Puerto Rico, 2024

Flash Flood and Flooding in Puerto Rico, July 10, 2024

July 10, 2024 · NWS SJU · 6 events in 4 counties and zones

A departing tropical wave left above normal moisture across the region. Additionally, an upper-level trough left favorable dynamics for the development of showers and thunderstorms.

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
0
Property damage
$6,000
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.

A departing tropical wave left above normal moisture across the region. Additionally, an upper-level trough left favorable dynamics for the development of showers and thunderstorms. This strong activity led to urban and flash flooding along several municipalities in Puerto Rico.

The radar

The San Juan radar (TJUA), 92 km away, was scanning. The volume nearest the first event began at 16:39 UTC.

Open the radar archive at this moment

Event by event

5 flood, 1 flash flood. Local standard time, as filed.

Flood, Sabana Grande

When
July 10, 12:40 PM AST to 3:15 PM AST
Where
Sabana Grande County, 1.31 mi W of Sabana Grande to 1.54 mi WNW of Sabana Grande
Cause
Heavy Rain
Property damage
$1,000
Reported by
Emergency Manager
Coordinates
18.080, -66.950

Quebrada de Tita went out of its banks, flooding PR-364, near Rancho AA.

Flash Flood, Mayaguez

When
July 10, 1:10 PM AST to 4:00 PM AST
Where
Mayaguez County, 2.41 mi NW of Mayaguez to 2.47 mi WNW of Mayaguez
Cause
Heavy Rain
Property damage
$1,000
Reported by
Social Media
Coordinates
18.220, -67.150

A post on social media indicated flash flooding at Urb. Mayaguez Terrace. The post showed that all principal roads were impacted by flood waters.

Flood, Cabo Rojo

When
July 10, 1:24 PM AST to 3:15 PM AST
Where
Cabo Rojo County, 4.36 mi NNW of Cabo Rojo to 4.41 mi NNW of Cabo Rojo
Cause
Heavy Rain
Property damage
$1,000
Reported by
911 Call Center
Coordinates
18.088, -67.155

Flooding was reported in front of Cabo Rojo Shopping Court, PR-100.

Flood, Mayaguez

When
July 10, 1:40 PM AST to 4:00 PM AST
Where
Mayaguez County, 2.33 mi WNW of Mayaguez to 2.36 mi WNW of Mayaguez
Cause
Heavy Rain
Property damage
$1,000
Reported by
Social Media
Coordinates
18.209, -67.154

Flooding was reported at Calle Heyliser, just in front of Restaurant La Llave del Mar.

Flood, Mayaguez

When
July 10, 1:41 PM AST to 4:00 PM AST
Where
Mayaguez County, 1.61 mi W of Mayaguez to 1.7 mi W of Mayaguez
Cause
Heavy Rain
Property damage
$1,000
Reported by
Social Media
Coordinates
18.202, -67.144

Flooding was reported at Calle Estacion, behind the old Eugenio Maria de Hostos School, where the ICPR Junior College is located.

Flood, San German

When
July 10, 2:08 PM AST to 3:00 PM AST
Where
San German County, 2.44 mi WNW of San German to 2.26 mi WNW of San German
Cause
Heavy Rain
Property damage
$1,000
Reported by
Emergency Manager
Coordinates
18.117, -67.063

A water surge from Rio Hoconuco flooded the crossway at Sector Rio Hoconuco Bajo.

What these are

Flood
Flooding that develops more slowly than a flash flood: rivers leaving their banks, or water standing over land for an extended time.
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 2024Every state in 2024This day in weather historyWarnings in Puerto Rico, July 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 2026-10-01. Each event’s entry at NCEI: 1196313, 1196310, 1196323, 1196315, 1196317, 1196319.