Flash Flood · Puerto Rico

Flash Flood May 11, 2017 · Maunabo, Puerto Rico

$1.0M

Damage as recorded

Where the report was made, with tornadoes recorded within 15 miles over the years.

What the National Weather Service wrote

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.

The wider storm

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.

Began near Maunabo (18.0100, -65.9249).

Source: NOAA Storm Events Database, event 703582. Narratives are written by the National Weather Service forecast office that issued the report.

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