Flash Flood in Bayamón Municipio, Puerto Rico

Flash Flood in Bayamón Municipio, Puerto Rico: 46 recorded events between 1997 and 2025. The strongest on record measured 0. That places the county #681 nationally and #14 statewide for this hazard.

Reporting practice changed over time — early decades are undercounted, not calmer.

The busiest decade for flash flood in Bayamón Municipio is the 2020s, when 35 of the county's 46 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 Bayamón Municipio archive, flash flood makes up 39.3% of all recorded severe weather across 9 hazard types. Nationally the county sits at #681 for this hazard and #14 within Puerto Rico, putting it in the 77.6 percentile of all U.S. counties.

May is the peak month for flash flood in Bayamón Municipio with 8 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.

How many flash flood events are on record in Bayamón Municipio, Puerto Rico?

46 flash flood events are recorded in Bayamón Municipio between 1997 and 2025, causing 0 direct deaths.

What is the strongest flash flood recorded in Bayamón Municipio?

The strongest flash flood on record in Bayamón Municipio measured 0.

Where does the flash flood data for Bayamón 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.