Guam, Northern Mariana Islands Severe Flood Watch | Effective 10/17/2026 11:12

Headline: 
Flood Watch issued October 18 at 4:12AM ChST until October 18 at 6:00PM ChST by NWS Tiyan GU
Event: 
Flood Watch
Urgency: 
Future
Effective: 
October 17, 2026 - 11:12am
Expires: 
October 17, 2026 - 11:00pm
Description: 
* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...Guam, Rota. * WHEN...Through this 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... - Typhoon Champi (29W) will produce locally heavy rainfall late tonight and Sunday, though expected rainfall has decreased slightly as the larger rainbands remain mainly south and east of the center of Champi. Rota could receive 3 to 5 inches, and Guam might get 4 to 8 inches. - http://www.weather.gov/safety/flood
Instruction: 
You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.
Area Description: 
Guam; Rota
Forcast Office: 
NWS Tiyan GU
Sender: 
w-nws.webmaster@noaa.gov