Guam, Northern Mariana Islands Severe Flood Watch | Effective 10/15/2026 21:31

Headline: 
Flood Watch issued October 16 at 2:31PM ChST until October 18 at 4:00PM ChST by NWS Tiyan GU
Event: 
Flood Watch
Urgency: 
Future
Effective: 
October 15, 2026 - 9:31pm
Expires: 
October 16, 2026 - 10:45pm
Description: 
* 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 is approaching the Marianas and will bring torrential rain Saturday night and Sunday at least. Total rainfall accumulations of 12 to 20 inches are possible for Guam, 10 to 18 inches for Rota and 8 to 12 inches for Tinian and Saipan. This could cause flooding problems in poor drainage and flood prone areas. - 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; Tinian; Saipan
Forcast Office: 
NWS Tiyan GU
Sender: 
w-nws.webmaster@noaa.gov