Point Forecast Matrices
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
177 FOCA52 TJSJ 210903 PFMSJU Point Forecast Matrices National Weather Service San Juan PR 503 AM AST Thu Aug 21 2025 PRZ001-212000- Luis Munoz Marin International Airport-San Juan 18.43N 66.00W Elev. 9 ft 503 AM AST Thu Aug 21 2025 Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 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 90 80 88 79 88 Temp 86 89 90 87 83 82 81 81 85 88 88 85 82 81 80 80 85 87 88 86 83 Dewpt 75 75 75 75 75 75 75 74 75 76 76 77 77 76 76 76 76 76 76 76 76 RH 70 64 62 68 77 79 82 79 72 68 68 77 85 85 88 88 75 70 68 72 80 Wind dir E E E E E E E E E NE NE NE NE E E N SE SE SE SE SE Wind spd 11 12 13 12 9 10 10 8 9 10 11 8 6 6 5 4 4 5 8 6 8 Clouds SC SC SC CL CL CL CL CL B2 B2 B1 B1 B1 B1 SC SC CL CL B2 B2 SC PoP 12hr 10 50 50 40 50 QPF 12hr 0.02 0.05 0.57 0.20 0.79 Rain shwrs S S S C C C C C C S S C C C C S Tstms S S S S S S Obvis H H H H H H H H Heat index 95 99101 96 90 89 87 86 94 99 99 96 90 87 86 86 94 98 99 96 91 Max heat 95 101 102 90 94 99 99 88 94 99 99 Heat Y Y Date Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 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 80 92 80 90 80 88 79 89 Temp 80 87 92 84 81 86 90 83 81 85 88 82 80 85 89 82 Dewpt 76 77 77 76 76 76 76 76 75 75 76 76 76 76 77 76 PWind dir SE E E E E E E E Wind char LT GN GN GN GN GN GN GN Avg clouds SC SC SC SC SC SC SC SC SC B1 B1 SC B1 B1 B1 SC PoP 12hr 10 20 40 40 50 50 50 50 Rain shwrs S S S S S C C C C C C C C C C C Tstms S S S S $$ PRZ002-212000- Roosevelt Roads Naval Airstation-Ceiba PR 18.25N 65.63W Elev. 39 ft 503 AM AST Thu Aug 21 2025 Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 90 80 89 77 88 Temp 87 89 90 87 83 82 81 81 86 88 89 85 81 79 78 78 84 87 88 85 82 Dewpt 75 76 76 76 76 75 75 75 76 77 77 77 77 77 77 76 77 78 78 78 77 RH 68 66 64 70 80 79 82 82 72 70 68 77 88 94 97 94 80 75 72 80 85 Wind dir E E E E NE NE NE NE NE NE NE NE NE NE E E SE SE S SE SE Wind spd 12 12 13 11 9 10 11 9 9 11 10 6 6 6 6 3 4 6 9 8 6 Clouds SC SC SC CL CL CL CL FW B2 B2 B2 B2 B2 B2 B2 B2 CL CL SC SC SC PoP 12hr 20 50 60 60 50 QPF 12hr 0.04 0.07 0.81 0.74 0.46 Rain shwrs S S S S L C L L L L C C C C S S C Tstms S S S S S S S S S S Obvis H H H H H H H H Heat index 96100102 98 91 89 87 87 96100102 96 88 94100102 97 90 Max heat 96 102 103 91 96 102 100 87 94 102 102 Heat Y Y Date Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 79 90 81 90 80 89 79 89 Temp 80 86 90 84 82 87 90 83 81 86 89 82 80 85 89 82 Dewpt 77 78 78 77 77 76 77 76 77 77 77 77 76 77 77 76 PWind dir SE E E E E E E E Wind char LT GN GN GN GN GN GN GN Avg clouds SC SC SC SC SC SC SC SC SC B1 B1 B1 B1 B1 B1 B1 PoP 12hr 30 20 40 40 50 50 50 50 Rain shwrs C C S S S C C C C C C C C C C C Tstms S S S S S $$ PRZ007-212000- Mercedita Airport-Ponce PR 18.02N 66.56W Elev. 26 ft 503 AM AST Thu Aug 21 2025 Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 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 91 77 89 77 85 Temp 86 90 91 87 82 80 78 78 84 88 89 85 81 79 78 78 82 85 85 83 81 Dewpt 75 77 77 78 76 74 73 72 74 77 79 79 77 76 75 74 76 78 79 78 77 RH 70 66 64 75 82 82 85 82 72 70 73 82 88 91 91 88 82 80 82 85 88 Wind dir E E SE SE NE NE NE NE NE E SE SE NE NE NE NE E SE SE SE E Wind spd 4 11 13 12 9 6 6 5 5 11 12 2 2 4 3 3 3 9 8 5 4 Clouds CL CL CL SC CL SC CL CL SC SC SC SC B2 B2 B1 B1 CL CL SC SC SC PoP 12hr 10 20 60 60 40 QPF 12hr 0.02 0.02 0.33 0.64 0.43 Rain shwrs S S S S S S L L C C C C C C S Tstms S S Obvis H H H H H H H H Heat index 95103105100 89 84 91100105 98 88 89 97 98 93 88 Max heat 95 105 105 87 91 105 103 87 89 98 98 Heat Y Y Date Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 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 91 78 91 79 90 77 88 Temp 79 86 91 82 79 86 91 83 80 86 90 81 78 84 88 81 Dewpt 75 78 79 77 74 76 77 75 73 75 78 77 74 76 79 77 PWind dir E E E E NE E NE E Wind char LT GN LT GN LT GN LT GN Avg clouds SC SC SC SC CL CL FW SC FW FW SC SC SC SC SC SC PoP 12hr 10 20 0 30 5 30 30 30 Rain shwrs S S S S C C S C C S C C S $$ PRZ008-212000- Rafael Hernandez Airport-Aguadilla PR 18.50N 67.13W Elev. 237 ft 503 AM AST Thu Aug 21 2025 Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 90 78 89 77 87 Temp 85 89 90 86 82 80 79 79 85 88 89 85 81 79 78 78 83 86 87 84 81 Dewpt 75 75 75 75 75 75 75 74 75 76 76 75 76 76 76 75 76 76 76 75 76 RH 72 64 62 70 79 85 88 85 72 68 66 72 85 91 94 91 80 72 70 74 85 Wind dir E E NE E E E E E E NE NE NE NE E E E E E NE NE E Wind spd 12 10 16 16 18 14 14 12 14 14 16 14 12 12 11 11 9 5 3 3 3 Clouds CL CL SC SC CL FW CL CL FW FW FW FW SC SC CL CL CL CL OV OV B2 PoP 12hr 10 10 20 20 70 QPF 12hr 0.02 0.01 0.07 0.02 1.10 Rain shwrs S S S S S S S L L L Tstms S S S Heat index 94 99101 95 89 85 94 99100 94 87 91 96 98 92 87 Max heat 94 101 100 87 94 100 99 86 91 98 98 Heat Y Y Date Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 78 88 78 89 79 88 77 88 Temp 79 84 88 81 79 85 89 82 80 85 88 81 78 84 88 80 Dewpt 75 76 77 77 76 76 77 76 75 75 77 76 76 76 77 76 PWind dir E E E E E E E E Wind char LT GN GN BZ GN BZ GN GN Avg clouds B2 B2 B2 B2 SC SC FW SC CL FW SC SC FW FW SC B1 PoP 12hr 60 70 30 20 5 20 5 70 Rain shwrs L L L L C C S S S S L L Tstms S S S S S S $$ PRZ010-212000- Eugenio Maria de Hosto Airport-Mayaguez PR 18.27N 67.15W Elev. 28 ft 503 AM AST Thu Aug 21 2025 Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 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 94 75 94 75 89 Temp 87 93 94 88 81 79 76 77 87 93 94 88 81 79 76 76 84 88 89 85 81 Dewpt 75 76 77 78 76 75 74 73 75 77 78 77 77 76 76 75 76 78 79 78 77 RH 68 58 58 72 85 88 94 87 68 60 60 70 88 91100 97 77 72 73 80 88 Wind dir E E W NE NE NE NE NE NE NE SE NE NE NE E E E S S SE E Wind spd 3 3 6 5 11 11 11 9 11 5 4 4 9 10 9 5 4 2 3 4 6 Clouds CL CL SC SC CL SC CL CL FW FW FW FW SC SC FW FW CL CL OV OV B1 PoP 12hr 30 20 30 30 70 QPF 12hr 0.08 0.03 0.07 0.04 1.09 Rain shwrs C S S S S C C S S S S L L C Tstms S S Obvis H H H H H H H Heat index 96106109102 87 96107110100 88 93102105 97 88 Max heat 96 109 109 86 96 110 109 87 93 105 103 Heat Y Y Date Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 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 93 75 94 75 94 75 92 Temp 78 87 93 81 76 87 94 81 76 87 94 81 76 86 92 81 Dewpt 76 76 79 78 75 76 78 76 75 76 78 77 75 76 78 77 PWind dir E E E E E E E E Wind char LT LT LT LT LT LT GN LT Avg clouds B1 B1 B2 B1 CL CL FW SC CL CL SC SC FW FW SC B1 PoP 12hr 40 70 0 40 0 40 5 60 Rain shwrs C C L L C C C C L L Tstms S S S S $$ VIZ001-212000- CYRIL E. King Airport-St Thomas USVI 18.33N 64.97W Elev. 23 ft 503 AM AST Thu Aug 21 2025 Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 91 81 91 81 89 Temp 87 90 91 88 84 83 82 82 87 90 91 88 84 83 82 82 86 89 89 87 84 Dewpt 75 76 76 76 76 76 76 76 77 77 77 78 77 77 77 76 77 78 77 78 78 RH 68 64 62 68 77 80 82 82 72 66 64 72 80 82 85 82 75 70 68 75 82 Wind dir E E E E NE NE NE NE NE NE NE NE NE E E SE SE S S SE SE Wind spd 17 18 16 13 16 17 14 13 16 16 12 10 10 10 9 6 6 9 10 9 9 Clouds SC SC SC CL CL CL CL SC B2 B2 B2 B2 B2 B2 B2 B2 CL CL SC SC SC PoP 12hr 20 50 60 60 60 QPF 12hr 0.04 0.08 0.79 0.74 0.61 Rain shwrs S S S S L C L L C C C C L L C C C Tstms S S S S S S S S S S Obvis H H H H H H H H Heat index 96102103 99 93 91 89 89 99103105102 94 92 90 89 97103102100 95 Max heat 96 103 105 93 99 105 105 94 97 103 102 Heat Y Y Date Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 82 92 82 92 81 91 81 91 Temp 82 88 92 85 83 88 92 85 82 87 91 84 82 87 91 84 Dewpt 78 78 77 78 77 77 77 77 78 77 78 78 78 77 77 78 PWind dir SE E E E E E E E Wind char GN BZ BZ BZ BZ BZ BZ GN Avg clouds SC SC SC SC SC SC SC SC SC SC SC SC SC B1 B1 B1 PoP 12hr 30 30 30 30 30 30 40 50 Rain shwrs C C C C S C C C C C C C C C C C Tstms S $$ VIZ002-212000- Henry E. Rohlsen Airport-St Croix USVI 17.70N 64.80W Elev. 74 ft 503 AM AST Thu Aug 21 2025 Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 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 78 89 78 88 Temp 85 88 89 86 82 80 79 79 85 88 89 86 82 80 79 79 84 87 88 85 82 Dewpt 76 76 75 75 75 75 75 76 77 77 77 77 77 76 76 76 77 78 78 78 77 RH 75 68 64 70 79 85 88 91 77 70 68 75 85 88 91 91 80 75 72 80 85 Wind dir E E E E NE NE NE NE NE NE E E E E SE SE SE SE SE SE SE Wind spd 13 14 13 12 13 14 13 12 13 13 10 6 5 5 3 4 6 11 10 9 8 Clouds SC SC SC CL CL CL CL SC B2 B2 SC SC B2 B2 B2 B2 CL CL SC SC SC PoP 12hr 20 50 60 60 60 QPF 12hr 0.03 0.12 0.31 0.74 0.61 Rain shwrs S S S C L L S S C C C C L L C C C Tstms S S S S S S S S S Obvis H H H H H H H Heat index 94 99 99 95 89 85 96100102 97 90 86 94100102 97 90 Max heat 94 100 98 87 96 102 100 88 94 102 102 Heat Y Y Date Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 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 91 79 90 78 90 79 90 Temp 80 86 91 83 80 86 90 82 79 85 90 83 80 86 90 83 Dewpt 77 78 77 77 77 76 77 76 76 77 77 76 77 77 77 76 PWind dir E E E E E E E E Wind char GN BZ BZ BZ BZ GN GN GN Avg clouds SC SC SC SC SC SC SC SC SC SC SC SC SC SC B1 B1 PoP 12hr 30 30 20 20 20 20 50 50 Rain shwrs C C C C S S S S S S S S S C C C Tstms S S S $$