Headline:
Flash Flood Warning issued September 1 at 12:47AM AST until September 1 at 3:15AM AST by NWS San Juan PR
Event:
Flash Flood Warning
Urgency:
Immediate
Effective:
August 31, 2026 - 9:47pm
Expires:
September 1, 2026 - 12:15am
Description:
At 1247 AM 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 2 to 3 inches are possible in
the warned area. Flash flooding is ongoing or expected to begin
shortly.
HAZARD...Life threatening flash flooding. Thunderstorms producing
flash flooding.
SOURCE...Radar indicated.
IMPACT...Life threatening flash flooding of creeks and streams, urban
areas, highways, streets and underpasses.
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