Flash Flood — Maunabo, Puerto Rico

2017-05-11 · near Maunabo, Maunabo, Puerto Rico

$1.0M

Property damage

Event narrative

The combination of a mid to upper-level trough and a surface trough with abundant moisture result in scattered to numerous showers across the region.

As a result, Emergency managers reported Rio Maunabo out of its banks, flood waters along sector Garona Bo. Tumbao.

Wider weather episode

The proximity of a mid-upper level trough and a surface shortwave trough with abundant moisture provided favorable environmental conditions for the development of thunderstorms and widespread showers over the region.

May-11/12z TJSJ sounding showed west-northwest steering wind flow under 10 knots and precipitable at 1.64 inches. Soils were saturated due to previous rain events, and a Flash Flood Watch was issued for that afternoon.

View location on OpenStreetMap → (18.0100, -65.9249)

Source: NOAA Storm Events Database, event_id 703582. Narrative written by the NWS forecast office that issued the report.