018
WHGM70 PGUM 230651
MWWGUM
URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE TIYAN GU
451 PM CHST SUN AUG 23 2026
PMZ151>154-232100-
/O.EXT.PGUM.SC.Y.0062.000000T0000Z-260824T0700Z/
GUAM COASTAL WATERS-ROTA COASTAL WATERS-TINIAN COASTAL WATERS-
SAIPAN COASTAL WATERS-
451 PM CHST SUN AUG 23 2026
..SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 5 PM CHST MONDAY
* WHAT...SEAS 8 TO 10 FEET EXPECTED.
* WHERE...MARIANAS COASTAL WATERS.
* WHEN...UNTIL 5 PM CHST MONDAY.
* IMPACTS...CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT.
* ADDITIONAL DETAILS...COMBINED SEAS OF 7 TO 9 FT TONIGHT WILL
INCREASE TO 8 TO 10 FT BY MONDAY MORNING DUE TO AN ELEVATED
SOUTHWEST SWELL FROM THE REMNANT MONSOON SURGE AND TROPICAL
DEPRESSION 19W, CURRENTLY WELL NORTHWEST OF YAP ISLAND. IN
ADDITION, CONVECTIVE GUSTS ASSOCIATED WITH HEAVY SHOWERS WILL GIVE
WAY TO CHOPPY SEAS. CONDITIONS MAY BEGIN TO SUBSIDE MONDAY NIGHT,
SO THE ADVISORY WILL BE REASSESSED BY THEN.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER
VESSELS, SHOULD AVOID BOATING IN HAZARDOUS CONDITIONS.
MESA
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