WGMY60 PGUM 141642
FFAGUM

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Tiyan GU
242 AM ChST Wed Apr 15 2026

GUZ001-MPZ001>003-151800-
/O.EXT.PGUM.FA.A.0003.000000T0000Z-260415T1800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Guam-Rota-Tinian-Saipan-
242 AM ChST Wed Apr 15 2026

...FLOOD WATCH NOW IN EFFECT THROUGH LATE TONIGHT...

* WHAT...Flash flooding caused by excessive rainfall continues to be
  possible.

* WHERE...Guam, Rota, Saipan and Tinian.

* WHEN...Through late tonight.

* IMPACTS...Excessive runoff may result in flooding of rivers,
  creeks, streams, and other low-lying and flood-prone locations.

* ADDITIONAL DETAILS...
  - Typhoon Sinlaku is starting to move away from Tinian and
    Saipan to the northwest. rain bands south of Sinlaku will
    continue to bring periods of heavy rain across the islands.

    - Based on microwave satellite estimates and model guidance,
    additional rainfall of 10 to 18 inches is possible for Tinian
    and Saipan. For Guam and Rota, 5 to 10 inches of additional
    rainfall is possible over the next 24 hours.

  - Http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

JS