Flash Flood Warning issued for Mayaguez County, Puerto Rico

Source: NOAA · Mayaguez County, Puerto Rico

This alert is no longer in effect.

NOAA issued it on June 5, 2026, 2 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.

NWS San Juan PR has issued a Flash Flood Warning for Mayaguez County until 5:00 PM AST on May 23, 2026, due to thunderstorms producing heavy rain.

Read this weather record in 30 seconds

Record type
Flash Flood Warning
Affected area
Mayaguez County, Puerto Rico
Issued
June 5, 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: historical. It was issued 2 months ago; use the issuing agency's live warning service for current conditions in Mayaguez County, Puerto Rico.

Alert Details

Flash Flood Warning issued by NWS San Juan PR. Effective from 2:01 PM AST on May 23, 2026, until 5:00 PM AST on May 23, 2026. Severity: Severe. Urgency: Immediate. Certainty: Likely.

Affected Areas

Mayaguez County in Puerto Rico.

What You Should Do

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles.

Expected Conditions

At 2:01 PM AST, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 2 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: Flash flooding caused by thunderstorms. Source: Radar. Impact: Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas.

Timeline

Alert effective May 23, 2026, from 2:01 PM AST to 5:00 PM AST.

Original source: NOAA Official Notice ↗

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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.

Frequently Asked Questions

Common questions about this NWS weather alert.

What is this NWS weather alert about?
NWS San Juan PR has issued a Flash Flood Warning for Mayaguez County until 5:00 PM AST on May 23, 2026, due to thunderstorms producing heavy rain.
Which agency issued this alert?
This alert was issued by NOAA. The original notice is available at the source link at the bottom of this article.
How severe is this alert?
This alert is classified as "high" severity. Take precautions and monitor for updates.
What area is affected?
This alert affects Mayaguez County, Puerto Rico. Check with NOAA for the most current geographic scope.
Where can I find more Weather Alerts updates?
Browse the full Weather Alerts feed on Areazine at areazine.com/weather/ for the latest updates from NOAA and other agencies.