Coastal Waters Forecast
Issued by NWS Honolulu, HI

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000
FZHW50 PHFO 200740
CWFHFO

Coastal Waters Forecast
National Weather Service Honolulu HI
940 PM HST Thu Apr 19 2018

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

PHZ100-202000-
940 PM HST Thu Apr 19 2018

.Synopsis for Hawaiian coastal waters...
A high far north of the islands will move east through early next
week. A trough aloft will produce locally heavy downpours and a
slight chance of thunderstorms through Friday.

$$

PHZ110-202000-
Kauai Northwest Waters-
940 PM HST Thu Apr 19 2018

.REST OF TONIGHT...East winds 20 knots. Wind waves 6 feet.
Northwest swell 5 feet. Scattered heavy showers early in the
evening, then isolated showers after midnight.
.FRIDAY...East winds 20 knots. Wind waves 7 feet. Northwest swell
5 feet. Isolated showers.
.FRIDAY NIGHT...East winds 20 knots. Wind waves 6 feet. Northwest
swell 4 feet. Scattered showers in the evening, then isolated
showers after midnight.
.SATURDAY...East winds 20 knots. Wind waves 6 feet. Northwest
swell 4 feet. Isolated showers in the morning, then scattered
showers in the afternoon.
.SATURDAY NIGHT...East winds 20 knots. Wind waves 6 feet.
Northwest swell 4 feet. Scattered showers in the evening, then
isolated showers after midnight.
.SUNDAY...East winds 20 knots. Wind waves 6 feet. Northwest swell
5 feet. Isolated showers.
.SUNDAY NIGHT...East winds 20 knots. Wind waves 7 feet. Northwest
swell 6 feet. Isolated showers in the evening, then scattered
showers after midnight.
.MONDAY...East winds 20 knots. Wind waves 7 to 9 feet. Northwest
swell 5 to 6 feet. Scattered showers.
.TUESDAY...East winds to 25 knots. Wind waves 9 feet. North swell
4 to 5 feet. Scattered showers.

$$

PHZ111-202000-
Kauai Windward Waters-
940 PM HST Thu Apr 19 2018

.REST OF TONIGHT...East winds 20 knots. Wind waves 7 feet.
Northwest swell 5 feet. Scattered heavy showers.
.FRIDAY...East winds 20 knots. Wind waves 7 feet. Northwest swell
4 feet. Scattered showers in the morning, then isolated showers
in the afternoon.
.FRIDAY NIGHT...East winds 15 knots. Wind waves 6 feet. Northwest
swell 4 feet. Scattered showers in the evening, then isolated
showers after midnight.
.SATURDAY...East winds 15 knots. Wind waves 6 feet. Northwest
swell 4 feet. Isolated showers in the morning, then scattered
showers in the afternoon.
.SATURDAY NIGHT...East winds 20 knots. Wind waves 6 feet.
Northwest swell 4 feet. Scattered showers.
.SUNDAY...East winds 20 knots. Wind waves 7 feet. Northwest swell
4 feet. Scattered showers in the morning, then isolated showers
in the afternoon.
.SUNDAY NIGHT...East winds 20 knots. Wind waves 7 feet. Northwest
swell 6 feet. Isolated showers in the evening, then scattered
showers after midnight.
.MONDAY...East winds 20 knots. Wind waves 7 to 9 feet. Northwest
swell 5 to 6 feet. Scattered showers.
.TUESDAY...East winds 20 knots. Wind waves 9 feet. North swell
4 to 5 feet. Scattered showers.

$$

PHZ112-202000-
Kauai Leeward Waters-
940 PM HST Thu Apr 19 2018

.REST OF TONIGHT...East winds 20 knots. Wind waves 6 feet.
Northwest swell 5 feet. Scattered heavy showers early in the
evening, then isolated showers after midnight.
.FRIDAY...East winds 20 knots. Wind waves 7 feet. Northwest swell
5 feet. Isolated showers.
.FRIDAY NIGHT...East winds 20 knots. Wind waves 6 feet. Northwest
swell 4 feet. Isolated showers through the night.
.SATURDAY...Northeast winds 20 knots...northeast 10 knots in the
Kaulakahi Channel. Wind waves 6 feet. Northwest swell 4 feet.
Isolated showers.
.SATURDAY NIGHT...East winds 20 knots. Wind waves 6 feet.
Northwest swell 4 feet. Isolated showers through the night.
.SUNDAY...East winds 20 knots. Wind waves 7 feet. Northwest swell
4 feet. Isolated showers through the day.
.SUNDAY NIGHT...East winds to 25 knots...east 15 knots in the
Kaulakahi Channel. Wind waves 8 feet. Northwest swell 6 feet.
Isolated showers through the night.
.MONDAY...East winds to 25 knots. Wind waves 8 to 9 feet.
Northwest swell 5 to 6 feet. Isolated showers.
.TUESDAY...East winds to 25 knots. Wind waves 9 feet. Northwest
swell 4 to 5 feet. Isolated showers.

$$

PHZ113-202000-
Kauai Channel-
940 PM HST Thu Apr 19 2018

.REST OF TONIGHT...East winds 20 knots. Wind waves 7 feet.
Northwest swell 4 feet. Heavy showers likely early in the
evening. Slight chance of thunderstorms through the night.
Scattered heavy showers after midnight.
.FRIDAY...Northeast winds 20 knots. Wind waves 7 feet. Northwest
swell 4 feet. Scattered showers in the morning, then isolated
showers in the afternoon.
.FRIDAY NIGHT...Northeast winds 20 knots. Wind waves 6 feet.
Northwest swell 4 feet. Isolated showers.
.SATURDAY...Northeast winds 20 knots. Wind waves 6 feet.
Northwest swell 4 feet. Isolated showers.
.SATURDAY NIGHT...East winds 20 knots. Wind waves 7 feet.
Northwest swell 4 feet. Isolated showers.
.SUNDAY...Northeast winds 20 knots. Wind waves 7 feet. Northwest
swell 4 feet. Isolated showers.
.SUNDAY NIGHT...Northeast winds 20 knots. Wind waves 8 feet.
Northwest swell 6 feet. Isolated showers.
.MONDAY...Northeast winds to 25 knots. Wind waves 8 to 9 feet.
Northwest swell 5 to 6 feet. Isolated showers.
.TUESDAY...East winds 20 knots. Wind waves 9 feet. North swell
4 to 5 feet. Isolated showers.

$$

PHZ114-202000-
Oahu Windward Waters-
940 PM HST Thu Apr 19 2018

.REST OF TONIGHT...East winds 20 knots. Wind waves 7 feet.
Northwest swell 4 feet. Heavy showers likely early in the
evening. Slight chance of thunderstorms through the night.
Scattered heavy showers after midnight.
.FRIDAY...East winds 20 knots. Wind waves 7 feet. Northwest swell
5 feet. Scattered showers.
.FRIDAY NIGHT...East winds 20 knots. Wind waves 6 feet. Northwest
swell 4 feet. Scattered showers.
.SATURDAY...East winds 20 knots. Wind waves 7 feet. Northwest
swell 4 feet. Scattered showers.
.SATURDAY NIGHT...East winds 20 knots. Wind waves 7 feet.
Northwest swell 4 feet. Scattered showers.
.SUNDAY...East winds 20 knots. Wind waves 7 feet. Northwest swell
4 feet. Scattered showers in the morning, then isolated showers
in the afternoon.
.SUNDAY NIGHT...East winds 20 knots. Wind waves 7 feet. Northwest
swell 6 feet. Isolated showers in the evening, then scattered
showers after midnight.
.MONDAY...East winds 20 knots. Wind waves 7 to 9 feet. Northwest
swell 5 to 6 feet. Scattered showers.
.TUESDAY...East winds 20 knots. Wind waves 9 feet. North swell
4 to 5 feet. Scattered showers.

$$

PHZ115-202000-
Oahu Leeward Waters-
940 PM HST Thu Apr 19 2018

.REST OF TONIGHT...East winds 20 knots. Wind waves 6 feet.
Northwest swell 4 feet. Heavy showers likely and slight chance of
thunderstorms.
.FRIDAY...East winds 20 knots. Wind waves 6 feet. Northwest swell
4 feet. Showers likely in the morning, then isolated showers in
the afternoon.
.FRIDAY NIGHT...Northeast winds 20 knots. Wind waves 6 feet.
Northwest swell 4 feet. Isolated showers through the night.
.SATURDAY...Northeast winds 20 knots. Wind waves 5 feet.
Northwest swell 4 feet. Isolated showers through the day.
.SATURDAY NIGHT...Northeast winds 20 knots. Wind waves 6 feet.
Northwest swell 4 feet. Isolated showers.
.SUNDAY...Northeast winds 20 knots. Wind waves 7 feet. Northwest
swell 4 feet. Isolated showers.
.SUNDAY NIGHT...Northeast winds to 25 knots. Wind waves 8 feet.
Northwest swell 5 feet. Isolated showers through the night.
.MONDAY...Northeast winds 20 knots. Wind waves 7 to 8 feet.
Northwest swell 4 to 5 feet. Isolated showers.
.TUESDAY...Northeast winds 20 knots. Wind waves 8 feet. Northwest
swell 3 to 4 feet. Isolated showers.

$$

PHZ116-202000-
Kaiwi Channel-
940 PM HST Thu Apr 19 2018

.REST OF TONIGHT...East winds 20 knots. Wind waves 7 feet.
Northwest swell 4 feet. Heavy showers likely and slight chance of
thunderstorms.
.FRIDAY...East winds 20 knots. Wind waves 7 feet. Northwest swell
5 feet. Heavy showers likely in the morning, then scattered
showers in the afternoon.
.FRIDAY NIGHT...Northeast winds 20 knots. Wind waves 6 feet.
Northwest swell 4 feet. Isolated showers through the night.
.SATURDAY...East winds 20 knots. Wind waves 7 feet. Northwest
swell 4 feet. Isolated showers.
.SATURDAY NIGHT...East winds 20 knots. Wind waves 7 feet.
Northwest swell 4 feet. Isolated showers through the night.
.SUNDAY...Northeast winds 20 knots. Wind waves 7 feet. Northwest
swell 4 feet. Isolated showers.
.SUNDAY NIGHT...Northeast winds to 25 knots. Wind waves 8 feet.
Northwest swell 6 feet. Isolated showers through the night.
.MONDAY...Northeast winds 20 knots. Wind waves 7 to 9 feet.
Northwest swell 5 to 6 feet. Scattered showers.
.TUESDAY...East winds to 25 knots. Wind waves 9 feet. North swell
4 to 5 feet. Scattered showers.

$$

PHZ117-202000-
Maui County Windward Waters-
940 PM HST Thu Apr 19 2018

.REST OF TONIGHT...East winds 20 knots. Wind waves 7 feet.
Northwest swell 4 feet. Heavy showers likely and slight chance of
thunderstorms.
.FRIDAY...East winds 20 knots. Wind waves 7 feet. Northwest swell
5 feet. Heavy showers likely in the morning, then scattered
showers in the afternoon.
.FRIDAY NIGHT...East winds 20 knots. Wind waves 6 feet. Northwest
swell 4 feet. Scattered showers.
.SATURDAY...East winds 20 knots. Wind waves 7 feet. Northwest
swell 4 feet. Scattered showers.
.SATURDAY NIGHT...East winds 20 knots. Wind waves 7 feet.
Northwest swell 4 feet. Scattered showers.
.SUNDAY...East winds 20 knots. Wind waves 7 feet. Northwest swell
4 feet. Scattered showers in the morning, then isolated showers
in the afternoon.
.SUNDAY NIGHT...East winds 20 knots. Wind waves 7 feet. Northwest
swell 6 feet. Isolated showers in the evening, then scattered
showers after midnight.
.MONDAY...East winds 20 knots. Wind waves 7 to 9 feet. Northwest
swell 5 to 6 feet. Scattered showers.
.TUESDAY...East winds 20 knots. Wind waves 8 to 9 feet. Northwest
swell 4 to 5 feet. Scattered showers.

$$

PHZ118-202000-
Maui County Leeward Waters-
940 PM HST Thu Apr 19 2018

.REST OF TONIGHT...East winds 20 knots. Wind waves 7 feet.
Northwest swell 3 feet. Heavy showers likely and slight chance of
thunderstorms.
.FRIDAY...East winds 20 knots. Wind waves 7 feet. Northwest swell
3 feet. Heavy showers likely in the morning, then scattered
showers in the afternoon.
.FRIDAY NIGHT...Northeast winds 15 knots. Wind waves 5 feet.
Northwest swell 3 feet. Isolated showers through the night.
.SATURDAY...Northeast winds 15 knots. Wind waves 6 feet.
Northwest swell 3 feet. Isolated showers.
.SATURDAY NIGHT...Northeast winds 15 knots. Wind waves 6 feet.
Northwest swell 3 feet. Isolated showers through the night.
.SUNDAY...Northeast winds 20 knots. Wind waves 6 feet. Northwest
swell 3 feet. Isolated showers in the morning.
.SUNDAY NIGHT...Northeast winds 20 knots. Wind waves 7 feet.
Northwest swell 4 feet. Isolated showers after midnight.
.MONDAY...Northeast winds 15 knots. Wind waves 6 to 7 feet.
Northwest swell 3 to 4 feet. Isolated showers.
.TUESDAY...Northeast winds 15 knots. Wind waves 7 feet. Northwest
swell 3 feet. Isolated showers.

$$

PHZ119-202000-
Maalaea Bay-
940 PM HST Thu Apr 19 2018

...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY AFTERNOON...

.REST OF TONIGHT...North winds to 25 knots. Wind waves 3 feet.
Heavy showers likely early in the evening. Slight chance of
thunderstorms through the night. Scattered heavy showers after
midnight.
.FRIDAY...North winds to 25 knots. Wind waves 3 feet. Scattered
heavy showers.
.FRIDAY NIGHT...North winds to 25 knots. Wind waves 3 feet in the
evening then 2 feet or less. Isolated showers after midnight.
.SATURDAY...North winds to 25 knots. Wind waves 3 feet. Isolated
showers.
.SATURDAY NIGHT...North winds to 25 knots. Wind waves 3 feet.
Isolated showers in the evening.
.SUNDAY...North winds to 25 knots. Wind waves 3 feet.
.SUNDAY NIGHT...North winds to 25 knots. Wind waves 3 feet.
.MONDAY...North winds to 25 knots. Wind waves 3 feet.
.TUESDAY...North winds to 25 knots. Wind waves 3 feet.

$$

PHZ120-202000-
Pailolo Channel-
940 PM HST Thu Apr 19 2018

...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY AFTERNOON...

.REST OF TONIGHT...East winds to 25 knots. Wind waves 7 feet.
Northwest swell 3 feet. Heavy showers likely early in the
evening. Slight chance of thunderstorms through the night.
Scattered heavy showers after midnight.
.FRIDAY...East winds to 25 knots. Wind waves 7 feet. Northwest
swell 3 feet. Scattered heavy showers.
.FRIDAY NIGHT...Northeast winds 20 knots. Wind waves 5 feet.
Northwest swell 3 feet. Isolated showers through the night.
.SATURDAY...East winds to 25 knots. Wind waves 6 feet. Northwest
swell 3 feet. Isolated showers in the morning, then scattered
showers in the afternoon.
.SATURDAY NIGHT...East winds to 25 knots. Wind waves 7 feet.
Northwest swell 3 feet. Scattered showers in the evening, then
isolated showers after midnight.
.SUNDAY...East winds to 25 knots. Wind waves 7 feet. Northwest
swell 3 feet. Isolated showers.
.SUNDAY NIGHT...Northeast winds to 25 knots. Wind waves 7 feet.
Northwest swell 4 feet. Isolated showers.
.MONDAY...Northeast winds to 25 knots. Wind waves 6 to 8 feet.
Northwest swell 4 feet. Isolated showers.
.TUESDAY...Northeast winds to 25 knots. Wind waves 7 to 8 feet.
Northwest swell 3 to 4 feet. Isolated showers.

$$

PHZ121-202000-
Alenuihaha Channel-
940 PM HST Thu Apr 19 2018

...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY AFTERNOON...

.REST OF TONIGHT...East winds to 25 knots. Wind waves 8 feet.
Northwest swell 4 feet. Scattered heavy showers and slight chance
of thunderstorms.
.FRIDAY...East winds to 25 knots. Wind waves 8 feet. Northwest
swell 4 feet. Scattered heavy showers and slight chance of
thunderstorms.
.FRIDAY NIGHT...East winds to 25 knots. Wind waves 6 feet.
Northwest swell 4 feet. Haze through the night. Isolated showers
through the night.
.SATURDAY...East winds to 25 knots. Wind waves 8 feet. Northwest
swell 4 feet. Haze. Isolated showers.
.SATURDAY NIGHT...East winds to 25 knots. Wind waves 8 feet.
Northwest swell 4 feet. Haze through the night. Isolated showers
through the night.
.SUNDAY...Northeast winds to 25 knots. Wind waves 8 feet.
Northwest swell 4 feet. Haze. Isolated showers.
.SUNDAY NIGHT...Northeast winds to 30 knots. Wind waves 9 feet.
Northwest swell 5 feet. Haze. Isolated showers.
.MONDAY...East winds to 25 knots. Wind waves 8 to 9 feet.
Northwest swell 5 to 6 feet. Haze. Isolated showers.
.TUESDAY...East winds to 25 knots. Wind waves 9 feet. Northwest
swell 4 to 5 feet. Haze. Isolated showers.

$$

PHZ122-202000-
Big Island Windward Waters-
940 PM HST Thu Apr 19 2018

.REST OF TONIGHT...East winds 20 knots. Wind waves 6 feet.
Northwest swell 4 feet. Occasional heavy showers and slight
chance of thunderstorms.
.FRIDAY...East winds 20 knots. Wind waves 6 feet. Northwest swell
5 feet. Occasional heavy showers in the morning. Slight chance of
thunderstorms through the day. Heavy showers likely in the
afternoon.
.FRIDAY NIGHT...East winds 15 knots. Wind waves 5 feet. Northwest
swell 4 feet. Scattered showers.
.SATURDAY...East winds 20 knots. Wind waves 7 feet. Northwest
swell 4 feet. Scattered showers.
.SATURDAY NIGHT...East winds 20 knots. Wind waves 7 feet.
Northwest swell 4 feet. Scattered showers.
.SUNDAY...East winds 20 knots. Wind waves 7 feet. Northwest swell
4 feet. Scattered showers.
.SUNDAY NIGHT...Northeast winds 20 knots. Wind waves 7 feet.
Northwest swell 5 feet. Scattered showers.
.MONDAY...East winds 20 knots. Wind waves 6 to 7 feet. Northwest
swell 5 to 6 feet. Scattered showers.
.TUESDAY...East winds 20 knots. Wind waves 7 to 8 feet. Northwest
swell 4 to 5 feet. Scattered showers.

$$

PHZ123-202000-
Big Island Leeward Waters-
940 PM HST Thu Apr 19 2018

...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY AFTERNOON...

.REST OF TONIGHT...Winds variable less than 10 knots west of the
Big Island...east to 25 knots near South Point. Wind waves
7 feet. Northwest swell 3 feet. Haze. Scattered heavy showers and
slight chance of thunderstorms.
.FRIDAY...Winds variable less than 10 knots west of the Big
Island...east to 25 knots near South Point. Wind waves 8 feet.
Northwest swell 3 feet. Haze. Scattered heavy showers and slight
chance of thunderstorms.
.FRIDAY NIGHT...Winds variable less than 10 knots west of the Big
Island...east to 25 knots near South Point. Wind waves 8 feet.
Northwest swell 3 feet. Haze. Isolated showers.
.SATURDAY...Winds variable less than 10 knots west of the Big
Island...east to 25 knots near South Point. Wind waves 8 feet.
Northwest swell 3 feet. Haze. Isolated showers.
.SATURDAY NIGHT...Winds variable less than 10 knots west of the
Big Island...east to 25 knots near South Point. Wind waves
8 feet. Northwest swell 3 feet. Haze. Isolated showers.
.SUNDAY...Winds variable less than 10 knots west of the Big
Island...east to 25 knots near South Point. Wind waves 9 feet.
Northwest swell 3 feet. Haze. Isolated showers.
.SUNDAY NIGHT...West of the Big Island, winds variable less than
10 knots becoming northeast 10 knots after midnight. Near South
Point, east winds to 25 knots. Wind waves 9 feet. Northwest swell
4 feet. Haze. Isolated showers.
.MONDAY...Winds variable less than 10 knots west of the Big
Island...east to 25 knots near South Point. Wind waves 9 feet.
Northwest swell 4 feet. Haze. Isolated showers.
.TUESDAY...Winds variable less than 10 knots west of the Big
Island...east to 25 knots near South Point. Wind waves 9 feet.
Northwest swell 3 to 4 feet. Haze. Isolated showers.

$$

PHZ124-202000-
Big Island Southeast Waters-
940 PM HST Thu Apr 19 2018

...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY AFTERNOON...

.REST OF TONIGHT...Northeast winds to 25 knots. Wind waves
7 feet. Northwest swell 3 feet. Heavy showers likely and slight
chance of thunderstorms.
.FRIDAY...Northeast winds to 25 knots. Wind waves 8 feet.
Northwest swell 3 feet. Heavy showers likely and slight chance of
thunderstorms.
.FRIDAY NIGHT...Northeast winds to 25 knots. Wind waves 8 feet.
Northwest swell 3 feet. Scattered showers.
.SATURDAY...Northeast winds to 25 knots. Wind waves 8 feet.
Northwest swell 3 feet. Scattered showers.
.SATURDAY NIGHT...Northeast winds to 25 knots. Wind waves 8 feet.
Northwest swell 3 feet. Scattered showers.
.SUNDAY...Northeast winds to 25 knots. Wind waves 9 feet.
Northwest swell 3 feet. Scattered showers.
.SUNDAY NIGHT...Northeast winds to 25 knots. Wind waves 9 feet.
Northwest swell 4 feet. Scattered showers.
.MONDAY...Northeast winds to 25 knots. Wind waves 9 feet.
Northwest swell 4 feet. Scattered showers.
.TUESDAY...Northeast winds to 25 knots. Wind waves 9 feet.
Northwest swell 3 to 4 feet. Scattered showers.

$$


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