ002-172015- Roosevelt Roads Naval Airstation-Ceiba PR 18.25N 65.63W Elev. 39 ft 510 AM AST Sun Aug 17 2025 Date Sun 08/17/25 Mon 08/18/25 Tue 08/19/25 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 88 80 90 80 91 Temp 84 87 88 86 83 82 80 81 86 89 90 87 83 82 81 81 87 90 91 88 84 Dewpt 75 75 74 75 75 76 75 75 76 76 75 75 75 75 75 75 76 75 75 75 74 RH 74 68 63 70 77 82 85 82 72 66 62 68 77 79 82 82 70 62 60 66 72 Wind dir SW S S S S S S S S S S S S S S SE SE SE SE SE SE Wind spd 19 18 19 18 18 17 18 16 16 17 16 13 10 10 9 10 10 12 11 10 8 Clouds OV OV OV OV B2 B2 B2 OV B2 B2 B2 B2 SC SC SC SC B2 B2 B2 B2 B2 PoP 12hr 90 60 60 50 50 QPF 12hr 0.83 0.66 0.70 1.00 0.23 Rain shwrs D D D L L C L L L L L L C C S S C C C C C Tstms C C C S S S S S S S S S Heat index 92 96 97 95 90 89 85 87 96100101 96 90 89 87 87 98101102 98 91 Max heat 92 98 97 89 96 101 101 90 98 102 102 Flood A A A A A A A A A A A A High Surf Y Y Y Y Y Y Y Y Date Wed 08/20/25 Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 81 91 81 90 80 90 79 89 Temp 82 87 91 84 82 87 90 83 81 86 90 83 80 85 89 83 Dewpt 75 76 78 77 76 76 76 76 77 77 78 77 77 77 77 77 PWind dir E E E E NE NE E SE Wind char GN GN GN GN GN BZ BZ WY Avg clouds B2 B2 B1 SC SC SC B1 B1 B1 B1 SC SC B2 B2 B2 B2 PoP 12hr 50 50 30 50 40 60 60 60 Rain shwrs C C C C S C C C C C C L L L L L Tstms S S S S S S S S S $$ PRZ007-172015- Mercedita Airport-Ponce PR 18.02N 66.56W Elev. 26 ft 510 AM AST Sun Aug 17 2025 Date Sun 08/17/25 Mon 08/18/25 Tue 08/19/25 AST 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 78 86 78 88 Temp 81 84 84 82 80 79 78 79 83 86 86 84 81 80 78 79 84 87 88 85 81 Dewpt 75 74 74 74 75 75 74 74 75 75 75 75 74 74 74 74 75 74 74 74 75 RH 82 72 72 77 85 88 88 85 77 70 70 74 79 82 88 85 74 65 63 70 82 Wind dir SW SW SW SW S S S S S S S S SE SE SE SE SE SE SE SE E Wind spd 10 12 12 11 11 11 10 10 11 13 13 9 4 4 3 8 8 10 10 6 5 Clouds OV OV OV OV OV B2 OV B2 OV OV OV OV B1 B1 B2 B2 SC SC SC SC SC PoP 12hr 90 80 80 50 30 QPF 12hr 0.89 0.90 0.92 0.66 0.12 Rain shwrs D D D D D L L L L D D D C C C C S S C C S Tstms C C C S S S S S S S S S S S S S Heat index 87 91 91 88 85 90 95 95 92 86 84 92 95 97 93 87 Max heat 87 91 91 85 90 95 95 84 92 97 95 Flood A A A A A A A A A A A A Date Wed 08/20/25 Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 AST 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 77 89 76 91 76 90 77 87 Temp 78 84 89 80 77 85 91 81 77 85 90 81 78 83 87 80 Dewpt 72 75 74 74 72 70 70 74 73 73 75 73 72 72 72 73 PWind dir E E E E NE E NE E Wind char LT GN LT GN LT GN GN BZ Avg clouds SC SC SC SC FW FW SC SC SC SC SC SC SC B1 B2 B1 PoP 12hr 10 20 5 30 20 30 50 50 Rain shwrs S S S S C C S S S C C C C C Tstms S S $$ PRZ008-172015- Rafael Hernandez Airport-Aguadilla PR 18.50N 67.13W Elev. 237 ft 510 AM AST Sun Aug 17 2025 Date Sun 08/17/25 Mon 08/18/25 Tue 08/19/25 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 86 78 88 77 89 Temp 83 85 86 84 81 80 78 79 84 87 88 85 81 79 78 78 84 88 89 85 81 Dewpt 76 75 75 75 75 76 75 75 75 75 75 75 75 75 74 74 74 74 74 75 75 RH 80 72 70 74 82 88 91 88 74 68 66 72 82 88 88 88 72 63 61 72 82 Wind dir SW SW SW S S S S S S S S S S S S S SE S S E NE Wind spd 18 18 26 24 21 21 23 18 18 20 21 18 14 12 10 10 9 10 8 3 1 Clouds B2 B2 B2 B1 B2 B1 B2 B2 B1 B1 B2 B2 SC SC SC SC SC SC B2 B2 FW PoP 12hr 60 50 60 20 60 QPF 12hr 0.48 0.31 0.31 0.03 1.18 Rain shwrs L L C C C C C C C C L L S S S S S S L L S Tstms S S S S S S S S S S Heat index 91 94 95 92 87 86 92 96 98 94 87 91 97 98 94 87 Max heat 91 95 95 86 92 98 96 85 91 98 97 Flood A A A A A A A A A A A A High Surf Y Y Y Y Y Y Y Y Date Wed 08/20/25 Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 77 88 77 89 78 88 77 86 Temp 78 84 88 81 78 84 89 82 79 84 88 81 78 83 86 80 Dewpt 73 72 77 77 75 75 76 75 76 76 77 76 76 76 77 76 PWind dir E NE E E E NE E E Wind char LT LT LT BZ BZ BZ BZ WY Avg clouds FW FW SC B1 FW FW SC B1 SC FW SC SC FW SC SC B1 PoP 12hr 5 50 5 50 5 30 10 60 Rain shwrs S S C C C C S S C C S S L L Tstms S S S S S S $$ PRZ010-172015- Eugenio Maria de Hosto Airport-Mayaguez PR 18.27N 67.15W Elev. 28 ft 510 AM AST Sun Aug 17 2025 Date Sun 08/17/25 Mon 08/18/25 Tue 08/19/25 AST 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 88 77 90 77 91 Temp 83 87 88 85 81 79 78 78 85 89 90 86 81 79 78 79 86 90 91 86 80 Dewpt 75 75 75 74 75 76 75 75 75 75 75 75 75 75 75 75 75 74 74 74 75 RH 77 68 66 70 82 91 91 91 72 64 62 70 82 88 91 88 70 60 58 68 85 Wind dir SW SW SW S S S S S S S S S S S SE SE SE S S SE SE Wind spd 13 14 21 19 17 18 19 16 17 18 18 16 12 10 10 12 11 14 14 12 6 Clouds B2 B2 OV B2 B2 B2 B2 B2 B2 B2 OV OV SC SC SC SC SC SC B2 B2 FW PoP 12hr 70 60 70 20 50 QPF 12hr 0.64 0.40 0.50 0.06 0.57 Rain shwrs L L L L L L C C C C L L S S S S S S C C S Tstms S S S S S S S S S S S S Heat index 90 96 98 93 87 94 99101 95 87 95 99101 94 85 Max heat 90 98 96 85 94 101 99 87 95 101 99 Flood A A A A A A A A A A A A Date Wed 08/20/25 Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 AST 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 75 94 74 94 75 93 75 91 Temp 76 87 94 81 75 86 94 81 76 86 93 81 76 85 91 80 Dewpt 73 72 78 78 75 75 77 77 75 77 79 77 76 77 78 76 PWind dir SE SE E E E NE NE E Wind char LT LT LT LT GN LT BZ BZ Avg clouds FW FW SC B1 FW FW SC B1 SC FW SC B1 SC SC B1 B1 PoP 12hr 5 50 5 50 5 50 20 60 Rain shwrs S S C C C C S S C C S S L L Tstms S S S S S S S S $$ VIZ001-172015- CYRIL E. King Airport-St Thomas USVI 18.33N 64.97W Elev. 23 ft 510 AM AST Sun Aug 17 2025 Date Sun 08/17/25 Mon 08/18/25 Tue 08/19/25 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 89 82 90 82 92 Temp 86 88 89 87 84 83 82 83 87 90 90 88 85 84 82 83 88 91 92 89 85 Dewpt 76 75 76 76 76 75 75 76 76 75 75 76 76 76 75 75 75 76 74 75 74 RH 72 66 66 70 77 77 79 80 70 62 62 68 75 77 79 77 66 62 56 64 70 Wind dir S S S S S S S S S S S S S SE SE SE SE SE SE SE E Wind spd 28 27 25 23 20 23 21 20 20 19 18 16 13 16 12 12 12 14 16 11 12 Wind gust 41 40 Clouds OV OV OV B2 B2 B2 B2 B2 B2 B2 B2 B2 SC SC SC SC B1 B1 B1 B1 B2 PoP 12hr 80 60 50 40 50 QPF 12hr 0.73 0.53 0.52 0.99 0.18 Rain shwrs D D L L C L L C C C C C C C C C C C C C C Tstms C C S S S S S S S S S S Heat index 96 98100 98 93 90 89 91 98101101 99 94 93 89 90 98103102 99 93 Max heat 96 100 100 93 98 101 101 93 98 103 102 Flood A A A A A A A A A A A A High Surf Y Y Y Y Y Y Y Y Date Wed 08/20/25 Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 82 93 81 92 81 92 80 92 Temp 83 89 93 85 82 88 92 85 82 88 92 84 81 87 92 85 Dewpt 76 75 77 76 76 77 76 76 77 78 77 77 77 78 77 77 PWind dir E E E E NE NE E SE Wind char BZ BZ BZ BZ BZ BZ WY WY Avg clouds B2 B1 SC SC SC SC SC B1 B1 B1 SC SC B2 B2 B2 B2 PoP 12hr 50 30 30 40 40 50 60 60 Rain shwrs C C C S S C C C C C C C C L L L Tstms S S S S S $$ VIZ002-172015- Henry E. Rohlsen Airport-St Croix USVI 17.70N 64.80W Elev. 74 ft 510 AM AST Sun Aug 17 2025 Date Sun 08/17/25 Mon 08/18/25 Tue 08/19/25 AST 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 89 79 90 79 90 Temp 85 88 89 86 82 81 80 80 86 89 90 87 83 81 80 80 86 89 90 87 83 Dewpt 76 76 75 75 75 75 75 76 76 76 76 76 75 75 75 75 75 75 72 75 74 RH 75 68 64 70 79 82 85 88 72 66 64 70 77 82 85 85 70 64 56 68 74 Wind dir S S S S S S S S S S S S SE SE SE SE SE SE SE E E Wind spd 23 23 23 20 18 17 17 17 18 19 18 14 10 11 10 9 11 12 12 11 10 Wind gust 33 33 Clouds OV OV B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 SC SC SC SC SC SC SC SC B2 PoP 12hr 70 60 50 30 50 QPF 12hr 0.69 0.56 0.45 0.98 0.13 Rain shwrs L L L L L L L C C C C C C C C C C C C C C Tstms S S S S S S S S S S S S Heat index 94 99 99 95 89 87 85 86 96100102 98 90 87 85 85 95 99 97 96 90 Max heat 94 100 99 89 96 102 100 89 95 99 97 Flood A A A A A A A A A A A A High Surf Y Y Y Y Y Y Y Y Date Wed 08/20/25 Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 AST 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 79 90 78 90 78 90 78 89 Temp 80 86 90 82 79 85 90 82 79 85 90 82 79 85 89 82 Dewpt 76 76 77 76 75 76 76 75 76 77 77 76 76 77 77 77 PWind dir E E E E NE E E SE Wind char GN BZ BZ BZ BZ BZ WY WY Avg clouds B2 B1 SC SC SC SC SC SC B1 B1 SC B1 B2 B2 B2 B2 PoP 12hr 50 30 20 40 40 60 60 60 Rain shwrs C C C S S S S C C C S L L L L L Tstms S S S S S $$