Flash Flood Warning Issued for Humacao and Naguabo in Puerto Rico
This alert is no longer in effect.
NOAA issued it on April 7, 2026, 4 months ago. Warnings of this kind stay in effect for hours to a few days, so this page is a historical record of what was issued, not a current warning. For conditions where you are right now, check weather.gov (US), weather.gc.ca (Canada), the Met Office (UK), or the Bureau of Meteorology (Australia).
Areazine synthesizes this NWS weather alert directly from NOAA's official public data feed. See our methodology for full source attribution and refresh cadence.
A Flash Flood Warning is in effect for Northeastern Humacao and Southwestern Naguabo in Puerto Rico until 6:00 AM AST on April 7, 2026, due to heavy rainfall causing immediate flooding risks.
Read this weather record in 30 seconds
- Record type
- Flash Flood Warning
- Affected area
- Eastern Puerto Rico
- Issued
- April 7, 2026
- Issuing authority
- NWS National Office
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: historical. It was issued 4 months ago; use the issuing agency's live warning service for current conditions in Eastern Puerto Rico.
Flash Flood Warning in Puerto Rico
Alert Details
A Flash Flood Warning has been issued by the National Weather Service in San Juan, PR. It is effective from 5:03 AM AST on April 7, 2026, until 6:00 AM AST on the same day.
Affected Areas
The warning affects Northeastern Humacao County and Southwestern Naguabo County in Puerto Rico.
What You Should Do
Turn around and do not drown when encountering flooded roads. Do not drive on flooded roads and be aware of your surroundings.
Expected Conditions
Heavy rain has caused between 1 and 2 inches of rainfall, with an additional 1 to 2 inches possible. Flash flooding is occurring along the Rio Blanco River, impacting small creeks, streams, urban areas, highways, streets, and underpasses.
Timeline
The alert is effective from 5:03 AM AST on April 7, 2026, and ends at 6:00 AM AST on April 7, 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 (868 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to April 7, 2026.
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Common questions about this NWS weather alert.