WHGM70 PGUM 211826

MWWGUM



URGENT - MARINE WEATHER MESSAGE

National Weather Service Tiyan GU

426 AM ChST Sun Mar 22 2026



PMZ151>154-220700-

/O.CON.PGUM.SC.Y.0031.000000T0000Z-260322T0700Z/

Guam Coastal Waters-Rota Coastal Waters-Tinian Coastal Waters-

Saipan Coastal Waters-

426 AM ChST Sun Mar 22 2026



...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 5 PM CHST THIS

AFTERNOON...



* WHAT...Northeast winds 15 to 20 kt with frequent gusts up to 25 kt

  and seas 8 to 10 feet expected. Frequent gusts increasing to 30 kt

  Monday and Monday night.



* WHERE...Guam and Rota Coastal Waters.



* WHEN...Until 5 PM ChST this afternoon.



* IMPACTS...Conditions will be hazardous to small craft.



* ADDITIONAL DETAILS...Elevated northeast to east swell and wind

  waves, reinforced by diminishing long-period north to northeast

  swell will produce seas up to 10 feet within the eastern Marianas

  coastal waters. Combined seas may briefly diminish tonight,

  increasing once more Monday and Monday night as the northeast swell

  and wind waves are reinforced by a building trade-wind surge. An

  extension or another issuance of a Small Craft Advisory will likely

  be needed for hazardous conditions on Monday and Monday night.



PRECAUTIONARY/PREPAREDNESS ACTIONS...



Inexperienced mariners, especially those operating smaller

vessels, should avoid boating in hazardous conditions.



&&



$$



Stanko