Gale Warning 4, NWS Honolulu, HI

886 
WHHW70 PHFO 050146
MWWHFO

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE HONOLULU HI
346 PM HST WED OCT 4 2017


PHZ120-121-051500-
/O.CAN.PHFO.SC.Y.0049.000000T0000Z-171005T0400Z/
/O.EXT.PHFO.GL.W.0004.171005T0146Z-171006T0400Z/
PAILOLO CHANNEL-ALENUIHAHA CHANNEL-
346 PM HST WED OCT 4 2017

...GALE WARNING NOW IN EFFECT UNTIL 6 PM HST THURSDAY...
...SMALL CRAFT ADVISORY IS CANCELLED...

THE SMALL CRAFT ADVISORY HAS BEEN UPGRADED TO A GALE WARNING. 

* WINDS...EAST 25 TO 35 KNOTS THROUGH THURSDAY.

* WAVES/SEAS...BUILDING TO 8 TO 12 FEET TONIGHT THROUGH THURSDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WINDS SPEEDS OF 25 TO 33 KNOTS
AND/OR SEAS 10 FEET OR GREATER ARE EXPECTED TO PRODUCE CONDITIONS
HAZARDOUS TO SMALL CRAFT. INEXPERIENCED MARINERS...ESPECIALLY
THOSE OPERATING SMALLER VESSELS...SHOULD AVOID NAVIGATING IN
THESE CONDITIONS.

&&

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A GALE WARNING MEANS WINDS OF 34 TO 47 KNOTS ARE IMMINENT OR
OCCURRING. OPERATING A VESSEL IN GALE CONDITIONS REQUIRES
EXPERIENCE AND PROPERLY EQUIPPED VESSELS. IT IS HIGHLY
RECOMMENDED THAT MARINERS WITHOUT THE PROPER EXPERIENCE SEEK SAFE
HARBOR PRIOR TO THE ONSET OF GALE CONDITIONS.

&&

$$

PHZ110>118-122-051500-
/O.EXT.PHFO.SC.Y.0049.171005T0146Z-171006T0400Z/
KAUAI NORTHWEST WATERS-KAUAI WINDWARD WATERS-KAUAI LEEWARD WATERS-
KAUAI CHANNEL-OAHU WINDWARD WATERS-OAHU LEEWARD WATERS-
KAIWI CHANNEL-MAUI COUNTY WINDWARD WATERS-
MAUI COUNTY LEEWARD WATERS-BIG ISLAND WINDWARD WATERS-
346 PM HST WED OCT 4 2017

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 6 PM HST THURSDAY...

* WINDS...EAST 15 TO 25 KNOTS.

* WAVES/SEAS...7 TO 10 FEET.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WINDS SPEEDS OF 25 TO 33 KNOTS
AND/OR SEAS 10 FEET OR GREATER ARE EXPECTED TO PRODUCE CONDITIONS
HAZARDOUS TO SMALL CRAFT. INEXPERIENCED MARINERS...ESPECIALLY
THOSE OPERATING SMALLER VESSELS...SHOULD AVOID NAVIGATING IN
THESE CONDITIONS.

&&

$$

PHZ119-123-124-051500-
/O.CON.PHFO.SC.Y.0049.000000T0000Z-171006T0400Z/
MAALAEA BAY-BIG ISLAND LEEWARD WATERS-BIG ISLAND SOUTHEAST WATERS-
346 PM HST WED OCT 4 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM HST
THURSDAY...

* WINDS...EAST 25 TO 30 KNOTS TONIGHT THROUGH THURSDAY. 

* WAVES/SEAS...BUILDING TO 8 TO 12 FEET TONIGHT THROUGH THURSDAY 
  SOUTH OF THE BIG ISLAND. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WINDS SPEEDS OF 25 TO 33 KNOTS
AND/OR SEAS 10 FEET OR GREATER ARE EXPECTED TO PRODUCE CONDITIONS
HAZARDOUS TO SMALL CRAFT. INEXPERIENCED MARINERS...ESPECIALLY
THOSE OPERATING SMALLER VESSELS...SHOULD AVOID NAVIGATING IN
THESE CONDITIONS.

&&

$$

158 
WHHW70 PHFO 051338
MWWHFO

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE HONOLULU HI
338 AM HST THU OCT 5 2017


PHZ120-121-060245-
/O.CON.PHFO.GL.W.0004.000000T0000Z-171006T0400Z/
PAILOLO CHANNEL-ALENUIHAHA CHANNEL-
338 AM HST THU OCT 5 2017

...GALE WARNING REMAINS IN EFFECT UNTIL 6 PM HST THIS EVENING...

* WINDS...EAST 25 TO 35 KNOTS.

* WAVES/SEAS...8 TO 12 FEET.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A GALE WARNING MEANS WINDS OF 34 TO 47 KNOTS ARE IMMINENT OR
OCCURRING. OPERATING A VESSEL IN GALE CONDITIONS REQUIRES
EXPERIENCE AND PROPERLY EQUIPPED VESSELS. IT IS HIGHLY
RECOMMENDED THAT MARINERS WITHOUT THE PROPER EXPERIENCE SEEK SAFE
HARBOR PRIOR TO THE ONSET OF GALE CONDITIONS.

&&

$$

PHZ110>119-122>124-060245-
/O.CON.PHFO.SC.Y.0049.000000T0000Z-171006T0400Z/
KAUAI NORTHWEST WATERS-KAUAI WINDWARD WATERS-KAUAI LEEWARD WATERS-
KAUAI CHANNEL-OAHU WINDWARD WATERS-OAHU LEEWARD WATERS-
KAIWI CHANNEL-MAUI COUNTY WINDWARD WATERS-
MAUI COUNTY LEEWARD WATERS-MAALAEA BAY-BIG ISLAND WINDWARD WATERS-
BIG ISLAND LEEWARD WATERS-BIG ISLAND SOUTHEAST WATERS-
338 AM HST THU OCT 5 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM HST THIS
EVENING...

* WINDS...EAST 25 TO 30 KNOTS.

* WAVES/SEAS...8 TO 12 FEET. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WINDS SPEEDS OF 25 TO 33 KNOTS
AND/OR SEAS 10 FEET OR GREATER ARE EXPECTED TO PRODUCE CONDITIONS
HAZARDOUS TO SMALL CRAFT. INEXPERIENCED MARINERS...ESPECIALLY
THOSE OPERATING SMALLER VESSELS...SHOULD AVOID NAVIGATING IN
THESE CONDITIONS.

&&

$$

GIBBS

489 
WHHW70 PHFO 060143
MWWHFO

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE HONOLULU HI
343 PM HST THU OCT 5 2017

...GALE WARNING EXTENDED UNTIL 6 AM HST FRIDAY...

.WINDS ARE EXPECTED TO TREND DOWNWARD LATER TONIGHT AND DROP 
BELOW GALE LEVELS BY FRIDAY MORNING. THE GALE WARNING WILL THEN BE
REPLACED BY A SMALL CRAFT ADVISORY FOR THE ALENUIHAHA AND PAILOLO
CHANNELS AND EXTENDED FOR ALL HAWAIIAN WATERS THROUGH FRIDAY.

PHZ120-121-061445-
/O.EXT.PHFO.GL.W.0004.000000T0000Z-171006T1600Z/
PAILOLO CHANNEL-ALENUIHAHA CHANNEL-
343 PM HST THU OCT 5 2017

...GALE WARNING NOW IN EFFECT UNTIL 6 AM HST FRIDAY...

* WINDS...EAST 25 TO 35 KNOTS.

* WAVES/SEAS...8 TO 12 FEET.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A GALE WARNING MEANS WINDS OF 34 TO 47 KNOTS ARE IMMINENT OR
OCCURRING. OPERATING A VESSEL IN GALE CONDITIONS REQUIRES
EXPERIENCE AND PROPERLY EQUIPPED VESSELS. IT IS HIGHLY
RECOMMENDED THAT MARINERS WITHOUT THE PROPER EXPERIENCE SEEK SAFE
HARBOR PRIOR TO THE ONSET OF GALE CONDITIONS.

&&

$$

PHZ110>119-122>124-061445-
/O.EXT.PHFO.SC.Y.0049.000000T0000Z-171006T1600Z/
KAUAI NORTHWEST WATERS-KAUAI WINDWARD WATERS-KAUAI LEEWARD WATERS-
KAUAI CHANNEL-OAHU WINDWARD WATERS-OAHU LEEWARD WATERS-
KAIWI CHANNEL-MAUI COUNTY WINDWARD WATERS-
MAUI COUNTY LEEWARD WATERS-MAALAEA BAY-BIG ISLAND WINDWARD WATERS-
BIG ISLAND LEEWARD WATERS-BIG ISLAND SOUTHEAST WATERS-
343 PM HST THU OCT 5 2017

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 6 AM HST FRIDAY...

* WINDS...EAST 25 TO 30 KNOTS.

* WAVES/SEAS...8 TO 12 FEET.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WINDS SPEEDS OF 25 TO 33 KNOTS
AND/OR SEAS 10 FEET OR GREATER ARE EXPECTED TO PRODUCE CONDITIONS
HAZARDOUS TO SMALL CRAFT. INEXPERIENCED MARINERS...ESPECIALLY
THOSE OPERATING SMALLER VESSELS...SHOULD AVOID NAVIGATING IN
THESE CONDITIONS.

&&

$$

985 
WHHW70 PHFO 061330
MWWHFO

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE HONOLULU HI
330 AM HST FRI OCT 6 2017

...SMALL CRAFT ADVISORY FOR ALL WATERS TODAY...

.STRONG TRADE WINDS WILL CONTINUE ABOVE SMALL CRAFT ADVISORY
LEVELS TODAY...BUT ARE EXPECTED TO DROP BELOW ADVISORY LEVELS BY 
THIS EVENING. 

PHZ120-121-070230-
/O.CAN.PHFO.GL.W.0004.000000T0000Z-171006T1600Z/
/O.EXB.PHFO.SC.Y.0049.000000T0000Z-171007T0400Z/
PAILOLO CHANNEL-ALENUIHAHA CHANNEL-
330 AM HST FRI OCT 6 2017

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM HST THIS EVENING...
...GALE WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN HONOLULU HAS ISSUED A SMALL CRAFT
ADVISORY, WHICH IS IN EFFECT UNTIL 6 PM HST THIS EVENING. THE
GALE WARNING HAS BEEN CANCELLED. 

* WINDS AND SEAS...EAST 20 TO 30 KT...AND SEAS 6 TO 10 FT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WINDS SPEEDS OF 25 TO 33 KNOTS
AND/OR SEAS 10 FEET OR GREATER ARE EXPECTED TO PRODUCE CONDITIONS
HAZARDOUS TO SMALL CRAFT. INEXPERIENCED MARINERS, ESPECIALLY
THOSE OPERATING SMALLER VESSELS, SHOULD AVOID NAVIGATING IN THESE
CONDITIONS.

&&

$$

PHZ110>119-122>124-070230-
/O.EXT.PHFO.SC.Y.0049.000000T0000Z-171007T0400Z/
KAUAI NORTHWEST WATERS-KAUAI WINDWARD WATERS-KAUAI LEEWARD WATERS-
KAUAI CHANNEL-OAHU WINDWARD WATERS-OAHU LEEWARD WATERS-
KAIWI CHANNEL-MAUI COUNTY WINDWARD WATERS-
MAUI COUNTY LEEWARD WATERS-MAALAEA BAY-BIG ISLAND WINDWARD WATERS-
BIG ISLAND LEEWARD WATERS-BIG ISLAND SOUTHEAST WATERS-
330 AM HST FRI OCT 6 2017

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 6 PM HST THIS
EVENING...

* WINDS AND SEAS...EAST 15 TO 25 KT...AND SEAS 6 TO 10 FT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WINDS SPEEDS OF 25 TO 33 KNOTS
AND/OR SEAS 10 FEET OR GREATER ARE EXPECTED TO PRODUCE CONDITIONS
HAZARDOUS TO SMALL CRAFT. INEXPERIENCED MARINERS...ESPECIALLY
THOSE OPERATING SMALLER VESSELS...SHOULD AVOID NAVIGATING IN
THESE CONDITIONS.

&&

$$

Area Forecast Discussion
National Weather Service Honolulu HI
330 AM HST Wed Oct 4 2017

.SYNOPSIS...
A high far northwest of the islands will move east and strengthen
through Friday. This high will produce windy weather tonight through
Thursday night. Winds will subside Friday as a low approaches from
the northeast. A band of showers trailing southwest from the low
will move over the islands on Friday and linger through the weekend.
The shower band will dissipate early next week.

&&

.DISCUSSION...
A ridge to the northeast is producing moderate trade winds over the
area. The trades are pushing a band of low clouds over the islands.
Showers within this band will be focused over mainly windward areas,
but some showers will spread leeward on the smaller islands. Showers
will decrease this afternoon as the cloud band weakens and moves off
to the west.

A 1037 mb high around 1500 miles northwest of Honolulu near 40N 168W
is forecast to move east and strengthen to 1040 mb by tonight. This
is an unusually strong high, especially for early fall. As the high
builds north of the area, it will become quite windy over the
islands tonight through Thursday night. Wind Advisories may be
required.

The global models are in good agreement showing a low forming far
northeast of the islands tomorrow night and moving southwest. As the
low approaches on Thursday our winds will subside. A band of low
clouds along a frontal band trailing southwest from the low will
move south over the islands on Friday. The cloud band will bring an
increase in windward showers, but the atmosphere will remain rather
stable, so no excessive rainfall is expected. The band will likely
stall over the islands and gradually dissipate over the weekend.
Winds will become light as the low approaches to around 800 miles
north of the islands.

Moderate trade winds are expected to return by next Monday as the
low weakens and moves off to the north.

&&

AVIATION... An area of broken to overcast showery and stable low
clouds is tracking over the islands in an increasing trade wind
flow, and is currently impacting windward areas of most islands,
where AIRMET SIERRA is posted for mountain obscuration. The back
edge of the cloud mass is approaching windward Big Island, which
will likely allow the AIRMET to be dropped there by 16Z. Improving
conditions are expected over the other islands through the morning
as the cloud cluster diminishes and passes W of the area, and a
ridge aloft builds in from the E.

Strengthening high pressure well N of the area will bring an
increase in trade wind speeds over the next 12-24 hours, with winds
expected to peak on Thursday. AIRMET TANGO for moderate low-level
turbulence over and downwind of the terrain on all islands will be
issued with the next forecast update. As winds peak, localized
severe low-level turbulence becomes an increasing concern.

&&

.MARINE...

Guidance supports strong trades across all waters tonight through
Thursday as 1040 mb high pressure builds north of the state. The
small craft advisory currently over the typically windier channel
waters has been expanded to all waters for the tonight and Thursday
periods. Additionally, gales are expected across the Pailolo and
Alenuihaha Channels tonight through Thursday. Winds will begin to
gradually trend down Thursday night through Friday, then become
light over the weekend as low pressure develops northeast of the
state. Land and sea breeze conditions can't be ruled out by the end
of the weekend near the coasts, which will remain possible into
early next week.

Surf along north facing shores will trend down through the day today
as the north-northwest swell eases. A reinforcing north- northwest
swell will fill in late tonight and hold through Thursday before
gradually trending down Friday into the upcoming weekend.

Surf along east facing shores will continue to build and may reach
advisory-levels by late Thursday as the trades become strong locally
and upstream of the state. This will likely hold through Friday
before trending down into the weekend.

Surf along south facing shores is expected to build through the
second half of the week as a mix of south and south-southeast long-
period sources fill in from the southern hemisphere.

Later in the weekend and early next week, a northeast (020-030 deg)
swell associated with a developing low northeast of the state is
forecast to build across the waters. This source could lead to surf
rising along exposed north facing shores and possibly lead to
advisory-level surf returning along east facing shores by Monday.

&&

.HFO WATCHES/WARNINGS/ADVISORIES...
Small Craft Advisory until 600 PM Thursday for Maalaea Bay- Big
Island Leeward Waters-Big Island Southeast Waters.

Small Craft Advisory from 600 PM this evening to 600 PM Thursday
for Kauai Northwest Waters-Kauai Windward Waters-Kauai Leeward
Waters-Kauai Channel-Oahu Windward Waters-Oahu Leeward Waters-
Kaiwi Channel-Maui County Windward Waters-Maui County Leeward
Waters-Big Island Windward Waters.

Small Craft Advisory until 600 PM this evening for Pailolo
Channel-Alenuihaha Channel.

Gale Warning from 600 PM this evening to 600 PM Thursday for
Pailolo Channel-Alenuihaha Channel.

&&