WWCA72 TJSJ 191450

NPWSJU



URGENT - WEATHER MESSAGE

National Weather Service San Juan PR

1050 AM AST Tue Aug 19 2025



PRZ001>005-007-008-010-011-192100-

/O.CON.TJSJ.XH.W.0003.000000T0000Z-250819T2100Z/

San Juan and Vicinity-Northeast-Southeast-Eastern Interior-North

Central-Ponce and Vicinity-Northwest-Mayaguez and Vicinity-

Southwest-

Including the cities of Salinas, Cayey, Bayamon, Penuelas, San

Lorenzo, Carolina, Mayaguez, Cidra, Ceiba, San Juan,

Quebradillas, San German, Gurabo, Toa Baja, Luquillo, Maunabo,

Hatillo, Comerio, Rincon, Guaynabo, Catano, Santa Isabel, Caguas,

Toa Alta, Patillas, Guayanilla, Aguas Buenas, Yabucoa, Dorado,

Moca, Florida, Guanica, Lajas, Juana Diaz, Las Piedras, Cabo

Rojo, Loiza, Trujillo Alto, Manati, Aguada, Hormigueros, Fajardo,

Ponce, Aguadilla, Arecibo, Barceloneta, Guayama, Canovanas, Rio

Grande, Juncos, Yauco, Naguabo, Anasco, Camuy, Humacao, Isabela,

Arroyo, Vega Baja, and Vega Alta

1050 AM AST Tue Aug 19 2025



...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 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 of Puerto Rico, as well as the 

  valleys of the eastern interior.



* WHEN...Until 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-VIZ001-002-192100-

/O.CON.TJSJ.HT.Y.0039.000000T0000Z-250819T2100Z/

Culebra-Vieques-St.Thomas...St. John...and Adjacent Islands-St

Croix-

Including the cities of Vieques, Charlotte Amalie West,

Frederiksted, Culebra, Cruz Bay, Charlotte Amalie, Frederiksted

Southeast, Charlotte Amalie East, Grove Place, Anna's Retreat,

and Christiansted

1050 AM AST Tue Aug 19 2025



...HEAT ADVISORY REMAINS IN EFFECT UNTIL 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 Counties. In Virgin 

  Islands, St Croix and St. Thomas, St. John, and Adjacent Islands 

  Counties.



* WHEN...Until 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.



&&



$$



DSR