National Weather ServicePuerto RicoRed Flag WarningArchive to October 1, 2026
Red Flag Warnings in Puerto Rico
The National Weather Service issued 1 red flag warnings for Puerto Rico in 2025 and 4 a year on average in 2008-2025; in 2021-2025 it had the 43rd most of any state. 2026 through September: 5, 32% above the average of 4 for those months in 2008-2025. Southeast Coastal Plains was covered most often (40 times since 2008).
How many red flag warnings does Puerto Rico get?
Every red flag warning that covered part of Puerto Rico. 2026 is an outline: the year is not over.
The numbers
| Year | Count |
|---|---|
| 2026 (through September) | 5 |
| 2025 | 1 |
| 2024 | 0 |
| 2023 | 4 |
| 2022 | 6 |
| 2021 | 8 |
| 2020 | 4 |
| 2019 | 11 |
| 2018 | 4 |
| 2017 | 0 |
| 2016 | 0 |
| 2015 | 17 |
| 2014 | 15 |
| 2013 | 0 |
| 2012 | 0 |
| 2011 | 0 |
| 2010 | 0 |
| 2009 | 0 |
| 2008 | 0 |
Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 1, 2026.
When in the year does Puerto Rico get them?
Sum of 2008-2025; the busiest month is labelled.
Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 1, 2026.
Where in Puerto Rico?
| County or forecast zone | Since 2008 | Since 2023 | Last issued |
|---|---|---|---|
| Southeast Coastal Plains | 40 | 9 | August 15, 2026 |
| Southwest Coastal Plains and Mona Island | 33 | 10 | August 15, 2026 |
| South Coastal Plain and Mona Island | 32 | 0 | September 9, 2015 |
| Vieques | 11 | 3 | August 15, 2026 |
| Southern Hills | 8 | 5 | August 15, 2026 |
| West Coast | 6 | 5 | July 11, 2026 |
The NWS issues these products for counties or forecast zones; a zone can be part of a county or a mountain range.
Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 1, 2026.
The latest red flag warnings for Puerto Rico in AreaZine's record
NWS San JuanWarningAugust 15, 2026
Red Flag Warning: Southeast Coastal Plains, Southern Hills, Vieques and 1 more, PR
Expired 5:00 p.m. EDT, August 15, 2026
NWS San JuanWarningJuly 11, 2026
Red Flag Warning: Southeast Coastal Plains, Southern Hills, West Coast and 1 more, PR
Expired 5:00 p.m. EDT, July 11, 2026
NWS San JuanWarningJune 19, 2026
Red Flag Warning: Southeast Coastal Plains, Southern Hills, West Coast and 3 more, PR and VI
Expired 4:00 p.m. EDT, June 19, 2026
NWS San JuanWarningJune 14, 2026
Red Flag Warning: Southeast Coastal Plains, Southern Hills, West Coast and 3 more, PR and VI
Expired 4:00 p.m. EDT, June 14, 2026
This list is AreaZine's record of the NWS alert feed, kept since April 6, 2026; the counts above come from the complete IEM archive.
Source: National Weather Service alerts (api.weather.gov).
What is a red flag warning?
A red flag warning means critical fire weather is happening or about to happen: strong wind, very low humidity and dry fuels together, so a fire that starts can spread fast. Each office sets the criteria with its land-management partners. A warning means the hazard is happening, about to happen, or very likely: act now to protect people and property. The national record · Every warning type in Puerto Rico.