


Marine Weather Message
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
325 WHGM70 PGUM 140525 MWWGUM URGENT - MARINE WEATHER MESSAGE National Weather Service Tiyan GU 325 PM ChST Fri Mar 14 2025 PMZ151>154-141930- /O.EXT.PGUM.SC.Y.0024.000000T0000Z-250315T0700Z/ Guam Coastal Waters-Rota Coastal Waters-Tinian Coastal Waters- Saipan Coastal Waters- 325 PM ChST Fri Mar 14 2025 ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 5 PM CHST SATURDAY... * WHAT...Seas 9 to 12 feet. * WHERE...Marianas Coastal Waters. * WHEN...Until 5 PM ChST Saturday. * IMPACTS...Conditions will be hazardous to small craft. * ADDITIONAL DETAILS...A significant long-period northeast swell is moving through the Marianas, which, in combination with northeast trade swell and elevated wind waves, is contributing to seas hazardous to small craft. As the long-period swell dissipates, seas are expected to fall below hazardous levels of 10 feet by Saturday night across Marianas waters. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid boating in hazardous conditions. && $$ DeCou