Debris Flow — San Sebastian, Puerto Rico

2023-10-27 · near San Sebastian, San Sebastian, Puerto Rico

$4K

Property damage

Event narrative

A 911 reporter informed that there was a large rock obstructing Carretera 119 in San Sebastian, near sector La Lechuza.

Wider weather episode

Moisture pulled into the region by TC Tammy (by that time well north of the area), in combination with an upper-level trough, a frontal boundary and a pre-frontal trough, produced numerous showers and thunderstorms across the islands. Between 3 and 7 inches of rain were observed across the northern, eastern, and central portions of Puerto Rico. Several Debris Flow episodes and at least 1 case of wind damage were reported. Swells from Tammy also produced hazardous marine and coastal conditions, resulting in coastal flood in several northern areas.

View location on OpenStreetMap → (18.3465, -66.9790)

Source: NOAA Storm Events Database, event_id 1146031. Narrative written by the NWS forecast office that issued the report.