Puerto Rico: Flash flood warning in effect for Aibonito, Cidra, Comerio, and Naranjito until at least 16:00 AST July 31

The US National Weather Service (NWS) has issued a flash flood warning for parts of central Puerto Rico, affecting the municipalities of Aibonito, Cidra, Comerio, and Naranjito, until at least 16:00 AST July 31. Officials could update or amend the warning for the impact areas or surrounding regions in the coming hours.

Sustained heavy rainfall could trigger flooding in low-lying communities near rivers, streams, and creeks. Urban flooding is also possible in developed areas with easily overwhelmed stormwater drainage systems. Sites located downstream from large reservoirs or rivers may be subject to flash flooding after relatively short periods of intense rainfall. Landslides are possible in hilly or mountainous areas, especially where heavy rainfall has saturated the soil.

Localized business disruptions may occur in low-lying areas; some businesses might not operate at full capacity because of flood damage to facilities, possible evacuations, and some employees' inability to reach work sites.