Flash Flood Warning Issued for Central Guam
This alert is no longer in effect.
NOAA issued it on August 30, 2026, 9 days 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 Tiyan GU has issued a Flash Flood Warning for Central Guam until 6:30 PM ChST due to heavy rain and ongoing flash flooding.
Read this weather record in 30 seconds
- Record type
- Flash Flood Warning
- Affected area
- Central Guam
- Issued
- August 30, 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 9 days ago; use the issuing agency's live warning service for current conditions in Central Guam.
Alert Details
Flash Flood Warning issued by NWS Tiyan GU. Effective from August 30 at 5:33 PM ChST until August 30 at 6:30 PM ChST. Severity: Severe. Urgency: Immediate. Certainty: Likely.
Affected Areas
Central Guam, including Dededo, Tamuning, Mangilao, Chalan Pago-Ordot, Barrigada, Mongmong-Toto-Maite and Sinajana.
What You Should Do
Turn around, don't drown when encountering flooded roads. Move to higher ground now. Act quickly to protect your life. Be aware of your surroundings and do not drive on flooded roads.
Expected Conditions
At 5:33 PM ChST, Doppler radar indicated heavy rain across the warned area. Additional rainfall amounts of 2 to 3 inches are possible. Flash flooding is ongoing or expected to begin shortly. Hazard: Flash flooding caused by heavy rain.
Timeline
Alert effective August 30 at 5:33 PM ChST. Expires and ends August 30 at 6:30 PM ChST.
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 (893 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to August 30, 2026.
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