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FFASJU



Flood Watch

National Weather Service San Juan PR

425 PM AST Fri May 3 2024



...There is an increasing risk for Flash Flooding through the

weekend due to favorable atmospheric conditions resulting in

periods of heavy rainfall as well as saturated soils and rivers

running above normal levels...



PRZ001>013-VIZ001-002-040430-

/O.CON.TJSJ.FA.A.0002.000000T0000Z-240505T2200Z/

/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

San Juan and Vicinity-Northeast-Southeast-Eastern Interior-

North Central-Central Interior-Ponce and Vicinity-Northwest-

Western Interior-Mayaguez and Vicinity-Southwest-Culebra-Vieques-

St.Thomas...St. John...and Adjacent Islands-St Croix-

Including the cities of Bayamon, Carolina, Catano, Guaynabo, 

San Juan, Toa Alta, Toa Baja, Trujillo Alto, Ceiba, Canovanas, 

Fajardo, Humacao, Loiza, Luquillo, Naguabo, Rio Grande, Arroyo, 

Guayama, Maunabo, Patillas, Salinas, Yabucoa, Aguas Buenas, 

Caguas, Cayey, Cidra, Comerio, Gurabo, Juncos, Las Piedras, 

San Lorenzo, Arecibo, Barceloneta, Dorado, Florida, Manati, 

Vega Alta, Vega Baja, Aibonito, Barranquitas, Ciales, Coamo, 

Corozal, Jayuya, Morovis, Naranjito, Orocovis, Villalba, 

Guayanilla, Juana Diaz, Yauco, Penuelas, Ponce, Santa Isabel, 

Aguadilla, Camuy, Hatillo, Isabela, Quebradillas, Adjuntas, 

Lares, Las Marias, Maricao, Sabana Grande, San Sebastian, Utuado,

Aguada, Anasco, Hormigueros, Mayaguez, Moca, Rincon, San German, 

Cabo Rojo, Guanica, Lajas, Culebra, Vieques, Anna's Retreat, 

Charlotte Amalie, Charlotte Amalie East, Charlotte Amalie West, 

Cruz Bay, Christiansted, Frederiksted, Frederiksted Southeast, 

and Grove Place

425 PM AST Fri May 3 2024



...FLOOD WATCH REMAINS IN EFFECT THROUGH SUNDAY AFTERNOON...



* WHAT...Flooding caused by excessive rainfall.



* WHERE...Puerto Rico and the U.S. Virgin Islands.



* WHEN...Through Sunday afternoon.



* IMPACTS...Excessive runoff may result in flooding of rivers, 

  creeks, streams, and other low-lying and flood-prone locations. 

  Creeks and streams may rise out of their banks. Flooding may occur 

  in poor drainage and urban areas. Low-water crossings may be 

  flooded.



* ADDITIONAL DETAILS...



A trough combined with deep moisture will bring periods of showers 

and thunderstorms across the islands during the next several days, 

particularly through at least Sunday.



Based on the latest guidance, the most likely time period for the 

heaviest rainfall activity will continue into Saturday. The areas 

most likely to receive the highest rainfall accumulations are 

portions of the northeast, southeast, and east sections of Puerto 

Rico, as well as Vieques, Culebra, and the US Virgin Islands.



Since 8 AM AST, estimated-rainfall totals around 3-4 inches have 

been observed in and around Utuado, Ponce, Catano, and Fajardo. 

Additional rainfall accumulations are expected to range from 2 to 4 

inches, especially for the eastern half of Puerto Rico and the 

Virgin Islands with isolated higher event-total amounts possible 

between 6 and 8 inches. Elsewhere, 1 to 3 inches are expected.



Due to already saturated soils, any prolonged period of heavy 

rainfall will result in urban and small stream flooding. Some rivers 

will likely overflow their banks. Therefore, Isolated life 

threatening flash flooding and mudslides are possible as well.



PRECAUTIONARY/PREPAREDNESS ACTIONS...



You should monitor later forecasts and be alert for possible

Flood Warnings. Those living in areas prone to flooding should be

prepared to take action should flooding develop.



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ICP/GRS