210
WHGM70 PGUM 080654
MWWGUM
URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE TIYAN GU
454 PM CHST SAT AUG 8 2026
PMZ151-152-082100-
/O.EXT.PGUM.SC.Y.0055.000000T0000Z-260810T1900Z/
GUAM COASTAL WATERS-ROTA COASTAL WATERS-
454 PM CHST SAT AUG 8 2026
..SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 5 AM CHST TUESDAY
* WHAT...WEST WINDS 15 TO 25 KT WITH GUSTS UP TO 35 KT AND SEAS
8 TO 11 FEET.
* 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 PREVAIL
ACROSS THE MARIANAS AS ANOTHER RESURGENCE IN THE MONSOON BUILDS
OVER THE NORTHERN CNMI, LIKELY TO MAINTAIN MODERATE TO STRONG
WINDS THROUGH THE MIDDLE OF NEXT WEEK, WITH THE STRONGEST WINDS
EXPECTED OVER TINIAN AND SAIPAN WATERS. COMBINED SEAS OF 8 TO 11
FEET ARE EXPECTED OVER THE NEXT FEW DAYS, REMAINING HAZARDOUS
TO SMALL CRAFT THROUGH AT LEAST EARLY TUESDAY MORNING, AND THE
SMALL CRAFT ADVISORY WAS EXTENDED UNTIL 5 AM CHST TUESDAY. SEAS
LOOK TO FALL BELOW HAZARDOUS LEVELS FOR GUAM AND ROTA BY MIDWEEK
AS SWELLS AND WIND WAVES RELAX.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER
VESSELS, SHOULD AVOID BOATING IN HAZARDOUS CONDITIONS.
PMZ153-154-082100-
/O.EXT.PGUM.SC.Y.0055.000000T0000Z-260813T0700Z/
TINIAN COASTAL WATERS-SAIPAN COASTAL WATERS-
454 PM CHST SAT AUG 8 2026
..SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 5 PM CHST THURSDAY
* WHAT...WEST WINDS 15 TO 25 KT WITH GUSTS UP TO 35 KT AND SEAS
8 TO 11 FEET.
* WHERE...TINIAN AND SAIPAN COASTAL WATERS.
* WHEN...UNTIL 5 PM CHST THURSDAY.
* IMPACTS...CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT.
* ADDITIONAL DETAILS...MODERATE TO STRONG WESTERLIES PREVAIL
ACROSS THE MARIANAS AS ANOTHER RESURGENCE IN THE MONSOON BUILDS
OVER THE NORTHERN CNMI, LIKELY TO MAINTAIN MODERATE TO STRONG
WINDS THROUGH THE MIDDLE OF NEXT WEEK OVER TINIAN AND SAIPAN
WATERS. COMBINED SEAS OF 8 TO 11 FEET ARE EXPECTED TO CONTINUE
THROUGH MUCH OF THE COMING WEEK, REMAINING HAZARDOUS TO SMALL
CRAFT THROUGH AT LEAST THURSDAY AFTERNOON AS THE SOUTHERN EDGE
OF THE MONSOON SURGE PERSISTS OVERHEAD. SO, THE SMALL CRAFT
ADVISORY WAS EXTENDED FOR TINIAN AND SAIPAN WATERS THROUGH 5 PM
CHST THURSDAY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER
VESSELS, SHOULD AVOID BOATING IN HAZARDOUS CONDITIONS.
DECOU
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