87
Recorded events
0
Direct deaths
0
Direct injuries
$761.3M
Property damage
Flash Flood in Adjuntas Municipio, Puerto Rico: 87 recorded events between 1997 and 2025. The strongest on record measured 0. That places the county #229 nationally and #3 statewide for this hazard.
Decade by decade
Flash Flood in Adjuntas Municipio, Puerto Rico: events per decade
Reporting practice changed over time — early decades are undercounted, not calmer.
The busiest decade for flash flood in Adjuntas Municipio is the 2000s, when 71 of the county's 87 recorded events were logged. Comparing decades is useful for spotting active periods, but the earliest years are thin because systematic reporting for this hazard began later.
Within the Adjuntas Municipio archive, flash flood makes up 28.9% of all recorded severe weather across 10 hazard types. Nationally the county sits at #229 for this hazard and #3 within Puerto Rico, putting it in the 92.5 percentile of all U.S. counties.
Seasonality
Events by month
Oct is the peak month for flash flood in Adjuntas Municipio with 17 recorded events, while Mar is the quietest. Seasonality here is a property of the archive as much as the climate: reports cluster where population and spotter networks are densest.
Most recent
Latest recorded events
| Date | Location | Magnitude | Damage |
|---|---|---|---|
| May 2, 2025 | ADJUNTAS | 0 | $5K |
| May 1, 2025 | ADJUNTAS | 0 | $5K |
| Sep 10, 2024 | ADJUNTAS | 0 | $1K |
| Jul 29, 2024 | SALINAS | 0 | $1K |
| Jul 29, 2024 | SALINAS | 0 | $1K |
| May 7, 2024 | ADJUNTAS | 0 | $5K |
| May 6, 2024 | ADJUNTAS | 0 | $1K |
| Sep 19, 2022 | CABO ROJO | 0 | $15K |
| Sep 18, 2022 | VIEQUES | 0 | $4K |
| Feb 1, 2022 | TOA ALTA | 0 | $0 |
Other hazards here
More from Adjuntas Municipio
- Heavy Rain 142
From the record
What the reports say
Written by National Weather Service staff at the time of the event · public domain
An area of nearly stationary showers and thunderstorms affected the western part of the San juan metro area mainly between northern Bayamon, southwest Catano, and Toa Baja. Flooding was reported in Villa Marisol, and El Sector 26 of Sabana Seca. More than 40 houses were reported flooded. Significant flooding of roads around Sabana Seca was reported. Road 5 from Catano to Bayamon was reported flooded.
Many sectors of Trujillo Alto were reported flooded as three small streams went out of their banks . Quebrada La Leprosa, La Cepero, and Blasina. Fourteen families were affected by flood waters at Sector Hoyo 2, road 845.
Urban and flash flooding was reported in the San Juan area. Kennedy Avenue, De Diego Avenue and Las Americas Expressway were reported flooded. River Puerto Nuevo was reported out of its banks, several houses were flooded and people were evacuated. In the area of College Park and Reparto Metropolitan a nearby creek was reported out of its banks and flooding some houses. In Bayamon some roads were impassable and houses were flooded at road 174 in Barrio Minillas. In Guaynabo, a creek was running through Villa Isleña. In Barrio Santa Rosa, road 837, several houses were flooded.
Quick answers
Frequently asked
How many flash flood events are on record in Adjuntas Municipio, Puerto Rico?
87 flash flood events are recorded in Adjuntas Municipio between 1997 and 2025, causing 0 direct deaths.
What is the strongest flash flood recorded in Adjuntas Municipio?
The strongest flash flood on record in Adjuntas Municipio measured 0.
Where does the flash flood data for Adjuntas Municipio come from?
All events come from the NOAA/NCEI Storm Events Database, the federal public-domain archive of severe weather reports. Dates are UTC, damage is as reported and not inflation-adjusted, and the most recent entries may still be revised.
Cite this page
“Flash Flood in Adjuntas Municipio, Puerto Rico.” Severe Weather History. severeweatherhistory.com/county/puerto-rico/adjuntas-municipio/flash-flood/ · Data: NOAA/NCEI, FEMA, U.S. Census — public domain.