One product issued by NWS for: Guanica PR
Extreme Heat Warning
URGENT - WEATHER MESSAGE National Weather Service San Juan PR 211 AM AST Fri Sep 11 2026 PRZ001>011-112100- /O.NEW.TJSJ.XH.W.0008.260911T1400Z-260911T2100Z/ San Juan and Vicinity-Northeast-Southeast-Eastern Interior-North Central-Central Interior-Ponce and Vicinity-Northwest-Western Interior-Mayaguez and Vicinity-Southwest- Including the cities of Las Marias, Rincon, Hormigueros, Arroyo, Utuado, Aibonito, Caguas, Maunabo, Morovis, Cidra, Maricao, Rio Grande, Gurabo, Coamo, Humacao, Loiza, Luquillo, Naranjito, Las Piedras, Comerio, Isabela, Fajardo, San Sebastian, Salinas, Aguas Buenas, Villalba, San German, Lajas, Santa Isabel, Toa Alta, Trujillo Alto, Camuy, Juncos, Dorado, Adjuntas, Sabana Grande, Arecibo, Carolina, Lares, Bayamon, Quebradillas, Naguabo, Hatillo, Patillas, Mayaguez, Cabo Rojo, Canovanas, Toa Baja, Yabucoa, Barceloneta, Aguadilla, Yauco, Guanica, Ceiba, Barranquitas, Vega Baja, Penuelas, Aguada, Juana Diaz, San Juan, San Lorenzo, Catano, Manati, Jayuya, Corozal, Guayanilla, Florida, Ponce, Vega Alta, Guayama, Orocovis, Moca, Ciales, Guaynabo, Anasco, and Cayey 211 AM AST Fri Sep 11 2026 ...EXTREME HEAT WARNING IN EFFECT FROM 10 AM THIS MORNING TO 5 PM AST THIS AFTERNOON... * WHAT...This level of heat can affect anyone without effective cooling and/or adequate hydration. * WHERE...Portions of Puerto Rico, particularly across coastal and urban areas and lower-elevation valleys. * WHEN...From 10 AM this morning to 5 PM AST this afternoon. * IMPACTS...Heat-related illnesses increase significantly during periods of very high heat indices or high temperatures. This extreme heat event poses a severe threat to anyone with inadequate cooling or hydration. These extreme impacts will be most pronounced across coastal sections, lowlands, interior valleys, and urban areas. * ADDITIONAL DETAILS...High concentrations of Saharan Dust will also be present today, resulting in hazy skies, reduced visibilities and deteriorated air quality. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. 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. && $$