Area Forecast Matrices
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
742 FOCA52 TJSJ 180902 AFMSJU Area Forecast Matrices National Weather Service San Juan PR 502 AM AST Mon Aug 18 2025 PRZ001-182000- San Juan and Vicinity- Including the cities of Bayamon, Carolina, Catano, Guaynabo, San Juan, Toa Alta, Toa Baja, and Trujillo Alto 502 AM AST Mon Aug 18 2025 Date Mon 08/18/25 Tue 08/19/25 Wed 08/20/25 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 81 88 89 74 77 83 83 91 93 73 77 83 83 90 93 Temp 84 87 88 85 81 79 78 78 86 90 91 86 81 79 78 78 85 89 90 86 81 Dewpt 77 78 78 78 76 77 76 76 77 78 77 77 76 77 76 76 78 78 78 77 76 RH 80 75 72 80 85 94 94 94 75 68 64 75 85 94 94 94 80 70 68 75 85 Wind dir S S S S S SE SE SE SE SE SE SE SE SE SE SE SE SE E E E Wind spd 13 17 17 11 6 6 5 5 8 11 11 10 6 5 5 5 6 12 14 11 9 Clouds SC B1 B2 B2 SC SC SC SC SC FW SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 60 30 30 30 30 QPF 12hr 0.51-0.76 0.03-0.25 0.06 0.03-0.13 0.04-0.14 Snow 12hr MM MM MM Rain shwrs IS SC SC SC SC IS IS SC IS SC SC IS IS IS IS IS IS IS IS IS Tstms IS IS IS Obvis H H H H H H H H H Heat index 94101102 96 87 83 80 97104104 97 88 83 80 97105105 98 88 Max heat 100 110 109 94 104 114 110 95 104 115 112 Flood A A A A High Surf Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 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 90 77 88 77 87 76 89 Temp 78 85 90 81 78 84 88 80 77 83 87 80 77 84 89 81 Dewpt 76 76 76 75 75 77 78 77 76 77 78 76 76 77 78 76 PWind dir E E E NE NE SE SE E Wind char LT GN LT GN GN BZ GN GN Avg clouds SC SC SC SC SC SC B1 B1 B2 B2 B2 B1 SC SC B1 B1 PoP 12hr 10 30 30 60 60 60 30 60 Rain shwrs IS IS IS SC IS SC SC NM NM NM NM NM IS IS NM NM Tstms IS IS IS IS IS IS IS $$ PRZ002-182000- Northeast- Including the cities of Ceiba, Canovanas, Fajardo, Humacao, Loiza, Luquillo, Naguabo, and Rio Grande 502 AM AST Mon Aug 18 2025 Date Mon 08/18/25 Tue 08/19/25 Wed 08/20/25 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 75 86 90 67 77 83 75 88 93 67 77 83 75 88 92 Temp 82 85 86 83 80 78 77 78 84 87 88 85 80 79 78 78 84 87 88 84 80 Dewpt 76 78 77 77 76 77 76 76 76 77 76 76 75 76 76 76 76 77 77 76 75 RH 82 80 75 82 88 97 97 94 77 72 68 75 85 91 94 94 77 72 70 77 85 Wind dir S S S S S S SE SE SE SE SE SE SE SE SE SE SE SE SE E E Wind spd 16 18 16 11 8 9 9 8 9 10 10 11 8 8 8 9 10 13 13 11 10 Wind gust 26 18 19 Clouds B2 B1 B1 B2 B1 SC B1 B1 B1 SC SC SC SC SC B1 B1 B1 B1 SC SC SC PoP 12hr 60 40 40 50 50 QPF 12hr 0.49-0.79 0.12-0.36 0.08 0.12-0.18 0.11-0.29 Snow 12hr MM MM MM Rain shwrs SC SC SC NM SC IS SC SC SC IS SC SC SC SC SC SC SC SC SC SC IS Tstms IS IS IS IS IS IS Obvis H H H Heat index 90 97 97 92 85 82 93 99 99 94 86 83 80 93 99100 94 86 Max heat 99 108 109 95 103 111 110 95 102 110 109 Flood A A A A High Surf Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 77 88 76 87 76 86 76 87 Temp 78 83 88 80 77 83 87 79 77 82 86 79 77 83 87 80 Dewpt 75 75 75 74 75 75 76 75 75 76 76 75 75 76 76 75 PWind dir E E NE NE NE SE SE E Wind char GN GN GN GN GN BZ GN BZ Avg clouds SC SC SC SC SC B1 B1 B1 B2 B2 B2 B2 B1 B1 B1 B1 PoP 12hr 30 30 40 60 60 60 40 60 Rain shwrs IS IS SC SC SC SC SC NM NM NM NM NM SC SC SC SC Tstms IS IS IS IS IS IS IS $$ PRZ003-182000- Southeast- Including the cities of Arroyo, Guayama, Maunabo, Patillas, Salinas, and Yabucoa 502 AM AST Mon Aug 18 2025 Date Mon 08/18/25 Tue 08/19/25 Wed 08/20/25 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 76 85 89 70 77 83 76 87 91 69 77 83 77 87 92 Temp 82 85 85 83 80 79 77 78 83 86 87 84 80 78 77 78 83 87 87 84 80 Dewpt 77 78 78 78 76 77 76 76 77 77 77 77 75 76 76 76 76 78 77 77 75 RH 85 80 80 85 88 94 97 94 82 75 72 80 85 94 97 94 80 75 72 80 85 Wind dir S S S S S S SE SE SE SE SE SE E E E E E SE SE E E Wind spd 17 17 16 11 6 8 8 8 9 10 10 8 6 5 6 8 9 12 12 10 9 Wind gust 32 32 28 21 23 23 Clouds OV B2 B2 OV B2 B1 B1 B1 B1 SC SC SC SC SC B1 B1 B1 B1 SC SC SC PoP 12hr 70 60 40 40 40 QPF 12hr 0.78-0.92 0.31-0.37 0.09 0.09-0.18 0.09-0.29 Snow 12hr MM MM MM Rain shwrs NM NM SC NM NM SC SC SC SC SC SC SC SC SC SC SC SC SC IS IS IS Tstms IS IS IS IS IS IS Obvis H H H H H Heat index 90 97 98 93 84 82 80 92 98 99 93 85 82 80 92100100 94 85 Max heat 100 112 111 95 101 110 109 94 100 112 110 Flood A A A A Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 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 76 88 75 88 76 85 76 87 Temp 77 84 88 80 76 83 88 80 77 82 85 79 77 83 87 80 Dewpt 75 74 75 73 74 75 76 75 75 75 77 75 75 76 76 75 PWind dir E E NE NE NE SE E E Wind char GN GN LT GN GN BZ GN GN Avg clouds SC SC SC SC FW SC SC B1 B2 B2 B2 B1 SC B1 B1 B1 PoP 12hr 20 30 20 50 60 60 40 50 Rain shwrs IS IS IS SC IS IS IS SC SC NM NM NM SC SC SC SC Tstms IS IS IS $$ PRZ004-182000- Eastern Interior- Including the cities of Aguas Buenas, Caguas, Cayey, Cidra, Comerio, Gurabo, Juncos, Las Piedras, and San Lorenzo 502 AM AST Mon Aug 18 2025 Date Mon 08/18/25 Tue 08/19/25 Wed 08/20/25 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 76 84 89 70 74 78 76 86 93 69 74 78 77 87 93 Temp 81 84 84 81 78 76 75 75 82 85 86 82 78 76 74 75 82 86 87 83 78 Dewpt 75 76 77 76 74 75 74 74 76 76 75 75 74 74 73 74 75 76 75 75 73 RH 82 77 80 85 88 97 97 97 82 75 70 79 88 94 97 97 79 72 68 77 85 Wind dir S S S S S S S SE SE SE SE SE SE SE SE SE SE SE SE E E Wind spd 14 17 16 10 5 6 5 5 8 9 9 8 5 4 4 5 8 11 12 9 6 Clouds B2 B2 B2 B2 B1 B1 B1 B1 SC SC SC SC SC SC SC SC B1 B1 SC SC SC PoP 12hr 70 50 30 30 30 QPF 12hr 0.66-0.88 0.18-0.36 0.08 0.04-0.17 0.05-0.26 Snow 12hr MM MM MM Rain shwrs NM NM NM NM SC SC SC SC SC IS SC SC IS IS SC SC SC SC IS IS IS Tstms IS IS IS IS IS Obvis H H H H H H H Heat index 86 93 94 88 88 95 95 89 80 88 96 96 89 80 Max heat 96 106 104 88 101 110 108 89 100 110 108 Flood A A A A Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 73 87 73 86 73 83 73 85 Temp 74 82 87 77 74 81 86 77 74 79 83 76 74 81 85 77 Dewpt 73 74 73 72 72 74 75 74 74 75 75 74 73 75 75 73 PWind dir E E NE NE NE SE SE SE Wind char LT GN LT GN GN BZ GN GN Avg clouds SC SC SC SC SC SC SC B1 B2 B2 B2 B1 SC SC B1 B1 PoP 12hr 20 30 30 60 60 60 40 50 Rain shwrs IS IS IS SC IS IS IS IS NM NM NM NM SC SC SC SC Tstms IS IS IS IS IS IS $$ PRZ005-182000- North Central- Including the cities of Arecibo, Barceloneta, Dorado, Florida, Manati, Vega Alta, and Vega Baja 502 AM AST Mon Aug 18 2025 Date Mon 08/18/25 Tue 08/19/25 Wed 08/20/25 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 83 87 89 73 76 83 84 91 94 72 75 83 84 91 94 Temp 83 86 87 84 79 78 77 77 85 90 91 86 80 78 76 77 85 90 91 86 80 Dewpt 77 79 78 77 76 76 76 75 78 78 77 76 76 76 75 74 78 79 78 77 76 RH 82 80 75 80 91 94 97 94 80 68 64 72 88 94 97 90 80 70 66 75 88 Wind dir S S S S S SE SE SE SE SE SE SE SE SE SE SE SE E E E E Wind spd 9 12 12 9 6 5 5 4 6 8 8 6 5 4 4 3 4 10 12 8 8 Wind gust 24 23 18 Clouds SC B1 OV B2 SC SC SC FW FW CL B1 B1 FW FW FW FW FW FW B1 B1 FW PoP 12hr 70 30 40 5 30 QPF 12hr 0.62-0.90 0.02-0.11 0.03-0.60 0.01 0.04-0.20 Snow 12hr MM MM MM Rain shwrs IS SC NM NM SC IS IS IS IS SC SC IS IS IS IS IS IS SC SC Tstms IS IS IS IS IS IS IS Obvis H H H H H H H Heat index 93101101 94 83 97106106 97 86 97107107 98 86 Max heat 100 110 109 93 105 117 113 94 105 117 114 Flood A A A A High Surf Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 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 90 75 88 75 87 75 89 Temp 76 84 90 80 76 83 88 80 76 83 87 79 76 84 89 80 Dewpt 75 76 77 76 75 77 78 77 76 78 78 76 75 77 78 76 PWind dir E E E NE E E SE E Wind char LT GN GN GN GN BZ LT GN Avg clouds FW FW SC SC FW FW SC B1 B1 B1 B1 B1 SC SC SC B1 PoP 12hr 5 20 10 50 50 50 10 60 Rain shwrs IS IS IS SC SC SC SC SC SC IS IS NM NM Tstms IS IS $$ PRZ006-182000- Central Interior- Including the cities of Aibonito, Barranquitas, Ciales, Coamo, Corozal, Jayuya, Morovis, Naranjito, Orocovis, and Villalba 502 AM AST Mon Aug 18 2025 Date Mon 08/18/25 Tue 08/19/25 Wed 08/20/25 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 75 81 90 64 73 77 75 83 92 63 72 77 75 84 92 Temp 78 81 81 79 76 75 73 74 79 82 83 80 76 74 73 73 79 83 84 80 76 Dewpt 74 76 75 74 73 74 73 73 74 75 74 73 72 73 72 72 74 75 74 74 72 RH 88 85 82 85 90 97100 97 85 79 74 79 87 97 97 97 85 77 72 82 87 Wind dir S S S S S S S SE SE SE SE SE SE SE SE SE SE SE SE E E Wind spd 12 13 13 9 5 5 5 4 6 8 8 6 4 3 3 3 4 9 11 8 5 Wind gust 29 31 27 20 21 Clouds B1 B2 OV OV B1 SC B1 SC SC FW B1 B1 SC SC FW FW SC SC SC SC FW PoP 12hr 80 50 40 20 30 QPF 12hr 0.71-0.99 0.06-0.35 0.05-0.51 0.00-0.12 0.04-0.20 Snow 12hr MM MM MM Rain shwrs SC NM NM NM SC SC SC IS IS IS SC SC IS IS IS IS IS IS IS IS IS Tstms IS IS IS IS IS Obvis H H H H H H H H H Heat index 81 87 87 82 83 89 90 84 83 91 91 84 Max heat 98 110 107 87 100 110 107 87 100 113 110 Flood A A A A Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 71 84 71 82 72 80 72 82 Temp 72 79 84 76 72 78 82 75 73 77 80 75 72 78 82 75 Dewpt 71 72 72 71 71 73 74 73 72 74 74 72 72 74 75 72 PWind dir E E NE NE NE SE SE E Wind char LT LT LT GN GN BZ LT GN Avg clouds FW FW SC SC FW FW SC B1 B2 B2 B2 B1 SC SC B1 B1 PoP 12hr 5 10 10 50 50 60 20 60 Rain shwrs IS IS IS IS IS IS SC SC SC SC NM IS IS IS NM Tstms IS IS IS IS $$ PRZ007-182000- Ponce and Vicinity- Including the cities of Guayanilla, Juana Diaz, Yauco, Penuelas, Ponce, and Santa Isabel 502 AM AST Mon Aug 18 2025 Date Mon 08/18/25 Tue 08/19/25 Wed 08/20/25 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 75 84 89 66 77 83 75 86 92 65 76 83 75 87 93 Temp 81 83 84 82 79 78 77 78 82 85 86 83 79 78 77 77 83 86 87 83 79 Dewpt 75 77 76 76 75 75 74 74 75 76 75 75 74 74 73 73 75 76 76 75 74 RH 82 82 77 82 88 91 90 88 79 75 70 77 85 88 87 87 77 72 70 77 85 Wind dir S S S S S SE SE SE SE SE SE SE E E E E E SE SE E E Wind spd 13 14 14 10 5 6 8 6 9 10 10 8 5 5 6 5 8 10 11 9 6 Wind gust 32 31 28 20 21 23 21 23 24 19 Clouds B2 OV OV OV B2 B1 B1 SC FW SC SC SC SC SC SC SC SC SC SC SC FW PoP 12hr 80 60 20 20 20 QPF 12hr 0.90-1.00 0.18-0.36 0.02-0.41 0.01-0.12 0.01-0.15 Snow 12hr MM MM MM Rain shwrs NM NM NM D NM SC SC SC IS IS IS IS IS IS IS IS IS IS IS IS Tstms IS IS IS IS IS IS Obvis H H H H H H H H H Heat index 87 92 93 89 83 80 89 95 95 90 84 80 90 97 97 91 83 Max heat 97 108 109 95 99 108 106 95 99 110 108 Flood A A A A Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 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 88 74 88 75 84 76 86 Temp 76 83 88 79 75 83 88 79 76 81 84 79 76 82 86 79 Dewpt 71 72 73 73 71 73 75 74 73 74 75 74 73 74 75 74 PWind dir E E NE E NE SE E E Wind char LT GN LT LT LT BZ GN GN Avg clouds FW FW FW SC FW FW SC B2 B1 B1 B1 B1 SC SC SC B1 PoP 12hr 5 10 5 60 50 50 20 50 Rain shwrs IS IS IS IS SC SC SC SC SC IS IS SC SC Tstms IS IS IS $$ PRZ008-182000- Northwest- Including the cities of Aguadilla, Camuy, Hatillo, Isabela, and Quebradillas 502 AM AST Mon Aug 18 2025 Date Mon 08/18/25 Tue 08/19/25 Wed 08/20/25 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 83 86 89 71 75 83 84 90 94 70 74 83 84 90 94 Temp 82 85 86 83 79 77 76 77 84 89 90 85 79 77 75 76 84 89 90 85 79 Dewpt 75 77 76 75 75 75 74 74 75 76 76 75 75 74 74 73 75 77 77 76 76 RH 79 77 72 77 88 94 94 90 74 66 64 72 88 90 97 90 74 68 66 75 91 Wind dir S S S S S S SE SE SE SE SE SE S SE SE SE SE E E NE E Wind spd 12 17 17 13 9 5 6 4 6 8 5 3 3 3 3 2 4 6 6 3 3 Wind gust 26 29 31 26 23 17 17 Clouds SC B2 B2 B2 B1 SC SC FW CL CL B2 B2 CL CL CL CL CL CL B1 B1 FW PoP 12hr 70 40 60 0 40 QPF 12hr 0.70-0.88 0.02-0.15 0.60 0 0.20 Snow 12hr MM MM MM Rain shwrs IS SC NM NM SC IS IS NM NM SC SC Tstms IS IS IS IS IS IS IS IS Obvis H H H H H H H Heat index 89 96 96 89 80 92101101 93 82 91101102 94 82 Max heat 97 106 102 93 102 113 109 93 100 113 110 Flood A A A A High Surf Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 74 88 74 87 75 86 74 88 Temp 75 83 88 79 75 82 87 79 76 82 86 78 75 83 88 79 Dewpt 73 74 75 75 73 75 76 75 75 76 76 74 74 75 76 75 PWind dir E E E NE NE E SE E Wind char LT GN GN GN GN BZ GN GN Avg clouds FW FW SC SC FW FW SC B1 B1 B1 B1 B1 SC SC SC B1 PoP 12hr 5 30 5 40 40 50 10 60 Rain shwrs SC SC SC SC SC SC SC SC IS IS NM NM Tstms IS IS $$ PRZ009-182000- Western Interior- Including the cities of Adjuntas, Lares, Las Marias, Maricao, Sabana Grande, San Sebastian, and Utuado 502 AM AST Mon Aug 18 2025 Date Mon 08/18/25 Tue 08/19/25 Wed 08/20/25 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 75 81 88 67 73 77 75 84 94 66 72 77 75 85 94 Temp 78 81 81 79 76 75 74 74 80 83 84 81 76 75 73 74 80 84 85 81 76 Dewpt 74 75 75 73 73 74 73 72 74 75 73 72 72 73 72 71 73 75 74 72 73 RH 88 82 82 82 90 97 97 93 82 77 70 74 87 94 97 90 79 74 70 74 90 Wind dir S S S S S S SE SE SE SE SE SE SE SE SE SE SE SE SE E E Wind spd 11 13 13 10 6 5 5 5 6 9 8 5 4 3 4 3 4 8 9 4 3 Wind gust 25 29 29 21 20 24 23 19 25 24 Clouds SC B2 OV OV B1 B1 B1 SC FW FW B1 B1 FW FW FW FW FW FW B1 B1 FW PoP 12hr 80 50 50 5 40 QPF 12hr 0.81-1.00 0.10-0.24 0.02-0.60 0.01 0.01-0.20 Snow 12hr MM MM MM Rain shwrs IS NM D D SC SC SC IS SC SC IS IS SC SC Tstms IS IS IS IS IS IS IS IS Obvis H H H H H H H Heat index 81 87 87 82 84 91 91 84 85 92 93 85 Max heat 93 103 101 85 99 111 106 87 99 111 108 Flood A A A A Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 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 71 85 71 84 72 82 72 84 Temp 72 80 85 76 72 79 84 76 73 78 82 75 73 79 84 76 Dewpt 71 72 72 72 71 72 74 72 72 74 74 72 72 73 74 72 PWind dir E E E NE NE SE SE E Wind char LT LT LT GN GN BZ LT GN Avg clouds FW FW SC SC FW FW SC B2 B1 B1 B1 B1 SC SC SC B1 PoP 12hr 5 40 5 60 40 50 10 60 Rain shwrs SC SC NM SC SC SC SC SC IS IS NM NM Tstms IS IS IS IS $$ PRZ010-182000- Mayaguez and Vicinity- Including the cities of Aguada, Anasco, Hormigueros, Mayaguez, Moca, Rincon, and San German 502 AM AST Mon Aug 18 2025 Date Mon 08/18/25 Tue 08/19/25 Wed 08/20/25 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 75 85 89 71 77 83 75 90 94 72 76 83 77 90 94 Temp 82 85 85 83 80 78 77 78 85 89 90 85 80 78 77 77 85 89 90 85 80 Dewpt 76 78 78 76 76 76 76 75 77 78 77 76 76 75 74 73 76 78 78 77 77 RH 82 80 80 80 88 94 97 91 77 70 66 75 88 91 90 87 75 70 68 77 91 Wind dir S S S S S S SE SE SE SE SE SE SE SE SE E E SE SE E E Wind spd 17 19 20 16 13 11 11 10 11 13 12 10 8 8 8 5 6 10 11 6 4 Wind gust 31 31 31 27 25 24 24 23 24 24 24 24 21 20 20 19 21 24 24 20 20 Clouds SC B2 OV OV B2 B1 B1 FW FW FW B1 B1 CL CL FW FW FW FW SC SC FW PoP 12hr 80 60 40 0 40 QPF 12hr 0.66-1.00 0.11-0.21 0.01-0.60 0 0.01-0.20 Snow 12hr MM MM MM Rain shwrs IS SC D NM NM SC SC IS SC SC IS IS SC SC Tstms IS IS IS IS IS IS IS IS Obvis H H H H H H H H H Heat index 90 97 97 91 83 80 95103103 95 85 80 94103104 96 84 Max heat 98 108 104 93 103 115 110 94 100 116 113 Flood A A A A High Surf Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 75 90 75 89 75 88 76 89 Temp 76 84 90 80 76 84 89 80 76 83 88 80 76 84 89 80 Dewpt 74 74 76 75 73 75 77 76 75 76 77 75 75 76 77 75 PWind dir E E E NE NE E SE SE Wind char LT LT GN GN GN BZ GN GN Avg clouds FW FW SC SC FW FW SC B1 SC B1 B1 B1 SC SC SC B1 PoP 12hr 5 40 5 50 30 50 20 60 Rain shwrs SC SC NM SC SC SC SC SC IS IS NM NM Tstms IS IS IS IS $$ PRZ011-182000- Southwest- Including the cities of Cabo Rojo, Guanica, and Lajas 502 AM AST Mon Aug 18 2025 Date Mon 08/18/25 Tue 08/19/25 Wed 08/20/25 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 83 87 89 74 77 83 84 90 93 73 77 83 84 91 94 Temp 83 86 87 84 80 79 78 79 85 89 90 86 81 79 78 78 86 90 91 86 80 Dewpt 77 79 79 78 77 77 76 75 78 79 78 77 77 76 74 74 77 79 78 78 77 RH 82 80 77 82 91 94 94 88 80 73 68 75 88 91 88 88 75 70 66 77 91 Wind dir S S S S S SE SE SE SE SE SE SE SE E E E E SE SE SE E Wind spd 17 19 19 14 11 12 12 12 14 16 14 13 11 10 10 9 11 16 16 12 10 Wind gust 33 35 35 29 25 25 26 27 28 29 26 25 25 23 23 20 24 29 28 25 23 Clouds B2 OV OV OV B2 B1 B1 SC FW FW FW FW FW FW SC SC FW FW FW FW FW PoP 12hr 80 60 5 20 5 QPF 12hr 1.00 0.20 0.01 0.03 0.01-0.15 Snow 12hr MM MM MM Rain shwrs NM NM D D NM SC SC IS IS IS IS IS IS IS IS IS IS IS Tstms IS IS IS IS IS IS Obvis H H H H H H H H H Heat index 92100100 95 86 81 80 97106105 98 88 83 96106107 98 86 Max heat 96 108 107 94 100 113 110 94 100 114 111 Flood A A A A Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 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 92 74 92 75 90 76 91 Temp 76 85 92 80 75 85 92 81 76 84 90 81 77 85 91 81 Dewpt 73 74 77 76 72 74 77 77 74 76 77 76 74 76 78 76 PWind dir E E NE E NE SE E SE Wind char GN GN LT LT GN BZ BZ BZ Avg clouds FW FW SC SC FW FW SC B2 B1 B1 B1 B1 SC SC SC SC PoP 12hr 5 30 5 60 40 50 10 50 Rain shwrs SC SC NM NM SC SC SC SC IS IS SC SC Tstms IS IS $$ PRZ012-182000- Culebra- Including the city of Culebra 502 AM AST Mon Aug 18 2025 Date Mon 08/18/25 Tue 08/19/25 Wed 08/20/25 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 83 87 89 77 80 83 84 89 93 77 80 83 84 89 93 Temp 84 86 87 85 83 82 81 81 85 88 89 86 83 81 81 81 85 88 89 86 83 Dewpt 78 79 79 79 78 79 78 77 78 78 78 78 77 78 78 78 78 78 78 78 77 RH 82 80 77 82 85 91 91 88 80 72 70 77 82 91 91 91 80 72 70 77 82 Wind dir S S S S S S SE SE SE SE SE SE SE SE SE E E SE E E E Wind spd 23 23 19 17 14 14 14 14 11 11 13 13 12 14 16 17 17 18 18 17 14 Clouds B2 B1 B1 B2 SC SC B1 B1 SC SC SC SC SC SC B1 B1 B1 B1 SC SC SC PoP 12hr 60 30 30 50 50 QPF 12hr 0.57 0.16 0.07 0.16 0.28 Snow 12hr MM MM MM Rain shwrs SC SC SC NM SC IS SC SC IS IS IS IS SC SC SC SC SC SC SC SC IS Tstms IS IS IS Obvis H H H Heat index 96100101 98 92 91 87 89 97101102 98 92 90 87 88 98102102 98 92 Max heat 100 107 107 97 102 109 107 96 104 109 108 Flood A A A A High Surf Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 80 88 80 88 78 88 80 89 Temp 80 85 88 82 80 85 88 82 79 85 88 83 81 85 89 83 Dewpt 76 77 77 76 76 77 78 77 77 77 78 77 77 77 78 77 PWind dir E E NE NE E SE SE E Wind char BZ GN BZ BZ BZ WY BZ BZ Avg clouds SC SC SC B1 B1 B1 B1 B1 B2 B2 B2 B2 B1 B1 B1 B1 PoP 12hr 30 40 40 60 60 60 50 50 Rain shwrs IS SC SC SC SC SC SC NM NM NM NM NM SC SC SC SC Tstms IS IS IS IS IS $$ PRZ013-182000- Vieques- Including the city of Vieques 502 AM AST Mon Aug 18 2025 Date Mon 08/18/25 Tue 08/19/25 Wed 08/20/25 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 83 88 89 76 79 83 84 89 92 76 79 83 84 89 92 Temp 84 87 88 85 82 81 80 80 85 88 89 86 82 81 80 80 85 88 89 86 82 Dewpt 77 77 77 77 76 77 77 76 77 76 76 76 76 76 77 77 77 77 76 76 75 RH 80 72 70 77 82 88 91 88 77 68 66 72 82 85 91 91 77 70 66 72 79 Wind dir S S S S S S SE SE SE SE SE SE SE SE E E E E E E E Wind spd 23 21 19 17 13 14 14 14 11 10 12 13 12 13 14 16 17 17 16 16 14 Clouds B2 B2 B1 B2 B1 B1 B1 B1 SC SC SC SC SC SC B1 B1 B2 B2 SC SC SC PoP 12hr 70 40 30 50 50 QPF 12hr 0.58-0.73 0.17-0.34 0.08 0.18 0.17-0.29 Snow 12hr MM MM MM Rain shwrs SC SC SC NM SC SC SC SC SC SC IS IS SC SC SC SC SC SC SC SC IS Tstms IS IS IS IS Obvis H H H Heat index 95 99 99 96 89 88 83 85 95 99100 96 89 87 83 85 96100100 96 89 Max heat 97 104 104 94 100 105 104 94 100 106 105 Flood A A A A High Surf Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 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 89 79 88 77 88 79 89 Temp 80 85 89 82 79 84 88 81 78 84 88 82 79 85 89 82 Dewpt 75 75 74 75 76 76 75 75 76 76 75 75 76 76 75 76 PWind dir E E NE NE E SE SE E Wind char BZ BZ BZ BZ BZ BZ BZ BZ Avg clouds SC SC SC SC SC B1 B1 B1 B2 B2 B2 B2 B1 B1 B1 B1 PoP 12hr 30 30 40 60 60 60 50 50 Rain shwrs IS SC SC SC SC SC SC NM NM NM NM NM SC SC SC SC Tstms IS IS IS IS IS $$ VIZ001-182000- St.Thomas...St. John...and Adjacent Islands- Including the cities of Anna`s Retreat, Charlotte Amalie, Charlotte Amalie East, Charlotte Amalie West, and Cruz Bay 502 AM AST Mon Aug 18 2025 Date Mon 08/18/25 Tue 08/19/25 Wed 08/20/25 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 83 86 89 72 80 83 84 87 94 72 79 83 84 87 94 Temp 84 86 86 84 82 81 80 80 84 86 87 84 82 81 80 80 84 86 87 84 81 Dewpt 78 78 77 78 77 78 77 77 77 77 76 77 76 78 78 77 77 77 76 77 76 RH 82 77 75 82 85 91 91 91 80 75 70 80 82 91 94 91 80 75 70 80 85 Wind dir SE S S S SE SE SE SE SE SE SE SE SE E E E E E E E E Wind spd 21 21 18 16 13 13 14 13 11 14 14 13 12 17 17 18 17 18 19 16 14 Clouds B1 B2 B2 B1 SC SC SC SC SC SC SC SC SC SC SC SC SC SC FW FW SC PoP 12hr 50 20 30 30 30 QPF 12hr 0.13-0.54 0.04 0.06 0.12 0.09 Snow 12hr MM MM MM Rain shwrs SC SC SC SC IS IS IS IS IS IS IS IS SC SC SC SC SC SC IS IS IS Tstms IS IS IS Obvis H H H H H H H Heat index 94 98 98 95 89 88 85 86 93 97 97 94 89 88 85 85 94 98 97 94 88 Max heat 101 108 109 97 104 109 108 96 104 109 107 Flood A A A A High Surf Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 79 87 79 86 78 87 79 87 Temp 80 84 87 81 79 84 86 81 79 83 87 82 80 84 87 82 Dewpt 76 75 74 75 76 76 76 76 77 76 76 76 77 77 76 76 PWind dir E E NE NE E SE SE E Wind char BZ GN BZ BZ WY WY BZ BZ Avg clouds SC SC SC SC B1 B1 B1 B1 B2 B2 B2 B2 B2 B1 B1 SC PoP 12hr 30 40 50 60 60 60 50 50 Rain shwrs IS SC SC SC SC SC SC NM NM NM NM SC SC SC SC IS Tstms IS IS IS IS IS $$ VIZ002-182000- St Croix- Including the cities of Christiansted, Frederiksted, Frederiksted Southeast, and Grove Place 502 AM AST Mon Aug 18 2025 Date Mon 08/18/25 Tue 08/19/25 Wed 08/20/25 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 83 88 89 77 80 83 84 88 94 77 79 83 84 88 94 Temp 84 87 88 85 82 81 80 81 85 87 88 85 82 81 80 80 85 87 88 85 82 Dewpt 77 78 77 78 77 77 77 77 77 77 77 77 76 78 77 77 77 77 77 77 76 RH 80 75 70 80 85 88 91 88 77 72 70 77 82 91 91 91 77 72 70 77 82 Wind dir SE S S S SE SE SE SE SE SE SE SE E E E E E E E E E Wind spd 19 19 18 13 11 11 12 11 9 14 14 12 10 13 13 16 17 17 18 14 13 Clouds B1 B2 B2 SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC CL CL SC PoP 12hr 50 30 20 30 30 QPF 12hr 0.13 0.04 0.05 0.10 0.09 Snow 12hr MM MM MM Rain shwrs SC SC SC IS SC IS IS IS IS IS IS IS IS IS SC SC SC SC IS Tstms IS IS Obvis H H H H H H H H H Heat index 95100100 97 91 88 85 86 95 99100 96 90 88 85 86 96100100 96 89 Max heat 99 106 104 94 103 112 109 96 102 112 109 Flood A A A A High Surf Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 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 88 79 88 78 88 79 88 Temp 80 85 88 82 79 84 88 81 79 84 88 82 80 85 88 82 Dewpt 75 75 75 75 76 76 76 76 76 76 76 76 77 77 77 76 PWind dir E E NE NE E SE SE E Wind char GN GN GN BZ BZ BZ BZ BZ Avg clouds SC SC SC SC SC B1 B1 B1 B2 B2 B2 B2 B2 B1 B1 SC PoP 12hr 20 30 50 60 60 60 50 40 Rain shwrs IS IS IS SC SC SC SC NM NM NM NM SC SC SC SC IS Tstms IS IS IS IS $$