Coastal Waters Forecast
Issued by NWS Honolulu, HI

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000
FZHW50 PHFO 231955
CWFHFO

Coastal Waters Forecast
National Weather Service Honolulu HI
955 AM HST Mon Oct 23 2017

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

PHZ100-240900-
955 AM HST Mon Oct 23 2017

.Synopsis for Hawaiian coastal waters...
A front northwest of the area is moving southeastward toward the
main Hawaiian Islands. The front is expected to affect Kauai
waters tonight, then sweep across the island chain, reaching the
Big Island waters Tuesday. Thunderstorms are possible ahead of
and along the front. A new high will build far northwest of the
area by the middle of the week.

$$

PHZ110-240900-
Kauai Northwest Waters-
955 AM HST Mon Oct 23 2017

.REST OF TODAY...Southwest winds 15 knots. Wind waves 5 feet.
Northwest swell 6 feet. Haze through the day. Heavy showers
likely late in the morning. Isolated thunderstorms through the
day. Scattered heavy showers in the afternoon.
.TONIGHT...North winds 20 knots. Wind waves 6 feet. Northwest
swell 6 feet increasing to 9 feet after midnight. Heavy showers
likely in the evening. Isolated thunderstorms through the night.
Scattered heavy showers after midnight.
.TUESDAY...North winds 20 knots. Wind waves 6 feet. Northwest
swell 10 feet. Scattered showers in the morning, then isolated
showers in the afternoon.
.TUESDAY NIGHT...North winds 15 knots. Wind waves 5 feet.
Northwest swell 11 feet. Isolated showers.
.WEDNESDAY...North winds 10 knots in the morning becoming
variable less than 10 knots. Wind waves 3 feet. North swell
9 feet.
.WEDNESDAY NIGHT...Northeast winds 10 knots. Wind waves 3 feet.
North swell 7 feet.
.THURSDAY...Northeast winds 10 knots. Wind waves 3 to 4 feet.
Northwest swell 8 to 10 feet. Scattered showers.
.FRIDAY...Northeast winds 15 knots. Wind waves 3 feet. Northwest
swell 11 to 12 feet. Scattered showers.

$$

PHZ111-240900-
Kauai Windward Waters-
955 AM HST Mon Oct 23 2017

.REST OF TODAY...Southwest winds 15 knots. Wind waves 5 feet.
Northwest swell 6 feet. Haze through the day. Occasional heavy
showers late in the morning. Isolated thunderstorms through the
day. Scattered heavy showers in the afternoon.
.TONIGHT...Northwest winds 15 knots. Wind waves 5 feet. Northwest
swell 6 feet increasing to 9 feet after midnight. Heavy showers
likely and isolated thunderstorms.
.TUESDAY...North winds 15 knots. Wind waves 6 feet. Northwest
swell 10 feet. Scattered showers in the morning, then isolated
showers in the afternoon.
.TUESDAY NIGHT...North winds 15 knots. Wind waves 5 feet.
Northwest swell 11 feet. Isolated showers.
.WEDNESDAY...North winds 10 knots in the morning becoming
variable less than 10 knots. Wind waves 3 feet. Northwest swell
9 feet.
.WEDNESDAY NIGHT...North winds 10 knots. Wind waves 3 feet. North
swell 8 feet.
.THURSDAY...Northeast winds 10 knots. Wind waves 4 feet.
Northwest swell 8 to 10 feet. Scattered showers.
.FRIDAY...Northeast winds 10 knots. Wind waves 3 feet. Northwest
swell 11 to 12 feet. Scattered showers.

$$

PHZ112-240900-
Kauai Leeward Waters-
955 AM HST Mon Oct 23 2017

.REST OF TODAY...West winds 10 knots. Wind waves 3 feet.
Northwest swell 6 feet. Haze through the day. Occasional heavy
showers late in the morning. Isolated thunderstorms through the
day. Scattered heavy showers in the afternoon.
.TONIGHT...North winds 15 knots rising to to 25 knots after
midnight. Wind waves 6 feet. Northwest swell 6 feet increasing to
9 feet after midnight. Scattered heavy showers in the evening.
Isolated thunderstorms through the night. Heavy showers likely
after midnight.
.TUESDAY...North winds 20 knots. Wind waves 6 feet. Northwest
swell 10 feet. Scattered showers in the morning, then isolated
showers in the afternoon.
.TUESDAY NIGHT...North winds 15 knots. Wind waves 5 feet.
Northwest swell 10 feet. Isolated showers in the evening.
.WEDNESDAY...North winds 10 knots. Wind waves 2 feet or less.
Northwest swell 9 feet.
.WEDNESDAY NIGHT...Northeast winds 10 knots. Wind waves 3 feet in
the evening then 2 feet or less. North swell 7 feet.
.THURSDAY...Northeast winds 10 knots. Wind waves 3 feet.
Northwest swell 8 to 10 feet. Isolated showers.
.FRIDAY...Northeast winds 15 knots. In the Kaulakahi Channel,
northeast winds 10 knots in the morning becoming variable less
than 10 knots, then becoming northeast 10 knots. Wind waves
3 feet. Northwest swell 11 to 13 feet. Isolated showers.

$$

PHZ113-240900-
Kauai Channel-
955 AM HST Mon Oct 23 2017

.REST OF TODAY...Southwest winds 10 knots rising to 20 knots in
the afternoon. Wind waves 4 feet. Northwest swell 6 feet. Haze
through the day. Occasional heavy showers late in the morning.
Isolated thunderstorms through the day. Scattered heavy showers
in the afternoon.
.TONIGHT...Northwest winds 10 knots becoming north to 25 knots
after midnight. Wind waves 5 feet. Northwest swell 5 feet
increasing to 7 feet after midnight. Scattered heavy showers in
the evening. Isolated thunderstorms through the night. Heavy
showers likely after midnight.
.TUESDAY...North winds 20 knots. Wind waves 6 feet. Northwest
swell 8 feet. Scattered showers in the morning, then isolated
showers in the afternoon.
.TUESDAY NIGHT...North winds 15 knots. Wind waves 5 feet.
Northwest swell 10 feet. Isolated showers after midnight.
.WEDNESDAY...North winds 10 knots. Wind waves 3 feet. Northwest
swell 9 feet.
.WEDNESDAY NIGHT...Northeast winds 10 knots. Wind waves 3 feet.
North swell 8 feet.
.THURSDAY...Northeast winds 15 knots. Wind waves 4 feet.
Northwest swell 8 to 10 feet. Isolated showers.
.FRIDAY...Northeast winds 15 knots. Wind waves 3 feet. Northwest
swell 10 to 12 feet. Isolated showers.

$$

PHZ114-240900-
Oahu Windward Waters-
955 AM HST Mon Oct 23 2017

.REST OF TODAY...South winds 10 knots becoming southwest 20 knots
in the afternoon. Wind waves 4 feet. Northwest swell 6 feet. Haze
through the day. Occasional heavy showers late in the morning.
Isolated thunderstorms through the day. Heavy showers likely in
the afternoon.
.TONIGHT...West winds 10 knots becoming north 20 knots after
midnight. Wind waves 5 feet. Northwest swell 6 feet. Haze. Heavy
showers likely and isolated thunderstorms.
.TUESDAY...North winds 15 knots. Wind waves 6 feet. Northwest
swell 8 feet. Haze in the morning. Scattered showers through the
day.
.TUESDAY NIGHT...North winds 10 knots. Wind waves 5 feet.
Northwest swell 10 feet. Isolated showers through the night.
.WEDNESDAY...North winds 10 knots. Wind waves 4 feet. Northwest
swell 9 feet. Isolated showers in the morning.
.WEDNESDAY NIGHT...Northeast winds 10 knots. Wind waves 4 feet.
North swell 8 feet.
.THURSDAY...Northeast winds 10 knots. Wind waves 4 feet.
Northwest swell 8 to 10 feet. Isolated showers.
.FRIDAY...Northeast winds 15 knots. Wind waves 3 feet. Northwest
swell 10 to 12 feet. Scattered showers.

$$

PHZ115-240900-
Oahu Leeward Waters-
955 AM HST Mon Oct 23 2017

.REST OF TODAY...South winds 10 knots. Wind waves 3 feet.
Northwest swell 6 feet. Haze through the day. Occasional heavy
showers late in the morning. Isolated thunderstorms through the
day. Heavy showers likely in the afternoon.
.TONIGHT...Southwest winds 10 knots becoming north 20 knots after
midnight. Wind waves 5 feet. Northwest swell 5 feet. Heavy
showers likely and isolated thunderstorms.
.TUESDAY...North winds 20 knots. Wind waves 6 feet. Northwest
swell 7 feet. Scattered showers.
.TUESDAY NIGHT...North winds 15 knots. Wind waves 4 feet.
Northwest swell 8 feet. Isolated showers.
.WEDNESDAY...North winds 10 knots. Wind waves 2 feet or less.
Northwest swell 8 feet. Isolated showers in the morning.
.WEDNESDAY NIGHT...Northeast winds 15 knots. Wind waves 3 feet.
Northwest swell 7 feet.
.THURSDAY...Northeast winds 15 knots. Wind waves 4 feet.
Northwest swell 7 to 9 feet.
.FRIDAY...Northeast winds 15 knots. Wind waves 3 feet. Northwest
swell 9 to 11 feet. Isolated showers.

$$

PHZ116-240900-
Kaiwi Channel-
955 AM HST Mon Oct 23 2017

.REST OF TODAY...Winds variable less than 10 knots becoming south
15 knots in the afternoon. Wind waves 4 feet. Northwest swell
6 feet. Haze. Occasional heavy showers and isolated
thunderstorms.
.TONIGHT...Southwest winds 10 knots veering northwest after
midnight. Wind waves 5 feet. Northwest swell 5 feet. Haze through
the night. Occasional heavy showers in the evening. Isolated
thunderstorms through the night. Heavy showers likely after
midnight.
.TUESDAY...North winds 20 knots. Wind waves 5 feet. Northwest
swell 7 feet. Haze in the morning. Scattered heavy showers and
isolated thunderstorms through the day.
.TUESDAY NIGHT...North winds 15 knots. Wind waves 5 feet.
Northwest swell 9 feet. Isolated showers in the evening, then
scattered showers after midnight.
.WEDNESDAY...North winds 10 knots. Wind waves 4 feet. Northwest
swell 9 feet. Isolated showers in the morning.
.WEDNESDAY NIGHT...Northeast winds 15 knots. Wind waves 4 feet.
North swell 8 feet. Isolated showers.
.THURSDAY...Northeast winds 15 knots. Wind waves 4 feet.
Northwest swell 7 to 9 feet.
.FRIDAY...Northeast winds 15 knots. Wind waves 3 feet. Northwest
swell 10 to 12 feet. Isolated showers.

$$

PHZ117-240900-
Maui County Windward Waters-
955 AM HST Mon Oct 23 2017

.REST OF TODAY...South winds 15 knots. Wind waves 4 feet.
Northwest swell 7 feet. Haze through the day. Scattered heavy
showers late in the morning. Isolated thunderstorms through the
day. Heavy showers likely in the afternoon.
.TONIGHT...Southwest winds 10 knots veering northwest after
midnight. Wind waves 5 feet. Northwest swell 5 feet. Haze.
Occasional heavy showers and isolated thunderstorms.
.TUESDAY...Northwest winds 15 knots. Wind waves 5 feet. Northwest
swell 7 feet. Haze through the day. Heavy showers likely in the
morning. Isolated thunderstorms through the day. Scattered heavy
showers in the afternoon.
.TUESDAY NIGHT...North winds 15 knots. Wind waves 5 feet.
Northwest swell 9 feet. Scattered showers.
.WEDNESDAY...North winds 10 knots. Wind waves 4 feet. Northwest
swell 9 feet. Scattered showers through the day.
.WEDNESDAY NIGHT...North winds 10 knots. Wind waves 4 feet. North
swell 8 feet. Isolated showers.
.THURSDAY...Northeast winds 10 knots. Wind waves 4 feet.
Northwest swell 7 to 9 feet. Isolated showers.
.FRIDAY...Northeast winds 10 knots. Wind waves 3 feet. Northwest
swell 10 to 12 feet. Isolated showers.

$$

PHZ118-240900-
Maui County Leeward Waters-
955 AM HST Mon Oct 23 2017

.REST OF TODAY...South winds 10 knots. Wind waves 4 feet.
Northwest swell 5 feet. Haze. Occasional heavy showers and
isolated thunderstorms.
.TONIGHT...South winds 10 knots veering northwest after midnight.
Wind waves 5 feet. Northwest swell 4 feet. Haze through the
night. Occasional heavy showers in the evening. Isolated
thunderstorms through the night. Heavy showers likely after
midnight.
.TUESDAY...North winds 20 knots. Wind waves 5 feet. Northwest
swell 5 feet. Haze in the morning. Heavy showers likely in the
morning. Isolated thunderstorms through the day. Scattered heavy
showers in the afternoon.
.TUESDAY NIGHT...North winds 15 knots. Wind waves 5 feet.
Northwest swell 6 feet. Scattered showers.
.WEDNESDAY...North winds 10 knots. Wind waves 3 feet. Northwest
swell 7 feet. Scattered showers in the morning, then isolated
showers in the afternoon.
.WEDNESDAY NIGHT...North winds 15 knots. Wind waves 4 feet.
Northwest swell 7 feet. Isolated showers.
.THURSDAY...Northeast winds 15 knots. Wind waves 3 feet.
Northwest swell 5 to 6 feet.
.FRIDAY...Northeast winds 10 knots. Wind waves 3 feet. Northwest
swell 7 to 9 feet. Isolated showers.

$$

PHZ119-240900-
Maalaea Bay-
955 AM HST Mon Oct 23 2017

.REST OF TODAY...Winds variable less than 10 knots. Wind waves
2 feet or less. Haze through the day. Scattered heavy showers
late in the morning. Heavy showers likely and isolated
thunderstorms in the afternoon.
.TONIGHT...Winds variable less than 10 knots becoming west
10 knots after midnight. Wind waves 3 feet. Haze through the
night. Occasional heavy showers in the evening. Isolated
thunderstorms through the night. Heavy showers likely after
midnight.
.TUESDAY...North winds 15 knots. Wind waves 2 feet or less. Haze
in the morning. Heavy showers likely in the morning. Isolated
thunderstorms through the day. Scattered heavy showers in the
afternoon.
.TUESDAY NIGHT...North winds 10 knots. Wind waves 2 feet or less.
Scattered showers.
.WEDNESDAY...North winds 10 knots in the morning becoming
variable less than 10 knots. Wind waves 2 feet or less. Scattered
showers in the morning, then isolated showers in the afternoon.
.WEDNESDAY NIGHT...North winds 15 knots. Wind waves 2 feet or
less.
.THURSDAY...North winds 15 knots. Wind waves 2 feet or less.
.FRIDAY...North winds 10 knots rising to 20 knots. Wind waves
2 feet or less.

$$

PHZ120-240900-
Pailolo Channel-
955 AM HST Mon Oct 23 2017

.REST OF TODAY...Winds variable less than 10 knots becoming south
10 knots in the afternoon. Wind waves 3 feet. Northwest swell
5 feet. Haze. Heavy showers likely and isolated thunderstorms.
.TONIGHT...Southwest winds 10 knots veering northwest after
midnight. Wind waves 3 feet. Northwest swell 4 feet. Haze through
the night. Occasional heavy showers in the evening. Isolated
thunderstorms through the night. Heavy showers likely after
midnight.
.TUESDAY...North winds 20 knots. Wind waves 4 feet. Northwest
swell 5 feet. Haze in the morning. Heavy showers likely in the
morning. Isolated thunderstorms through the day. Scattered heavy
showers in the afternoon.
.TUESDAY NIGHT...North winds 15 knots. Wind waves 4 feet.
Northwest swell 6 feet. Scattered showers.
.WEDNESDAY...Northeast winds 10 knots. Wind waves 3 feet.
Northwest swell 7 feet. Scattered showers in the morning, then
isolated showers in the afternoon.
.WEDNESDAY NIGHT...Northeast winds 15 knots. Wind waves 4 feet.
Northwest swell 7 feet. Isolated showers in the evening.
.THURSDAY...Northeast winds 15 knots. Wind waves 4 feet.
Northwest swell 6 to 7 feet.
.FRIDAY...Northeast winds 20 knots. Wind waves 3 feet. Northwest
swell 7 to 9 feet. Isolated showers.

$$

PHZ121-240900-
Alenuihaha Channel-
955 AM HST Mon Oct 23 2017

.REST OF TODAY...Winds variable less than 10 knots becoming south
15 knots in the afternoon. Wind waves 4 feet. Northwest swell
7 feet. Haze through the day. Scattered heavy showers late in the
morning. Isolated thunderstorms through the day. Heavy showers
likely in the afternoon.
.TONIGHT...Southwest winds 15 knots backing southeast after
midnight. Wind waves 6 feet. Northwest swell 5 feet. Haze through
the night. Occasional heavy showers in the evening. Isolated
thunderstorms through the night. Heavy showers likely after
midnight.
.TUESDAY...North winds 15 knots. Wind waves 6 feet. Northwest
swell 5 feet. Haze. Heavy showers likely and isolated
thunderstorms.
.TUESDAY NIGHT...North winds 15 knots. Wind waves 5 feet.
Northwest swell 7 feet. Haze in the evening. Scattered showers
through the night.
.WEDNESDAY...Northeast winds 15 knots. Wind waves 4 feet.
Northwest swell 8 feet. Scattered showers in the morning, then
isolated showers in the afternoon.
.WEDNESDAY NIGHT...Northeast winds 15 knots. Wind waves 4 feet.
Northwest swell 8 feet. Isolated showers through the night.
.THURSDAY...Northeast winds 15 knots. Wind waves 4 to 5 feet.
Northwest swell 7 to 8 feet.
.FRIDAY...Northeast winds 15 knots. Wind waves 3 to 4 feet.
Northwest swell 9 to 11 feet. Isolated showers.

$$

PHZ122-240900-
Big Island Windward Waters-
955 AM HST Mon Oct 23 2017

.REST OF TODAY...Southeast winds 15 knots. Wind waves 5 feet.
Northwest swell 7 feet. Haze through the day. Scattered heavy
showers late in the morning. Heavy showers likely and isolated
thunderstorms in the afternoon.
.TONIGHT...South winds 20 knots. Wind waves 5 feet. Northwest
swell 5 feet. Haze. Occasional heavy showers and isolated
thunderstorms.
.TUESDAY...South winds 15 knots. Wind waves 6 feet. Northwest
swell 5 feet. Haze. Occasional heavy showers and isolated
thunderstorms.
.TUESDAY NIGHT...North winds 15 knots. Wind waves 5 feet.
Northwest swell 7 feet and south 3 feet. Haze in the evening.
Showers likely through the night.
.WEDNESDAY...North winds 15 knots. Wind waves 4 feet. Northwest
swell 9 feet and south 3 feet. Showers likely in the morning,
then scattered showers in the afternoon.
.WEDNESDAY NIGHT...North winds 15 knots. Wind waves 4 feet.
Northwest swell 8 feet and south 3 feet. Scattered showers.
.THURSDAY...North winds 15 knots. Wind waves 4 to 5 feet.
Northwest swell 7 to 8 feet. Scattered showers.
.FRIDAY...Northeast winds 10 knots. Wind waves 3 feet. Northwest
swell 9 to 11 feet. Isolated showers.

$$

PHZ123-240900-
Big Island Leeward Waters-
955 AM HST Mon Oct 23 2017

.REST OF TODAY...West of the Big Island, winds variable less than
10 knots becoming south 15 knots in the afternoon. Near South
Point, east winds 15 knots. Wind waves 5 feet. Northwest swell
4 feet. Haze. Heavy showers likely and isolated thunderstorms.
.TONIGHT...East winds 20 knots west of the Big Island...variable
less than 10 knots near Kawaihae. Wind waves 6 feet. Northwest
swell 4 feet. Haze. Occasional heavy showers and isolated
thunderstorms.
.TUESDAY...Southeast winds 20 knots west of the Big Island...
variable less than 10 knots near Kawaihae. Wind waves 6 feet.
Northwest swell 4 feet. Haze through the day. Occasional heavy
showers in the morning. Isolated thunderstorms through the day.
Heavy showers likely in the afternoon.
.TUESDAY NIGHT...North winds 15 knots west of the Big Island...
variable less than 10 knots near South Point. Wind waves 5 feet.
Northwest swell 5 feet. Haze through the night. Showers likely in
the evening. Scattered showers after midnight.
.WEDNESDAY...West of the Big Island, north winds 10 knots. Near
South Point, northeast winds 10 knots in the morning becoming
variable less than 10 knots. Wind waves 4 feet. Northwest swell
6 feet. Haze through the day. Scattered showers in the morning.
Isolated showers in the afternoon.
.WEDNESDAY NIGHT...North winds 10 knots. Wind waves 4 feet.
Northwest swell 6 feet. Haze. Isolated showers.
.THURSDAY...West of the Big Island, north winds 10 knots becoming
variable less than 10 knots. Near Kawaihae, northeast winds
15 knots. Wind waves 4 feet. Northwest swell 5 feet. Haze.
Isolated showers.
.FRIDAY...West of the Big Island, winds variable less than
10 knots in the morning becoming northwest 10 knots, then veering
east in the evening becoming variable less than 10 knots. Near
South Point, northeast winds 10 knots becoming east 20 knots.
Wind waves 3 feet. Northwest swell 6 to 8 feet. Haze. Isolated
showers.

$$

PHZ124-240900-
Big Island Southeast Waters-
955 AM HST Mon Oct 23 2017

.REST OF TODAY...Southeast winds 15 knots. Wind waves 4 feet.
Northwest swell 5 feet. Scattered heavy showers late in the
morning. Isolated thunderstorms through the day. Heavy showers
likely in the afternoon.
.TONIGHT...East winds 15 knots. Wind waves 5 feet. Northwest
swell 5 feet. Occasional heavy showers and isolated
thunderstorms.
.TUESDAY...Southeast winds 10 knots. Wind waves 5 feet. Northwest
swell 4 feet. Swell south 3 feet. Occasional heavy showers and
isolated thunderstorms.
.TUESDAY NIGHT...North winds 15 knots. Wind waves 4 feet. Mixed
swell northwest 4 feet and south 3 feet. Showers likely.
.WEDNESDAY...Northeast winds 15 knots. Wind waves 5 feet.
Northwest swell 6 feet and south 3 feet. Showers likely in the
morning, then scattered showers in the afternoon.
.WEDNESDAY NIGHT...Northeast winds 15 knots. Wind waves 5 feet.
Northwest swell 6 feet and south 3 feet. Scattered showers.
.THURSDAY...Northeast winds 15 knots. Wind waves 5 feet.
Northwest swell 6 feet. Isolated showers.
.FRIDAY...Northeast winds 15 knots. Wind waves 3 to 4 feet.
Northwest swell 7 to 9 feet. Isolated showers.

$$



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