Flash Flood Risk Across Puerto Rico and Virgin Islands

Puerto Rico, along with the U.S./British Virgin Islands, is under a widespread flash flooding risk as moderate rainfall has already begun. Numerous flash flood warnings have already been issued, with heavy rain continuing to fuel the threat through Wednesday. Flash Flood Warnings extend across Puerto Rico and the U.S. and British Virgin Islands, where some areas have already seen several inches of rain.

Storm System Intensifies Rainfall Threat

An upper-level dip in the jet stream now pushing south will allow tropical moisture and instability to build over time, fueling the heavy rain and flooding threat, according to the FOX Forecast Center. By the midpoint of the week, increasing rain totals could lead to rivers overflowing rapidly and urban flooding, with closed roads and a heavy influx of traffic expected. At least 3 to 5 inches of rain is expected across higher elevations in Puerto Rico, but some areas could see as much as 12 inches.

Ongoing Risks and Gradual Relief Expected

Landslides are possible due to significant runoff from flooding, adding to the risks across affected regions. Scattered showers are expected to persist through the latter part of the week, but their intensity will diminish, allowing the flood risk to gradually subside. Meanwhile, severe weather activity is also impacting other U.S. regions, with storms affecting Guam and Hawaii prompting emergency response efforts.