Flood Advisory issued October 18 at 8:14AM ChST until October 18 at 12:15PM ChST by NWS Tiyan GU
Official severe-weather alerts, warning areas, and disaster updates.
expired · active · official-source
* WHAT...Urban area and small stream flooding caused by excessive rainfall is expected. * WHERE...Guam... * WHEN...Until 1215 PM ChST. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Water over roadways. Ponding of water in urban or other areas is occurring. Rises in rivers and small streams. * ADDITIONAL DETAILS... - At 811 AM ChST, Doppler radar and automated rain gauges indicated moderate to occasionally heavy rain due to showers and possible thunderstorms. This is causing urban and small stream flooding. - Additional rainfall amounts of 1 to 3 inches are expected over the area. This additional rain will result in minor flooding continuing. - http://www.weather.gov/safety/flood Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Please 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.
- Event time
- Source last updated
- Current version retrieved
- Provider
- NWS — active weather alerts (Storm)
- Location
- GU, US
- Severity
- Minor
- area
- Guam, GU
- event
- Flood Advisory
- onset
- 2026-10-18T08:14:00+10:00
- states
- ["GU"]
- urgency
- Expected
- certainty
- Likely
- effective
- 2026-10-18T08:14:00+10:00
- message id
- urn:oid:2.49.0.1.840.0.5c276330b373f56e86a58686b575dca50e560902.001.1
- references
- []
- instruction
- Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Please 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.
- message type
- Alert
- freshness minutes
- 60
Source use policy · US government work (17 U.S.C. 105)
Loading source locations…
Only locations and boundaries supplied by the source are shown. Refer to official instructions for current conditions.
Update history (1 recent revisions)
Planning home repairs or improvements?
Request a quote through DoorPlace USA. Service availability varies by location; some local services may be handled by independent contractors. Requests are reviewed before any provider is selected.
Request a quoteReport a correction · Related news · Fire information · Clips