A deep mid and level trough north of the area combined with a frontal boundary near the area to result in periods of enhanced shower and thunderstorm activity. During the afternoon hours of 5/21 and 5/22, severe thunderstorms developed across interior Puerto Rico, then during the predawn hours of 5/23, an area of very heavy rainfall activity affected the coastal municipalities of eastern PR.

Flood in CAMUY, PUERTO RICO
From 22-MAY-21 18:00:00 to 22-MAY-21 18:00:00 (AST-4)
Location: CAMUY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Flooding reported along Road PR-453.

Flash Flood in HUMACAO, PUERTO RICO
From 23-MAY-21 05:00:00 to 23-MAY-21 09:30:00 (AST-4)
Location: HUMACAO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Road PR-3 was flooded all the way through the port.

Debris Flow in HUMACAO, PUERTO RICO
From 23-MAY-21 05:00:00 to 23-MAY-21 09:30:00 (AST-4)
Location: HUMACAO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Mudslide affected a house along Road PR-923 KM 3.7.

Flash Flood in HUMACAO, PUERTO RICO
From 23-MAY-21 05:00:00 to 23-MAY-21 09:30:00 (AST-4)
Location: HUMACAO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Various roads were flooded along Urbanization Verde Mar.

Flash Flood in HUMACAO, PUERTO RICO
From 23-MAY-21 05:00:00 to 23-MAY-21 09:30:00 (AST-4)
Location: HUMACAO
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Flooding reported in a house in Urbanization Buena Vista, Calle 3.

Flash Flood in NAGUABO, PUERTO RICO
From 23-MAY-21 05:00:00 to 23-MAY-21 09:30:00 (AST-4)
Location: NAGUABO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Significant flooding reported along several areas in the municipality: Road PR-31 between KM 36 and 37, Road PR-192 in Barrio Albert Culbert, Road PR-973 KM 1.7 in Barrio Mariana, Road PR-970 in Barrio Duque, Road PR-927 KM 4 in Barrio Rios, Road PR-970 in Barrio Maizales, Road PR-191 in Sector Benitez, Road PR-3 in Barrio Botijas, and Road PR-31 intersection with Exit 22 of Expresso 53.

Flood in MOROVIS, PUERTO RICO
From 22-MAY-21 17:30:00 to 22-MAY-21 18:00:00 (AST-4)
Location: MOROVIS
Flood cause: Heavy Rain
Property damage: 0.50K
Crop damage: 0.00K
Reported by: 911 Call Center

Section of Road PR-155 got flooded due to a small stream going out of its banks, affecting a residence.

Flood in MOROVIS, PUERTO RICO
From 22-MAY-21 16:20:00 to 22-MAY-21 18:00:00 (AST-4)
Location: MOROVIS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Flooding reported in Calle 1 in Barrio Torrecillas.

Hail in COROZAL, PUERTO RICO
From 22-MAY-21 16:15:00 to 22-MAY-21 16:30:00 (AST-4)
Location: COROZAL
Magnitude: 1.00 
Reported by: Public

Quarter size hail reported in Barrio Cibuco.

Thunderstorm Wind in MOROVIS, PUERTO RICO
From 22-MAY-21 16:15:00 to 22-MAY-21 16:30:00 (AST-4)
Location: MOROVIS
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A severe thunderstorm moved across the municipality of Morovis, producing downed trees and powerlines along Roads PR-159 and PR-567.

Hail in COROZAL, PUERTO RICO
From 21-MAY-21 14:15:00 to 21-MAY-21 14:45:00 (AST-4)
Location: COROZAL
Magnitude: 1.00 
Reported by: Public

Quarter size hail reported in Barrio Cuchillas.

Thunderstorm Wind in MOROVIS, PUERTO RICO
From 21-MAY-21 13:45:00 to 21-MAY-21 14:45:00 (AST-4)
Location: MOROVIS
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A severe thunderstorm moved across the municipality of Morovis, generating strong gusty winds. Several trees and electrical poles were knocked down by the winds along Roads PR-633, 155, 159, and 567.

Thunderstorm Wind in HATILLO, PUERTO RICO
From 22-MAY-21 23:30:00 to 22-MAY-21 23:30:00 (AST-4)
Location: HATILLO
Magnitude: 35.00 EG
Property damage: 0.50K
Reported by: Emergency Manager

Three fallen trees were reported along Road PR-119.