Flood — Bayamon, Puerto Rico

2025-07-20 · near Bayamon, Bayamon, Puerto Rico

Event narrative

Bayamn emergency managers reported that Calle 8 (8th Street) in Santa Rosa is flooded due to heavy rains and poor drainage. No vehicles or homes were affected, only the water on the roadway. This road is over a tributary to Rio Hondo (River).

Wider weather episode

Lingering moisture and marginal instability associated with a nearby upper-level low to the northwest, combined with breezy east-southeast low-level winds, led to isolated to scattered showers over eastern Puerto Rico early in the morning. As the day progressed, showers and cloudiness spread across much of Puerto Rico, with more frequent and intense showers and isolated thunderstorms developing over the San Juan metropolitan area (particularly over Bayamon, Catano and Toa Baja where flooding and flash flooding reports were received) and parts of north-central to northwestern Puerto Rico during the afternoon. Rainfall totals of up to four inches prompted Flood Advisories and Flash Flood Warnings in the San Juan metro area.

View location on OpenStreetMap → (18.3880, -66.1534)

Source: NOAA Storm Events Database, event_id 1278446. Narrative written by the NWS forecast office that issued the report.