Flash Flood Warning Issued for Guayama County, Puerto Rico
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NWS San Juan PR has issued a Flash Flood Warning for Guayama County until 3:15 AM AST on September 1, 2026, due to thunderstorms producing heavy rain.
Read this weather record in 30 seconds
- Record type
- Flash Flood Warning
- Affected area
- Guayama County, 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
A Flash Flood Warning has been issued by the National Weather Service in San Juan PR. The alert is effective from September 1, 2026 at 12:34 AM AST until September 1, 2026 at 3:15 AM AST. The event code is FFW.
Affected Areas
Guayama County in Puerto Rico.
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.
Expected Conditions
At 12:34 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. Flash flooding is ongoing or expected to begin shortly. Hazard is flash flooding caused by thunderstorms, with source radar indicated.
Timeline
The warning is in effect until 3:15 AM AST on September 1, 2026.
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 (923 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to September 1, 2026.
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