Coastal Waters Forecast
Issued by NWS Honolulu, HI

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FZHW50 PHFO 011912
CWFHFO

Coastal Waters Forecast
National Weather Service Honolulu HI
912 AM HST Sun Aug 1 2021

Hawaiian coastal waters within 40 nautical miles including the
Hawaiian Islands Humpback Whale National Marine Sanctuary.

PHZ100-020730-
912 AM HST Sun Aug 1 2021

.Synopsis for Hawaiian coastal waters...
Expect strong trade winds and elevated, rough seas today as
surface high pressure builds far north-northeast of the state.
The trade winds will decrease slightly from tonight and Monday
through mid-week as this high gradually weakens.

$$

PHZ110-020730-
Kauai Northwest Waters-
912 AM HST Sun Aug 1 2021

...SMALL CRAFT ADVISORY IN EFFECT THROUGH EARLY MONDAY MORNING...

.REST OF TODAY...East winds to 25 knots. Wind waves 7 feet.
Isolated showers.
.TONIGHT...East winds to 25 knots. Wind waves 8 feet. Isolated
showers through the night.
.MONDAY...East winds 20 knots. Wind waves 7 feet. Isolated
showers in the morning.
.MONDAY NIGHT...East winds 20 knots. Wind waves 6 feet. Isolated
showers in the evening, then scattered showers after midnight.
.TUESDAY...East winds 20 knots. Wind waves 6 feet. Scattered
showers in the morning, then isolated showers in the afternoon.
.TUESDAY NIGHT...East winds 20 knots. Wind waves 6 feet.
Scattered showers.
.WEDNESDAY...East winds 20 knots. Wind waves 6 feet. Scattered
showers.
.THURSDAY...East winds 20 knots. Wind waves 5 feet. Scattered
showers.

$$

PHZ111-020730-
Kauai Windward Waters-
912 AM HST Sun Aug 1 2021

...SMALL CRAFT ADVISORY IN EFFECT THROUGH EARLY MONDAY MORNING...

.REST OF TODAY...East winds 20 knots. Wind waves 7 feet. Isolated
showers.
.TONIGHT...East winds 20 knots. Wind waves 7 feet. Isolated
showers.
.MONDAY...East winds 20 knots. Wind waves 7 feet. Isolated
showers in the morning.
.MONDAY NIGHT...East winds 20 knots. Wind waves 6 feet. Isolated
showers in the evening, then scattered showers after midnight.
.TUESDAY...East winds 20 knots. Wind waves 6 feet. Scattered
showers in the morning, then isolated showers in the afternoon.
.TUESDAY NIGHT...East winds 20 knots. Wind waves 6 feet.
Scattered showers.
.WEDNESDAY...East winds 15 knots. Wind waves 5 to 6 feet.
Scattered showers.
.THURSDAY...East winds 15 knots. Wind waves 5 feet. Scattered
showers.

$$

PHZ112-020730-
Kauai Leeward Waters-
912 AM HST Sun Aug 1 2021

...SMALL CRAFT ADVISORY IN EFFECT THROUGH EARLY MONDAY MORNING...

.REST OF TODAY...East winds to 25 knots. Wind waves 9 feet.
.TONIGHT...East winds 20 knots. Wind waves 9 feet.
.MONDAY...East winds 20 knots. Wind waves 7 feet.
.MONDAY NIGHT...East winds 20 knots. Wind waves 7 feet. Isolated
showers through the night.
.TUESDAY...East winds 20 knots. Wind waves 7 feet. Isolated
showers in the morning.
.TUESDAY NIGHT...East winds 20 knots. Wind waves 7 feet. Isolated
showers.
.WEDNESDAY...East winds 20 knots. Wind waves 6 feet. Isolated
showers.
.THURSDAY...East winds 20 knots. Wind waves 6 feet. Isolated
showers.

$$

PHZ113-020730-
Kauai Channel-
912 AM HST Sun Aug 1 2021

...SMALL CRAFT ADVISORY IN EFFECT THROUGH EARLY MONDAY MORNING...

.REST OF TODAY...East winds to 25 knots. Wind waves 9 feet.
Isolated showers.
.TONIGHT...Northeast winds 20 knots. Wind waves 9 feet. Isolated
showers.
.MONDAY...Northeast winds 20 knots. Wind waves 7 feet. Isolated
showers in the morning.
.MONDAY NIGHT...Northeast winds 20 knots. Wind waves 7 feet.
Isolated showers through the night.
.TUESDAY...Northeast winds 20 knots. Wind waves 7 feet. Isolated
showers through the day.
.TUESDAY NIGHT...East winds 20 knots. Wind waves 7 feet. Isolated
showers.
.WEDNESDAY...East winds 20 knots. Wind waves 6 feet. Isolated
showers.
.THURSDAY...East winds 20 knots. Wind waves 5 to 6 feet. Isolated
showers.

$$

PHZ114-020730-
Oahu Windward Waters-
912 AM HST Sun Aug 1 2021

...SMALL CRAFT ADVISORY IN EFFECT THROUGH EARLY MONDAY MORNING...

.REST OF TODAY...East winds to 25 knots. Wind waves 8 feet.
Isolated showers.
.TONIGHT...East winds 20 knots. Wind waves 8 feet. Isolated
showers.
.MONDAY...East winds 20 knots. Wind waves 7 feet. Isolated
showers in the morning.
.MONDAY NIGHT...East winds 20 knots. Wind waves 7 feet. Isolated
showers in the evening, then scattered showers after midnight.
.TUESDAY...East winds 20 knots. Wind waves 7 feet. Scattered
showers in the morning, then isolated showers in the afternoon.
.TUESDAY NIGHT...East winds 20 knots. Wind waves 6 feet.
Scattered showers.
.WEDNESDAY...East winds 20 knots. Wind waves 6 feet. Scattered
showers.
.THURSDAY...East winds 20 knots. Wind waves 6 feet. Scattered
showers.

$$

PHZ115-020730-
Oahu Leeward Waters-
912 AM HST Sun Aug 1 2021

...SMALL CRAFT ADVISORY IN EFFECT THROUGH EARLY MONDAY MORNING...

.REST OF TODAY...East winds to 25 knots. Wind waves 9 feet.
.TONIGHT...Northeast winds 20 knots. Wind waves 8 feet.
.MONDAY...East winds 20 knots. Wind waves 7 feet.
.MONDAY NIGHT...Northeast winds 20 knots. Wind waves 7 feet.
.TUESDAY...East winds 20 knots. Wind waves 7 feet.
.TUESDAY NIGHT...East winds 20 knots. Wind waves 6 feet.
.WEDNESDAY...East winds 20 knots. Wind waves 6 feet.
.THURSDAY...East winds 15 knots. Wind waves 5 feet.

$$

PHZ116-020730-
Kaiwi Channel-
912 AM HST Sun Aug 1 2021

...SMALL CRAFT ADVISORY IN EFFECT THROUGH EARLY TUESDAY MORNING...

.REST OF TODAY...East winds to 25 knots. Wind waves 8 feet.
.TONIGHT...Northeast winds to 25 knots. Wind waves 8 feet.
Isolated showers.
.MONDAY...Northeast winds to 25 knots. Wind waves 8 feet.
Isolated showers in the morning.
.MONDAY NIGHT...Northeast winds 20 knots. Wind waves 7 feet.
Isolated showers in the evening. Scattered showers after
midnight.
.TUESDAY...East winds 20 knots. Wind waves 7 feet. Scattered
showers in the morning. Isolated showers in the afternoon.
.TUESDAY NIGHT...East winds 20 knots. Wind waves 6 feet. Isolated
showers.
.WEDNESDAY...East winds 20 knots. Wind waves 6 feet. Isolated
showers.
.THURSDAY...East winds 15 knots. Wind waves 6 feet. Isolated
showers.

$$

PHZ117-020730-
Maui County Windward Waters-
912 AM HST Sun Aug 1 2021

...SMALL CRAFT ADVISORY IN EFFECT THROUGH EARLY TUESDAY MORNING...

.REST OF TODAY...East winds to 25 knots. Wind waves 8 feet.
Isolated showers.
.TONIGHT...East winds to 25 knots. Wind waves 7 feet. Isolated
showers.
.MONDAY...East winds 20 knots. Wind waves 7 feet. Isolated
showers in the morning.
.MONDAY NIGHT...East winds 20 knots. Wind waves 7 feet. Isolated
showers in the evening, then scattered showers after midnight.
.TUESDAY...East winds 20 knots. Wind waves 6 feet. Scattered
showers in the morning, then isolated showers in the afternoon.
.TUESDAY NIGHT...East winds 20 knots. Wind waves 6 feet.
Scattered showers.
.WEDNESDAY...East winds 20 knots. Wind waves 5 to 6 feet.
Scattered showers.
.THURSDAY...East winds 20 knots. Wind waves 6 feet. Scattered
showers.

$$

PHZ118-020730-
Maui County Leeward Waters-
912 AM HST Sun Aug 1 2021

...SMALL CRAFT ADVISORY IN EFFECT THROUGH EARLY TUESDAY MORNING...

.REST OF TODAY...East winds to 25 knots. Wind waves 9 feet.
.TONIGHT...Northeast winds 20 knots. Wind waves 8 feet.
.MONDAY...East winds 20 knots. Wind waves 7 feet.
.MONDAY NIGHT...Northeast winds 20 knots. Wind waves 7 feet.
.TUESDAY...East winds 20 knots. Wind waves 6 feet.
.TUESDAY NIGHT...East winds 20 knots. Wind waves 6 feet. Isolated
showers.
.WEDNESDAY...Northeast winds 15 knots. Wind waves 5 to 6 feet.
.THURSDAY...East winds 15 knots. Wind waves 5 feet.

$$

PHZ119-020730-
Maalaea Bay-
912 AM HST Sun Aug 1 2021

...GALE WARNING IN EFFECT THROUGH LATE THIS AFTERNOON...
...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH EARLY
TUESDAY MORNING...

.REST OF TODAY...North gales to 35 knots. Wind waves 5 feet.
.TONIGHT...Northeast winds to 25 knots. Wind waves 3 feet in the
evening then 2 feet or less.
.MONDAY...North winds to 25 knots. Wind waves 3 feet.
.MONDAY NIGHT...North winds to 25 knots. Wind waves 3 feet.
.TUESDAY...North winds to 25 knots. Wind waves 3 feet.
.TUESDAY NIGHT...North winds to 25 knots. Wind waves 3 feet.
.WEDNESDAY...North winds to 25 knots. Wind waves 3 feet.
.THURSDAY...North winds to 25 knots. Wind waves 3 feet.

$$

PHZ120-020730-
Pailolo Channel-
912 AM HST Sun Aug 1 2021

...GALE WARNING IN EFFECT THROUGH LATE THIS AFTERNOON...
...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH EARLY
TUESDAY MORNING...

.REST OF TODAY...East gales to 35 knots. Wind waves 8 feet.
.TONIGHT...East winds to 25 knots. Wind waves 7 feet. Isolated
showers after midnight.
.MONDAY...East winds to 25 knots. Wind waves 7 feet. Isolated
showers in the morning.
.MONDAY NIGHT...East winds to 25 knots. Wind waves 6 feet.
Isolated showers.
.TUESDAY...East winds to 25 knots. Wind waves 6 feet. Isolated
showers.
.TUESDAY NIGHT...East winds to 25 knots. Wind waves 6 feet.
Isolated showers.
.WEDNESDAY...East winds to 25 knots. Wind waves 5 feet. Isolated
showers.
.THURSDAY...East winds to 25 knots. Wind waves 5 feet. Isolated
showers.

$$

PHZ121-020730-
Alenuihaha Channel-
912 AM HST Sun Aug 1 2021

...GALE WARNING IN EFFECT THROUGH LATE THIS AFTERNOON...
...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH EARLY
TUESDAY MORNING...

.REST OF TODAY...East gales to 35 knots. Wind waves 12 feet.
.TONIGHT...East winds to 25 knots. Wind waves 10 feet. Isolated
showers.
.MONDAY...East winds to 25 knots. Wind waves 8 feet. Isolated
showers in the morning.
.MONDAY NIGHT...East winds to 25 knots. Wind waves 9 feet.
Isolated showers.
.TUESDAY...East winds to 25 knots. Wind waves 8 feet. Isolated
showers.
.TUESDAY NIGHT...East winds to 25 knots. Wind waves 8 feet.
Isolated showers.
.WEDNESDAY...East winds to 25 knots. Wind waves 7 feet. Isolated
showers.
.THURSDAY...East winds to 25 knots. Wind waves 7 feet. Isolated
showers.

$$

PHZ122-020730-
Big Island Windward Waters-
912 AM HST Sun Aug 1 2021

...SMALL CRAFT ADVISORY IN EFFECT THROUGH EARLY TUESDAY MORNING...

.REST OF TODAY...East winds to 25 knots. Wind waves 7 feet.
Isolated showers.
.TONIGHT...East winds 20 knots. Wind waves 6 feet. Isolated
showers.
.MONDAY...East winds 20 knots. Wind waves 6 feet. Isolated
showers in the morning.
.MONDAY NIGHT...East winds 20 knots. Wind waves 5 feet. Isolated
showers.
.TUESDAY...East winds 20 knots. Wind waves 5 feet. Isolated
showers.
.TUESDAY NIGHT...East winds 15 knots. Wind waves 5 feet.
Scattered showers.
.WEDNESDAY...East winds 15 knots. Wind waves 5 feet. Scattered
showers.
.THURSDAY...East winds 15 knots. Wind waves 5 feet. Scattered
showers.

$$

PHZ123-020730-
Big Island Leeward Waters-
912 AM HST Sun Aug 1 2021

...GALE WARNING IN EFFECT THROUGH LATE THIS AFTERNOON...
...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH EARLY
TUESDAY MORNING...

.REST OF TODAY...West winds 10 knots west of the Big Island...
east to 30 knots near South Point. Wind waves 12 feet. Isolated
showers.
.TONIGHT...West of the Big Island, west winds 10 knots veering
north after midnight. Near South Point, east winds to 25 knots.
Wind waves 10 feet.
.MONDAY...West of the Big Island, winds variable less than
10 knots becoming northwest 10 knots in the afternoon. Near South
Point, east winds to 25 knots. Wind waves 9 feet.
.MONDAY NIGHT...West of the Big Island, southeast winds 10 knots
in the evening becoming variable less than 10 knots. Near South
Point, east winds to 25 knots. Wind waves 8 feet. Isolated
showers after midnight.
.TUESDAY...Winds variable less than 10 knots west of the Big
Island...east to 25 knots near South Point. Wind waves 8 feet.
Isolated showers in the morning.
.TUESDAY NIGHT...Winds variable less than 10 knots west of the
Big Island...east to 25 knots near South Point. Wind waves
8 feet. Isolated showers through the night.
.WEDNESDAY...West of the Big Island, winds variable less than
10 knots becoming northwest 10 knots in the evening, then backing
southeast after midnight. Near South Point, east winds to
25 knots. Wind waves 7 feet. Isolated showers.
.THURSDAY...West of the Big Island, winds variable less than
10 knots becoming northwest 10 knots in the afternoon, then
backing south in the evening veering northwest after midnight.
Near South Point, east winds 20 knots. Wind waves 8 feet.
Isolated showers.

$$

PHZ124-020730-
Big Island Southeast Waters-
912 AM HST Sun Aug 1 2021

...GALE WARNING IN EFFECT THROUGH LATE THIS AFTERNOON...
...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH EARLY
TUESDAY MORNING...

.REST OF TODAY...Northeast winds to 30 knots. Wind waves 11 feet.
Scattered showers.
.TONIGHT...Northeast winds to 25 knots. Wind waves 9 feet.
Isolated showers.
.MONDAY...East winds to 25 knots. Wind waves 8 feet. Isolated
showers in the morning.
.MONDAY NIGHT...Northeast winds to 25 knots. Wind waves 8 feet.
Isolated showers through the night.
.TUESDAY...Northeast winds to 25 knots. Wind waves 7 feet.
Isolated showers through the day.
.TUESDAY NIGHT...Northeast winds to 25 knots. Wind waves 7 feet.
Isolated showers.
.WEDNESDAY...East winds to 25 knots. Wind waves 7 feet. Isolated
showers.
.THURSDAY...Northeast winds to 25 knots. Wind waves 7 to 8 feet.
Isolated showers.

$$


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