295
WHGM70 PGUM 100711
MWWGUM
URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE TIYAN GU
511 PM CHST MON AUG 10 2026
PMZ151-152-101900-
/O.CON.PGUM.SC.Y.0055.000000T0000Z-260810T1900Z/
GUAM COASTAL WATERS-ROTA COASTAL WATERS-
511 PM CHST MON AUG 10 2026
..SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 5 AM CHST TUESDAY
* WHAT...WEST WIND 15 TO 25 KT AND SEAS 8 TO 10 FT.
* WHERE...GUAM AND ROTA COASTAL WATERS.
* WHEN...UNTIL 5 AM CHST TUESDAY.
* IMPACTS...CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT.
* ADDITIONAL DETAILS...MODERATE TO STRONG WESTERLIES WILL PREVAIL
ACROSS THE MARIANAS TONIGHT, WILL DROP TO GENTLE TO FRESH IN
GUAM AND ROTA COASTAL WATERS TUESDAY, ALLOWING SEAS TO FALL
BELOW 10 FEET. AS SUCH, THE SMALL CRAFT ADVISORY IS EXPECTED TO
EXPIRE LATE TONIGHT FOR GUAM AND ROTA WATERS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER VESSELS,
SHOULD AVOID BOATING IN HAZARDOUS CONDITIONS.
PMZ153-154-102000-
/O.CON.PGUM.SC.Y.0055.000000T0000Z-260813T0700Z/
TINIAN COASTAL WATERS-SAIPAN COASTAL WATERS-
511 PM CHST MON AUG 10 2026
..SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 5 PM CHST THURSDAY
* WHAT...WEST WINDS 15 TO 25 KT WITH GUSTS UP TO 30 KT AND SEAS 8
TO 10 FEET.
* WHERE...TINIAN AND SAIPAN COASTAL WATERS.
* WHEN...UNTIL 5 PM CHST THURSDAY.
* IMPACTS...CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT.
* ADDITIONAL DETAILS...VARIOUS SIGNIFICANT NORTHERLY SWELLS AND
LARGE LOCALIZED WIND WAVES, ARE EXPECTED TO CONTINUE PRODUCING
SEA CONDITIONS HAZARDOUS TO SMALL CRAFT THROUGH AT LEAST
THURSDAY AFTERNOON. HOWEVER, SEAS MAY BRIEFLY DROP BELOW 10 FEET
TUESDAY NIGHT AS WINDS SLOW AND SOME SWELLS DECREASE, BEFORE
ANOTHER RESURGENCE IN THE MONSOON SURGE BRINGS SEAS BACK UP
WEDNESDAY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER VESSELS,
SHOULD AVOID BOATING IN HAZARDOUS CONDITIONS.
MONTVILA
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