Flash Flood Watch
Issued by NWS Tiyan, Guam

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WGMY60 PGUM 291716
FFAGUM

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Tiyan GU
316 AM ChST Mon Jun 30 2025

MPZ001-291830-
/O.CAN.PGUM.FA.A.0001.000000T0000Z-250629T2000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Rota-
316 AM ChST Mon Jun 30 2025

...FLOOD WATCH IS CANCELLED...

The Flash Flood Watch is cancelled for Rota.

The flash flooding threat has ended. Therefore, the Flash Flood
Watch is being cancelled.

$$

GUZ001-300815-
/O.EXT.PGUM.FA.A.0001.000000T0000Z-250701T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Guam-
316 AM ChST Mon Jun 30 2025

...FLOOD WATCH NOW IN EFFECT THROUGH TUESDAY AFTERNOON...

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

* WHERE...Guam.

* WHEN...Through Tuesday 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.

* ADDITIONAL DETAILS...
  - Between 4 and 8 inches of rain has fallen over the last few
    days across Guam. A monsoon disturbance well northeast of the
    region will allow for a wet southwesterly pattern to develop
    across the region over the next couple of days, bringing
    higher likelihood for locally heavy showers. An additional 2
    to 4 inches of rain will be possible through Tuesday
    afternoon, which could lead to flash flooding.
  - 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.

&&

$$

Williams