Flash Flood Warning Issued for Guam
This alert is no longer in effect.
NOAA issued it on April 14, 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 Guam from 12:25 PM ChST until 9:00 PM ChST on April 14, 2026, due to heavy rainfall causing potential flooding.
Read this weather record in 30 seconds
- Record type
- Flash Flood Warning
- Affected area
- Guam, GU
- Issued
- April 14, 2026
- Issuing authority
- NWS Tiyan GU
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 Guam, GU.
Flash Flood Warning in Guam
Alert Details
The National Weather Service in Tiyan has issued a Flash Flood Warning for Guam. This alert is effective from 12:25 PM ChST until 9:00 PM ChST on April 14, 2026.
Affected Areas
The warning affects Guam, including specific locations such as Dededo, Tamuning, Yigo, Mangilao, Chalan Pago-Ordot, Barrigada, Yona, Hagatna Heights, Andersen AFB, Talofofo, Mongmong-Toto-Maite, Sinajana, Inarajan, Asan, Merizo, Piti, Santa Rita, and Umatac.
What You Should Do
Turn around, don't drown when encountering flooded roads. 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
Heavy rain is indicated, with 2 to 4 inches already fallen. The expected rainfall rate is 1 to 2 inches in 1 hour, and additional rainfall amounts of 2 to 4 inches are possible. This will cause flash flooding in small creeks and streams, urban areas, streets, and other poor drainage and low-lying areas.
Timeline
The alert is effective from 12:25 PM ChST on April 14, 2026, and will expire at 9:00 PM ChST on the same day.
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 (1,190 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to April 14, 2026.
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Common questions about this NWS weather alert.