WHGM70 PGUM 150539
MWWGUM

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

PMZ152>154-151945-
/O.CON.PGUM.TY.W.4004.000000T0000Z-000000T0000Z/
Rota Coastal Waters-Tinian Coastal Waters-Saipan Coastal Waters-
339 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 22 and 26 feet. For Tinian and Saipan,
  typhoon force winds of up to 95 kt with gusts to 115 kt. Seas are
  now subsiding and are between 26 to 35 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 are occurring at Rota,
  with typhoon winds of up to 95 kt currently over the northern
  waters of Tinian and Saipan. Winds are likely below typhoon force
  south of Tinian. 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.

&&

$$

PMZ151-151945-
/O.CON.PGUM.TR.W.4004.000000T0000Z-000000T0000Z/
/O.CON.PGUM.TY.A.4004.000000T0000Z-000000T0000Z/
Guam Coastal Waters-
339 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, typhoon conditions remain a
  remote possibility.

* 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.

&&

$$

Kleeschulte