WHGM70 PGUM 151148
MWWGUM

URGENT - MARINE WEATHER MESSAGE
National Weather Service Tiyan GU
948 PM ChST Wed Apr 15 2026

PMZ152>154-160200-
/O.CON.PGUM.TY.W.4004.000000T0000Z-000000T0000Z/
Rota Coastal Waters-Tinian Coastal Waters-Saipan Coastal Waters-
948 PM ChST Wed Apr 15 2026

...TYPHOON WARNING REMAINS IN EFFECT...

* WHAT...Typhoon Warning. For Rota, tropical storm force winds of
  35 to 50 kt, with gusts to 70 kt. Seas will continue to slowly
  subside and are between 21 and 25 feet. For Tinian and Saipan,
  tropical storm winds of up to 60 kt with gusts to 85 kt. Seas are
  now subsiding and are between 25 to 29 feet.

* WHERE...Rota, Tinian, and Saipan Coastal Waters.

* WHEN...Through at least Thursday afternoon.

* IMPACTS...Conditions will be catastrophic for small craft and
  large vessels. Remain in safe harbor.

* ADDITIONAL DETAILS...Tropical storm winds of 50 kt are occurring at
  Rota, and winds of 60 kt are currently over the northern waters of
  Tinian and Saipan. Winds and seas will continue to very slowly
  decrease over the next 24 hours. Seas will be highest over the
  northern portions of the waters.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A typhoon warning means sustained winds of 64 kt or 74 mph or
greater are expected or occurring.

&&

$$

PMZ151-160200-
/O.CON.PGUM.TR.W.4004.000000T0000Z-000000T0000Z/
/O.CON.PGUM.TY.A.4004.000000T0000Z-000000T0000Z/
Guam Coastal Waters-
948 PM ChST Wed Apr 15 2026

...TROPICAL STORM WARNING REMAINS IN EFFECT...
...TYPHOON WATCH REMAINS IN EFFECT...

* WHAT...For the Tropical Storm Warning, southwest winds 30 to
  40 kt with gusts to 55 kt. Seas are slowly subsiding, but remain
  around 15 to 22 feet. For the Typhoon Watch, damaging winds remain
  possible.

* WHERE...Guam Coastal Waters.

* WHEN...Through at least Wednesday night.

* IMPACTS...Damaging winds will maintain hazardous seas which
  could capsize or damage vessels and reduce visibility. Conditions
  will be dangerous for small craft and hazardous for large
  vessels. Remain in safe harbor.

* ADDITIONAL DETAILS...Tropical storm winds are occurring, with
  the strongest winds and highest seas over the northern waters.
  Winds will continue to slowly subside through tonight.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A tropical storm warning means sustained winds of 34 to 63 kt or
39 to 73 mph are expected or occurring.

&&

$$

Williams