


Marine Weather Message
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
Versions:
1
762 WHGM70 PGUM 180626 MWWGUM URGENT - MARINE WEATHER MESSAGE National Weather Service Tiyan GU 426 PM ChST Mon Aug 18 2025 PMZ151-152-182200- /O.NEW.PGUM.SC.Y.0042.250818T1200Z-250819T0000Z/ Guam Coastal Waters-Rota Coastal Waters- 426 PM ChST Mon Aug 18 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO 10 AM CHST TUESDAY... * WHAT...Winds 15 to 25 kt. Occasional gusts to 35 kt near heavier showers. * WHERE...Guam and Rota Coastal Waters. * WHEN...From 10 PM this evening to 10 AM ChST Tuesday. * IMPACTS...Conditions will be hazardous to small craft. * ADDITIONAL DETAILS...A tropical disturbance is expected to move south of Guam overnight, producing a period of locally heavy showers and strong gusts across the region, especially for Guam and Rota waters. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid boating in hazardous conditions. && $$ IC