FZMY70 PGUM 220216 MWSGUM Marine Weather Statement National Weather Service Tiyan GU 1213 PM ChST Mon Dec 22 2025 PMZ151-220315- 1213 PM ChST Mon Dec 22 2025 ...A STRONG THUNDERSTORM OVER THE WATERS... A Marine Weather Statement has been issued for the following areas... Southern and southwestern Guam Coastal Waters... At 1204 PM ChST, Doppler radar indicated strong thunderstorms, capable of producing winds to around 30 knots and occasional to frequent lightning strikes. These thunderstorm were located over southern Guam waters moving southwest at 20 knots. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners can expect gusty winds to around 30 knots, locally higher waves, and lightning strikes. Boaters should seek safe harbor immediately until this storm passes. && LAT...LON 1328A 21541A 1285A 21523A 1260A 21559A 1263A 21566A 1276A 21585A 1312A 21603A 1328A 21605A $$ PB