Non-Precipitation Warnings / Watches / Advisories
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
672 WWCA72 TJSJ 200623 NPWSJU URGENT - WEATHER MESSAGE National Weather Service San Juan PR 223 AM AST Wed Aug 20 2025 PRZ001>005-007-008-010-011-202100- /O.NEW.TJSJ.XH.W.0004.250820T1300Z-250820T2100Z/ San Juan and Vicinity-Northeast-Southeast-Eastern Interior-North Central-Ponce and Vicinity-Northwest-Mayaguez and Vicinity- Southwest- Including the cities of Dorado, San Juan, Luquillo, Arroyo, Cidra, San Lorenzo, Aguadilla, Catano, Loiza, Manati, Salinas, Rincon, Caguas, Aguas Buenas, Cabo Rojo, Guaynabo, Ceiba, Barceloneta, San German, Toa Alta, Gurabo, Aguada, Arecibo, Toa Baja, Yabucoa, Canovanas, Santa Isabel, Carolina, Bayamon, Las Piedras, Vega Baja, Rio Grande, Comerio, Trujillo Alto, Guanica, Florida, Juncos, Hatillo, Cayey, Maunabo, Guayanilla, Patillas, Quebradillas, Mayaguez, Fajardo, Humacao, Vega Alta, Yauco, Penuelas, Guayama, Ponce, Anasco, Juana Diaz, Isabela, Naguabo, Camuy, Hormigueros, Lajas, and Moca 223 AM AST Wed Aug 20 2025 ...EXTREME HEAT WARNING IN EFFECT FROM 9 AM THIS MORNING TO 5 PM AST THIS AFTERNOON... * WHAT...This level of heat affects anyone without effective cooling and/or adequate hydration. Impacts likely in some health systems, heat-sensitive industries and infrastructure. * WHERE...All coastal and urban areas, as well as the valleys of the eastern interior. * WHEN...From 9 AM this morning to 5 PM AST this afternoon. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. PRECAUTIONARY/PREPAREDNESS ACTIONS... Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. && $$ PRZ012-013-VIZ001-002-202100- /O.NEW.TJSJ.HT.Y.0040.250820T1300Z-250820T2100Z/ Culebra-Vieques-St.Thomas...St. John...and Adjacent Islands-St Croix- Including the cities of Vieques, Christiansted, Frederiksted Southeast, Charlotte Amalie East, Charlotte Amalie West, Grove Place, Cruz Bay, Charlotte Amalie, Culebra, Anna`s Retreat, and Frederiksted 223 AM AST Wed Aug 20 2025 ...HEAT ADVISORY IN EFFECT FROM 9 AM THIS MORNING TO 5 PM AST THIS AFTERNOON... * WHAT...This level of heat affect most individuals sensitive to heat, especially those without effective cooling and/or adequate hydration. Impacts possible in some health system and in heat-sensitive industries. * WHERE...In Puerto Rico, Culebra and Vieques. In Virgin Islands, St Croix and St. Thomas, St. John, and Adjacent Islands. * WHEN...From 9 AM this morning to 5 PM AST this afternoon. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ ERG