172
WWCA72 TJSJ 290743
NPWSJU

URGENT - WEATHER MESSAGE
National Weather Service San Juan PR
343 AM AST Fri Aug 29 2025

PRZ001>005-007-008-010-011-292100-
/O.NEW.TJSJ.XH.W.0007.250829T1400Z-250829T2100Z/
San Juan and Vicinity-Northeast-Southeast-Eastern Interior-North
Central-Ponce and Vicinity-Northwest-Mayaguez and Vicinity-
Southwest-
Including the cities of Arroyo, Anasco, Cidra, Barceloneta, Rio
Grande, Gurabo, Cabo Rojo, Hormigueros, Dorado, Mayaguez, Ceiba,
Aguada, Carolina, Aguas Buenas, Guaynabo, Maunabo, Yabucoa, San
Juan, Juana Diaz, Vega Alta, Vega Baja, Toa Baja, Cayey,
Guayanilla, San Lorenzo, Rincon, Manati, Lajas, Toa Alta,
Isabela, Trujillo Alto, Las Piedras, Juncos, Penuelas, San
German, Humacao, Ponce, Bayamon, Florida, Canovanas, Yauco,
Camuy, Catano, Salinas, Naguabo, Guayama, Luquillo, Hatillo,
Arecibo, Loiza, Comerio, Moca, Santa Isabel, Caguas,
Quebradillas, Fajardo, Aguadilla, Patillas, and Guanica
343 AM AST Fri Aug 29 2025

...EXTREME HEAT WARNING IN EFFECT FROM 10 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 of Puerto Rico, as well as the
  valleys of the eastern interior.

* WHEN...From 10 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...

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.

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.

Stay cool, stay hydrated, stay informed.

Monitor the latest forecasts and warnings for updates.

&&

$$

PRZ012-013-VIZ001-002-292100-
/O.NEW.TJSJ.HT.Y.0049.250829T1400Z-250829T2100Z/
Culebra-Vieques-St.Thomas...St. John...and Adjacent Islands-St
Croix-
Including the cities of Charlotte Amalie East, Charlotte Amalie,
Charlotte Amalie West, Frederiksted Southeast, Culebra, Cruz Bay,
Grove Place, Anna`s Retreat, Vieques, Christiansted, and
Frederiksted
343 AM AST Fri Aug 29 2025

...HEAT ADVISORY IN EFFECT FROM 10 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...St. Thomas, St. John, St. Croix, Vieques and Culebra.

* WHEN...From 10 AM this morning to 5 PM AST this afternoon.

* IMPACTS...Hot temperatures and high humidity may cause heat
  illnesses.

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.

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.

Monitor the latest forecasts and warnings for updates.

&&

$$

MRR