A weak trough near the Leeward islands was maintaining a weak steering flow over the local islands. Instability aloft was increasing as mid level temperatures cool down. The combination of these factors, along with strong diurnal heating and enough moisture in the lower levels resulted in very strong showers and isolated thunderstorms over the area. Several reports of mudslides and flooding were received.

Thunderstorm Wind in NARANJITO, PUERTO RICO
From 28-APR-23 17:05:00 to 28-APR-23 19:00:00 (AST-4)
Location: NARANJITO
Magnitude: 22.00 ES
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency managers reported a tree down at road PR-815 in Naranjito. Wind speeds were around 25 mph.

Flash Flood in GUAYNABO, PUERTO RICO
From 28-APR-23 18:00:00 to 29-APR-23 19:00:00 (AST-4)
Location: GUAYNABO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Significant flooding was reported along road PR-177, near Panderia Lemy.

Flash Flood in COROZAL, PUERTO RICO
From 28-APR-23 15:56:00 to 28-APR-23 19:40:00 (AST-4)
Location: COROZAL
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency managers reported five people trapped by a water surge in Charco La Buruquena. They were eventually rescued once the water levels receded.

Flood in GUAYNABO, PUERTO RICO
From 28-APR-23 16:35:00 to 28-APR-23 18:25:00 (AST-4)
Location: GUAYNABO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Flooding was reported at Road PR-833, heading toward the park.

Flash Flood in NARANJITO, PUERTO RICO
From 28-APR-23 16:46:00 to 28-APR-23 18:00:00 (AST-4)
Location: NARANJITO
Flood cause: Heavy Rain
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Water from flooding was entering into a house. The house was described as a pink house on the left of Cuesta La Cuertel.

Flood in SAN JUAN, PUERTO RICO
From 28-APR-23 17:32:00 to 28-APR-23 20:00:00 (AST-4)
Location: SAN JUAN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Flooding was reported along Ave. Glasgow.

Debris Flow in UTUADO, PUERTO RICO
From 28-APR-23 14:00:00 to 28-APR-23 16:00:00 (AST-4)
Location: UTUADO
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Mudslide was reported along road PR-606, just after Iglesia San Pedro and San Pablo.

Debris Flow in BAYAMON, PUERTO RICO
From 28-APR-23 04:00:00 to 28-APR-23 06:00:00 (AST-4)
Location: BAYAMON
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A mudslide was reported in Sector Tarzan in Bayamon.

Flood in NARANJITO, PUERTO RICO
From 28-APR-23 17:33:00 to 28-APR-23 18:00:00 (AST-4)
Location: NARANJITO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Flooding was reported along Calle 20.

Flood in GUAYNABO, PUERTO RICO
From 28-APR-23 17:55:00 to 28-APR-23 19:00:00 (AST-4)
Location: GUAYNABO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Flooding was reported along Calle 21.

Flash Flood in GUAYNABO, PUERTO RICO
From 28-APR-23 18:00:00 to 28-APR-23 19:30:00 (AST-4)
Location: GUAYNABO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

A video shared by an employee from the NWS showed impassable roads near Ave. San Patricio.

Flash Flood in GUAYNABO, PUERTO RICO
From 28-APR-23 18:37:00 to 28-APR-23 19:30:00 (AST-4)
Location: GUAYNABO
Flood cause: Heavy Rain
Property damage: 40.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A Grand Cherokee car was being swept by the flash flood near San Patricio, close to Church's Chicken fast food restaurant, and Oriental Bank.

Debris Flow in BAYAMON, PUERTO RICO
From 28-APR-23 17:00:00 to 28-APR-23 18:00:00 (AST-4)
Location: BAYAMON
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency managers reported a mudslide affecting road PR-830.

Flood in CAROLINA, PUERTO RICO
From 28-APR-23 18:50:00 to 28-APR-23 19:40:00 (AST-4)
Location: CAROLINA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

NWS Employee reported about half a foot of standing water along Calle Dalia in Isla Verde. The road was still passable in some areas.

Flood in RIO GRANDE, PUERTO RICO
From 28-APR-23 20:57:00 to 28-APR-23 22:00:00 (AST-4)
Location: RIO GRANDE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

NWS employee indicated that the entrance to the gate to the Coco Beach living complex was impassable due to flooding.

Flood in NARANJITO, PUERTO RICO
From 28-APR-23 15:45:00 to 28-APR-23 19:40:00 (AST-4)
Location: NARANJITO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency managers reported flooding at Calle Georgetti, which is the road opposite to the Municipal Police Station.