Alert archive / Hawaii / Small Craft Advisories in 2021

Small Craft Advisory 17, NWS Honolulu, HI

March 16, 2021

NWS Honolulu, HI issued this small craft advisory at Mar 16, 2021, 3:36 PM HST. It took effect at Mar 16, 2021, 9:01 PM HST. It was in force for 5 days.

The area

The counties it named.

The facts

Issued
Mar 16, 2021, 3:36 PM HST (01:36 UTC)
In effect from
Mar 16, 2021, 9:01 PM HST
Expired
Mar 22, 2021, 3:32 AM HST
In force
5 days
Issued by
NWS Honolulu, HI

The text

As transmitted.

927 
WHHW70 PHFO 170136
MWWHFO

URGENT - MARINE WEATHER MESSAGE
National Weather Service Honolulu HI
336 PM HST Tue Mar 16 2021

PHZ120-171445-
/O.CAN.PHFO.SC.Y.0016.000000T0000Z-210317T1600Z/
/O.NEW.PHFO.SC.Y.0017.210317T1600Z-210318T0400Z/
Pailolo Channel-
336 PM HST Tue Mar 16 2021

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM TO 6 PM HST
WEDNESDAY...

* WHAT...Northeast winds to 25 kt with higher gusts.

* WHERE...Pailolo Channel.

* WHEN...From 6 AM to 6 PM HST Wednesday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in these conditions.

&&

$$

PHZ118-170245-
/O.CAN.PHFO.SC.Y.0016.000000T0000Z-210317T0400Z/
Maui County Leeward Waters-
336 PM HST Tue Mar 16 2021

...SMALL CRAFT ADVISORY IS CANCELLED...

$$

PHZ121-171445-
/O.EXB.PHFO.SC.Y.0016.210317T1600Z-210318T0400Z/
Alenuihaha Channel-
336 PM HST Tue Mar 16 2021

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM TO 6 PM HST
WEDNESDAY...

* WHAT...Northeast winds 25 knots with higher gusts and seas 8 to
  11 feet.

* WHERE...Alenuihaha Channel.

* WHEN...From 6 AM to 6 PM HST Wednesday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in these conditions.

&&

$$

PHZ110>117-171445-
/O.EXT.PHFO.SC.Y.0016.000000T0000Z-210318T0400Z/
Kauai Northwest Waters-Kauai Windward Waters-Kauai Leeward Waters-
Kauai Channel-Oahu Windward Waters-Oahu Leeward Waters-
Kaiwi Channel-Maui County Windward Waters-
336 PM HST Tue Mar 16 2021

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

* WHAT...Northeast winds to 25 knots with higher gusts and seas 8
  to 11 feet.

* WHERE...Waters surrounding Kauai and Oahu.

* WHEN...Until 6 PM HST Wednesday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in these conditions.

&&

$$
15 follow-up statements
216 
WHHW70 PHFO 170701
MWWHFO

URGENT - MARINE WEATHER MESSAGE
National Weather Service Honolulu HI
901 PM HST Tue Mar 16 2021

PHZ119-172015-
/O.EXA.PHFO.SC.Y.0016.000000T0000Z-210318T0400Z/
Maalaea Bay-
901 PM HST Tue Mar 16 2021

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM WEDNESDAY...

* WHAT...North winds 25 knots.

* WHERE...Maalaea Bay.

* WHEN...Until 6 PM Wednesday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in these conditions.

&&

$$

PHZ121-172015-
/O.EXT.PHFO.SC.Y.0016.210317T0701Z-210318T0400Z/
Alenuihaha Channel-
901 PM HST Tue Mar 16 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 6 PM WEDNESDAY...

* WHAT...Northeast winds 25 knots.

* WHERE...Alenuihaha Channel.

* WHEN...Until 6 PM Wednesday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in these conditions.

&&

$$

PHZ120-172015-
/O.EXT.PHFO.SC.Y.0017.210317T0701Z-210318T0400Z/
Pailolo Channel-
901 PM HST Tue Mar 16 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 6 PM WEDNESDAY...

* WHAT...Northeast winds 25 kt.

* WHERE...Pailolo Channel.

* WHEN...Until 6 PM Wednesday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in these conditions.

&&

$$

PHZ110>117-172015-
/O.CON.PHFO.SC.Y.0016.000000T0000Z-210318T0400Z/
Kauai Northwest Waters-Kauai Windward Waters-Kauai Leeward Waters-
Kauai Channel-Oahu Windward Waters-Oahu Leeward Waters-
Kaiwi Channel-Maui County Windward Waters-
901 PM HST Tue Mar 16 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM WEDNESDAY...

* WHAT...Northeast winds to 25 knots and seas 8 to 11 feet.

* WHERE...Waters surrounding Kauai and Oahu.

* WHEN...Until 6 PM Wednesday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in these conditions.

&&

$$
414 
WHHW70 PHFO 171300
MWWHFO

URGENT - MARINE WEATHER MESSAGE
National Weather Service Honolulu HI
300 AM HST Wed Mar 17 2021

PHZ118-122>124-180200-
/O.EXB.PHFO.SC.Y.0016.210317T1300Z-210319T0400Z/
Maui County Leeward Waters-Big Island Windward Waters-
Big Island Leeward Waters-Big Island Southeast Waters-
300 AM HST Wed Mar 17 2021

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

* WHAT...Northeast winds 25 knots. Seas to 10 feet.

* WHERE...Maui County Leeward Waters, Big Island Windward 
  Waters, Big Island Leeward Waters and Big Island Southeast 
  Waters.

* WHEN...Until 6 PM Thursday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in these conditions.

&&

$$

PHZ110>117-119-121-180200-
/O.EXT.PHFO.SC.Y.0016.000000T0000Z-210319T0400Z/
Kauai Northwest Waters-Kauai Windward Waters-Kauai Leeward Waters-
Kauai Channel-Oahu Windward Waters-Oahu Leeward Waters-
Kaiwi Channel-Maui County Windward Waters-Maalaea Bay-
Alenuihaha Channel-
300 AM HST Wed Mar 17 2021

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

* WHAT...Northeast winds 25 knots. Seas to 10 feet.

* WHERE...Alenuihaha Channel.

* WHEN...Until 6 PM Thursday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in these conditions.

&&

$$

PHZ120-180200-
/O.EXT.PHFO.SC.Y.0017.000000T0000Z-210319T0400Z/
Pailolo Channel-
300 AM HST Wed Mar 17 2021

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

* WHAT...Northeast winds 25 kt. Seas 10 feet.

* WHERE...Pailolo Channel.

* WHEN...Until 6 PM HST Thursday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in these conditions.

&&

$$
948 
WHHW70 PHFO 180129
MWWHFO

URGENT - MARINE WEATHER MESSAGE
National Weather Service Honolulu HI
329 PM HST Wed Mar 17 2021

PHZ110>119-121>124-181430-
/O.CON.PHFO.SC.Y.0016.000000T0000Z-210319T0400Z/
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-Alenuihaha Channel-
Big Island Windward Waters-Big Island Leeward Waters-
Big Island Southeast Waters-
329 PM HST Wed Mar 17 2021

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

* WHAT...Northeast winds 25 kt with higher gusts and seas 6 to 11
  feet.

* WHERE...Big Island Leeward Waters, Big Island Windward Waters, 
  Alenuihaha Channel, Big Island Southeast Waters, Maui County 
  Leeward Waters, Maalaea Bay, Kauai Leeward Waters, Kauai 
  Channel, Kauai Northwest Waters, Kauai Windward Waters, Kaiwi 
  Channel, Maui County Windward Waters, Oahu Windward Waters and 
  Oahu Leeward Waters.

* WHEN...Until 6 PM HST Thursday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in these conditions.

&&

$$

PHZ120-181430-
/O.CON.PHFO.SC.Y.0017.000000T0000Z-210319T0400Z/
Pailolo Channel-
329 PM HST Wed Mar 17 2021

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

* WHAT...Northeast winds 25 kt with higher gusts and seas 6 to 10
  feet.

* WHERE...Pailolo Channel.

* WHEN...Until 6 PM HST Thursday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in these conditions.

&&

$$
749 
WHHW70 PHFO 181344
MWWHFO

URGENT - MARINE WEATHER MESSAGE
National Weather Service Honolulu HI
344 AM HST Thu Mar 18 2021

PHZ110>119-121>124-190230-
/O.EXT.PHFO.SC.Y.0016.000000T0000Z-210321T0400Z/
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-Alenuihaha Channel-
Big Island Windward Waters-Big Island Leeward Waters-
Big Island Southeast Waters-
344 AM HST Thu Mar 18 2021

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

* WHAT...Northeast winds 25 kt with higher gusts and seas 6 to 
  11 feet.

* WHERE...Big Island Leeward Waters, Big Island Windward Waters, 
  Alenuihaha Channel, Big Island Southeast Waters, Maui County 
  Leeward Waters, Maalaea Bay, Kauai Leeward Waters, Kauai 
  Channel, Kauai Northwest Waters, Kauai Windward Waters, Kaiwi 
  Channel, Maui County Windward Waters, Oahu Windward Waters and 
  Oahu Leeward Waters.

* WHEN...Until 6 PM HST Saturday.

* IMPACTS...Conditions will be hazardous to small craft.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in these conditions.

&&

$$

PHZ120-190230-
/O.EXT.PHFO.SC.Y.0017.000000T0000Z-210321T0400Z/
Pailolo Channel-
344 AM HST Thu Mar 18 2021

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

* WHAT...Northeast winds 25 kt with higher gusts and seas 6 to 
  10 feet.

* WHERE...Pailolo Channel.

* WHEN...Until 6 PM HST Saturday.

* IMPACTS...Conditions will be hazardous to small craft.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in these conditions.

&&

$$
872 
WHHW70 PHFO 190100
MWWHFO

URGENT - MARINE WEATHER MESSAGE
National Weather Service Honolulu HI
300 PM HST Thu Mar 18 2021

PHZ110>119-121>124-191400-
/O.CON.PHFO.SC.Y.0016.000000T0000Z-210321T0400Z/
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-Alenuihaha Channel-
Big Island Windward Waters-Big Island Leeward Waters-
Big Island Southeast Waters-
300 PM HST Thu Mar 18 2021

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

* WHAT...Northeast winds 25 kt except north Maalaea Bay. Seas 9 
  to 12 feet.

* WHERE...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, Alenuihaha Channel, Big 
  Island Windward Waters, Big Island Leeward Waters and Big Island
  Southeast Waters.

* WHEN...Until 6 PM HST Saturday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in these conditions.

&&

$$

PHZ120-191400-
/O.CON.PHFO.SC.Y.0017.000000T0000Z-210321T0400Z/
Pailolo Channel-
300 PM HST Thu Mar 18 2021

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

* WHAT...Northeast winds 25 kt. Seas 6 to 10 feet.

* WHERE...Pailolo Channel.

* WHEN...Until 6 PM HST Saturday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in these conditions.

&&

$$
057 
WHHW70 PHFO 191313
MWWHFO

URGENT - MARINE WEATHER MESSAGE
National Weather Service Honolulu HI
313 AM HST Fri Mar 19 2021

PHZ110>119-121>124-200215-
/O.CON.PHFO.SC.Y.0016.000000T0000Z-210321T0400Z/
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-Alenuihaha Channel-
Big Island Windward Waters-Big Island Leeward Waters-
Big Island Southeast Waters-
313 AM HST Fri Mar 19 2021

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

* WHAT...East winds 20 to 30 kt with higher gusts and seas 6 to 
  11 feet.

* WHERE...Big Island Leeward Waters, Big Island Windward Waters, 
  Alenuihaha Channel, Big Island Southeast Waters, Maui County 
  Leeward Waters, Maalaea Bay, Kauai Leeward Waters, Kauai 
  Channel, Kauai Northwest Waters, Kauai Windward Waters, Kaiwi 
  Channel, Maui County Windward Waters, Oahu Windward Waters and 
  Oahu Leeward Waters.

* WHEN...Until 6 PM HST Saturday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in these conditions.

&&

$$

PHZ120-200215-
/O.CON.PHFO.SC.Y.0017.000000T0000Z-210321T0400Z/
Pailolo Channel-
313 AM HST Fri Mar 19 2021

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

* WHAT...East winds 20 to 30 kt with higher gusts and seas 6 to 9
  feet.

* WHERE...Pailolo Channel.

* WHEN...Until 6 PM HST Saturday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in these conditions.

&&

$$
163 
WHHW70 PHFO 191931
MWWHFO

URGENT - MARINE WEATHER MESSAGE
National Weather Service Honolulu HI
931 AM HST Fri Mar 19 2021

PHZ121-200845-
/O.EXT.PHFO.SC.Y.0016.000000T0000Z-210320T1600Z/
/O.NEW.PHFO.GL.A.0006.210320T1600Z-210321T1600Z/
Alenuihaha Channel-
931 AM HST Fri Mar 19 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 6 AM HST SATURDAY...
...GALE WATCH IN EFFECT FROM SATURDAY MORNING THROUGH LATE
SATURDAY NIGHT...

* WHAT...For the Small Craft Advisory, east winds 25 to 30 kt with
  higher gusts and seas 7 to 10 feet. For the Gale Watch, east
  winds 25 to 35 kt with higher gusts and seas 7 to 11 feet 
  possible.

* WHERE...Alenuihaha Channel.

* WHEN...For the Small Craft Advisory, until 6 AM HST Saturday. 
  For the Gale Watch, from Saturday morning through late 
  Saturday night.

* IMPACTS...Strong winds can cause hazardous seas which could
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Gale Watch is issued when the risk of gale force winds of 34 to
47 knots has significantly increased but the specific timing
and/or location is still uncertain. It is intended to provide
additional lead time for mariners who may wish to consider
altering their plans.

&&

$$

PHZ110>119-122>124-200845-
/O.EXT.PHFO.SC.Y.0016.000000T0000Z-210321T1600Z/
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-
931 AM HST Fri Mar 19 2021

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

* WHAT...East winds 20 to 30 kt with higher gusts and seas 6 to 
  11 feet.

* WHERE...Big Island Leeward Waters, Big Island Windward Waters, 
  Alenuihaha Channel, Big Island Southeast Waters, Maui County 
  Leeward Waters, Maalaea Bay, Kauai Leeward Waters, Kauai 
  Channel, Kauai Northwest Waters, Kauai Windward Waters, Kaiwi 
  Channel, Maui County Windward Waters, Oahu Windward Waters and 
  Oahu Leeward Waters.

* WHEN...Until 6 AM HST Sunday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in these conditions.

&&

$$

PHZ120-200845-
/O.EXT.PHFO.SC.Y.0017.000000T0000Z-210321T1600Z/
Pailolo Channel-
931 AM HST Fri Mar 19 2021

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

* WHAT...East winds 20 to 30 kt with higher gusts and seas 6 to 
  9 feet.

* WHERE...Pailolo Channel.

* WHEN...Until 6 AM HST Sunday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in these conditions.

&&

$$
551 
WHHW70 PHFO 200138
MWWHFO

URGENT - MARINE WEATHER MESSAGE
National Weather Service Honolulu HI
338 PM HST Fri Mar 19 2021

PHZ121-201445-
/O.CON.PHFO.SC.Y.0016.000000T0000Z-210320T1600Z/
/O.UPG.PHFO.GL.A.0006.210320T1600Z-210321T1600Z/
/O.NEW.PHFO.GL.W.0007.210320T1600Z-210321T1600Z/
Alenuihaha Channel-
338 PM HST Fri Mar 19 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM HST
SATURDAY...
...GALE WARNING IN EFFECT FROM 6 AM SATURDAY TO 6 AM HST SUNDAY...

* WHAT...For the Small Craft Advisory, east winds 25 to 30 kt 
  with higher gusts and seas 8 to 12 feet.For the Gale Warning, 
  east winds 25 to 35 kt with higher gusts and seas 8 to 12 feet 
  expected. 

* WHERE...Alenuihaha Channel.

* WHEN...For the Small Craft Advisory, until 6 AM HST Saturday. For
  the Gale Warning, from 6 AM Saturday to 6 AM HST Sunday. 

* IMPACTS...Strong winds will cause hazardous seas which could
  capsize or damage vessels.

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>124-201445-
/O.EXT.PHFO.SC.Y.0016.000000T0000Z-210322T0400Z/
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 PM HST Fri Mar 19 2021

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

* WHAT...East winds 25 kt with higher gusts and seas 6 to 11 
  feet.

* WHERE...Big Island Leeward Waters, Big Island Windward Waters, 
  Big Island Southeast Waters, Maui County Leeward Waters, 
  Maalaea Bay, Kauai Leeward Waters, Kauai Channel, Kauai 
  Northwest Waters, Kauai Windward Waters, Kaiwi Channel, Maui 
  County Windward Waters, Oahu Windward Waters and Oahu Leeward 
  Waters.

* WHEN...Until 6 PM HST Sunday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in these conditions.

&&

$$

PHZ120-201445-
/O.EXT.PHFO.SC.Y.0017.000000T0000Z-210322T0400Z/
Pailolo Channel-
338 PM HST Fri Mar 19 2021

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

* WHAT...East winds 20 to 30 kt with higher gusts and seas 7 to 
  10 feet.

* WHERE...Pailolo Channel.

* WHEN...Until 6 PM HST Sunday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in these conditions.

&&

$$
832 
WHHW70 PHFO 201402
MWWHFO

URGENT - MARINE WEATHER MESSAGE
National Weather Service Honolulu HI
402 AM HST Sat Mar 20 2021

PHZ121-210315-
/O.CAN.PHFO.SC.Y.0016.000000T0000Z-210320T1600Z/
/O.EXT.PHFO.GL.W.0007.210320T1402Z-210321T1600Z/
Alenuihaha Channel-
402 AM HST Sat Mar 20 2021

...GALE WARNING IN EFFECT UNTIL 6 AM HST SUNDAY...

* WHAT...East winds 25 to 35 kt. Seas 8 to 12 feet.

* WHERE...Alenuihaha Channel.

* WHEN...Until 6 AM HST Sunday.

* IMPACTS...Strong winds will cause hazardous seas which could 
  capsize or damage vessels.

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>124-210315-
/O.CON.PHFO.SC.Y.0016.000000T0000Z-210322T0400Z/
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-
402 AM HST Sat Mar 20 2021

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

* WHAT...East winds 20 to 30 kt except north in Maalaea Bay. Seas
  8 to 12 feet.

* WHERE...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 and Big Island Southeast Waters.

* WHEN...Until 6 PM HST Sunday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in these conditions.

&&

$$

PHZ120-210315-
/O.CON.PHFO.SC.Y.0017.000000T0000Z-210322T0400Z/
Pailolo Channel-
402 AM HST Sat Mar 20 2021

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

* WHAT...East winds 25 to 30 kt. Seas 7 to 10 feet.

* WHERE...Pailolo Channel.

* WHEN...Until 6 PM HST Sunday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in these conditions.

&&

$$
172 
WHHW70 PHFO 210113
MWWHFO

URGENT - MARINE WEATHER MESSAGE
National Weather Service Honolulu HI
313 PM HST Sat Mar 20 2021

PHZ121-211415-
/O.CON.PHFO.GL.W.0007.000000T0000Z-210321T1600Z/
Alenuihaha Channel-
313 PM HST Sat Mar 20 2021

...GALE WARNING REMAINS IN EFFECT UNTIL 6 AM HST SUNDAY...

* WHAT...East winds 25 to 35 kt. Seas 8 to 12 feet.

* WHERE...Alenuihaha Channel.

* WHEN...Until 6 AM HST Sunday.

* IMPACTS...Strong winds will cause hazardous seas which could 
  capsize or damage vessels.

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>124-211415-
/O.CON.PHFO.SC.Y.0016.000000T0000Z-210322T0400Z/
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-
313 PM HST Sat Mar 20 2021

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

* WHAT...East winds 20 to 30 kt except north in Maalaea Bay. 
  Seas 8 to 12 feet.

* WHERE...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 and Big Island Southeast 
  Waters.

* WHEN...Until 6 PM HST Sunday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in these conditions.

&&

$$

PHZ120-211415-
/O.CON.PHFO.SC.Y.0017.000000T0000Z-210322T0400Z/
Pailolo Channel-
313 PM HST Sat Mar 20 2021

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

* WHAT...East winds 25 to 30 kt. Seas 7 to 10 feet.

* WHERE...Pailolo Channel.

* WHEN...Until 6 PM HST Sunday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in these conditions.

&&

$$

Burke
555 
WHHW70 PHFO 211330
MWWHFO

URGENT - MARINE WEATHER MESSAGE
National Weather Service Honolulu HI
330 AM HST Sun Mar 21 2021

PHZ121-220230-
/O.EXT.PHFO.GL.W.0007.000000T0000Z-210322T0400Z/
Alenuihaha Channel-
330 AM HST Sun Mar 21 2021

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

* WHAT...East winds 30 to 35 kt. Seas 8 to 12 feet.

* WHERE...Alenuihaha Channel.

* WHEN...Until 6 PM HST this evening.

* IMPACTS...Strong winds will cause hazardous seas which could 
  capsize or damage vessels.

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>124-220230-
/O.EXT.PHFO.SC.Y.0016.000000T0000Z-210322T1600Z/
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 Sun Mar 21 2021

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

* WHAT...East winds 20 to 30 kt except north in Maalaea Bay. 
  Seas 9 to 12 feet.

* WHERE...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 and Big Island Southeast 
  Waters.

* WHEN...Until 6 AM HST Monday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in these conditions.

&&

$$

PHZ120-220230-
/O.EXT.PHFO.SC.Y.0017.000000T0000Z-210322T1600Z/
Pailolo Channel-
330 AM HST Sun Mar 21 2021

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

* WHAT...East winds 25 to 30 kt. Seas 7 to 10 feet.

* WHERE...Pailolo Channel.

* WHEN...Until 6 AM HST Monday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in these conditions.

&&

$$
878 
WHHW70 PHFO 211924
MWWHFO

URGENT - MARINE WEATHER MESSAGE
National Weather Service Honolulu HI
924 AM HST Sun Mar 21 2021

PHZ121-220400-
/O.CON.PHFO.GL.W.0007.000000T0000Z-210322T0400Z/
Alenuihaha Channel-
924 AM HST Sun Mar 21 2021

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

* WHAT...East winds 30 to 35 kt. Seas 8 to 12 feet.

* WHERE...Alenuihaha Channel.

* WHEN...Until 6 PM HST this evening.

* IMPACTS...Strong winds will cause hazardous seas which could 
  capsize or damage vessels.


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>124-220830-
/O.CON.PHFO.SC.Y.0016.000000T0000Z-210322T1600Z/
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-
924 AM HST Sun Mar 21 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM HST MONDAY...

* WHAT...East winds 20 to 30 kt except north in Maalaea Bay. 
  Seas 9 to 11 feet.

* WHERE...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 and Big Island Southeast 
  Waters.

* WHEN...Until 6 AM HST Monday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in these conditions.

&&

$$

PHZ120-220830-
/O.CON.PHFO.SC.Y.0017.000000T0000Z-210322T1600Z/
Pailolo Channel-
924 AM HST Sun Mar 21 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM HST MONDAY...

* WHAT...East winds 25 to 30 kt. Seas 7 to 10 feet.

* WHERE...Pailolo Channel.

* WHEN...Until 6 AM HST Monday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in these conditions.

&&

$$
634 
WHHW70 PHFO 220128
MWWHFO

URGENT - MARINE WEATHER MESSAGE
National Weather Service Honolulu HI
328 PM HST Sun Mar 21 2021

PHZ121-221430-
/O.EXT.PHFO.GL.W.0007.000000T0000Z-210322T1600Z/
Alenuihaha Channel-
328 PM HST Sun Mar 21 2021

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

* WHAT...East winds 30 to 35 kt. Seas 8 to 12 feet.

* WHERE...Alenuihaha Channel.

* WHEN...Until 6 AM HST Monday.

* IMPACTS...Strong winds will cause hazardous seas which could
  capsize or damage vessels.

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>124-221430-
/O.CON.PHFO.SC.Y.0016.000000T0000Z-210322T1600Z/
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-
328 PM HST Sun Mar 21 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM HST MONDAY...

* WHAT...East winds 20 to 25 kt except north in Maalaea Bay. Seas
  8 to 12 feet.

* WHERE...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 and Big Island Southeast 
  Waters.

* WHEN...Until 6 AM HST Monday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in these conditions.

&&

$$

PHZ120-221430-
/O.CON.PHFO.SC.Y.0017.000000T0000Z-210322T1600Z/
Pailolo Channel-
328 PM HST Sun Mar 21 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM HST MONDAY...

* WHAT...East winds 20 to 30 kt. Seas 8 to 10 feet.

* WHERE...Pailolo Channel.

* WHEN...Until 6 AM HST Monday.

* IMPACTS...Conditions will be hazardous to small craft.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in these conditions.

&&

$$
669 
WHHW70 PHFO 220711
MWWHFO

URGENT - MARINE WEATHER MESSAGE
National Weather Service Honolulu HI
911 PM HST Sun Mar 21 2021

PHZ121-222015-
/O.CAN.PHFO.GL.W.0007.000000T0000Z-210322T1600Z/
/O.EXB.PHFO.SC.Y.0016.000000T0000Z-210323T0400Z/
Alenuihaha Channel-
911 PM HST Sun Mar 21 2021

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM HST MONDAY...

...GALE WARNING IS CANCELLED...

* WHAT...East winds 20 to 30 kt. Seas 8 to 12 feet.

* WHERE...Alenuihaha Channel.

* WHEN...Until 6 PM HST Monday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in these conditions.

&&

$$

PHZ110>119-122>124-221600-
/O.CON.PHFO.SC.Y.0016.000000T0000Z-210322T1600Z/
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-
911 PM HST Sun Mar 21 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM HST MONDAY...

* WHAT...East winds 20 to 25 kt except north in Maalaea Bay. 
  Seas 8 to 12 feet.

* WHERE...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 and Big Island Southeast 
  Waters.

* WHEN...Until 6 AM HST Monday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in these conditions.

&&

$$

PHZ120-221600-
/O.CON.PHFO.SC.Y.0017.000000T0000Z-210322T1600Z/
Pailolo Channel-
911 PM HST Sun Mar 21 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM HST MONDAY...

* WHAT...East winds 20 to 25 kt. Seas 7 to 10 feet.

* WHERE...Pailolo Channel.

* WHEN...Until 6 AM HST Monday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in these conditions.

&&

$$
500 
WHHW70 PHFO 221332
MWWHFO

URGENT - MARINE WEATHER MESSAGE
National Weather Service Honolulu HI
332 AM HST Mon Mar 22 2021

PHZ110>119-122>124-221445-
/O.CAN.PHFO.SC.Y.0016.000000T0000Z-210322T1600Z/
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-
332 AM HST Mon Mar 22 2021

...SMALL CRAFT ADVISORY IS CANCELLED...

Winds and seas have fallen below advisory levels. 

$$

PHZ120-221445-
/O.CAN.PHFO.SC.Y.0017.000000T0000Z-210322T1600Z/
Pailolo Channel-
332 AM HST Mon Mar 22 2021

...SMALL CRAFT ADVISORY IS CANCELLED...

Winds and seas have fallen below advisory levels. 

$$

PHZ121-230245-
/O.CON.PHFO.SC.Y.0016.000000T0000Z-210323T0400Z/
Alenuihaha Channel-
332 AM HST Mon Mar 22 2021

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

* WHAT...East winds 20 to 25 kt. Seas 8 to 10 feet.

* WHERE...Alenuihaha Channel.

* WHEN...Until 6 PM HST Monday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in these conditions.

&&

$$

What forecasters said that day

The local office's own words before this small craft advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Honolulu, HI wrote its last area forecast discussion before this small craft advisory went out at Mar 16, 9:56 AM HST, 5 hours 40 minutes earlier.

Area forecast discussion, Mar 16, 9:56 AM HST, 5 hours 40 minutes before
Area Forecast Discussion
National Weather Service Honolulu HI
956 AM HST Tue Mar 16 2021

.SYNOPSIS...
Trade winds will gradually strengthen through Thursday, and become
rather windy on Friday. The windy trades will then continue
through Sunday, followed by a rapid weakening Sunday night through
Monday as a front approaches the islands from the west. A couple
of upper level disturbances passing through will briefly enhance
the trade showers through Thursday. A drier trade wind regime may
arrive over the weekend.

&&

.DISCUSSION...
High pressure to the northwest of the islands will move to the
east over the next 36 to 48 hours, settling in north of the
islands. This will maintain a breezy trade wind pattern over the
islands. The high will slowly shift to the east and strengthen at
the end of the week, providing a boost to the trades for the
weekend. This could result in some advisory level winds at times,
so will be seeing what the higher resolution models show as time
goes on.

An upper levels shortwave swinging through the islands today is
helping to enhance the trade wind showers moving in, particularly
over the smaller islands this morning. An earlier update to the
forecast boosted PoPs and associated fields for this morning.
Showers that were impacting windward Oahu at the start of the day
are starting to wane in part due to the trade wind diurnal trends.
Will be checking the higher resolution models to see if any
adjustments needs to be made for tonight as the shortwave begins
to move away from the islands. The shortwave could also help to
trigger a thunderstorm or two over the Big Islands upper slopes
this afternoon. A general decline in shower activity is expected
Thursday and into the weekend as a trade wind inversion sets up.

A front approaching from the northwest Sunday will disrupt the
strong high to the northeast of the islands, resulting in a
weakening of the trade winds as early as Sunday night. There are
some differences in the global models with the details of the
front, but a general agreement to it reaching the islands Tuesday.
Still a ways out, with plenty of model runs to monitor.

&&

.AVIATION...
The onset of moderate to breezy northeasterly trades marks the
arrival of the lead edge of high pressure presently building
across the Islands from the northwest. Satellite imagery indicates
trades will remain on the wetter side for Kauai and Oahu through
today followed by Molokai and possibly Maui or western Maui late
tonight. While the building trades will tend to focus showers and
MVFR over windward and mauka areas, the presence of an elongated
mid/upper trough axis will facilitate deeper showers capable of
greater leeward penetration, particularly for Oahu where an
increase in lee showers can be expected late this afternoon. For
Big Island, developing inland convection may yield isolated
thunder during peak heating this afternoon.

AIRMET Sierra for mountain obscuration remains in effect for
Windward Kauai and Oahu. Further expansion to Molokai and
potentially Maui may be needed later today.

AIRMET Tango for lee turbulence remains in effect for Kauai and
will be expanded to Oahu no later than this evening.

AIRMET Tango will likely be needed this evening or overnight for
moderate turbulence above 25kft.

&&

.MARINE...
A strong high pressure system northwest of the state is producing
fresh to strong trade winds over the western half of the main
Hawaiian Islands. This high pressure system is moving eastward.
As it moves east, breezy trades will fill in over all the coastal
waters tonight and Wednesday. A Small Craft Advisory in effect for
the waters around Kauai, Oahu, and most of Maui County, will
likely be expanded later today to cover the Big Island and the
rest of Maui County due to the strengthening trades. The trades
are forecast strengthen further Friday or Saturday and may
require the issuance of a Gale Warning for the normally windier
areas.

A High Surf Advisory remains in effect for the east-facing shores
through Wednesday due to exposure to the north swell and building
trade winds. The advisory will likely be extended through the end
of the week as the trades strengthen. A small to moderate
northwest swell will build later today and remain through the end
of the week.

&&

.HFO WATCHES/WARNINGS/ADVISORIES...
High Surf Advisory until 6 PM HST Wednesday for Kauai Windward-
Oahu Koolau-Olomana-Molokai Windward-Maui Windward West-Windward
Haleakala-Big Island North and East.

Small Craft Advisory until 6 AM HST Wednesday for Kauai
Northwest Waters-Kauai Windward Waters-Kauai Leeward Waters-
Kauai Channel-Oahu Windward Waters-Oahu Leeward Waters-Kaiwi
Channel-Pailolo Channel.

Small Craft Advisory until 6 PM HST this evening for Maui County
Windward Waters-Maui County Leeward Waters.

&&

DISCUSSION...M Ballard
AVIATION...JVC
MARINE...Kodama

The office that day

Everything else NWS Honolulu, HI issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 16, 4:30 PM HSTAreal Flood AdvisoryHFOHawaii53 min
Mar 16, 7:29 PM HSTAreal Flood AdvisoryHFOKalawao3 hr
Mar 17, 3:53 AM HSTAreal Flood AdvisoryHFOKalawao3 hr
Mar 17, 11:43 AM HSTWind AdvisoryHFOKalawao9 hr

Nearby

Small Craft Advisories in Hawaii, 2021Every small craft advisory in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.