Severe · Flood WatchActive alert

Flood Watch issued October 17 at 5:01AM ChST until October 18 at

Affecting Guam; Rota; Tinian; Saipan

In effect until: Oct 17, 2026, 8:30 AM

Guam; Rota; Tinian; Saipan

Possible impact zone; conditions develop through 8:30 AM.

You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.

See it on the live map View official source

Read the original bulletin (official text)

* 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

Free. In your language.

Get the next alert for your area before it matters.

Alert data: U.S. National Weather Service / NOAA · Translation: WeatherTranslate™

Flood Watch issued October 17 at 5:01AM ChST until October 18 at

Get the next alert for your area before it matters.

Get alerts in your language