114
WHGM70 PGUM 211720
MWWGUM
URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE TIYAN GU
320 AM CHST SAT NOV 22 2025
PMZ151>154-220800-
/O.CON.PGUM.SC.Y.0052.000000T0000Z-251122T0800Z/
GUAM COASTAL WATERS-ROTA COASTAL WATERS-TINIAN COASTAL WATERS-
SAIPAN COASTAL WATERS-
320 AM CHST SAT NOV 22 2025
..SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM CHST SATURDAY
* WHAT...EAST WINDS 15 TO 25 KT AND SEAS 7 TO 10 FEET.
* WHERE...MARIANAS COASTAL WATERS.
* WHEN...UNTIL 6 PM CHST SATURDAY.
* IMPACTS...CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT.
* ADDITIONAL DETAILS...A COMBINATION OF ELEVATED EASTERLY SWELL,
SECONDARY NORTHERLY SWELL AND MUCH HIGHER LOCALIZED WIND WAVES, IS
PRODUCING SEA CONDITIONS HAZARDOUS TO SMALL CRAFT LASTING THROUGH
AT LEAST SATURDAY AFTERNOON. ONCE THE PRESSURE GRADIENT BETWEEN THE
TROPICS AND THE MID-LATITUDES DECREASES, WIND WAVES AND EASTERLY
SWELL WILL BEGIN TO DIMINISH, ALLOWING SEAS TO FALL BELOW 10 FEET
BY TONIGHT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER VESSELS,
SHOULD AVOID BOATING IN HAZARDOUS CONDITIONS.
MONTVILA
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