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Heat Advisory — San Juan and Vicinity, PR, Northeast, PR, Southeast, PR, Eastern Interior, PR, North Central, PR, Central Interior, PR, Ponce and Vicinity, PR, Northwest, PR, Western Interior, PR, Mayaguez and Vicinity, PR, Southwest, PR, Culebra, PR, Vieques, PR, St.Thomas...St. John.. and Adjacent Islands, VI, St Croix, VI
Issued
8:00 AM CDT · sam., sept. 26 2026
Expires
3:00 PM CDT · sam., sept. 26 2026
Issuing Office
NWS TJSJ

Affected Areas

San Juan and Vicinity, PR Northeast, PR Southeast, PR Eastern Interior, PR North Central, PR Central Interior, PR Ponce and Vicinity, PR Northwest, PR Western Interior, PR Mayaguez and Vicinity, PR Southwest, PR Culebra, PR Vieques, PR St.Thomas...St. John.. and Adjacent Islands, VI St Croix, VI

Official Bulletin

694
WWCA72 TJSJ 260552
NPWSJU

URGENT - WEATHER MESSAGE
National Weather Service San Juan PR
152 AM AST Sat Sep 26 2026

PRZ001>013-VIZ001-002-261400-
/O.NEW.TJSJ.HT.Y.0064.260926T1300Z-260926T2000Z/
San Juan and Vicinity-Northeast-Southeast-Eastern Interior-North
Central-Central Interior-Ponce and Vicinity-Northwest-Western
Interior-Mayaguez and Vicinity-Southwest-Culebra-Vieques-
St.Thomas...St. John...and Adjacent Islands-St Croix-
Including the cities of Las Piedras, Loiza, Penuelas, Juana Diaz,
Luquillo, Naranjito, Utuado, San German, Vega Baja, Mayaguez, Aguas
Buenas, Coamo, Canovanas, Trujillo Alto, Charlotte Amalie, Charlotte
Amalie East, Florida, Hatillo, Arroyo, Isabela, Dorado, Lajas,
Culebra, Moca, Toa Alta, Toa Baja, Frederiksted, Ceiba, Caguas,
Vieques, Sabana Grande, Guaynabo, Barranquitas, Aguada, Manati,
Frederiksted Southeast, Rio Grande, Guanica, Barceloneta, Charlotte
Amalie West, Corozal, Anasco, Orocovis, Villalba, Gurabo, Arecibo,
San Lorenzo, Cabo Rojo, Lares, Salinas, Morovis, Bayamon, Maricao,
San Juan, Guayama, Catano, Cruz Bay, Ciales,
Anna's Retreat, Cayey, Grove Place, Las Marias, Aguadilla,
Quebradillas, Cidra, San Sebastian, Hormigueros, Comerio, Yabucoa,
Juncos, Carolina, Yauco, Christiansted, Jayuya, Patillas, Aibonito,
Guayanilla, Humacao, Maunabo, Adjuntas, Naguabo, Ponce, Rincon,
Camuy, Vega Alta, Santa Isabel, and Fajardo
152 AM AST Sat Sep 26 2026

...HEAT ADVISORY IN EFFECT FROM 9 AM THIS MORNING TO 4 PM AST THIS
AFTERNOON...

* WHAT...This level of heat affects most individuals sensitive to
  heat, especially those without effective cooling and/or adequate
  hydration.

* WHERE...Portions of Puerto Rico and Virgin Islands.

* WHEN...From 9 AM this morning to 4 PM AST this afternoon.

* IMPACTS...High temperatures or elevated heat indices can worsen
  symptoms in people with chronic conditions. They can also increase
  the risk of heat-related illness among individuals sensitive to
  heat with inadequate cooling or hydration. These risks are highest
  across coastal areas, lowlands, interior valleys, and urban zones.

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.

&&

$$

MMC