Puerto Rico, 2001

Flash Flooding in Puerto Rico, September 20, 2001

September 20, 2001 · NWS SJU · 3 events in 3 counties and zones

Strong thunderstorms developed over the northern interior sections of Puerto Rico during the afternoon. Emergency Managers reported various rivers out of theirs banks in Lares and Jayuya.

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.

What happened

The episode as NWS SJU wrote it up.

Strong thunderstorms developed over the northern interior sections of Puerto Rico during the afternoon. Emergency Managers reported various rivers out of theirs banks in Lares and Jayuya. Small hail was reported in Ciales and Morovis and San Sebastian recorded strong gusty winds.

Event by event

3 flash flood. Local standard time, as filed.

Flash Flood, North Central

When
September 20, 2:00 PM AST to 4:00 PM AST
Where
North Central County, South Portion
Reported by
EMERGENCY MANAGER

Flash Flood, Central Interior

When
September 20, 2:00 PM AST to 4:00 PM AST
Where
Central Interior County, Northwest Portion
Reported by
EMERGENCY MANAGER

Flash Flood, Western Interior

When
September 20, 2:00 PM AST to 4:00 PM AST
Where
Western Interior County, Northwest Portion
Reported by
EMERGENCY MANAGER

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

More

Every storm in Puerto Rico in 2001Every state in 2001This day in weather historyWarnings in Puerto Rico, September 2001

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: 5269122, 5269123, 5269124.