Flood Watch issued October 17 at 5:01AM ChST until October 18 at 4:00PM ChST by NWS Tiyan GU
Official severe-weather alerts, warning areas, and disaster updates.
expired · active · official-source
* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...Guam, Rota, Saipan and Tinian. * WHEN...Through Sunday afternoon. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. Storm drains and ditches may become clogged with debris. Extensive street flooding and flooding of creeks and rivers are possible. * ADDITIONAL DETAILS... - Tropical Storm Champi (29W) will drop copious amounts of rain over Sunday and Monday...although an unexpected southward shift in track will reduce these somewhat. Tinian and Saipan will see around 4 to 6 inches, Rota could receive 10 to 15 inches, and Guam might get 12 to 20 inches. - http://www.weather.gov/safety/flood You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.
- Event time
- Source last updated
- Current version retrieved
- Provider
- NWS — active weather alerts (Storm)
- Location
- US
- Severity
- Severe
- area
- Guam; Rota; Tinian; Saipan
- event
- Flood Watch
- onset
- 2026-10-17T05:01:00+10:00
- states
- ["GU","MP"]
- urgency
- Future
- certainty
- Possible
- effective
- 2026-10-17T05:01:00+10:00
- message id
- urn:oid:2.49.0.1.840.0.fd4402cac5e6279d4fe881da4c732b2b0a8dc3b5.001.1
- references
- ["urn:oid:2.49.0.1.840.0.aeec7462e195e7df5d13bb74efabdf619edb5009.001.1"]
- instruction
- You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.
- message type
- Update
- location basis
- Approximate: centers of the NWS zones listed in the alert
- freshness minutes
- 60
Source use policy · US government work (17 U.S.C. 105)
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Locations and boundaries are as supplied by each source. Area statistics without an exact location are placed at the Census center of their city, county or ZIP code and labeled approximate. Refer to official instructions for current conditions.
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