Headline:
Heat Advisory issued September 20 at 1:32AM AST until September 20 at 3:00PM AST by NWS San Juan PR
Event:
Heat Advisory
Urgency:
Expected
Effective:
September 19, 2026 - 10:32pm
Expires:
September 20, 2026 - 12:00pm
Description:
* WHAT...This level of heat affects most individuals sensitive to
heat, especially those without effective cooling and/or adequate
hydration.
* WHERE...All of Puerto Rico, including Vieques and Culebra, and the
U.S. Virgin Islands.
* WHEN...From 10 AM this morning to 3 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.
Instruction:
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.
Area Description:
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
Forcast Office:
NWS San Juan PR
Sender:
w-nws.webmaster@noaa.gov