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Oahu Surf Observation and Forecast/Coastal Forecast for Hawaiian Waters

338
FZHW50 PHFO 210138
CWFHFO

Coastal Waters Forecast
National Weather Service Honolulu HI
338 PM HST Sun Aug 20 2017

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

PHZ100-211445-
338 PM HST Sun Aug 20 2017

.Synopsis for Hawaiian coastal waters...
A surface high will remain far northeast of the area and weaken
through Tuesday. A new surface high will build far north of the
area on Monday. A low aloft will pass to the north and west of
Kauai tonight through Tuesday.

$$

PHZ110-211445-
Kauai Northwest Waters-
338 PM HST Sun Aug 20 2017

.TONIGHT...East winds 15 knots. Wind waves 5 feet. Showers likely
through the night. Slight chance of thunderstorms after midnight.
.MONDAY...East winds 15 knots. Wind waves 4 feet. Showers likely
and slight chance of thunderstorms.
.MONDAY NIGHT...East winds 15 knots. Wind waves 4 feet. Showers
likely and slight chance of thunderstorms.
.TUESDAY...East winds 15 knots. Wind waves 5 feet. Scattered
showers.
.TUESDAY NIGHT...East winds 20 knots. Wind waves 6 feet.
Scattered showers.
.WEDNESDAY...East winds 20 knots. Wind waves 7 feet. Scattered
showers.
.WEDNESDAY NIGHT...East winds 20 knots. Wind waves 7 feet.
Scattered showers.
.THURSDAY...East winds 20 knots. Wind waves 6 to 7 feet. Swell
east 3 feet. Scattered showers.
.FRIDAY...East winds 15 knots. Wind waves 6 feet. Swell east
3 feet. Scattered showers.

$$

PHZ111-211445-
Kauai Windward Waters-
338 PM HST Sun Aug 20 2017

.TONIGHT...East winds 15 knots. Wind waves 5 feet. Showers likely
through the night. Slight chance of thunderstorms after midnight.
.MONDAY...East winds 15 knots. Wind waves 4 feet. Showers likely
and slight chance of thunderstorms.
.MONDAY NIGHT...East winds 15 knots. Wind waves 4 feet. Showers
likely and slight chance of thunderstorms.
.TUESDAY...East winds 15 knots. Wind waves 5 feet. Showers likely
in the morning, then scattered showers in the afternoon.
.TUESDAY NIGHT...East winds 15 knots. Wind waves 6 feet.
Scattered showers in the evening, then showers likely after
midnight.
.WEDNESDAY...East winds 15 knots. Wind waves 7 feet. Scattered
showers.
.WEDNESDAY NIGHT...East winds 15 knots. Wind waves 7 feet.
Scattered showers.
.THURSDAY...East winds 15 knots. Wind waves 6 to 7 feet. Swell
east 3 feet. Scattered showers.
.FRIDAY...East winds 15 knots. Wind waves 5 feet. Swell east
3 feet. Scattered showers.

$$

PHZ112-211445-
Kauai Leeward Waters-
338 PM HST Sun Aug 20 2017

.TONIGHT...East winds 15 knots. Wind waves 4 feet. Scattered
showers through the night. Slight chance of thunderstorms after
midnight.
.MONDAY...East winds 10 knots. Wind waves 3 feet. Scattered
showers and slight chance of thunderstorms.
.MONDAY NIGHT...East winds 15 knots. Wind waves 4 feet. Scattered
showers and slight chance of thunderstorms.
.TUESDAY...East winds 15 knots. Wind waves 4 feet. Scattered
showers.
.TUESDAY NIGHT...East winds 15 knots. Wind waves 5 feet. South
swell 3 feet after midnight. Scattered showers.
.WEDNESDAY...East winds 20 knots. Wind waves 6 feet. South swell
3 feet. Scattered showers.
.WEDNESDAY NIGHT...East winds 20 knots. Wind waves 6 feet. South
swell 3 feet. Scattered showers.
.THURSDAY...East winds 20 knots. Wind waves 6 feet. Southeast
swell 3 feet. Scattered showers.
.FRIDAY...East winds 15 knots. Wind waves 6 feet. Southeast swell
3 feet. Isolated showers.

$$

PHZ113-211445-
Kauai Channel-
338 PM HST Sun Aug 20 2017

.TONIGHT...East winds 15 knots. Wind waves 5 feet. Scattered
showers.
.MONDAY...East winds 15 knots. Wind waves 4 feet. Scattered
showers through the day. Slight chance of thunderstorms in the
afternoon.
.MONDAY NIGHT...East winds 15 knots. Wind waves 4 feet. Slight
chance of thunderstorms in the evening. Scattered showers through
the night.
.TUESDAY...East winds 15 knots. Wind waves 5 feet. Scattered
showers.
.TUESDAY NIGHT...East winds 20 knots. Wind waves 6 feet.
Scattered showers.
.WEDNESDAY...East winds 20 knots. Wind waves 7 feet. South swell
3 feet. Scattered showers.
.WEDNESDAY NIGHT...East winds 20 knots. Wind waves 7 feet. South
swell 3 feet. Scattered showers in the evening, then isolated
showers after midnight.
.THURSDAY...East winds 20 knots. Wind waves 6 to 7 feet.
Southeast swell 3 feet and east 3 feet. Isolated showers.
.FRIDAY...East winds 15 knots. Wind waves 6 feet. Southeast swell
3 feet and east 3 feet. Isolated showers.

$$

PHZ114-211445-
Oahu Windward Waters-
338 PM HST Sun Aug 20 2017

.TONIGHT...East winds 15 knots. Wind waves 5 feet. Showers likely
through the night. Slight chance of thunderstorms after midnight.
.MONDAY...East winds 15 knots. Wind waves 4 feet. Showers likely
and slight chance of thunderstorms.
.MONDAY NIGHT...East winds 15 knots. Wind waves 4 feet. Showers
likely.
.TUESDAY...East winds 15 knots. Wind waves 5 feet. Showers likely
in the morning, then scattered showers in the afternoon.
.TUESDAY NIGHT...East winds 20 knots. Wind waves 6 feet. Showers
likely.
.WEDNESDAY...East winds 20 knots. Wind waves 7 feet. Scattered
showers.
.WEDNESDAY NIGHT...East winds 20 knots. Wind waves 7 feet.
Scattered showers.
.THURSDAY...East winds 20 knots. Wind waves 7 feet. Swell east
3 feet. Scattered showers.
.FRIDAY...East winds 15 knots. Wind waves 6 feet. Swell east
3 feet. Scattered showers.

$$

PHZ115-211445-
Oahu Leeward Waters-
338 PM HST Sun Aug 20 2017

.TONIGHT...East winds 15 knots. Wind waves 5 feet. Isolated
showers in the evening, then scattered showers after midnight.
.MONDAY...East winds 15 knots. Wind waves 3 feet. Scattered
showers.
.MONDAY NIGHT...East winds 15 knots. Wind waves 4 feet. Slight
chance of thunderstorms in the evening. Scattered showers through
the night.
.TUESDAY...East winds 15 knots. Wind waves 4 feet. Scattered
showers in the morning, then isolated showers in the afternoon.
.TUESDAY NIGHT...East winds 15 knots. Wind waves 5 feet.
Scattered showers.
.WEDNESDAY...East winds 15 knots. Wind waves 6 feet. Scattered
showers.
.WEDNESDAY NIGHT...Northeast winds 20 knots. Wind waves 6 feet.
South swell 3 feet. Isolated showers.
.THURSDAY...East winds 20 knots. Wind waves 6 feet. Southeast
swell 3 feet and east 3 feet. Isolated showers.
.FRIDAY...East winds 15 knots. Wind waves 6 feet. Southeast swell
3 feet and east 3 feet. Isolated showers.

$$

PHZ116-211445-
Kaiwi Channel-
338 PM HST Sun Aug 20 2017

.TONIGHT...East winds 15 knots. Wind waves 5 feet. Showers likely
in the evening, then scattered showers after midnight.
.MONDAY...Northeast winds 15 knots. Wind waves 4 feet. Scattered
showers.
.MONDAY NIGHT...East winds 15 knots. Wind waves 5 feet. Slight
chance of thunderstorms in the evening. Scattered showers through
the night.
.TUESDAY...East winds 15 knots. Wind waves 5 feet. Scattered
showers.
.TUESDAY NIGHT...East winds 20 knots. Wind waves 6 feet. Showers
likely in the evening, then scattered showers after midnight.
.WEDNESDAY...East winds 20 knots. Wind waves 7 feet. Scattered
showers in the morning, then isolated showers in the afternoon.
.WEDNESDAY NIGHT...East winds 20 knots. Wind waves 7 feet.
Scattered showers in the evening, then isolated showers after
midnight.
.THURSDAY...East winds 20 knots. Wind waves 7 feet. Swell east
3 feet. Isolated showers.
.FRIDAY...East winds 20 knots. Wind waves 6 to 7 feet. Swell east
3 feet. Isolated showers.

$$

PHZ117-211445-
Maui County Windward Waters-
338 PM HST Sun Aug 20 2017

.TONIGHT...East winds 15 knots. Wind waves 5 feet. Showers likely
through the night. Slight chance of thunderstorms after midnight.
.MONDAY...East winds 15 knots. Wind waves 4 feet. Slight chance
of thunderstorms in the morning. Showers likely through the day.
.MONDAY NIGHT...East winds 15 knots. Wind waves 4 feet. Showers
likely.
.TUESDAY...East winds 15 knots. Wind waves 5 feet. Showers
likely.
.TUESDAY NIGHT...East winds 15 knots. Wind waves 6 feet. Showers
likely in the evening, then occasional showers after midnight.
.WEDNESDAY...East winds 20 knots. Wind waves 7 feet. Scattered
showers.
.WEDNESDAY NIGHT...East winds 20 knots. Wind waves 7 feet.
Scattered showers in the evening, then isolated showers after
midnight.
.THURSDAY...East winds 20 knots. Wind waves 7 feet. Swell east
3 feet. Scattered showers.
.FRIDAY...East winds 15 knots. Wind waves 6 feet. Swell east
3 feet. Scattered showers.

$$

PHZ118-211445-
Maui County Leeward Waters-
338 PM HST Sun Aug 20 2017

.TONIGHT...Northeast winds 15 knots. Wind waves 4 feet. Isolated
showers in the evening, then scattered showers after midnight.
.MONDAY...Northeast winds 10 knots. Wind waves 4 feet. Scattered
showers.
.MONDAY NIGHT...East winds 10 knots. Wind waves 4 feet. Scattered
showers and slight chance of thunderstorms in the evening, then
isolated showers after midnight.
.TUESDAY...East winds 10 knots. Wind waves 5 feet. Scattered
showers in the morning, then isolated showers in the afternoon.
.TUESDAY NIGHT...Northeast winds 15 knots. Wind waves 5 feet.
Isolated showers.
.WEDNESDAY...Northeast winds 15 knots. Wind waves 6 feet.
Scattered showers in the morning, then isolated showers in the
afternoon.
.WEDNESDAY NIGHT...Northeast winds 15 knots. Wind waves 6 feet.
Isolated showers.
.THURSDAY...Northeast winds 15 knots. Wind waves 6 feet. Isolated
showers.
.FRIDAY...Northeast winds 15 knots. Wind waves 4 to 5 feet.
Isolated showers.

$$

PHZ119-211445-
Maalaea Bay-
338 PM HST Sun Aug 20 2017

.TONIGHT...North winds 20 knots. Wind waves 2 feet or less.
Isolated showers in the evening.
.MONDAY...North winds 20 knots. Wind waves 2 feet or less.
Scattered showers in the afternoon.
.MONDAY NIGHT...Northeast winds 20 knots. Wind waves 2 feet or
less. Scattered showers in the evening, then isolated showers
after midnight.
.TUESDAY...Northeast winds 20 knots. Wind waves 2 feet or less.
Scattered showers in the morning, then isolated showers in the
afternoon.
.TUESDAY NIGHT...Northeast winds 20 knots. Wind waves 2 feet or
less. Isolated showers through the night.
.WEDNESDAY...North winds to 25 knots. Wind waves 2 feet or less.
.WEDNESDAY NIGHT...North winds to 25 knots. Wind waves 2 feet or
less then 3 feet after midnight.
.THURSDAY...Northeast winds to 25 knots. Wind waves 3 feet.
.FRIDAY...Northeast winds to 25 knots. Wind waves 6 to 7 feet.

$$

PHZ120-211445-
Pailolo Channel-
338 PM HST Sun Aug 20 2017

.TONIGHT...East winds 20 knots. Wind waves 5 feet. Scattered
showers.
.MONDAY...East winds 15 knots. Wind waves 4 feet. Scattered
showers.
.MONDAY NIGHT...East winds 20 knots. Wind waves 4 feet. Scattered
showers in the evening, then isolated showers after midnight.
.TUESDAY...East winds 20 knots. Wind waves 5 feet. Scattered
showers.
.TUESDAY NIGHT...East winds 20 knots. Wind waves 5 feet. Isolated
showers.
.WEDNESDAY...East winds to 25 knots. Wind waves 7 feet. Scattered
showers in the morning, then isolated showers in the afternoon.
.WEDNESDAY NIGHT...East winds to 25 knots. Wind waves 7 feet.
Scattered showers in the evening. Isolated showers after
midnight.
.THURSDAY...East winds to 25 knots. Wind waves 6 feet. Swell east
3 feet. Isolated showers.
.FRIDAY...East winds to 25 knots. Wind waves 10 feet. Swell east
3 feet. Isolated showers.

$$

PHZ121-211445-
Alenuihaha Channel-
338 PM HST Sun Aug 20 2017

.TONIGHT...East winds 20 knots. Wind waves 6 feet. Isolated
showers.
.MONDAY...East winds 20 knots. Wind waves 5 feet. Isolated
showers.
.MONDAY NIGHT...East winds 20 knots. Wind waves 5 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 7 feet.
Scattered showers in the evening, then isolated showers after
midnight.
.WEDNESDAY...East winds to 25 knots. Wind waves 8 feet. Scattered
showers in the morning, then isolated showers in the afternoon.
.WEDNESDAY NIGHT...East winds to 25 knots. Wind waves 8 feet.
Isolated showers.
.THURSDAY...East winds to 25 knots. Wind waves 8 feet. Swell east
3 feet. Isolated showers.
.FRIDAY...East winds to 25 knots. Wind waves 10 to 11 feet. Swell
east 3 feet. Isolated showers.

$$

PHZ122-211445-
Big Island Windward Waters-
338 PM HST Sun Aug 20 2017

.TONIGHT...East winds 15 knots. Wind waves 5 feet. Showers
likely.
.MONDAY...East winds 15 knots. Wind waves 4 feet. Showers likely.
.MONDAY NIGHT...East winds 15 knots. Wind waves 4 feet. Showers
likely.
.TUESDAY...East winds 15 knots. Wind waves 5 feet. Occasional
showers in the morning, then showers likely in the afternoon.
.TUESDAY NIGHT...East winds 15 knots. Wind waves 5 feet.
Occasional showers.
.WEDNESDAY...East winds 15 knots. Wind waves 7 feet. Swell east
3 feet. Scattered showers in the morning, then isolated showers
in the afternoon.
.WEDNESDAY NIGHT...East winds 20 knots. Wind waves 7 feet.
Scattered showers in the evening, then isolated showers after
midnight.
.THURSDAY...East winds 15 knots. Wind waves 6 feet. Swell east
3 feet. Scattered showers.
.FRIDAY...East winds 15 knots. Wind waves 5 feet. Swell east
3 feet. Scattered showers.

$$

PHZ123-211445-
Big Island Leeward Waters-
338 PM HST Sun Aug 20 2017

.TONIGHT...Winds variable less than 10 knots west of the Big
Island...east 20 knots near South Point. Wind waves 5 feet. Haze.
Isolated showers.
.MONDAY...Winds variable less than 10 knots west of the Big
Island...east 15 knots near South Point. Wind waves 5 feet. Haze.
Isolated showers.
.MONDAY NIGHT...Winds variable less than 10 knots west of the Big
Island...east 15 knots near South Point. Wind waves 5 feet. Haze.
Isolated showers.
.TUESDAY...Winds variable less than 10 knots west of the Big
Island...east 20 knots near South Point. Wind waves 7 feet. Haze.
Isolated showers.
.TUESDAY NIGHT...Winds variable less than 10 knots west of the
Big Island...east 20 knots near South Point. Wind waves 8 feet.
Haze. Scattered showers.
.WEDNESDAY...Winds variable less than 10 knots west of the Big
Island...east to 25 knots near South Point. Wind waves 9 feet.
South swell 3 feet. Haze through the day. Isolated showers
through the day.
.WEDNESDAY NIGHT...Winds variable less than 10 knots west of the
Big Island...east to 25 knots near South Point. Wind waves
9 feet. South swell 3 feet. Haze. Isolated showers.
.THURSDAY...Winds variable less than 10 knots west of the Big
Island...east to 25 knots near South Point. Wind waves 9 feet.
Southeast swell 3 feet and east 3 feet. Haze. Isolated showers.
.FRIDAY...Winds variable less than 10 knots west of the Big
Island...east to 25 knots near South Point. Wind waves 9 feet.
Southeast swell 3 feet and east 3 feet. Haze. Isolated showers.

$$

PHZ124-211445-
Big Island Southeast Waters-
338 PM HST Sun Aug 20 2017

.TONIGHT...Northeast winds 20 knots. Wind waves 5 feet. Showers
likely.
.MONDAY...Northeast winds 15 knots. Wind waves 5 feet. Showers
likely in the morning, then scattered showers in the afternoon.
.MONDAY NIGHT...Northeast winds 20 knots. Wind waves 5 feet.
Scattered showers in the evening, then showers likely after
midnight.
.TUESDAY...Northeast winds 20 knots. Wind waves 6 feet.
Occasional showers in the morning, then showers likely in the
afternoon.
.TUESDAY NIGHT...Northeast winds 20 knots. Wind waves 7 feet.
Occasional showers.
.WEDNESDAY...East winds to 25 knots. Wind waves 8 feet. Southeast
swell 3 feet and east 3 feet. Scattered showers.
.WEDNESDAY NIGHT...East winds to 25 knots. Wind waves 9 feet.
South swell 3 feet. Scattered showers.
.THURSDAY...East winds to 25 knots. Wind waves 8 to 9 feet.
Southeast swell 3 feet and east 3 feet. Scattered showers.
.FRIDAY...Northeast winds to 25 knots. Wind waves 9 to 10 feet.
Southeast swell 3 feet and east 3 feet. Isolated showers.

$$

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



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