Flash Flood, Humacao
- When
- July 20, 3:00 PM AST to July 21, 11:59 PM AST
- Where
- Humacao County, Naguabo
Flash Flood in Puerto Rico, July 20 to 21, 1997
A tropical wave moved across Puerto Rico and produced heavy rains which caused roads to flood and landslides mainly along the east and northeast sections. The most affected area extended from Rio Grande to Guayama.
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.
A tropical wave moved across Puerto Rico and produced heavy rains which caused roads to flood and landslides mainly along the east and northeast sections. The most affected area extended from Rio Grande to Guayama. Many roads were reported impassable like road 906 in Yabucoa, road 3 in front of Palmas del Mar in Humacao, road 198 which leads from Humacao to Las Piedras, road 906, 31, and 191 in Naguabo.
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
- Heat in Missouri, July 20, 1997
- Lightning Strikes and Heavy Rain in Wisconsin, July 20 to 21, 1997
- Damaging Wind in Iowa, July 20, 1997
- Tornado in Iowa, July 20, 1997
- Damaging Wind in Iowa, July 20, 1997
- Damaging Wind in Iowa, July 20, 1997
- Damaging Wind in Iowa, July 20, 1997
- Flash Flood and Hail in Oklahoma, July 20, 1997
- Lightning Strike in Florida, July 20, 1997
- Tornado in Minnesota, July 20 to 21, 1997
- Tornadoes and Hail in Minnesota, July 20, 1997
- Funnel Clouds in Wisconsin, July 20, 1997
More
Every storm in Puerto Rico in 1997Every state in 1997This day in weather historyWarnings in Puerto Rico, July 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 2026-09-30. Each event’s entry at NCEI: 5622223.