NWS San Juan PRFF.W 0027August 9, 2026
Flash Flood Warning: Mayaguez, PR
The National Weather Service office in San Juan issued a flash flood warning for Mayaguez in Puerto Rico, which was in force until 6:00 p.m. local time on August 9. It was the 27th flash flood warning the NWS office in San Juan issued in 2026. Puerto Rico had 1 flash flood warning in August 2026, against 8 in an average August of 2008-2025 (Puerto Rico's flash flood warnings by year).
ExpiredWarning
In force for 2.1 hours; it has expired. The agency may have replaced it with a new notice.
The notice
- Issued by
- National Weather Service, San Juan PR
- Area
- Mayaguez
- State
- Puerto Rico
- Level
- Warning
- Issued
- 3:52 p.m. EDT, August 9, 2026
- Expires
- 6:00 p.m. EDT, August 9, 2026
- CAP severity, certainty, urgency
- Severe, Likely, Immediate
- VTEC event
- TJSJ FF.W 0027
- Official source
- National Weather Service: the notice at its source
Source: National Weather Service: the notice at its source. AreaZine rebuilds this page from the agency's record; the agency's page is the one to act on. A U.S. Government work, in the public domain.
The notice as issued
FFWSJU The National Weather Service in San Juan has issued a * Flash Flood Warning for... Mayaguez Puerto Rico... * Until 600 PM AST. * At 352 PM AST, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 2 and 4 inches of rain have fallen. Additional rainfall amounts of 1 to 2 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar indicated. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas.
What the agency told people to do
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles.
Source: National Weather Service: the notice at its source. The text is the agency's, unedited. A U.S. Government work, in the public domain.