Flash Flooding in Puerto Rico, June 17, 1999

Name: Flash Flooding in Puerto Rico, June 17, 1999
Start: 1999-06-17T14:00
End: 1999-06-17T18:00
Location: Puerto Rico

June 17, 1999 · NWS SJU · 2 events in 2 counties and zones

Heavy rains caused two houses to collapse in Bairoa sector in Caguas. Road 796 right across from the houses, broke into pieces.

The toll

Deaths: 0
Injuries: 0
Property damage: $220,000
Crop damage: None recorded
Events: 2

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.

What happened

The episode as NWS SJU wrote it up.

Heavy rains caused two houses to collapse in Bairoa sector in Caguas. Road 796 right across from the houses, broke into pieces. Elsewhere, mudslides affected 15 homes in the Alto Monte sector in Caguas. The mud engulfed their properties and destroyed most of their belongings. In addition Civil Defense indicated few houses affected by the rain in Morovis.

Event by event

2 flash flood. Local standard time, as filed.

Flash Flood, San Juan

When: June 17, 2:00 PM AST to 6:00 PM AST
Where: San Juan County, Central Portion
Property damage: $200,000
Reported by: NEWSPAPER

Flash Flood, Humacao

When: June 17, 2:00 PM AST to 6:00 PM AST
Where: Humacao County, West Central Portion
Property damage: $20,000
Reported by: EMERGENCY MANAGER

Civil Defense indicated few houses affected by the rains in Las Piedras and Juncos.

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.

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

The same day elsewhere

Every storm in Puerto Rico in 1999 Every state in 1999 This day in weather history Warnings in Puerto Rico, June 1999

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 2026-10-01. Each event’s entry at NCEI: 5708783, 5708784.