Headline:
Flash Flood Warning issued September 1 at 12:21AM AST until September 1 at 3:15AM AST by NWS San Juan PR
Event:
Flash Flood Warning
Urgency:
Immediate
Effective:
August 31, 2026 - 9:21pm
Expires:
September 1, 2026 - 12:15am
Description:
FFWSJU
The National Weather Service in San Juan has issued a
* Flash Flood Warning for...
Arroyo, Maunabo, Patillas, Yabucoa...
* Until 315 AM AST.
* At 1221 AM AST, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1 and 3 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.
Instruction:
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
Area Description:
Arroyo, PR; Maunabo, PR; Patillas, PR; Yabucoa, PR
Forcast Office:
NWS San Juan PR
Sender:
w-nws.webmaster@noaa.gov