Flash Flood, San Juan
- When
- December 2, 8:00 PM AST to December 3, 6:00 AM AST
- Where
- San Juan County, Central Portion
- Reported by
- NWS EMPLOYEE(OFF DUTY)
Flash Flood in Puerto Rico, December 2 to 3, 1999
Weather service personnel indicated that La Plata river near Dorado and the Grande de Loiza river in Loiza and Carolina were causing significant flooding.
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 1
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.
Weather service personnel indicated that La Plata river near Dorado and the Grande de Loiza river in Loiza and Carolina were causing significant flooding.
Event by event
1 flash flood. Local standard time, as filed.
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
- Tornado and Hail in Texas, December 2, 1999
- Tornadoes and Hail in Oklahoma, December 2, 1999
- Tornado and Hail in Arkansas, December 2 to 3, 1999
- Winter Storm and Heavy Snow in Idaho, December 2 to 31, 1999
- Heavy Snow in Utah, December 2 to 3, 1999
- Hail and Damaging Winds in Oklahoma, December 2 to 3, 1999
- Winter Storm in Idaho, December 2, 1999
- High Wind in Washington, December 2, 1999
- Heavy Snow and Hail in Kansas, December 2 to 5, 1999
- Tornado in Oregon, December 2, 1999
- High Wind in California, December 2 to 3, 1999
- Heavy Snow in Washington, December 2 to 31, 1999
More
Every storm in Puerto Rico in 1999Every state in 1999This day in weather historyWarnings in Puerto Rico, December 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 2026-09-24. Each event’s entry at NCEI: 5724479.