Skip to main content
AREAZINENotices · US CA UK AU

NWS Tiyan GUFA.A 0006October 3, 2026

Flood Watch: Guam, Rota, Tinian and 1 more, GU and MP

The National Weather Service office in Tiyan issued a flood watch for Guam, Rota, Tinian and 1 more in Guam, Northern Mariana Islands, which was in force until 4:00 a.m. local time on October 5. It was the 6th areal flood watch the NWS office in Tiyan issued in 2026.

ExpiredWatch

Issued5:30 p.m. UTC+10, October 3, 2026
In force5:30 p.m. UTC+10, October 3, 2026
Expired4:00 a.m. UTC+10, October 5, 2026

In force for 34.5 hours; it has expired. The agency may have replaced it with a new notice.

The notice

Issued by
National Weather Service, Tiyan GU
Area
Guam, Rota, Tinian and 1 more
State
Guam
Level
Watch
Issued
5:30 p.m. UTC+10, October 3, 2026
Expires
4:00 a.m. UTC+10, October 5, 2026
CAP severity, certainty, urgency
Severe, Possible, Future
VTEC event
PGUM FA.A 0006
Official source
National Weather Service: the notice at its source

Every warning type in GuamFlood Watch: what it means, and the states that get the most

Source: National Weather Service: the notice at its source. AreaZine rebuilds this page from the agency's record; the agency's page is the one to act on. A U.S. Government work, in the public domain.

The notice as issued

* WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...Guam, Rota, Saipan and Tinian. * WHEN...Through late Sunday night. * 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. * ADDITIONAL DETAILS... - Typhoon Choi-wan (26W) is steadily moving northeast and away from the Marianas. To the south of Choi-wan, surging monsoon inflow will maintain wet conditions through Sunday, resulting in 3 to 5 inches of rain for Guam and Rota, and 4 to 6 inches for Tinian and Saipan during the Watch period. - http://www.weather.gov/safety/flood

What the agency told people to do

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

Source: National Weather Service: the notice at its source. The text is the agency's, unedited. A U.S. Government work, in the public domain.

The record around this notice