National Weather ServicePuerto RicoFlood AdvisoryArchive to October 1, 2026
Flood Advisories in Puerto Rico
The National Weather Service issued 602 flood advisories for Puerto Rico in 2025 and 445 a year on average in 2008-2025; in 2021-2025 it had the 6th most of any state. 2026 through September: 284, 14% below the average of 329 for those months in 2008-2025. San Sebastian was covered most often (1,289 times since 2008).
How many flood advisories does Puerto Rico get?
Every flood advisory that covered part of Puerto Rico. 2026 is an outline: the year is not over.
The numbers
| Year | Count |
|---|---|
| 2026 (through September) | 284 |
| 2025 | 602 |
| 2024 | 617 |
| 2023 | 417 |
| 2022 | 409 |
| 2021 | 410 |
| 2020 | 346 |
| 2019 | 476 |
| 2018 | 466 |
| 2017 | 646 |
| 2016 | 481 |
| 2015 | 277 |
| 2014 | 281 |
| 2013 | 383 |
| 2012 | 444 |
| 2011 | 556 |
| 2010 | 564 |
| 2009 | 404 |
| 2008 | 224 |
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 |
|---|---|---|---|
| San Sebastian | 1,289 | 186 | September 24, 2026 |
| Lares | 1,170 | 164 | September 23, 2026 |
| Utuado | 1,095 | 152 | September 24, 2026 |
| Las Marias | 1,091 | 137 | September 19, 2026 |
| Moca | 1,061 | 170 | September 24, 2026 |
| Anasco | 1,043 | 159 | September 21, 2026 |
| San Juan | 971 | 175 | September 24, 2026 |
| Mayaguez | 936 | 157 | September 21, 2026 |
| Aguada | 902 | 148 | September 21, 2026 |
| Guaynabo | 867 | 155 | September 22, 2026 |
| Bayamon | 863 | 170 | September 16, 2026 |
| Maricao | 781 | 95 | September 15, 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.
What is a flood advisory?
A flood advisory covers flooding that is less serious than a warning, such as water on roads or in low-lying areas, that is still a hazard to drivers and walkers. An advisory is issued for a hazard less serious than a warning that can still cause inconvenience or danger if people are not careful. The national record · Every warning type in Puerto Rico.