Puerto Rico, 2024

Flash Flooding and Debris Flow in Puerto Rico, April 7 to 9, 2024

April 7 to 9, 2024 · NWS SJU · 6 events in 6 counties and zones

Increase in moisture, remnants of a cold front to our north and a nearby prefrontal surface trough approached the islands and sinked southward, creating favorable weather |conditions for unsettled weather and above normal moisture. These wet and unstable conditions promoted showery weather for the first half of that week.

Where it happened

Every event with a place to put it. Tap one for its entry below.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

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The toll

Deaths
0
Injuries
3
Property damage
$12,000
Crop damage
None recorded
Events
6

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.

Increase in moisture, remnants of a cold front to our north and a nearby prefrontal surface trough approached the islands and sinked southward, creating favorable weather |conditions for unsettled weather and above normal moisture. These wet and unstable conditions promoted showery weather for the first half of that week. Flooding, Flash Flooding and Landslides were reported.

The radar

The San Juan radar (TJUA), 28 km away, was scanning. The volume nearest the first event began at 19:26 UTC.

Open the radar archive at this moment

Event by event

4 flash flood, 1 heavy rain, 1 debris flow. Local standard time, as filed.

Flash Flood, San Juan

When
April 7, 3:27 PM AST to 5:00 PM AST
Where
San Juan County, 0.95 mi SW of San Juan to 0.9 mi SW of San Juan
Cause
Heavy Rain
Property damage
$5,000
Reported by
State Official
Coordinates
18.370, -66.060

Flooding was reported in Lomas Verdes Ave. on road 177 over Rio Piedras, near a Walgreens Drug Store. A vehicle was trapped in the flood waters.

Heavy Rain, Caguas

When
April 8, 2:45 PM AST
Where
Caguas County, 4.17 mi WSW of Caguas
Reported by
Mesonet
Coordinates
18.180, -66.090

Mesonet Station BZDP4 3.6 SE Sumidero reported 2.81 inches of rain at 2:45 PM AST.

Flash Flood, Orocovis

When
April 8, 5:30 PM AST to 7:30 PM AST
Where
Orocovis County, 1.97 mi ENE of Orocovis to 2.09 mi ENE of Orocovis
Cause
Heavy Rain
Property damage
$5,000
Reported by
County Official
Coordinates
18.228, -66.391

Flash flooding was reported by municipal officials along portions of rio Orocovis near the city town in road 568 and in Sector Bajuras. No people trapped were reported.

Flash Flood, Naguabo

When
April 8, 5:39 PM AST to 7:30 PM AST
Where
Naguabo County, 4.15 mi WNW of Naguabo to 4.12 mi WNW of Naguabo
Cause
Heavy Rain
Injuries
3 direct, 0 indirect
Reported by
911 Call Center
Coordinates
18.247, -65.786

The 911 call center reported that three people were affected by a water surge in Charco El Hippie near Rio Blanco in Naguabo, PR. Emergency managers reported that the three people were rescued.

Flash Flood, Canovanas

When
April 8, 7:12 PM AST to 8:30 PM AST
Where
Canovanas County, 0.98 mi SW of Canovanas to 1.19 mi SW of Canovanas
Cause
Heavy Rain
Property damage
$1,000
Reported by
State Official
Coordinates
18.319, -65.890

Flash Flooding was reported at PR-185 near La Vega entrance and Rio Canovanas in Canovanas, PR. No people trapped were reported.

Debris Flow, Trujillo Alto

When
April 9, 1:55 PM AST to 2:00 PM AST
Where
Trujillo Alto County, 3.61 mi ESE of Trujillo Alto to 3.6 mi ESE of Trujillo Alto
Cause
Heavy Rain
Property damage
$1,000
Reported by
911 Call Center
Coordinates
18.308, -65.950

A 911 reporter informed that there was a landslide in Carretera 852 near Sabana Bakery in Trujillo Alto. The emergency manager informed that there were no people or roads affected directly.

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.
Heavy Rain
Rainfall totals unusual for the place and season that did not produce a flood.
Debris Flow
A fast-moving slurry of mud, rock and debris, usually on a slope soaked by heavy rain or stripped by a fire.

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

The same day elsewhere

More

Every storm in Puerto Rico in 2024Every state in 2024This day in weather historyWarnings in Puerto Rico, April 2024

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: 1176000, 1167356, 1167351, 1167352, 1167353, 1176012.