Flash Flood — San Juan, Puerto Rico

2025-04-29 · near San Juan, San Juan, Puerto Rico

Event narrative

Flooding was reported along Calle Antartica in Rio Piedras.

Wider weather episode

From April 26 through 30, a moist and unstable weather pattern affected Puerto Rico and the U.S. Virgin Islands. The episode began as deep tropical moisture moved into the region from the southeast, interacting with deep-layer troughs and supportive jet dynamics aloft. This synoptic setup led to daily rounds of scattered to numerous showers and isolated thunderstorms, especially during the afternoons across the interior and western portions of Puerto Rico.

View location on OpenStreetMap → (18.4133, -66.0746)

Source: NOAA Storm Events Database, event_id 1257222. Narrative written by the NWS forecast office that issued the report.