018
WHHW70 PHFO 140301
MWWHFO
URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE HONOLULU HI
501 PM HST THU AUG 13 2026
PHZ121-123-124-141615-
/O.UPG.PHFO.HU.A.3001.000000T0000Z-000000T0000Z/
/O.NEW.PHFO.HU.W.3001.260814T0301Z-000000T0000Z/
/O.CON.PHFO.SC.Y.0032.000000T0000Z-260815T0400Z/
ALENUIHAHA CHANNEL-BIG ISLAND LEEWARD WATERS-
BIG ISLAND SOUTHEAST WATERS-
501 PM HST THU AUG 13 2026
..HURRICANE WARNING IN EFFECT
..SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM HST FRIDAY
* WHAT...FOR THE HURRICANE WARNING, EAST WINDS 40 TO 65 KT WITH
GUSTS UP TO 70 KT AND SEAS 18 TO 23 FEET. FOR THE SMALL CRAFT
ADVISORY, NORTHEAST WINDS 15 TO 25 KT WITH GUSTS UP TO 35 KT AND
SEAS 7 TO 12 FEET.
* WHERE...ALENUIHAHA CHANNEL, BIG ISLAND LEEWARD WATERS AND BIG
ISLAND SOUTHEAST WATERS.
* WHEN...FOR THE HURRICANE WARNING, 6 PM FRIDAY UNTIL 6 AM SUNDAY.
FOR THE SMALL CRAFT ADVISORY, UNTIL 6 PM HST FRIDAY.
* 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.
PHZ122-141615-
/O.UPG.PHFO.HU.A.3001.000000T0000Z-000000T0000Z/
/O.NEW.PHFO.HU.W.3001.260814T0301Z-000000T0000Z/
/O.CON.PHFO.SC.Y.0032.260814T0400Z-260815T0400Z/
BIG ISLAND WINDWARD WATERS-
501 PM HST THU AUG 13 2026
..HURRICANE WARNING IN EFFECT
..SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM HST FRIDAY
* WHAT...FOR THE HURRICANE WARNING, EAST WINDS 35 TO 45 KT WITH
GUSTS UP TO 65 KT AND SEAS 17 TO 22 FEET. FOR THE SMALL CRAFT
ADVISORY, NORTHEAST WINDS 15 TO 25 KT WITH GUSTS UP TO 30 KT
AND SEAS 6 TO 11 FEET EXPECTED.
* WHERE...BIG ISLAND WINDWARD WATERS.
* WHEN...FOR THE HURRICANE WARNING, 6 PM FRIDAY UNTIL 6 AM
SUNDAY. FOR THE SMALL CRAFT ADVISORY, UNTIL 6 PM HST FRIDAY.
* 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.
PHZ116-117-141615-
/O.NEW.PHFO.TR.A.3001.260814T0301Z-000000T0000Z/
/O.EXT.PHFO.SC.Y.0032.260814T0400Z-260815T1600Z/
KAIWI CHANNEL-MAUI COUNTY WINDWARD WATERS-
501 PM HST THU AUG 13 2026
..TROPICAL STORM WATCH IN EFFECT
..SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 6 AM HST SATURDAY
* WHAT...FOR THE SMALL CRAFT ADVISORY, EAST WINDS 15 TO 25 KT
WITH GUSTS UP TO 30 KT AND SEAS 8 TO 13 FEET EXPECTED. FOR THE
TROPICAL STORM WATCH, EAST WINDS 30 TO 40 KT WITH GUSTS UP TO
55 KT AND SEAS 10 TO 15 FEET.
* WHERE...KAIWI CHANNEL AND MAUI COUNTY WINDWARD WATERS.
* WHEN...FOR THE SMALL CRAFT ADVISORY, UNTIL 6 AM HST SATURDAY.
FOR THE TROPICAL STORM WATCH, 6 AM SATURDAY THROUGH 6 AM SUNDAY.
* IMPACTS...VERY STRONG WINDS WILL CAUSE HAZARDOUS SEAS WHICH
COULD CAPSIZE OR DAMAGE VESSELS AND REDUCE VISIBILITY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MARINERS SHOULD CONSIDER ALTERING PLANS TO AVOID POSSIBLE
HAZARDOUS CONDITIONS. REMAIN IN PORT, SEEK SAFE HARBOR, ALTER
COURSE, AND/OR SECURE THE VESSEL FOR SEVERE WIND AND SEAS.
PHZ119-120-141615-
/O.NEW.PHFO.TR.A.3001.260814T0301Z-000000T0000Z/
/O.EXT.PHFO.SC.Y.0032.000000T0000Z-260815T1600Z/
MAALAEA BAY-PAILOLO CHANNEL-
501 PM HST THU AUG 13 2026
..TROPICAL STORM WATCH IN EFFECT
..SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 6 AM HST SATURDAY
* WHAT...FOR THE SMALL CRAFT ADVISORY, NORTHEAST WINDS 15 TO 25
KT WITH GUSTS UP TO 35 KT AND SEAS 6 TO 9 FEET. FOR THE
TROPICAL STORM WATCH, NORTHEAST WINDS 30 TO 40 KT WITH GUSTS
UP TO 55 KT AND SEAS 7 TO 12 FEET.
* WHERE...MAALAEA BAY AND PAILOLO CHANNEL.
* WHEN...FOR THE SMALL CRAFT ADVISORY, UNTIL 6 AM HST SATURDAY.
FOR THE TROPICAL STORM WATCH, 6 AM SATURDAY THROUGH 6 AM SUNDAY.
* IMPACTS...VERY STRONG WINDS WILL CAUSE HAZARDOUS SEAS WHICH
COULD CAPSIZE OR DAMAGE VESSELS AND REDUCE VISIBILITY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MARINERS SHOULD CONSIDER ALTERING PLANS TO AVOID POSSIBLE
HAZARDOUS CONDITIONS. REMAIN IN PORT, SEEK SAFE HARBOR, ALTER
COURSE, AND/OR SECURE THE VESSEL FOR SEVERE WIND AND SEAS.
PHZ115-141615-
/O.EXT.PHFO.SC.Y.0032.260814T0400Z-260815T1600Z/
OAHU LEEWARD WATERS-
501 PM HST THU AUG 13 2026
..SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 6 AM HST SATURDAY
* WHAT...NORTHEAST WINDS 15 TO 25 KT WITH GUSTS UP TO 30 KT AND
SEAS 6 TO 9 FEET EXPECTED.
* WHERE...OAHU LEEWARD WATERS.
* WHEN...UNTIL 6 AM HST SATURDAY.
* IMPACTS...CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER
VESSELS, SHOULD AVOID NAVIGATING IN THESE CONDITIONS.
PHZ118-141615-
/O.NEW.PHFO.TR.A.3001.260814T0301Z-000000T0000Z/
MAUI COUNTY LEEWARD WATERS-
501 PM HST THU AUG 13 2026
..TROPICAL STORM WATCH IN EFFECT
* WHAT...NORTHEAST WINDS 35 TO 45 KT WITH GUSTS UP TO 65 KT AND
SEAS 16 TO 21 FEET.
* WHERE...MAUI COUNTY LEEWARD WATERS.
* WHEN...6 AM SATURDAY THROUGH 6 AM SUNDAY.
* IMPACTS...VERY STRONG WINDS WILL CAUSE HAZARDOUS SEAS WHICH
COULD CAPSIZE OR DAMAGE VESSELS AND REDUCE VISIBILITY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MARINERS SHOULD CONSIDER ALTERING PLANS TO AVOID POSSIBLE
HAZARDOUS CONDITIONS. REMAIN IN PORT, SEEK SAFE HARBOR, ALTER
COURSE, AND/OR SECURE THE VESSEL FOR SEVERE WIND AND SEAS.
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