KinwarnPuerto Rico tornado warnings
The National Weather Service issued 0 tornado warnings, 15 severe thunderstorm warnings and 682 flash flood warnings for Puerto Rico from 2016 to 2025, about 0, 1.5 and 68 a year.
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Puerto Rico municipios ranked by tornado warnings
Warnings that listed each municipio, 2016 to 2025, and tornadoes recorded in the municipio since 1950. A warning can list several municipios, so the municipio numbers add up to more than the state total.
| Municipio | Tornado warnings | Severe thunderstorm | Flash flood | Tornadoes since 1950 |
|---|---|---|---|---|
| Vega Baja Municipio | 0 | 6 | 33 | 0 |
| Vega Alta Municipio | 0 | 5 | 34 | 0 |
| Arroyo Municipio | 0 | 4 | 30 | 0 |
| Corozal Municipio | 0 | 4 | 32 | 0 |
| Guayama Municipio | 0 | 4 | 31 | 0 |
| Patillas Municipio | 0 | 4 | 48 | 0 |
| Cayey Municipio | 0 | 3 | 36 | 0 |
| Dorado Municipio | 0 | 3 | 32 | 0 |
| Humacao Municipio | 0 | 3 | 50 | 1 |
| Las Piedras Municipio | 0 | 3 | 47 | 1 |
| Manati Municipio | 0 | 3 | 24 | 1 |
| Maunabo Municipio | 0 | 3 | 41 | 0 |
| Morovis Municipio | 0 | 3 | 28 | 0 |
| San Lorenzo Municipio | 0 | 3 | 46 | 0 |
| Toa Alta Municipio | 0 | 3 | 35 | 0 |
| Toa Baja Municipio | 0 | 3 | 44 | 0 |
| Yabucoa Municipio | 0 | 3 | 50 | 0 |
| Aguas Buenas Municipio | 0 | 2 | 25 | 0 |
| Arecibo Municipio | 0 | 2 | 27 | 2 |
| Bayamon Municipio | 0 | 2 | 65 | 1 |
| Catano Municipio | 0 | 2 | 46 | 0 |
| Ciales Municipio | 0 | 2 | 27 | 0 |
| Fajardo Municipio | 0 | 2 | 54 | 0 |
| Guaynabo Municipio | 0 | 2 | 76 | 1 |
| Juncos Municipio | 0 | 2 | 44 | 0 |
| Luquillo Municipio | 0 | 2 | 51 | 0 |
| Naguabo Municipio | 0 | 2 | 71 | 0 |
| Naranjito Municipio | 0 | 2 | 35 | 0 |
| Salinas Municipio | 0 | 2 | 23 | 0 |
| San Juan Municipio | 0 | 2 | 99 | 1 |
| Aguada Municipio | 0 | 1 | 15 | 2 |
| Anasco Municipio | 0 | 1 | 13 | 4 |
| Barceloneta Municipio | 0 | 1 | 19 | 0 |
| Barranquitas Municipio | 0 | 1 | 33 | 0 |
| Caguas Municipio | 0 | 1 | 42 | 0 |
| Canovanas Municipio | 0 | 1 | 40 | 0 |
| Carolina Municipio | 0 | 1 | 58 | 0 |
| Ceiba Municipio | 0 | 1 | 51 | 1 |
| Cidra Municipio | 0 | 1 | 30 | 0 |
| Comerio Municipio | 0 | 1 | 35 | 0 |
| Culebra Municipio | 0 | 1 | 7 | 0 |
| Florida Municipio | 0 | 1 | 16 | 0 |
| Gurabo Municipio | 0 | 1 | 37 | 0 |
| Las Marias Municipio | 0 | 1 | 8 | 0 |
| Loiza Municipio | 0 | 1 | 33 | 0 |
| Moca Municipio | 0 | 1 | 19 | 1 |
| Rio Grande Municipio | 0 | 1 | 52 | 0 |
| San Sebastian Municipio | 0 | 1 | 28 | 0 |
| Utuado Municipio | 0 | 1 | 46 | 0 |
| Adjuntas Municipio | 0 | 0 | 33 | 0 |
| Aguadilla Municipio | 0 | 0 | 17 | 2 |
| Aibonito Municipio | 0 | 0 | 31 | 1 |
| Cabo Rojo Municipio | 0 | 0 | 19 | 0 |
| Camuy Municipio | 0 | 0 | 18 | 0 |
| Coamo Municipio | 0 | 0 | 29 | 0 |
| Guanica Municipio | 0 | 0 | 15 | 0 |
| Guayanilla Municipio | 0 | 0 | 17 | 0 |
| Hatillo Municipio | 0 | 0 | 23 | 0 |
| Hormigueros Municipio | 0 | 0 | 15 | 0 |
| Isabela Municipio | 0 | 0 | 33 | 0 |
| Jayuya Municipio | 0 | 0 | 27 | 0 |
| Juana Diaz Municipio | 0 | 0 | 26 | 0 |
| Lajas Municipio | 0 | 0 | 14 | 1 |
| Lares Municipio | 0 | 0 | 25 | 1 |
| Maricao Municipio | 0 | 0 | 11 | 0 |
| Mayaguez Municipio | 0 | 0 | 16 | 2 |
| Orocovis Municipio | 0 | 0 | 38 | 0 |
| Penuelas Municipio | 0 | 0 | 19 | 0 |
| Ponce Municipio | 0 | 0 | 34 | 0 |
| Quebradillas Municipio | 0 | 0 | 33 | 0 |
| Rincon Municipio | 0 | 0 | 8 | 0 |
| Sabana Grande Municipio | 0 | 0 | 18 | 0 |
| San German Municipio | 0 | 0 | 20 | 0 |
| Santa Isabel Municipio | 0 | 0 | 22 | 0 |
| Trujillo Alto Municipio | 0 | 0 | 51 | 1 |
| Vieques Municipio | 0 | 0 | 9 | 0 |
| Villalba Municipio | 0 | 0 | 27 | 0 |
| Yauco Municipio | 0 | 0 | 24 | 0 |
Puerto Rico warnings by year
Each warning counts once for the state, however many municipios it covered. 2008 is the first full year the National Weather Service drew an outline around every warning.
Tornadoes since 1950
33 tornadoes have been recorded in Puerto Rico since 1950. August had the most (6).
| Year | Tornado | Severe thunderstorm | Flash flood |
|---|---|---|---|
| 2026 to Oct 19 | 0 | 0 | 32 |
| 2025 | 0 | 3 | 87 |
| 2024 | 0 | 2 | 120 |
| 2023 | 0 | 0 | 65 |
| 2022 | 0 | 1 | 87 |
| 2021 | 0 | 3 | 18 |
| 2020 | 0 | 4 | 51 |
| 2019 | 0 | 0 | 32 |
| 2018 | 0 | 1 | 20 |
| 2017 | 0 | 1 | 166 |
| 2016 | 0 | 0 | 36 |
| 2015 | 0 | 1 | 12 |
| 2014 | 2 | 2 | 25 |
| 2013 | 0 | 0 | 38 |
| 2012 | 0 | 3 | 42 |
| 2011 | 2 | 16 | 152 |
| 2010 | 1 | 6 | 125 |
| 2009 | 0 | 5 | 73 |
| 2008 | 0 | 2 | 75 |
What stands out in Puerto Rico
2014 was the busiest year for tornado warnings in Puerto Rico since 2008, with 2 tornado warnings. The busiest year for flash flood warnings was 2017, with 166.
Since 2008, 21 flash flood warnings for Puerto Rico were raised to a flash flood emergency for at least part of the warned area: the Weather Service’s rarest warning, used when a severe threat to life is happening or about to happen.
None of Puerto Rico’s severe thunderstorm warnings carried the “destructive” tag (winds of 80 mph or more, or hail 2.75 inches or larger) since it started in August 2021, so none of them set off Wireless Emergency Alerts on phones.
5 tornadoes in Puerto Rico since 1950 were rated F1 or EF1, the strongest recorded there. The most recent was on July 16, 2023.
National Weather Service warnings from the Iowa Environmental Mesonet archive through October 19, 2026; tornado ratings from the Storm Prediction Center and NOAA Storm Events.
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Puerto Rico tornado warnings: questions people ask
How many tornado warnings does Puerto Rico get a year?
None from 2016 to 2025. The National Weather Service issued no tornado warnings for Puerto Rico in those ten years.
When is tornado season in Puerto Rico?
August and June: 33% of the 33 tornadoes recorded in Puerto Rico since 1950 came in those two months.
About these numbers
Counts are National Weather Service warnings that listed a Puerto Rico municipio, through October 19, 2026. How Kinwarn counts · Puerto Rico data (CSV)
Cite: Kinwarn. “Puerto Rico tornado warnings.” kinwarn.com/puerto-rico. National Weather Service data through October 19, 2026.
Sources: IEM warning archive · NWS 2007 outlines · SPC tornado database · Census places · Census population estimates · NWS tornado alerts