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

Name: Flash Flooding and Flooding in Puerto Rico, September 26, 1997
Start: 1997-09-26T08:30
End: 1997-09-26T16:00
Location: Puerto Rico

September 26, 1997 · NWS SJU · 6 events in 3 counties and zones

4 flash flood, 2 flood, as filed by the National Weather Service.

The toll

Deaths: 0
Injuries: 0
Property damage: None recorded
Crop damage: None recorded
Events: 6

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

4 flash flood, 2 flood. Local standard time, as filed.

Flash Flood, Humacao

When: September 26, 8:30 AM AST to 4:00 PM AST
Where: Humacao County, Humacao

Civil Defense reported small streams out of their banks and flooded houses in the municipalities of Humacao, Guayama, and Naguabo.

Flash Flood, Humacao

When: September 26, 9:15 AM AST to 4:00 PM AST
Where: Humacao County, Humacao

Quebrada Tres Muertos creek went out of its banks flooding the neighborhoods of Mabu, Los Rosales, San Francisco, Ext. Roig, Paraizo, Villa de Oriente, and the fire station.

Flood, Humacao

When: September 26, 9:15 AM AST to 4:00 PM AST
Where: Humacao County, Ceiba

Urban flooding was reported at Las Vegas urbanization.

Flood, Guayama Salinas

When: September 26, 9:15 AM AST to 4:00 PM AST
Where: Guayama Salinas County, Arroyo

Flash Flood, Fajardo Rio Grande

When: September 26, 9:15 AM AST to 4:00 PM AST
Where: Fajardo Rio Grande County, Fajardo

River Rio Fajardo was reported out of its banks near the Union and Hatillo streets.

Flash Flood, Humacao

When: September 26, 9:15 AM AST to 4:00 PM AST
Where: Humacao County, Naguabo

River Rio Naguabo was reported out of its banks.

What these are

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.
Flood: Flooding that develops more slowly than a flash flood: rivers leaving their banks, or water standing over land for an extended time.

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: 5626946, 5627042, 5627043, 5627044, 5627045, 5627046.