An active tropical wave moved across Puerto Rico and the U.S. Virgin Islands on Monday July 19, generating numerous showers and isolated thunderstorms, some with very heavy rain. Weather conditions improved during the evening of Monday July 19, but by early morning July 20th, additional showers and thunderstorms resulted in flooding across much of the eastern half of Puerto Rico. Although by Tuesday morning July 20 the tropical wave axis had moved into Hispaniola, the wave itself was maintaining a broad area of disturbed weather, aided in part by an upper level low pressure system just north northwest of the local area. As a result, Tuesday July 20 was another very active weather day, with heavy rains persisting across the eastern half of Puerto Rico and additional shower and thunderstorm formation across the southwestern sections of Puerto Rico. On Wednesday July 21, local effects combined with available moisture behind the initial tropical wave to generate additional showers and thunderstorms across the eastern and northern sections of Puerto Rico. By this time the soils had become saturated and any additional rainfall greatly increased the chance for flash flooding. By late Thursday July 22, the islands were still dealing with the effects of several days of widespread rainfall. Even though this tropical disturbance, which later became Tropical Storm Bonnie, was now located over eastern Cuba, it was still able to generate another band of moisture which brought additional areas of rainfall across Puerto Rico and the U.S. Virgin Islands. USGS rain sensor at NSSR/Ceiba 3SE recorded 9.03 inches for the 24 hour period ending on July 20th, followed by Rio Grande de Loiza/San Lorenzo which recorded 7.31 inches.

Flash Flood in FAJARDO, PUERTO RICO
From 20-JUL-10 22:39:00 to 20-JUL-10 23:59:00 (AST-4)
Location: FAJARDO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

River Fajardo was overflowing its banks and flooding PR3 and PR53 between the municipalities of Fajardo and Ceiba.

Flash Flood in RIO GRANDE, PUERTO RICO
From 19-JUL-10 10:06:00 to 19-JUL-10 19:30:00 (AST-4)
Location: RIO GRANDE
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A house was reported flooded at Villas de Rio Grande.

Flash Flood in SAN LORENZO, PUERTO RICO
From 19-JUL-10 12:03:00 to 19-JUL-10 19:15:00 (AST-4)
Location: SAN LORENZO
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A house was reported flooded at Barrio Quemados, Road 181, Km 1.0 in the municipality of San Lorenzo.

Flash Flood in LUQUILLO, PUERTO RICO
From 19-JUL-10 12:59:00 to 19-JUL-10 19:15:00 (AST-4)
Location: LUQUILLO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Road 3,km 42, H 4 was flooded at Barrio Juan Martin, Florida sector.

Flash Flood in SAN LORENZO, PUERTO RICO
From 19-JUL-10 11:12:00 to 19-JUL-10 19:30:00 (AST-4)
Location: SAN LORENZO
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A house was reported flooded at Urb. Vistas de San Lorenzo, Lirio road in the municipality of San Lorenzo.

Flash Flood in FAJARDO, PUERTO RICO
From 19-JUL-10 12:28:00 to 19-JUL-10 19:15:00 (AST-4)
Location: FAJARDO
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A house was reported flooded at Urb. Veve Calzada,behind JF Montalvo supermarket.

Flash Flood in FAJARDO, PUERTO RICO
From 20-JUL-10 04:02:00 to 20-JUL-10 07:30:00 (AST-4)
Location: FAJARDO
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A house an the road was flooded at Puerto Real sector, Cometa road in Barrio Maternillo.

Flash Flood in FAJARDO, PUERTO RICO
From 20-JUL-10 03:48:00 to 20-JUL-10 07:30:00 (AST-4)
Location: FAJARDO
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A house was flooded at Urb. La Roca, near Las Croabas sector.

Flash Flood in CEIBA, PUERTO RICO
From 19-JUL-10 13:38:00 to 19-JUL-10 19:30:00 (AST-4)
Location: CEIBA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Several roads were reported flooded at Urb. Las Vegas.

Flash Flood in FAJARDO, PUERTO RICO
From 19-JUL-10 12:48:00 to 19-JUL-10 19:15:00 (AST-4)
Location: FAJARDO
Flood cause: Heavy Rain
Property damage: 7.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Road 3 was reported flooded behind Interamerican University in Fajardo. A car was also flooded.

Flash Flood in NAGUABO, PUERTO RICO
From 19-JUL-10 13:53:00 to 19-JUL-10 19:30:00 (AST-4)
Location: NAGUABO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A house was flooded at Barrio Hucares, La Playa sector, Road 192,Km 4.0.

Flash Flood in FAJARDO, PUERTO RICO
From 20-JUL-10 04:59:00 to 20-JUL-10 07:30:00 (AST-4)
Location: FAJARDO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Road Garido Morales was reported flooded in the municipality of Fajardo.

Flash Flood in FAJARDO, PUERTO RICO
From 20-JUL-10 03:25:00 to 20-JUL-10 07:30:00 (AST-4)
Location: FAJARDO
Flood cause: Heavy Rain
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Several houses and roads were flooded at Urb. Puerto Real, Union Road in Fajardo.