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Oahu Surf Observation and Forecast/Coastal Forecast for Hawaiian Waters

671
FZHW50 PHFO 202001
CWFHFO

Coastal Waters Forecast
National Weather Service Honolulu HI
1001 AM HST Mon Jan 20 2020

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

PHZ100-210915-
1001 AM HST Mon Jan 20 2020

.Synopsis for Hawaiian coastal waters...
High pressure north of the area will move east southeast over the
next few days resulting in lighter trade winds. A front will
approach the area from the northwest with winds becoming lighter
and favoring a southerly direction.

$$

PHZ110-210915-
Kauai Northwest Waters-
1001 AM HST Mon Jan 20 2020

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

.REST OF TODAY...East winds to 25 knots. Wind waves 7 feet. North
swell 5 feet. Isolated showers through the day.
.TONIGHT...East winds 15 knots. Wind waves 5 feet. North swell
5 feet. Isolated showers.
.TUESDAY...Southeast winds 10 knots. Wind waves 5 feet. North
swell 4 feet. Isolated showers in the morning.
.TUESDAY NIGHT...Winds variable less than 10 knots. Wind waves
4 feet. North swell 3 feet increasing to northwest 5 feet after
midnight.
.WEDNESDAY...Winds variable less than 10 knots. Wind waves
4 feet. Northwest swell 9 feet increasing to 12 feet in the
afternoon.
.WEDNESDAY NIGHT...Winds variable less than 10 knots. Wind waves
3 feet. Northwest swell 14 feet.
.THURSDAY...Southwest winds 10 knots becoming variable less than
10 knots. Wind waves 4 feet. Northwest swell 9 to 11 feet.
.FRIDAY...Winds variable less than 10 knots becoming northeast
15 knots. Wind waves 3 to 4 feet. Northwest swell 11 to 13 feet.
Scattered showers.

$$

PHZ111-210915-
Kauai Windward Waters-
1001 AM HST Mon Jan 20 2020

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

.REST OF TODAY...East winds 20 knots. Wind waves 7 feet. North
swell 6 feet. Scattered showers late in the morning, then
isolated showers in the afternoon.
.TONIGHT...East winds 15 knots. Wind waves 5 feet. North swell
5 feet. Isolated showers.
.TUESDAY...Southeast winds 10 knots. Wind waves 5 feet. North
swell 4 feet. Isolated showers in the morning.
.TUESDAY NIGHT...Winds variable less than 10 knots. Wind waves
4 feet. Northwest swell 4 feet.
.WEDNESDAY...Winds variable less than 10 knots. Wind waves
4 feet. Northwest swell 8 feet increasing to 12 feet in the
afternoon.
.WEDNESDAY NIGHT...Winds variable less than 10 knots. Wind waves
3 feet. Northwest swell 14 feet.
.THURSDAY...Winds variable less than 10 knots becoming southwest
10 knots in the afternoon, then becoming variable less than
10 knots. Wind waves 3 feet. Northwest swell 10 to 12 feet.
.FRIDAY...Winds variable less than 10 knots becoming northeast
15 knots. Wind waves 3 feet. Northwest swell 11 to 13 feet.
Isolated showers.

$$

PHZ112-210915-
Kauai Leeward Waters-
1001 AM HST Mon Jan 20 2020

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

.REST OF TODAY...East winds 20 knots. Wind waves 7 feet.
Northwest swell 5 feet. Isolated showers late in the morning.
.TONIGHT...East winds 15 knots. Wind waves 5 feet. Northwest
swell 5 feet.
.TUESDAY...Southeast winds 10 knots. Wind waves 4 feet. Northwest
swell 4 feet.
.TUESDAY NIGHT...Winds variable less than 10 knots. Wind waves
4 feet. Northwest swell 3 feet increasing to 5 feet after
midnight.
.WEDNESDAY...Winds variable less than 10 knots. Wind waves
3 feet. Northwest swell 8 feet increasing to 12 feet in the
afternoon.
.WEDNESDAY NIGHT...Winds variable less than 10 knots. Wind waves
2 feet or less. Northwest swell 13 feet.
.THURSDAY...Winds variable less than 10 knots becoming south
10 knots in the afternoon, then becoming variable less than
10 knots. Wind waves 2 feet or less. Northwest swell 9 to
11 feet.
.FRIDAY...Winds variable less than 10 knots becoming east
10 knots. Wind waves 2 feet or less. Northwest swell 11 to
13 feet. Isolated showers.

$$

PHZ113-210915-
Kauai Channel-
1001 AM HST Mon Jan 20 2020

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

.REST OF TODAY...East winds to 25 knots. Wind waves 7 feet.
Northwest swell 6 feet. Scattered showers late in the morning.
Isolated showers in the afternoon.
.TONIGHT...East winds 15 knots. Wind waves 5 feet. Northwest
swell 5 feet. Isolated showers.
.TUESDAY...Southeast winds 10 knots. Wind waves 5 feet. Northwest
swell 4 feet.
.TUESDAY NIGHT...Winds variable less than 10 knots. Wind waves
4 feet. Northwest swell 4 feet.
.WEDNESDAY...Winds variable less than 10 knots. Wind waves
3 feet. Northwest swell 7 feet increasing to 10 feet in the
afternoon.
.WEDNESDAY NIGHT...Winds variable less than 10 knots. Wind waves
3 feet. Northwest swell 13 feet.
.THURSDAY...Winds variable less than 10 knots. Wind waves 3 feet.
Northwest swell 9 to 11 feet.
.FRIDAY...Winds variable less than 10 knots becoming northeast
10 knots. Wind waves 3 feet. Northwest swell 9 to 11 feet.

$$

PHZ114-210915-
Oahu Windward Waters-
1001 AM HST Mon Jan 20 2020

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

.REST OF TODAY...East winds 20 knots. Wind waves 8 feet. North
swell 6 feet. Scattered showers late in the morning, then
isolated showers in the afternoon.
.TONIGHT...East winds 20 knots. Wind waves 6 feet. North swell
5 feet. Isolated showers.
.TUESDAY...Southeast winds 15 knots. Wind waves 6 feet. North
swell 4 feet. Isolated showers in the morning.
.TUESDAY NIGHT...Winds variable less than 10 knots. Wind waves
4 feet. Northwest swell 4 feet.
.WEDNESDAY...Winds variable less than 10 knots. Wind waves
4 feet. Northwest swell 7 feet increasing to 10 feet in the
afternoon.
.WEDNESDAY NIGHT...Winds variable less than 10 knots. Wind waves
3 feet. Northwest swell 13 feet. Isolated showers.
.THURSDAY...Winds variable less than 10 knots. Wind waves 3 feet.
Northwest swell 10 to 12 feet. Isolated showers.
.FRIDAY...Winds variable less than 10 knots becoming northeast
10 knots. Wind waves 3 feet. Northwest swell 10 to 12 feet.

$$

PHZ115-210915-
Oahu Leeward Waters-
1001 AM HST Mon Jan 20 2020

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

.REST OF TODAY...East winds 20 knots. Wind waves 7 feet.
Northwest swell 5 feet.
.TONIGHT...East winds 15 knots. Wind waves 5 feet. Northwest
swell 4 feet.
.TUESDAY...East winds 15 knots veering south in the afternoon.
Wind waves 4 feet. Northwest swell 4 feet.
.TUESDAY NIGHT...Winds variable less than 10 knots. Wind waves
3 feet. Northwest swell 3 feet.
.WEDNESDAY...Winds variable less than 10 knots. Wind waves 3 feet
in the morning then 2 feet or less. Northwest swell 5 feet
increasing to 8 feet in the afternoon.
.WEDNESDAY NIGHT...Winds variable less than 10 knots. Wind waves
2 feet or less. Northwest swell 11 feet.
.THURSDAY...Winds variable less than 10 knots. Wind waves 2 feet
or less. Northwest swell 8 to 10 feet.
.FRIDAY...Winds variable less than 10 knots becoming northeast
10 knots. Wind waves 3 feet. Northwest swell 8 to 10 feet.

$$

PHZ116-210915-
Kaiwi Channel-
1001 AM HST Mon Jan 20 2020

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

.REST OF TODAY...East winds to 25 knots. Wind waves 8 feet. North
swell 6 feet. Scattered showers late in the morning. Isolated
showers in the afternoon.
.TONIGHT...East winds 20 knots. Wind waves 6 feet. Northwest
swell 5 feet. Isolated showers.
.TUESDAY...Southeast winds 20 knots veering southwest in the
afternoon. Wind waves 6 feet. Northwest swell 4 feet. Isolated
showers in the morning.
.TUESDAY NIGHT...Winds variable less than 10 knots. Wind waves
4 feet. Northwest swell 4 feet.
.WEDNESDAY...Winds variable less than 10 knots. Wind waves
4 feet. Northwest swell 6 feet increasing to 9 feet in the
afternoon.
.WEDNESDAY NIGHT...Winds variable less than 10 knots. Wind waves
3 feet. Northwest swell 13 feet.
.THURSDAY...Winds variable less than 10 knots. Wind waves 3 feet.
Northwest swell 10 to 12 feet.
.FRIDAY...Winds variable less than 10 knots becoming northeast
15 knots. Wind waves 3 to 4 feet. Northwest swell 9 to 11 feet.

$$

PHZ117-210915-
Maui County Windward Waters-
1001 AM HST Mon Jan 20 2020

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

.REST OF TODAY...East winds to 25 knots. Wind waves 8 feet. North
swell 7 feet. Scattered showers late in the morning, then
isolated showers in the afternoon.
.TONIGHT...East winds 20 knots. Wind waves 6 feet. North swell
6 feet. Isolated showers.
.TUESDAY...Southeast winds 20 knots. Wind waves 6 feet. North
swell 5 feet. Isolated showers in the morning.
.TUESDAY NIGHT...Southeast winds 15 knots. Wind waves 5 feet.
North swell 4 feet.
.WEDNESDAY...Southeast winds 10 knots. Wind waves 4 feet.
Northwest swell 6 feet increasing to 9 feet in the afternoon.
.WEDNESDAY NIGHT...Southeast winds 10 knots. Wind waves 4 feet.
Northwest swell 13 feet. Isolated showers.
.THURSDAY...Winds variable less than 10 knots becoming southeast
10 knots after midnight. Wind waves 3 feet. Northwest swell 10 to
12 feet. Isolated showers.
.FRIDAY...East winds 10 knots. Wind waves 3 to 4 feet. Northwest
swell 9 to 11 feet.

$$

PHZ118-210915-
Maui County Leeward Waters-
1001 AM HST Mon Jan 20 2020

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

.REST OF TODAY...East winds to 25 knots. Wind waves 6 feet.
Northwest swell 4 feet.
.TONIGHT...East winds 20 knots. Wind waves 6 feet. Northwest
swell 4 feet.
.TUESDAY...East winds 20 knots. Wind waves 5 feet. Northwest
swell 3 feet.
.TUESDAY NIGHT...East winds 10 knots. Wind waves 3 feet.
Northwest swell 3 feet.
.WEDNESDAY...East winds 10 knots in the morning becoming variable
less than 10 knots. Wind waves 3 feet. Northwest swell 4 feet
increasing to 6 feet in the afternoon.
.WEDNESDAY NIGHT...Winds variable less than 10 knots. Wind waves
3 feet. Northwest swell 8 feet.
.THURSDAY...Winds variable less than 10 knots. Wind waves 2 feet
or less. Northwest swell 6 to 8 feet.
.FRIDAY...Winds variable less than 10 knots becoming northeast
10 knots. Wind waves 3 feet. Northwest swell 6 to 8 feet.

$$

PHZ119-210915-
Maalaea Bay-
1001 AM HST Mon Jan 20 2020

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

.REST OF TODAY...North winds to 25 knots. Wind waves 3 feet.
.TONIGHT...North winds 20 knots. Wind waves 3 feet.
.TUESDAY...North winds 10 knots. Wind waves 2 feet or less.
.TUESDAY NIGHT...Winds variable less than 10 knots. Wind waves
2 feet or less.
.WEDNESDAY...Winds variable less than 10 knots. Wind waves 2 feet
or less.
.WEDNESDAY NIGHT...Winds variable less than 10 knots. Wind waves
2 feet or less.
.THURSDAY...Winds variable less than 10 knots. Wind waves 2 feet
or less.
.FRIDAY...Winds variable less than 10 knots becoming north
15 knots. Wind waves 2 feet or less.

$$

PHZ120-210915-
Pailolo Channel-
1001 AM HST Mon Jan 20 2020

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

.REST OF TODAY...East winds to 25 knots. Wind waves 7 feet.
Northwest swell 5 feet. Isolated showers through the day.
.TONIGHT...East winds to 25 knots. Wind waves 6 feet. Northwest
swell 4 feet. Isolated showers.
.TUESDAY...Northeast winds 15 knots. Wind waves 5 feet. Northwest
swell 3 feet.
.TUESDAY NIGHT...Winds variable less than 10 knots. Wind waves
4 feet. Northwest swell 3 feet.
.WEDNESDAY...Winds variable less than 10 knots. Wind waves
3 feet. Northwest swell 3 feet increasing to 5 feet in the
afternoon.
.WEDNESDAY NIGHT...Winds variable less than 10 knots. Wind waves
3 feet. Northwest swell 8 feet.
.THURSDAY...Winds variable less than 10 knots. Wind waves 3 feet.
Northwest swell 6 to 8 feet.
.FRIDAY...Winds variable less than 10 knots becoming northeast
15 knots. Wind waves 3 to 4 feet. Northwest swell 5 to 7 feet.

$$

PHZ121-210915-
Alenuihaha Channel-
1001 AM HST Mon Jan 20 2020

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

.REST OF TODAY...East winds to 25 knots. Wind waves 7 feet.
Northwest swell 7 feet. Isolated showers.
.TONIGHT...East winds to 25 knots. Wind waves 8 feet. Northwest
swell 5 feet. Isolated showers.
.TUESDAY...East winds 20 knots. Wind waves 6 feet. Northwest
swell 4 feet.
.TUESDAY NIGHT...East winds 15 knots. Wind waves 5 feet.
Northwest swell 4 feet.
.WEDNESDAY...Southeast winds 10 knots in the morning becoming
variable less than 10 knots. Wind waves 4 feet. Northwest swell
4 feet increasing to 6 feet in the afternoon.
.WEDNESDAY NIGHT...East winds 10 knots. Wind waves 4 feet.
Northwest swell 11 feet. Isolated showers.
.THURSDAY...Northeast winds 10 knots in the morning becoming
variable less than 10 knots, then becoming east 10 knots after
midnight. Wind waves 3 feet. Northwest swell 9 to 11 feet.
.FRIDAY...Northeast winds 10 knots becoming east 20 knots after
midnight. Wind waves 3 to 5 feet. Northwest swell 8 to 10 feet.

$$

PHZ122-210915-
Big Island Windward Waters-
1001 AM HST Mon Jan 20 2020

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

.REST OF TODAY...East winds to 25 knots. Wind waves 6 feet. North
swell 7 feet. Scattered showers late in the morning, then
isolated showers in the afternoon.
.TONIGHT...East winds 20 knots. Wind waves 6 feet. North swell
6 feet. Isolated showers.
.TUESDAY...East winds 20 knots. Wind waves 6 feet. Northwest
swell 5 feet. Isolated showers in the morning.
.TUESDAY NIGHT...Southeast winds 15 knots. Wind waves 5 feet.
Northwest swell 4 feet.
.WEDNESDAY...Southeast winds 10 knots. Wind waves 4 feet.
Northwest swell 5 feet increasing to 7 feet in the afternoon.
.WEDNESDAY NIGHT...Southeast winds 10 knots. Wind waves 4 feet.
Northwest swell 12 feet. Isolated showers.
.THURSDAY...Southeast winds 10 knots. Wind waves 4 feet.
Northwest swell 10 to 12 feet. Isolated showers.
.FRIDAY...East winds 10 knots. Wind waves 4 to 5 feet. Northwest
swell 8 to 10 feet. Isolated showers.

$$

PHZ123-210915-
Big Island Leeward Waters-
1001 AM HST Mon Jan 20 2020

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

.REST OF TODAY...Winds variable less than 10 knots west of the
Big Island...east to 25 knots near South Point. Wind waves
8 feet. Northwest swell 4 feet.
.TONIGHT...Winds variable less than 10 knots west of the Big
Island...east to 25 knots near South Point. Wind waves 8 feet.
Northwest swell 4 feet.
.TUESDAY...Winds variable less than 10 knots west of the Big
Island...east 20 knots near South Point. Wind waves 7 feet.
Northwest swell 3 feet.
.TUESDAY NIGHT...Winds variable less than 10 knots west of the
Big Island...east 15 knots near South Point. Wind waves 6 feet.
Northwest swell 3 feet.
.WEDNESDAY...Winds variable less than 10 knots west of the Big
Island...east 10 knots near South Point. Wind waves 5 feet.
Northwest swell 3 feet.
.WEDNESDAY NIGHT...Winds variable less than 10 knots west of the
Big Island...east 15 knots near South Point. Wind waves 4 feet.
Northwest swell 7 feet. Isolated showers.
.THURSDAY...Winds variable less than 10 knots west of the Big
Island...east 10 knots near South Point. Wind waves 4 feet.
Northwest swell 7 to 8 feet.
.FRIDAY...West of the Big Island, winds variable less than
10 knots. Near South Point, east winds 10 knots rising to
20 knots after midnight. Wind waves 4 to 6 feet. Northwest swell
6 to 7 feet.

$$

PHZ124-210915-
Big Island Southeast Waters-
1001 AM HST Mon Jan 20 2020

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

.REST OF TODAY...Northeast winds to 25 knots. Wind waves 8 feet.
Northwest swell 6 feet. Isolated showers.
.TONIGHT...East winds to 25 knots. Wind waves 8 feet. Northwest
swell 5 feet. Isolated showers.
.TUESDAY...East winds 20 knots. Wind waves 7 feet. Northwest
swell 4 feet. Isolated showers in the morning.
.TUESDAY NIGHT...East winds 15 knots. Wind waves 6 feet.
Northwest swell 3 feet.
.WEDNESDAY...Northeast winds 10 knots. Wind waves 5 feet.
Northwest swell 3 feet.
.WEDNESDAY NIGHT...East winds 15 knots. Wind waves 5 feet.
Northwest swell 7 feet. Isolated showers.
.THURSDAY...East winds 10 knots. Wind waves 4 feet. Northwest
swell 7 to 8 feet. Isolated showers.
.FRIDAY...East winds 10 knots rising to 20 knots after midnight.
Wind waves 4 to 6 feet. Northwest swell 6 to 7 feet. Isolated
showers.

$$

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



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