Flash Flood, Humacao
- When
- March 7, 12:00 PM AST to 6:00 PM AST
- Where
- Humacao County, Countywide
- Property damage
- $2.5 million
Flash Flooding in Puerto Rico, March 7, 1998
A surface trough combined with an upper level trough produced showers and thunderstorms across most of the east and northeast sections of Puerto Rico. The municipalities most affected were San Lorenzo, Rio Grande, and Bayamon.
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- $2.6 million
- 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.
A surface trough combined with an upper level trough produced showers and thunderstorms across most of the east and northeast sections of Puerto Rico. The municipalities most affected were San Lorenzo, Rio Grande, and Bayamon. In San Lorenzo mud slides and flood waters affected several residences and bridges. In Rio Grande river Espiritu Santo went out of his banks flooding various neighbourhoods. Some bridges were also affected by the waters. In Bayamon several cars and residences were affected in Santa Rosa neighbourhood.
Event by event
2 flash flood. Local standard time, as filed.
Flash Flood, San Juan
- When
- March 7, 12:00 PM AST to 6:00 PM AST
- Where
- San Juan County, North Portion
- Property damage
- $100,000
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
- Heavy Snow in Iowa, March 7 to 8, 1998
- Blizzard in Kansas, March 7 to 8, 1998
- Lightning Strike in Louisiana, March 7, 1998
- Tornadoes and Flash Flooding in Texas, March 7 to 30, 1998
- Lightning Strike in Alabama, March 7, 1998
- Hail in Mississippi, March 7, 1998
- Winter Storm in Kansas, March 7 to 12, 1998
- Hail and Damaging Wind in Arkansas, March 7, 1998
- Winter Storm in Nebraska, March 7 to 12, 1998
- Hail and Damaging Winds in Texas, March 7, 1998
- Hail and Damaging Wind in Louisiana, March 7, 1998
- Lightning Strike in Georgia, March 7, 1998
More
Every storm in Puerto Rico in 1998Every state in 1998This day in weather historyWarnings in Puerto Rico, March 1998
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: 5652805, 5652806.