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Menu of Text Products for the Hawaiian Islands and the Tropical Pacific/Atlantic Oceans:
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Select Product Type: All | Routine Bulletins/FCSTS | Warnings/Watches/Advisories | HAWN Weather | Tropical | Marine | Aviation | Daily Obs | Special
Oahu Surf Observation and Forecast/Coastal Forecast for Hawaiian Waters

997
FZHW50 PHFO 212135
CWFHFO

Coastal Waters Forecast
NATIONAL WEATHER SERVICE Honolulu HI
1135 AM HST Tue Aug 21 2018

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

PHZ100-221045-
1135 AM HST Tue Aug 21 2018

.Synopsis for Hawaiian coastal waters...
Hurricane Lane, centered near 14.3N 153.0W at 10 AM HST, is
moving west-northwest at 8 kt. Lane is forecast to track towards
the Hawaiian Islands Wednesday and Thursday, potentially bringing
dangerously strong winds, rough seas and large swells. A
Hurricane Watch is in effect for waters around the Big Island and
Maui county. Otherwise, breezy trade winds will continue through
tonight.

$$

PHZ110-221045-
Kauai Northwest Waters-
1135 AM HST Tue Aug 21 2018

.REST OF TODAY...East winds 20 knots. Wind waves 5 feet. Swell
north 4 to 5 feet. Isolated showers late in the morning, then
scattered showers in the afternoon.
.TONIGHT...East winds 20 knots. Wind waves 6 feet. Swell north
5 feet. Scattered showers.
.WEDNESDAY...East winds 20 knots. Wind waves 6 feet. Mixed swell
southeast 3 feet and north 5 feet. Scattered showers.
.WEDNESDAY NIGHT...East winds 20 knots. Wind waves 7 feet. Mixed
swell southeast 3 feet and north 5 feet. Scattered heavy showers.
.THURSDAY...East winds 25 knots. Wind waves 8 feet. Mixed swell
southeast 3 feet and north 4 to 5 feet. Numerous heavy showers in
the morning, then frequent heavy showers in the afternoon.
.THURSDAY NIGHT... Tropical storm conditions possible. Frequent
heavy showers.
.FRIDAY... Tropical storm conditions possible. Frequent heavy
showers in the morning, then heavy rain and thunderstorms in the
afternoon.
.FRIDAY NIGHT... Tropical storm conditions possible. Heavy rain
and thunderstorms.
.SATURDAY... Tropical storm conditions possible. Heavy rain and
thunderstorms in the morning, then occasional showers in the
afternoon.

$$

PHZ111-221045-
Kauai Windward Waters-
1135 AM HST Tue Aug 21 2018

.REST OF TODAY...East winds 20 knots. Wind waves 6 feet. Swell
north 4 to 5 feet. Isolated showers late in the morning, then
scattered showers in the afternoon.
.TONIGHT...East winds 20 knots. Wind waves 6 feet. Southeast
swell 3 feet after midnight. Swell north 5 feet. Scattered
showers.
.WEDNESDAY...East winds 20 knots. Wind waves 6 feet. Mixed swell
southeast 3 feet and north 5 feet. Scattered showers.
.WEDNESDAY NIGHT...East winds 20 knots. Wind waves 7 feet. Mixed
swell southeast 4 feet and north 5 feet. Scattered heavy showers
in the evening, then numerous heavy showers after midnight.
.THURSDAY...East winds 25 knots. Wind waves 8 feet. Mixed swell
southeast 5 feet and north 4 to 5 feet. Frequent heavy showers.
.THURSDAY NIGHT... Tropical storm conditions possible. Frequent
heavy showers.
.FRIDAY... Hurricane conditions possible. Heavy rain and
thunderstorms.
.FRIDAY NIGHT... Tropical storm conditions possible. Heavy rain
and thunderstorms.
.SATURDAY... Tropical storm conditions possible. Heavy rain and
thunderstorms in the morning, then occasional showers in the
afternoon.

$$

PHZ112-221045-
Kauai Leeward Waters-
1135 AM HST Tue Aug 21 2018

.REST OF TODAY...East winds 20 knots. Wind waves 6 feet.
Southeast swell 3 feet in the afternoon. Swell north 4 to 5 feet.
Scattered showers in the afternoon.
.TONIGHT...East winds 20 knots. Wind waves 7 feet. Mixed swell
southeast 3 feet and north 5 feet. Scattered showers.
.WEDNESDAY...East winds 25 knots. Wind waves 7 feet. Mixed swell
southeast 4 feet and north 5 feet. Scattered showers in the
morning, then isolated showers in the afternoon.
.WEDNESDAY NIGHT...East winds 25 knots. Wind waves 7 feet. Mixed
swell southeast 4 feet and north 5 feet. Scattered heavy showers.
.THURSDAY...Northeast winds 25 knots. Wind waves 8 feet. Mixed
swell southeast 4 feet and north 4 to 5 feet. Numerous heavy
showers in the morning, then frequent heavy showers in the
afternoon.
.THURSDAY NIGHT... Tropical storm conditions possible. Frequent
heavy showers.
.FRIDAY... Tropical storm conditions possible. Heavy rain and
thunderstorms.
.FRIDAY NIGHT... Hurricane conditions possible. Heavy rain and
thunderstorms.
.SATURDAY... Tropical storm conditions possible. Heavy rain and
thunderstorms in the morning, then occasional showers in the
afternoon.

$$

PHZ113-221045-
Kauai Channel-
1135 AM HST Tue Aug 21 2018

.REST OF TODAY...Northeast winds 20 knots. Wind waves 6 feet.
Mixed swell southeast 3 feet and north 4 feet. Isolated showers
late in the morning, then scattered showers in the afternoon.
.TONIGHT...East winds 20 knots. Wind waves 7 feet. Mixed swell
southeast 3 feet and north 4 to 5 feet. Scattered showers.
.WEDNESDAY...East winds 25 knots. Wind waves 7 feet. Mixed swell
southeast 5 feet and north 5 feet. Isolated showers.
.WEDNESDAY NIGHT...Northeast winds 25 knots. Wind waves 8 feet.
Mixed swell southeast 6 feet and north 5 feet. Scattered heavy
showers in the evening, then numerous heavy showers after
midnight.
.THURSDAY... Tropical storm conditions possible. Northeast winds
25 knots. Wind waves 9 feet. Mixed swell southeast 6 feet and
north 4 to 5 feet. Frequent heavy showers.
.THURSDAY NIGHT... Hurricane conditions possible. Frequent heavy
showers in the evening, then heavy rain and thunderstorms after
midnight.
.FRIDAY... Hurricane conditions possible. Heavy rain and
thunderstorms.
.FRIDAY NIGHT... Hurricane conditions possible. Heavy rain and
thunderstorms.
.SATURDAY... Tropical storm conditions possible. Heavy rain and
thunderstorms in the morning, then occasional showers in the
afternoon.

$$

PHZ114-221045-
Oahu Windward Waters-
1135 AM HST Tue Aug 21 2018

.REST OF TODAY...East winds 20 knots. Wind waves 7 feet. Mixed
swell southeast 3 feet and north 4 to 5 feet. Isolated showers
late in the morning, then scattered showers in the afternoon.
.TONIGHT...East winds 20 knots. Wind waves 7 feet. Mixed swell
southeast 3 feet and north 5 feet. Scattered showers.
.WEDNESDAY...East winds 25 knots. Wind waves 7 feet. Mixed swell
southeast 3 feet and north 5 feet. Scattered showers.
.WEDNESDAY NIGHT...East winds 25 knots. Wind waves 8 feet. Mixed
swell southeast 3 feet and north 5 feet. Scattered heavy showers
in the evening, then frequent heavy showers after midnight.
.THURSDAY... Tropical storm conditions possible. East winds
25 knots. Wind waves 9 feet. Mixed swell south 3 feet and north
4 to 5 feet. Frequent heavy showers.
.THURSDAY NIGHT... Hurricane conditions possible. Frequent heavy
showers in the evening, then heavy rain and thunderstorms after
midnight.
.FRIDAY... Hurricane conditions possible. Heavy rain and
thunderstorms.
.FRIDAY NIGHT... Tropical storm conditions possible. Heavy rain
and thunderstorms.
.SATURDAY... Tropical storm conditions possible. Heavy rain and
thunderstorms in the morning, then occasional showers in the
afternoon.

$$

PHZ115-221045-
Oahu Leeward Waters-
1135 AM HST Tue Aug 21 2018

.REST OF TODAY...Northeast winds 25 knots. Wind waves 7 feet.
Mixed swell southeast 3 feet and north 3 to 4 feet. Isolated
showers in the afternoon.
.TONIGHT...Northeast winds 20 knots. Wind waves 7 feet. Mixed
swell southeast 3 feet and north 4 to 5 feet. Isolated showers.
.WEDNESDAY...Northeast winds 25 knots. Wind waves 6 feet. Mixed
swell southeast 5 feet and north 4 to 5 feet. Isolated showers.
.WEDNESDAY NIGHT...Northeast winds 25 knots. Wind waves 8 feet.
Mixed swell southeast 6 feet and north 4 feet. Scattered heavy
showers in the evening, then numerous heavy showers after
midnight.
.THURSDAY... Tropical storm conditions possible. Northeast winds
25 knots. Gusts up to 35 knots in the morning. Wind waves 9 feet.
Southeast swell 7 feet and north 3 to 4 feet. Frequent heavy
showers.
.THURSDAY NIGHT... Hurricane conditions possible. Heavy rain and
thunderstorms.
.FRIDAY... Hurricane conditions possible. Heavy rain and
thunderstorms.
.FRIDAY NIGHT... Tropical storm conditions possible. Heavy rain
and thunderstorms.
.SATURDAY... Tropical storm conditions possible. Heavy rain and
thunderstorms in the morning, then occasional showers in the
afternoon.

$$

PHZ116-221045-
Kaiwi Channel-
1135 AM HST Tue Aug 21 2018

.REST OF TODAY...Northeast winds 25 knots. Wind waves 7 feet.
Swell north 3 to 4 feet. Isolated showers through the day.
.TONIGHT...East winds 20 knots. Wind waves 7 feet. Mixed swell
southeast 3 feet and north 4 to 5 feet. Scattered showers in the
evening, then isolated showers after midnight.
.WEDNESDAY...East winds 25 knots. Wind waves 7 feet. Mixed swell
southeast 4 feet and north 4 to 5 feet. Isolated showers.
.WEDNESDAY NIGHT...Northeast winds 25 knots. Gusts up to 35 knots
after midnight. Wind waves 8 feet. Mixed swell southeast 4 feet
and north 4 feet. Numerous heavy showers.
.THURSDAY... Tropical storm conditions possible. Northeast winds
25 knots. Gusts up to 35 knots in the morning. Wind waves 9 feet.
Mixed swell south 5 feet and north 3 to 4 feet. Frequent heavy
showers.
.THURSDAY NIGHT... Hurricane conditions possible. Heavy rain and
thunderstorms.
.FRIDAY... Hurricane conditions possible. Heavy rain and
thunderstorms.
.FRIDAY NIGHT... Tropical storm conditions possible. Heavy rain
and thunderstorms in the evening, then occasional showers after
midnight.
.SATURDAY...East winds 30 knots. Wind waves 12 feet. Southeast
swell 3 feet in the morning. Occasional showers.

$$

PHZ117-221045-
Maui County Windward Waters-
1135 AM HST Tue Aug 21 2018

...HURRICANE WATCH IN EFFECT...

.REST OF TODAY... East winds 25 knots. Wind waves 7 feet. Mixed
swell southeast 3 feet and north 3 to 4 feet. Isolated showers.
.TONIGHT...East winds 20 knots. Wind waves 7 feet. Mixed swell
southeast 3 feet and north 4 to 5 feet. Scattered showers.
.WEDNESDAY... Tropical storm conditions possible with hurricane
conditions also possible. East winds 25 knots. Wind waves 7 feet.
Mixed swell southeast 3 feet and north 5 feet. Scattered showers.
.WEDNESDAY NIGHT... Tropical storm conditions possible with
hurricane conditions also possible. East winds 25 knots. Wind
waves 8 feet. Mixed swell southeast 3 feet and north 5 feet.
Frequent heavy showers.
.THURSDAY... Tropical storm conditions possible. East winds
25 knots. Gusts up to 35 knots in the morning. Wind waves 9 feet.
Mixed swell southeast 3 feet and north 4 to 5 feet. Frequent
heavy showers.
.THURSDAY NIGHT... Hurricane conditions possible. Frequent heavy
showers in the evening, then heavy rain and thunderstorms after
midnight.
.FRIDAY... Hurricane conditions possible. Heavy rain and
thunderstorms.
.FRIDAY NIGHT... Tropical storm conditions possible. Occasional
showers.
.SATURDAY...East winds 30 knots. Wind waves 12 feet. Mixed swell
southeast 3 feet and north 3 feet in the morning. Occasional
showers.

$$

PHZ118-221045-
Maui County Leeward Waters-
1135 AM HST Tue Aug 21 2018

...HURRICANE WATCH IN EFFECT...

.REST OF TODAY... Northeast winds 25 knots. Wind waves 6 feet.
Swell north 3 feet. Isolated showers in the afternoon.
.TONIGHT... Northeast winds 25 knots. Wind waves 6 feet.
Southeast swell 3 feet after midnight. Swell north 3 to 4 feet.
Isolated showers through the night.
.WEDNESDAY... Tropical storm conditions possible with hurricane
conditions also possible. Northeast winds 25 knots. Wind waves
6 feet. Mixed swell southeast 4 feet and north 4 feet. Isolated
showers.
.WEDNESDAY NIGHT... Tropical storm conditions possible with
hurricane conditions also possible. Northeast winds 25 knots.
Wind waves 7 feet. Mixed swell southeast 4 feet and north 4 feet.
Numerous heavy showers.
.THURSDAY... Hurricane conditions possible. Northeast winds
30 knots. Gusts up to 45 knots. Wind waves 10 feet. Mixed swell
southeast 5 feet and north 3 to 4 feet. Numerous heavy showers in
the morning, then heavy rain and thunderstorms in the afternoon.
.THURSDAY NIGHT... Hurricane conditions possible. Heavy rain and
thunderstorms.
.FRIDAY... Hurricane conditions possible. Heavy rain and
thunderstorms.
.FRIDAY NIGHT... Tropical storm conditions possible. Heavy rain
and thunderstorms in the evening, then occasional showers after
midnight.
.SATURDAY...Southeast winds 15 knots. Wind waves 6 feet.
Occasional showers in the morning, then showers likely in the
afternoon.

$$

PHZ119-221045-
Maalaea Bay-
1135 AM HST Tue Aug 21 2018

...HURRICANE WATCH IN EFFECT...

.REST OF TODAY...Northeast winds 20 knots. Wind waves 3 feet.
.TONIGHT...Northeast winds 20 knots. Wind waves 3 feet. Isolated
showers after midnight.
.WEDNESDAY...Northeast winds 20 knots. Wind waves 3 feet.
Isolated showers in the morning.
.WEDNESDAY NIGHT...Northeast winds 20 knots. Wind waves 3 feet.
Numerous heavy showers.
.THURSDAY... Tropical storm conditions possible. East winds
20 knots. Wind waves 4 feet. South swell 3 feet in the afternoon.
Numerous heavy showers.
.THURSDAY NIGHT... Hurricane conditions possible. Heavy rain and
thunderstorms.
.FRIDAY... Tropical storm conditions possible. Heavy rain and
thunderstorms.
.FRIDAY NIGHT... Tropical storm conditions possible. Southeast
winds 15 knots. Wind waves 4 feet. Showers likely.
.SATURDAY...Southeast winds 15 knots. Wind waves 4 feet. Showers
likely.

$$

PHZ120-221045-
Pailolo Channel-
1135 AM HST Tue Aug 21 2018

...HURRICANE WATCH IN EFFECT...

.REST OF TODAY...Northeast winds 25 knots. Wind waves 6 feet.
Swell north 3 to 4 feet. Isolated showers in the afternoon.
.TONIGHT...East winds 25 knots. Gusts up to 35 knots in the
evening. Wind waves 6 feet. Swell north 4 feet. Scattered showers
in the evening, then isolated showers after midnight.
.WEDNESDAY... Tropical storm conditions possible with hurricane
conditions also possible. East winds 25 knots. Wind waves 6 feet.
Swell north 4 feet. Isolated showers in the morning. Scattered
showers in the afternoon.
.WEDNESDAY NIGHT... Tropical storm conditions possible with
hurricane conditions also possible. East winds 25 knots. Wind
waves 7 feet. South swell 3 feet after midnight. Swell north
4 feet. Numerous heavy showers.
.THURSDAY... Tropical storm conditions possible. East winds
30 knots. Wind waves 8 feet. Mixed swell south 3 feet and north
3 to 4 feet. Frequent heavy showers in the morning, then numerous
heavy showers in the afternoon.
.THURSDAY NIGHT... Hurricane conditions possible. Heavy rain and
thunderstorms.
.FRIDAY... Hurricane conditions possible. Heavy rain and
thunderstorms.
.FRIDAY NIGHT... Tropical storm conditions possible. Showers
likely.
.SATURDAY...Southeast winds 15 knots. Wind waves 8 feet.
Occasional showers.

$$

PHZ121-221045-
Alenuihaha Channel-
1135 AM HST Tue Aug 21 2018

...HURRICANE WATCH IN EFFECT...

.REST OF TODAY... East winds 30 knots. Wind waves 8 feet. Mixed
swell southeast 3 feet and north 3 to 4 feet. Isolated showers.
.TONIGHT...East winds 30 knots. Wind waves 9 feet. Mixed swell
southeast 3 feet and north 4 feet. Scattered showers in the
evening, then isolated showers after midnight.
.WEDNESDAY... Tropical storm conditions possible with hurricane
conditions also possible. East winds 30 knots. Wind waves 9 feet.
Mixed swell southeast 4 feet and north 4 feet. Isolated showers.
.WEDNESDAY NIGHT... Tropical storm conditions possible with
hurricane conditions also possible. East winds 25 knots. Wind
waves 9 feet. Mixed swell southeast 4 feet and north 4 feet.
Numerous heavy showers.
.THURSDAY... Hurricane conditions possible. East winds 35 knots.
Wind waves 13 feet. Mixed swell southeast 5 feet and north 3 to
4 feet. Numerous heavy showers in the morning, then heavy rain
and thunderstorms in the afternoon.
.THURSDAY NIGHT... Hurricane conditions possible. Heavy rain and
thunderstorms.
.FRIDAY... Hurricane conditions possible. Heavy rain and
thunderstorms.
.FRIDAY NIGHT... Tropical storm conditions possible. Occasional
showers.
.SATURDAY...Southeast winds 25 knots. Wind waves 9 feet.
Occasional showers.

$$

PHZ122-221045-
Big Island Windward Waters-
1135 AM HST Tue Aug 21 2018

...HURRICANE WATCH IN EFFECT...

.REST OF TODAY...Northeast winds 25 knots. Wind waves 6 feet.
Mixed swell southeast 5 feet and north 3 to 4 feet. Scattered
showers late in the morning, then isolated showers in the
afternoon.
.TONIGHT...East winds 20 knots. Wind waves 6 feet. Mixed swell
southeast 6 feet and north 4 to 5 feet. Scattered showers in the
evening, then showers likely after midnight.
.WEDNESDAY...East winds 20 knots. Wind waves 6 feet. Mixed swell
southeast 6 feet and north 5 to 6 feet. Showers likely.
.WEDNESDAY NIGHT... Tropical storm conditions possible with
hurricane conditions also possible. East winds 20 knots. Wind
waves 7 feet. Mixed swell southeast 5 feet and north 6 feet.
Frequent heavy showers.
.THURSDAY... Tropical storm conditions possible. East winds
25 knots. Wind waves 10 feet. Mixed swell southeast 4 feet and
north 5 to 6 feet. Frequent heavy showers.
.THURSDAY NIGHT... Tropical storm conditions possible. Frequent
heavy showers.
.FRIDAY... Tropical storm conditions possible. Frequent heavy
showers.
.FRIDAY NIGHT...East winds 25 knots. Wind waves 12 feet. Mixed
swell southeast 3 feet and north 4 feet. Occasional showers.
.SATURDAY...East winds 25 knots. Wind waves 9 feet. Southeast
swell 3 feet in the morning. Swell north 3 to 4 feet. Occasional
showers in the morning, then showers likely in the afternoon.

$$

PHZ123-221045-
Big Island Leeward Waters-
1135 AM HST Tue Aug 21 2018

...HURRICANE WATCH IN EFFECT...

.REST OF TODAY...Northeast winds 25 knots. Wind waves 9 feet.
Southeast swell 3 feet. Isolated showers.
.TONIGHT... East winds 25 knots. Wind waves 8 feet. Southeast
swell 5 feet. Haze through the night. Scattered showers in the
evening. Isolated showers after midnight.
.WEDNESDAY... Tropical storm conditions possible with hurricane
conditions also possible. East winds 25 knots. Wind waves 9 feet.
Southeast swell 5 feet. Haze. Isolated showers.
.WEDNESDAY NIGHT... Hurricane conditions possible. Northeast
winds 30 knots becoming east 40 knots after midnight. Wind waves
10 feet. Southeast swell 6 feet. Frequent heavy showers.
.THURSDAY... Hurricane conditions possible. East winds 40 knots.
Wind waves 18 feet. South swell 8 feet. Heavy rain and
thunderstorms.
.THURSDAY NIGHT... Hurricane conditions possible. Heavy rain and
thunderstorms.
.FRIDAY... Tropical storm conditions possible. Heavy rain and
thunderstorms.
.FRIDAY NIGHT... Tropical storm conditions possible. Southeast
winds 15 knots. Wind waves 6 feet. Southeast swell 3 feet in the
evening. Occasional showers.
.SATURDAY...Southeast winds 15 knots. Wind waves 5 feet.
Occasional showers in the morning, then showers likely in the
afternoon.

$$

PHZ124-221045-
Big Island Southeast Waters-
1135 AM HST Tue Aug 21 2018

...HURRICANE WATCH IN EFFECT...

.REST OF TODAY...Northeast winds 25 knots. Wind waves 9 feet.
Southeast swell 7 feet and northeast 3 to 4 feet. Scattered
showers.
.TONIGHT...Northeast winds 25 knots. Wind waves 9 feet. Southeast
swell 9 feet and northeast 4 to 5 feet. Haze through the night.
Showers likely in the evening. Occasional showers after midnight.
.WEDNESDAY... Tropical storm conditions possible with hurricane
conditions also possible. Northeast winds 25 knots. Wind waves
9 feet. Mixed swell southeast 10 feet and northeast 5 to 6 feet.
Haze through the day. Occasional showers in the morning. Showers
likely in the afternoon.
.WEDNESDAY NIGHT... Hurricane conditions possible. East winds
35 knots. Wind waves 11 feet. Mixed swell southeast 10 feet and
northeast 6 feet. Frequent heavy showers.
.THURSDAY... Hurricane conditions possible. East winds 40 knots.
Wind waves 16 feet. South swell 11 feet and northeast 5 to
6 feet. Heavy rain and thunderstorms.
.THURSDAY NIGHT... Tropical storm conditions possible. Heavy rain
and thunderstorms.
.FRIDAY... Tropical storm conditions possible. Heavy rain and
thunderstorms in the morning, then frequent heavy showers in the
afternoon.
.FRIDAY NIGHT...East winds 20 knots. Wind waves 6 feet. Southeast
swell 3 feet and northeast 4 feet. Occasional showers in the
evening, then showers likely after midnight.
.SATURDAY...East winds 20 knots. Wind waves 5 feet. Swell
northeast 3 to 4 feet. Occasional showers in the morning, then
showers likely in the afternoon.

$$

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



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