Flash Flood Warning Issued for Southern Guam; Heavy Rain Expected Through Saturday Afternoon
This alert is no longer in effect.
NOAA issued it on April 6, 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 Southern Guam until 1:45 PM ChST as radar indicates heavy rain and ongoing flooding across the region.
Read this weather record in 30 seconds
- Record type
- Flash Flood Warning
- Affected area
- Southern Guam
- Issued
- April 6, 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 Southern Guam.
Alert Details
The National Weather Service in Tiyan GU has issued a Flash Flood Warning for Southern Guam. The alert was issued at 11:59 AM ChST on March 7 and remains in effect as flash flooding is already occurring in the region. The alert level is classified as severe with immediate urgency.
Affected Areas
The warning specifically covers Southern Guam. Locations expected to experience flash flooding include:
- Yona
- Talofofo
- Inarajan
- Asan
- Merizo
- Piti
- Santa Rita
- Umatac
What You Should Do
Residents are urged to take immediate precautions to ensure their safety. The National Weather Service advises: "Turn around, don't drown when encountering flooded roads." Most flood-related deaths occur in vehicles. Residents should avoid small creeks, streams, urban areas, and streets with poor drainage or low-lying geography.
Expected Conditions
Doppler radar has indicated heavy rain across the warned area. Meteorologists expect additional rainfall amounts of 2 to 4 inches are possible. The primary hazards include flash flooding of urban areas, streets, and small creeks. Flash flooding is already reported as occurring at the time of the alert issuance.
Timeline
The Flash Flood Warning is effective immediately as of 11:59 AM ChST and is scheduled to expire at 1:45 PM ChST on March 7, 2026.
Original source: NOAA Official Notice ↗
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