433
WHHW70 PHFO 131502
MWWHFO
URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE HONOLULU HI
502 AM HST THU AUG 13 2026
PHZ122-140415-
/O.NEW.PHFO.HU.A.3001.260813T1502Z-000000T0000Z/
/O.EXB.PHFO.SC.Y.0032.260814T0400Z-260815T0400Z/
BIG ISLAND WINDWARD WATERS-
502 AM HST THU AUG 13 2026
..HURRICANE WATCH IN EFFECT
...SMALL CRAFT ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 6 PM
HST FRIDAY...
* WHAT...FOR THE SMALL CRAFT ADVISORY, NORTHEAST WINDS 15 TO 25 KT
AND SEAS 7 TO 10 FEET EXPECTED. FOR THE HURRICANE WATCH,
HURRICANE CONDITIONS POSSIBLE.
* WHERE...BIG ISLAND WINDWARD WATERS.
* WHEN...FOR THE SMALL CRAFT ADVISORY, FROM 6 PM THIS EVENING TO 6
PM HST FRIDAY. FOR THE HURRICANE WATCH, 6 PM FRIDAY THROUGH 6 PM
SATURDAY.
* IMPACTS...EXTREMELY STRONG WINDS WILL CAUSE HAZARDOUS SEAS WHICH
WILL LIKELY CAPSIZE OR DAMAGE VESSELS AND SEVERELY REDUCE
VISIBILITY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MARINERS SHOULD REMAIN IN PORT, ALTER COURSE, AND/OR SECURE THE
VESSEL FOR EXTREME CONDITIONS BEFORE CONDITIONS DETERIORATE
FURTHER.
PHZ115>117-140415-
/O.EXB.PHFO.SC.Y.0032.260814T0400Z-260815T0400Z/
OAHU LEEWARD WATERS-KAIWI CHANNEL-MAUI COUNTY WINDWARD WATERS-
502 AM HST THU AUG 13 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 6 PM
HST FRIDAY...
* WHAT...NORTHEAST WINDS 15 TO 25 KT.
* WHERE...OAHU LEEWARD WATERS, KAIWI CHANNEL AND MAUI COUNTY
WINDWARD WATERS.
* WHEN...FROM 6 PM THIS EVENING TO 6 PM HST FRIDAY.
* IMPACTS...CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER
VESSELS, SHOULD AVOID NAVIGATING IN THESE CONDITIONS.
PHZ121-123-124-140415-
/O.NEW.PHFO.HU.A.3001.260813T1502Z-000000T0000Z/
/O.EXT.PHFO.SC.Y.0032.000000T0000Z-260815T0400Z/
ALENUIHAHA CHANNEL-BIG ISLAND LEEWARD WATERS-
BIG ISLAND SOUTHEAST WATERS-
502 AM HST THU AUG 13 2026
..HURRICANE WATCH IN EFFECT
..SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 6 PM HST FRIDAY
* WHAT...FOR THE SMALL CRAFT ADVISORY, NORTHEAST WINDS 15 TO 25 KT
AND SEAS 6 TO 11 FEET. FOR THE HURRICANE WATCH, HURRICANE
CONDITIONS POSSIBLE.
* WHERE...ALENUIHAHA CHANNEL, BIG ISLAND LEEWARD WATERS AND BIG
ISLAND SOUTHEAST WATERS.
* WHEN...FOR THE SMALL CRAFT ADVISORY, UNTIL 6 PM HST FRIDAY. FOR
THE HURRICANE WATCH, 6 PM FRIDAY THROUGH 6 PM SATURDAY.
* IMPACTS...EXTREMELY STRONG WINDS WILL CAUSE HAZARDOUS SEAS WHICH
WILL LIKELY CAPSIZE OR DAMAGE VESSELS AND SEVERELY REDUCE
VISIBILITY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MARINERS SHOULD REMAIN IN PORT, ALTER COURSE, AND/OR SECURE THE
VESSEL FOR EXTREME CONDITIONS BEFORE CONDITIONS DETERIORATE
FURTHER.
PHZ119-120-140415-
/O.EXT.PHFO.SC.Y.0032.000000T0000Z-260815T0400Z/
MAALAEA BAY-PAILOLO CHANNEL-
502 AM HST THU AUG 13 2026
..SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 6 PM HST FRIDAY
* WHAT...NORTHEAST WINDS 15 TO 25 KT, EXCEPT NORTH WINDS IN
MAALAEA BAY.
* WHERE...MAALAEA BAY AND PAILOLO CHANNEL.
* WHEN...UNTIL 6 PM HST FRIDAY.
* IMPACTS...CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER
VESSELS, SHOULD AVOID NAVIGATING IN THESE CONDITIONS.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page