852
WHGM70 PGUM 191908
MWWGUM
URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE TIYAN GU
508 AM CHST FRI MAR 20 2026
PMZ151>154-200700-
/O.CON.PGUM.SC.Y.0030.000000T0000Z-260320T0700Z/
GUAM COASTAL WATERS-ROTA COASTAL WATERS-TINIAN COASTAL WATERS-
SAIPAN COASTAL WATERS-
508 AM CHST FRI MAR 20 2026
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 5 PM CHST THIS
AFTERNOON...
* WHAT...SEAS 8 TO 10 FEET.
* WHERE...MARIANAS COASTAL WATERS.
* WHEN...UNTIL 5 PM CHST THIS AFTERNOON.
* IMPACTS...CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT.
* ADDITIONAL DETAILS...BUILDING NORTHEAST TO EAST SWELL,
REINFORCED BY DIMINISHING LONG-PERIOD NORTH TO NORTHEAST SWELLS
FROM DISTANT LOW PRESSURE SYSTEMS WILL CONTINUE TO PRODUCE
HAZARDOUS SEAS UP TO 10 FEET OVER MARIANAS COASTAL WATERS
THROUGH AT LEAST THIS AFTERNOON. OVERALL, THE LONG-PERIOD SWELLS
ARE GRADUALLY SUBSIDING, BUT THE BUILDING NORTHEAST TO EAST
SWELL WILL KEEP SEAS ELEVATED, POTENTIALLY REMAINING AT
HAZARDOUS LEVELS OF 8 TO 10 FEET OVER EASTERN COASTAL WATERS OF
TINIAN AND SAIPAN THROUGH THE WEEKEND. MODERATE TO FRESH WINDS
OUT OF THE NORTHEAST ARE EXPECTED THROUGH EARLY NEXT WEEK.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER
VESSELS, SHOULD AVOID BOATING IN HAZARDOUS CONDITIONS.
DECOU
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