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Oahu Surf Observation and Forecast/Coastal Forecast for Hawaiian Waters

460
FZHW50 PHFO 191327
CWFHFO

Coastal Waters Forecast
National Weather Service Honolulu HI
327 AM HST Tue Jan 19 2021

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

PHZ100-200145-
327 AM HST Tue Jan 19 2021

.Synopsis for Hawaiian coastal waters...
A surface trough near Maui will move slowly westward through
Wednesday. Widespread heavy showers and isolated thunderstorms
will accompany this trough as it moves over the central and
western islands. Moderate to locally strong easterly trade winds
will return later this week after the trough moves west of the
state, and surface high pressure builds far north-northeast of
the region.

$$

PHZ110-200145-
Kauai Northwest Waters-
327 AM HST Tue Jan 19 2021

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THIS AFTERNOON...

.TODAY...Northeast winds to 25 knots. Wind waves 10 feet.
Northwest swell 12 feet. Scattered heavy showers and isolated
thunderstorms.
.TONIGHT...Northeast winds to 25 knots. Wind waves 9 feet. North
swell 11 feet decreasing to 9 feet after midnight. Numerous
showers and isolated thunderstorms.
.WEDNESDAY...East winds 20 knots. Wind waves 6 feet. North swell
7 feet. Scattered showers.
.WEDNESDAY NIGHT...East winds 20 knots. Wind waves 5 feet. North
swell 6 feet. Scattered showers.
.THURSDAY...East winds 20 knots. Wind waves 5 feet. Northwest
swell 5 feet. Scattered showers.
.THURSDAY NIGHT...East winds 20 knots. Wind waves 5 feet.
Northwest swell 5 feet. Scattered showers.
.FRIDAY...East winds 20 knots. Wind waves 6 to 8 feet. Northwest
swell 8 to 10 feet. Scattered showers.
.SATURDAY...East winds to 25 knots. Wind waves 9 feet. Northwest
swell 10 to 12 feet. Scattered showers.

$$

PHZ111-200145-
Kauai Windward Waters-
327 AM HST Tue Jan 19 2021

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THIS AFTERNOON...

.TODAY...Northeast winds to 25 knots. Wind waves 10 feet.
Northwest swell 12 feet. Numerous heavy showers in the morning.
Isolated thunderstorms through the day. Heavy showers in the
afternoon.
.TONIGHT...Northeast winds to 25 knots. Wind waves 9 feet. North
swell 11 feet decreasing to 9 feet after midnight. Showers and
isolated thunderstorms.
.WEDNESDAY...East winds 15 knots. Wind waves 6 feet. North swell
7 feet. Scattered showers.
.WEDNESDAY NIGHT...East winds 15 knots. Wind waves 5 feet. North
swell 6 feet. Scattered showers.
.THURSDAY...East winds 15 knots. Wind waves 5 feet. Northwest
swell 5 feet. Scattered showers.
.THURSDAY NIGHT...East winds 20 knots. Wind waves 6 feet.
Northwest swell 5 feet. Scattered showers.
.FRIDAY...East winds 20 knots. Wind waves 7 to 8 feet. Northwest
swell 7 to 9 feet. Scattered showers.
.SATURDAY...East winds 20 knots. Wind waves 8 to 9 feet.
Northwest swell 9 to 11 feet. Scattered showers.

$$

PHZ112-200145-
Kauai Leeward Waters-
327 AM HST Tue Jan 19 2021

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THIS AFTERNOON...

.TODAY...Northeast winds to 25 knots. Wind waves 11 feet.
Northwest swell 12 feet. Isolated showers and thunderstorms.
.TONIGHT...Northeast winds to 25 knots. Wind waves 9 feet. North
swell 11 feet decreasing to 9 feet after midnight. Numerous
showers and isolated thunderstorms.
.WEDNESDAY...East winds 15 knots. Wind waves 6 feet. North swell
7 feet. Isolated showers in the morning, then scattered showers
in the afternoon.
.WEDNESDAY NIGHT...East winds 20 knots. Wind waves 5 feet. North
swell 6 feet. Isolated showers.
.THURSDAY...East winds 20 knots. Wind waves 5 feet. Northwest
swell 5 feet. Isolated showers.
.THURSDAY NIGHT...East winds 20 knots. Wind waves 4 feet.
Northwest swell 5 feet. Scattered showers.
.FRIDAY...East winds 20 knots. Wind waves 6 to 8 feet. Northwest
swell 8 to 10 feet. Isolated showers.
.SATURDAY...East winds 20 knots. Wind waves 7 to 8 feet.
Northwest swell 10 to 12 feet. Scattered showers.

$$

PHZ113-200145-
Kauai Channel-
327 AM HST Tue Jan 19 2021

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THIS AFTERNOON...

.TODAY...Northeast winds to 25 knots. Wind waves 11 feet.
Northwest swell 12 feet. Numerous heavy showers in the morning.
Isolated thunderstorms through the day. Heavy showers in the
afternoon.
.TONIGHT...Northeast winds 20 knots. Wind waves 9 feet. North
swell 11 feet decreasing to 9 feet after midnight. Numerous
showers and isolated thunderstorms.
.WEDNESDAY...East winds 20 knots. Wind waves 6 feet. North swell
7 feet. Isolated showers.
.WEDNESDAY NIGHT...East winds 20 knots. Wind waves 5 feet. North
swell 6 feet. Isolated showers.
.THURSDAY...East winds 20 knots. Wind waves 5 feet. North swell
5 feet. Scattered showers.
.THURSDAY NIGHT...East winds 20 knots. Wind waves 6 feet. North
swell 5 feet. Scattered showers.
.FRIDAY...East winds 20 knots. Wind waves 7 to 8 feet. Northwest
swell 7 to 9 feet. Scattered showers.
.SATURDAY...East winds 20 knots. Wind waves 8 feet. Northwest
swell 9 to 11 feet. Scattered showers.

$$

PHZ114-200145-
Oahu Windward Waters-
327 AM HST Tue Jan 19 2021

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THIS AFTERNOON...

.TODAY...Northeast winds to 25 knots. Wind waves 10 feet.
Northwest swell 14 feet decreasing to 12 feet in the afternoon.
Heavy showers and isolated thunderstorms.
.TONIGHT...East winds 20 knots. Wind waves 9 feet. North swell
11 feet decreasing to 9 feet after midnight. Isolated
thunderstorms in the evening. Showers through the night.
.WEDNESDAY...East winds 20 knots. Wind waves 6 feet. North swell
8 feet. Scattered showers.
.WEDNESDAY NIGHT...East winds 20 knots. Wind waves 5 feet. North
swell 7 feet. Scattered showers.
.THURSDAY...East winds 20 knots. Wind waves 5 feet. Northwest
swell 6 feet. Scattered showers.
.THURSDAY NIGHT...East winds 20 knots. Wind waves 6 feet.
Northwest swell 5 feet. Scattered showers.
.FRIDAY...East winds 20 knots. Wind waves 8 to 9 feet. Northwest
swell 7 to 9 feet. Scattered showers.
.SATURDAY...East winds to 25 knots. Wind waves 9 to 10 feet.
Northwest swell 9 to 11 feet. Scattered showers.

$$

PHZ115-200145-
Oahu Leeward Waters-
327 AM HST Tue Jan 19 2021

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THIS AFTERNOON...

.TODAY...Northeast winds to 25 knots. Wind waves 10 feet.
Northwest swell 10 feet. Numerous heavy showers in the morning.
Isolated thunderstorms through the day. Scattered heavy showers
in the afternoon.
.TONIGHT...East winds 15 knots. Wind waves 7 feet. Northwest
swell 8 feet. Isolated thunderstorms in the evening. Scattered
showers through the night.
.WEDNESDAY...Northeast winds 15 knots. Wind waves 5 feet. North
swell 7 feet. Isolated showers through the day.
.WEDNESDAY NIGHT...East winds 15 knots. Wind waves 4 feet. North
swell 6 feet. Isolated showers.
.THURSDAY...East winds 15 knots. Wind waves 4 feet. Northwest
swell 5 feet. Isolated showers.
.THURSDAY NIGHT...East winds 15 knots. Wind waves 4 feet.
Northwest swell 4 feet. Scattered showers.
.FRIDAY...East winds 20 knots. Wind waves 4 to 6 feet. Northwest
swell 6 to 8 feet. Isolated showers.
.SATURDAY...East winds 15 knots. Wind waves 5 to 6 feet.
Northwest swell 7 to 9 feet. Isolated showers.

$$

PHZ116-200145-
Kaiwi Channel-
327 AM HST Tue Jan 19 2021

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THIS AFTERNOON...

.TODAY...Northeast winds to 25 knots. Wind waves 11 feet.
Northwest swell 14 feet decreasing to 12 feet in the afternoon.
Heavy showers in the morning. Isolated thunderstorms through the
day. Scattered heavy showers in the afternoon.
.TONIGHT...Northeast winds to 25 knots becoming east 15 knots
after midnight. Wind waves 7 feet. North swell 11 feet decreasing
to 9 feet after midnight. Isolated thunderstorms in the evening.
Scattered showers through the night.
.WEDNESDAY...East winds 20 knots. Wind waves 5 feet. North swell
7 feet. Isolated showers.
.WEDNESDAY NIGHT...East winds 20 knots. Wind waves 5 feet. North
swell 6 feet. Isolated showers.
.THURSDAY...East winds 20 knots. Wind waves 5 feet. North swell
6 feet. Isolated showers.
.THURSDAY NIGHT...East winds 20 knots. Wind waves 6 feet. North
swell 5 feet. Scattered showers.
.FRIDAY...East winds 20 knots. Wind waves 8 to 9 feet. Northwest
swell 6 to 8 feet. Isolated showers.
.SATURDAY...East winds to 25 knots. Wind waves 9 to 10 feet.
Northwest swell 9 to 11 feet. Isolated showers.

$$

PHZ117-200145-
Maui County Windward Waters-
327 AM HST Tue Jan 19 2021

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THIS AFTERNOON...

.TODAY...East winds to 25 knots easing to 15 knots in the
afternoon. Wind waves 10 feet. Northwest swell 13 feet. Heavy
showers in the morning. Isolated thunderstorms through the day.
Numerous heavy showers in the afternoon.
.TONIGHT...East winds 15 knots. Wind waves 7 feet. Northwest
swell 11 feet becoming north 9 feet after midnight. Numerous
showers and isolated thunderstorms in the evening, then scattered
showers after midnight.
.WEDNESDAY...East winds 20 knots. Wind waves 5 feet. North swell
8 feet. Scattered showers.
.WEDNESDAY NIGHT...East winds 20 knots. Wind waves 5 feet. North
swell 7 feet. Scattered showers.
.THURSDAY...East winds 20 knots. Wind waves 5 feet. Northwest
swell 6 feet. Scattered showers.
.THURSDAY NIGHT...East winds 20 knots. Wind waves 6 feet.
Northwest swell 5 feet. Scattered showers.
.FRIDAY...East winds 20 knots. Wind waves 8 to 9 feet. Northwest
swell 6 to 8 feet. Scattered showers.
.SATURDAY...East winds to 25 knots. Wind waves 9 to 11 feet.
Northwest swell 9 to 11 feet. Scattered showers.

$$

PHZ118-200145-
Maui County Leeward Waters-
327 AM HST Tue Jan 19 2021

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THIS AFTERNOON...

.TODAY...Northeast winds 20 knots. Wind waves 9 feet. Northwest
swell 8 feet. Scattered heavy showers and isolated thunderstorms.
.TONIGHT...East winds 15 knots. Wind waves 7 feet. North swell
7 feet. Isolated thunderstorms in the evening. Scattered showers
through the night.
.WEDNESDAY...East winds 15 knots. Wind waves 4 feet. North swell
6 feet. Isolated showers.
.WEDNESDAY NIGHT...Northeast winds 15 knots. Wind waves 4 feet.
North swell 5 feet. Isolated showers.
.THURSDAY...East winds 10 knots. Wind waves 4 feet. North swell
4 feet. Isolated showers.
.THURSDAY NIGHT...East winds 15 knots. Wind waves 5 feet. North
swell 3 feet. Scattered showers.
.FRIDAY...East winds 15 knots. Wind waves 6 feet. Northwest swell
4 to 6 feet. Isolated showers.
.SATURDAY...East winds 15 knots. Wind waves 6 to 8 feet.
Northwest swell 6 to 7 feet. Isolated showers.

$$

PHZ119-200145-
Maalaea Bay-
327 AM HST Tue Jan 19 2021

.TODAY...North winds 20 knots. Wind waves 3 feet. Isolated
thunderstorms in the morning. Scattered heavy showers through the
day.
.TONIGHT...North winds 20 knots. Wind waves 3 feet in the evening
then 2 feet or less. Scattered showers in the evening, then
isolated showers after midnight.
.WEDNESDAY...North winds 10 knots rising to to 25 knots in the
afternoon. Wind waves 2 feet or less.
.WEDNESDAY NIGHT...North winds to 25 knots. Wind waves 2 feet or
less.
.THURSDAY...North winds to 25 knots. Wind waves 2 feet or less.
Isolated showers.
.THURSDAY NIGHT...North winds to 25 knots. Wind waves 2 feet or
less. Isolated showers.
.FRIDAY...North winds to 25 knots. Wind waves 4 to 6 feet.
Isolated showers.
.SATURDAY...North winds to 25 knots. Wind waves 6 to 7 feet.

$$

PHZ120-200145-
Pailolo Channel-
327 AM HST Tue Jan 19 2021

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THIS AFTERNOON...

.TODAY...Northeast winds 20 knots. Wind waves 8 feet. Northwest
swell 9 feet. Numerous heavy showers in the morning. Isolated
thunderstorms through the day. Scattered heavy showers in the
afternoon.
.TONIGHT...East winds 20 knots. Wind waves 5 feet. Northwest
swell 8 feet. Isolated thunderstorms in the evening. Scattered
showers through the night.
.WEDNESDAY...East winds 15 knots rising to to 25 knots in the
afternoon. Wind waves 4 feet. Northwest swell 7 feet. Scattered
showers.
.WEDNESDAY NIGHT...East winds to 25 knots. Wind waves 5 feet.
North swell 6 feet. Scattered showers.
.THURSDAY...East winds to 25 knots. Wind waves 5 feet. North
swell 5 feet. Isolated showers.
.THURSDAY NIGHT...East winds to 25 knots. Wind waves 5 feet.
North swell 4 feet. Isolated showers.
.FRIDAY...East winds to 25 knots. Wind waves 8 to 10 feet.
Northwest swell 3 to 5 feet. Isolated showers.
.SATURDAY...East winds to 25 knots. Wind waves 12 to 13 feet.
Northwest swell 5 to 6 feet. Isolated showers.

$$

PHZ121-200145-
Alenuihaha Channel-
327 AM HST Tue Jan 19 2021

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THIS AFTERNOON...

.TODAY...East winds 20 knots. Wind waves 8 feet. Northwest swell
11 feet. Numerous heavy showers and isolated thunderstorms in the
morning, then scattered heavy showers in the afternoon.
.TONIGHT...Northeast winds 20 knots. Wind waves 6 feet. Northwest
swell 9 feet. Scattered showers.
.WEDNESDAY...East winds 20 knots. Wind waves 5 feet. Northwest
swell 8 feet. Isolated showers.
.WEDNESDAY NIGHT...East winds to 25 knots. Wind waves 6 feet.
North swell 7 feet. Isolated showers.
.THURSDAY...East winds 20 knots. Wind waves 5 feet. North swell
6 feet. Isolated showers.
.THURSDAY NIGHT...East winds to 25 knots. Wind waves 7 feet.
Northwest swell 5 feet. Scattered showers.
.FRIDAY...East winds to 25 knots. Wind waves 9 to 11 feet.
Northwest swell 5 to 7 feet. Isolated showers.
.SATURDAY...East winds to 25 knots. Wind waves 11 to 12 feet.
Northwest swell 8 to 10 feet. Isolated showers.

$$

PHZ122-200145-
Big Island Windward Waters-
327 AM HST Tue Jan 19 2021

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THIS AFTERNOON...

.TODAY...Southeast winds 20 knots. Wind waves 6 feet. Northwest
swell 13 feet. Numerous showers and isolated thunderstorms in the
morning, then scattered showers in the afternoon.
.TONIGHT...East winds 20 knots. Wind waves 4 feet. Northwest
swell 11 feet decreasing to 9 feet after midnight. Scattered
showers.
.WEDNESDAY...East winds 20 knots. Wind waves 4 feet. North swell
8 feet. Scattered showers.
.WEDNESDAY NIGHT...East winds 20 knots. Wind waves 4 feet. North
swell 7 feet. Scattered showers.
.THURSDAY...East winds 20 knots. Wind waves 4 feet. North swell
6 feet. Scattered showers.
.THURSDAY NIGHT...East winds 20 knots. Wind waves 6 feet. North
swell 5 feet. Scattered showers.
.FRIDAY...East winds 20 knots. Wind waves 7 to 9 feet. Northwest
swell 5 to 7 feet. Scattered showers.
.SATURDAY...East winds to 25 knots. Wind waves 9 to 10 feet.
Northwest swell 9 to 11 feet. Scattered showers.

$$

PHZ123-200145-
Big Island Leeward Waters-
327 AM HST Tue Jan 19 2021

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THIS AFTERNOON...

.TODAY...West of the Big Island, winds variable less than
10 knots becoming north 10 knots in the afternoon. Near South
Point, east winds 20 knots. Wind waves 8 feet. Northwest swell
9 feet. Isolated thunderstorms in the morning. Scattered showers
through the day.
.TONIGHT...Northwest winds 10 knots west of the Big Island...east
20 knots near South Point. Wind waves 5 feet. Northwest swell
7 feet. Scattered showers through the night.
.WEDNESDAY...West of the Big Island, west winds 10 knots veering
north in the afternoon. Near South Point, east winds 20 knots.
Wind waves 5 feet. Northwest swell 5 feet. Isolated showers.
.WEDNESDAY NIGHT...Winds variable less than 10 knots west of the
Big Island...east 20 knots near South Point. Wind waves 5 feet.
Northwest swell 4 feet. Isolated showers.
.THURSDAY...Winds variable less than 10 knots west of the Big
Island...east 20 knots near South Point. Wind waves 5 feet.
Northwest swell 3 feet. Isolated showers.
.THURSDAY NIGHT...Winds variable less than 10 knots west of the
Big Island...east 20 knots near South Point. Wind waves 6 feet.
Northwest swell 3 feet. Scattered showers.
.FRIDAY...Winds variable less than 10 knots west of the Big
Island...east 20 knots near South Point. Wind waves 7 to 9 feet.
Northwest swell 4 to 6 feet. Isolated showers.
.SATURDAY...West of the Big Island, winds variable less than
10 knots becoming northwest 10 knots in the afternoon and
evening, then becoming variable less than 10 knots after
midnight. Near South Point, east winds to 25 knots. Wind waves
10 to 11 feet. Northwest swell 6 to 8 feet. Isolated showers.

$$

PHZ124-200145-
Big Island Southeast Waters-
327 AM HST Tue Jan 19 2021

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THIS AFTERNOON...

.TODAY...East winds 15 knots. Wind waves 9 feet. Northwest swell
9 feet. Scattered showers.
.TONIGHT...East winds 15 knots. Wind waves 6 feet. Northwest
swell 7 feet. Scattered showers.
.WEDNESDAY...East winds 15 knots rising to to 25 knots in the
afternoon. Wind waves 5 feet. Northwest swell 6 feet. Scattered
showers.
.WEDNESDAY NIGHT...East winds 20 knots. Wind waves 5 feet.
Northwest swell 6 feet. Scattered showers.
.THURSDAY...East winds 20 knots. Wind waves 5 feet. Northwest
swell 5 feet. Scattered showers.
.THURSDAY NIGHT...East winds 20 knots. Wind waves 5 feet.
Northwest swell 4 feet. Scattered showers.
.FRIDAY...East winds 20 knots. Wind waves 6 to 8 feet. Northwest
swell 4 to 6 feet. Scattered showers.
.SATURDAY...East winds to 25 knots. Wind waves 10 feet. Northwest
swell 6 to 8 feet. Scattered showers.

$$

Bulletins, Forecasts and Observations are courtesy of Honolulu National Weather Service Forecast Office



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