Flash Flooding and Heavy Rain in Puerto Rico, September 26, 1997

Name: Flash Flooding and Heavy Rain in Puerto Rico, September 26, 1997
Start: 1997-09-26T09:30
End: 1997-09-26T11:00
Location: Puerto Rico

September 26, 1997 · NWS SJU · 3 events in 3 counties and zones

2 flash flood, 1 heavy rain, as filed by the National Weather Service.

The toll

Deaths: 0
Injuries: 0
Property damage: None recorded
Crop damage: None recorded
Events: 3

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

Event by event

2 flash flood, 1 heavy rain. Local standard time, as filed.

Heavy Rain, Guayama Salinas

When: September 26, 9:30 AM AST to 11:00 AM AST
Where: Guayama Salinas County, Salinas

Highway 3 was reported impassable from Salinas to Guayama.

Flash Flood, Humacao

When: September 26, 9:55 AM AST to 11:00 AM AST
Where: Humacao County, Naguabo

River Rio Blanco was reported out of its banks. Police reported waters rising rapidly at Barrio Mariana, Quebrada Palma sector.

Flash Flood, Fajardo Rio Grande

When: September 26, 10:05 AM AST to 11:00 AM AST
Where: Fajardo Rio Grande County, Fajardo

River Rio Fajardo was reported out of its banks in some places.

What these are

Heavy Rain: Rainfall totals unusual for the place and season that did not produce a flood.
Flash Flood: Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

Every storm in Puerto Rico in 1997 Every state in 1997 This day in weather history Warnings in Puerto Rico, September 1997

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5627047, 5627048, 5627049.