FZMY70 PGUM 170655 MWSMY - PGUM 000000 MWSGUM MARINE WEATHER STATEMENT NATIONAL WEATHER SERVICE TIYAN GU 451 PM CHST THU MAY 17 2018 PMZ151-170815- 451 PM CHST THU MAY 17 2018 ...HEAVY THUNDERSTORMS OVER WATERS WEST TO NORTH OF GUAM... THE AREAS AFFECTED INCLUDE... GUAM COASTAL WATERS... AT 451 PM CHST...DOPPLER RADAR INDICATED STRONG THUNDERSTORMS WITH FREQUENT LIGHTNING AND HEAVY DOWNPOURS...CAPABLE OF PRODUCING WINDS TO AROUND 30 KNOTS. THESE THUNDERSTORMS WERE LOCATED 7 NM NORTH OF RITIDIAN BUOY AND MOVING SLOWLY SOUTHWARD. PRECAUTIONARY/PREPAREDNESS ACTIONS... MARINERS CAN EXPECT GUSTY WINDS TO AROUND 30 KNOTS...LOCALLY HIGHER WAVES...FREQUENT LIGHTNING...AND HEAVY DOWNPOURS. BOATERS SHOULD SEEK SAFE HARBOR IMMEDIATELY UNTIL THESE STORMS PASS. IF LIGHTNING IS OCCURRING NEAR YOU...STAY BELOW DECK IF POSSIBLE...AND KEEP AWAY FROM UNGROUNDED METAL OBJECTS. && LAT...LON 1401 14470 1387 14494 1349 14472 1363 14457 $$ AYDLETT