Flash Flood Warning Issued for Arroyo, Maunabo, Patillas, Yabucoa PR
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NWS San Juan PR has issued a Flash Flood Warning for Arroyo, Maunabo, Patillas and Yabucoa until 3:15 AM AST due to thunderstorms producing heavy rain.
Read this weather record in 30 seconds
- Record type
- Flash Flood Warning
- Affected area
- Southeastern Puerto Rico
- Issued
- September 1, 2026
- Issuing authority
- NWS San Juan PR
Flood notices turn on location and timing. Treat the named area as this record's scope; do not assume nearby counties, parishes, or waterways were included.
Record status: publication date is recent, but current status is not stored on this page. Check the issuing agency's live warning service before acting because warnings can be updated, narrowed, or cancelled.
Alert Details
Flash Flood Warning issued by NWS San Juan PR. Effective from September 1 at 12:21 AM AST until September 1 at 3:15 AM AST. Severity: Severe. Urgency: Immediate. Certainty: Likely.
Affected Areas
Arroyo, PR; Maunabo, PR; Patillas, PR; Yabucoa, PR.
What You Should Do
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.
Expected Conditions
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.
Timeline
Alert effective September 1 at 12:21 AM AST. Expires and ends September 1 at 3:15 AM AST.
Original source: NOAA Official Notice ↗
Related Weather Alerts
All Weather Alerts →Nationwide notices with similar length or severity timing 8
Two Areazine-derived peer sets for this NWS weather alert: nearest notices by body length and by same severity near the same agency date. Peers come from other categories so they are not the same-feed Related list above.
Similar body length
Nearest notices by article body length (1,112 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to September 1, 2026.
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