290
WHGM70 PGUM 090606
MWWGUM
URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE TIYAN GU
406 PM CHST THU JUL 9 2026
PMZ151>154-092015-
/O.EXT.PGUM.SC.Y.0049.000000T0000Z-260710T0600Z/
GUAM COASTAL WATERS-ROTA COASTAL WATERS-TINIAN COASTAL WATERS-
SAIPAN COASTAL WATERS-
406 PM CHST THU JUL 9 2026
..SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 4 PM CHST FRIDAY
* WHAT...SEAS 7 TO 10 FEET.
* WHERE...MARIANAS COASTAL WATERS.
* WHEN...UNTIL 4 PM CHST FRIDAY.
* IMPACTS...CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT.
* ADDITIONAL DETAILS...SIGNIFICANT WEST TO SOUTHWEST SWELLS
CONTINUE TO EMANATE FROM SUPER TYPHOON BAVI (09W) AND ITS
TRAILING MONSOON PATTERN, MAINTAINING SEAS HAZARDOUS TO SMALL
CRAFT. ALTIMETRY AND TANAPAG BUOY DATA INDICATE COMBINED SEAS
SUSTAINING AT AROUND 9 TO 10 FEET OVER WESTERN COASTAL WATERS OF
THE MARIANAS AS SEAS TAKE LONGER TO RELAX BELOW HAZARDOUS LEVELS
THAN PREVIOUSLY EXPECTED. SO THE SMALL CRAFT ADVISORY IS
EXTENDED THROUGH FRIDAY AFTERNOON, AFTER WHICH SEAS MAY FALL
BELOW HAZARDOUS LEVELS OF 10 FEET.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER
VESSELS, SHOULD AVOID BOATING IN HAZARDOUS CONDITIONS.
DECOU
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