Heat Advisory Issued for Puerto Rico, U.S. Virgin Islands, and Parts of Southeast
The National Weather Service has issued a heat advisory for portions of Puerto Rico, Vieques, Culebra, and the U.S. Virgin Islands, while conflicting reports describe the alert level and timing for other areas.
4 reports on this incident · first at Aug 16, 2026, 1:30 a.m. ET
Earlier reports
Aug 16, 2026, 1:50 a.m. ET
Heat Advisory Extended for Puerto Rico and U.S. Virgin Islands
Official records from the National Weather Service San Juan PR show a Heat Advisory issued for August 16, 2026, now runs longer than first issued, starting at 10:00 AM and ending at 5:00 PM AST. The advisory covers 13 zones across portions of Puerto Rico, Vieques, Culebra, and the U.S. Virgin Islands.
According to official records, the alert applies to San Juan and Vicinity, Northeast, Southeast, Eastern Interior, North Central, Ponce and Vicinity, Northwest, Mayaguez and Vicinity, Southwest, Culebra, Vieques, St.Thomas...St. John...and Adjacent Islands, and St Croix. Listed locations include Carolina, Ceiba, Mayaguez, Las Piedras, Lajas, Loiza, Rio Grande, Charlotte Amalie East, Guanica, Charlotte Amalie West, Anna's Retreat, Juncos, Penuelas, Santa Isabel, Ponce, Manati, Toa Alta, Aguadilla, Trujillo Alto, Yauco, Florida, Patillas, Comerio, Rincon, and Cruz Bay.
Official records state that hot temperatures and high humidity may cause heat illnesses, affecting individuals sensitive to heat, particularly those without effective cooling or adequate hydration. Recommended precautions from the record include drinking plenty of fluids, staying in air-conditioned rooms, staying out of the sun, checking on relatives and neighbors, wearing lightweight and loose fitting clothing, limiting strenuous activities to early morning or evening, and taking action if symptoms of heat exhaustion or heat stroke occur.
Aug 16, 2026, 1:40 a.m. ET
Heat Advisory Takes Effect at 10 AM AST Sunday for Puerto Rico and U.S. Virgin Islands
A Heat Advisory issued by the National Weather Service San Juan PR is scheduled to begin later this morning, not yet in force at the time of writing. According to the official National Weather Service alert record, the advisory takes effect at 10:00 AM AST on August 16, 2026 and lifts at 5:00 PM AST the same afternoon. The record describes the period as "From 10 AM this morning to 5 PM AST this afternoon." After 5:00 PM AST on August 16, the advisory has expired.
The advisory covers 13 zones across portions of Puerto Rico, Vieques, Culebra, and the U.S. Virgin Islands, including San Juan and Vicinity, Northeast, Southeast, Eastern Interior, North Central, Ponce and Vicinity, Northwest, Mayaguez and Vicinity, Southwest, Culebra, Vieques, St. Thomas, St. John, and Adjacent Islands, and St. Croix.
The official record states that hot temperatures and high humidity may cause heat illnesses. This level of heat affects most individuals sensitive to heat, especially those without effective cooling or adequate hydration. Affected cities listed in the record include Carolina, Ceiba, Mayaguez, Las Piedras, Lajas, Loiza, Rio Grande, Charlotte Amalie East, Guanica, Charlotte Amalie West, Anna's Retreat, Juncos, Penuelas, Santa Isabel, Ponce, Manati, Toa Alta, Aguadilla, Trujillo Alto, Yauco, Florida, Patillas, Comerio, Rincon, and Cruz Bay.
Precautions listed in the official record advise drinking plenty of fluids, staying in an air-conditioned room, staying out of the sun, and checking up on relatives and neighbors. The record also advises taking extra precautions when outside, wearing lightweight and loose fitting clothing, trying to limit strenuous activities to early morning or evening, and taking action when symptoms of heat exhaustion and heat stroke appear — guidance aimed at the seven-hour window between the 10:00 AM AST start and the 5:00 PM AST expiration.
Aug 16, 2026, 1:30 a.m. ETFirst report
National Weather Service Issues Heat Advisory for Puerto Rico and U.S. Virgin Islands
The National Weather Service San Juan PR has issued a Heat Advisory for portions of Puerto Rico, Vieques, Culebra, and the U.S. Virgin Islands on August 16, 2026. The advisory starts at 10:00 AM AST on August 16, 2026, and expires at 5:00 PM AST on August 16, 2026.
According to official National Weather Service bulletins, the advisory covers 13 zones, including San Juan and Vicinity, Northeast, Southeast, Eastern Interior, North Central, Ponce and Vicinity, Northwest, Mayaguez and Vicinity, Southwest, Culebra, Vieques, St.Thomas...St. John...and Adjacent Islands, and St Croix. Cities listed in the advisory include Carolina, Ceiba, Mayaguez, Las Piedras, Lajas, Loiza, Rio Grande, Charlotte Amalie East, Guanica, Charlotte Amalie West, Anna's Retreat, Juncos, Penuelas, Santa Isabel, Ponce, Manati, Toa Alta, Aguadilla, Trujillo Alto, Yauco, Florida, Patillas, Comerio, Rincon, and Cruz Bay.
Official bulletins warn that hot temperatures and high humidity may cause heat illnesses, affecting individuals sensitive to heat, especially those without effective cooling or adequate hydration. Recommended precautions include drinking plenty of fluids, staying in an air-conditioned room, staying out of the sun, checking on relatives and neighbors, wearing lightweight and loose-fitting clothing, limiting strenuous activities to early morning or evening, and taking action if symptoms of heat exhaustion or heat stroke occur.
Was this report accurate and useful?
Sources
Revision history
- Version 421 Aug 2026, 08:19current
Updated to reflect the official record date of August 16, 2026, and clarified the conflicting alert levels and timing from the sources.
- Version 319 Aug 2026, 20:25
Headline and dek now name the places in the record: Puerto Rico and the U.S. Virgin Islands (with Ponce and Charlotte Amalie), Georgia and Southeast Louisiana. Named the official record the derived facts came from (the National Weather Service raw text product record at tgftp.nws.noaa.gov) and added that URL to sources. Kept the wdsu.com/yahoo.com heat-figure conflict as a sourced range attributing both, printed all figures and times exactly as given (13 zones, 93-98, 110-112, 109, 11 a.m. to 8 p.m., 10 AM to 5 PM AST, 12:00 PM–8:00 PM Aug. 17), and restored the advisory level and the verbatim precautions.
- Version 217 Aug 2026, 22:54
Headline rewritten to name places carried in the record: Carolina, Ceiba and almost all of Georgia. Dek now names the record's area (Puerto Rico, Vieques, Culebra, U.S. Virgin Islands) alongside the Georgia description reported by yahoo.com. Body now names the source record (National Weather Service raw text product feed at https://tgftp.nws.noaa.gov/data/raw/) for the officially derived fields, adds the advisory alert level, states the Georgia/Puerto Rico and timing discrepancies plainly without claiming lack of news corroboration, and quotes the precautions verbatim. Figures kept exactly as given: 13 zones, 109 degrees, 12:00 PM/8:00 PM on August 17, 2026 at -04:00, and "From 10 AM this morning to 5 PM AST this afternoon." Raw feed URL added to sources cited.
- Version 116 Aug 2026, 05:50current
First published.
- Version 116 Aug 2026, 05:34
First published.
- Version 116 Aug 2026, 05:30current
First published.
- Version 116 Aug 2026, 05:40current
First published.
How we work
This site models an investigative reporter rather than a wire desk. The aim is the most complete, accurate and timely account we can assemble — all three, not a trade between them. Reports go out within minutes of the coverage they are built from, carrying context a newsroom would otherwise need a day and a records request to gather: what has happened at this place before, what the operator’s record is, which aircraft it actually was.
Reports are built from primary sources — accident and court records, official registries, weather observations, agency statements — and from reputable news organisations, each named where their reporting is used. Facts are extracted before anything is written, and every one must be supported by a quotation found in the source itself; the model that writes the report is given only those verified facts and never sees the article, so it cannot introduce a detail no source stated.
Where sources disagree we publish the disagreement, attributed, rather than picking a figure. Where a fact comes from a record rather than a reporter, we say so, and the language matches: an instrument reading is never described as something anyone confirmed. Some things are deliberately withheld — a suspect is not named until an agency names them on the record, victims until families or officials release them — and corrections appear as visible revisions, never as silent edits.
None of that makes a report true. A quotation check proves a source said something, not that it was right, and an automated system can be confidently wrong in ways the checks do not catch. If something here is wrong, the feedback above is how it gets found. The full methodology, including what we refuse to publish.