High Surf Advisory 31, NWS Honolulu, HI

801 
WHHW40 PHFO 040139
CFWHFO

Coastal Hazard Message
National Weather Service Honolulu HI
339 PM HST Fri Dec 3 2021

...HIGH SURF WARNING FOR NORTH FACING SHORES OF NIIHAU KAUAI OAHU
MOLOKAI AND MAUI... 
...HIGH SURF ADVISORY FOR WEST FACING SHORES OF NIIHAU KAUAI OAHU
AND MOLOKAI...

.A very large north-northwest swell will fill in this evening, 
then quickly build tonight and Saturday. Surf will increase slowly
today, then quickly ramp up tonight and Saturday. The swell will 
gradually shift more out of the north beginning Saturday night, 
then slowly lower through the first part of next week.

HIZ001-007-009-017-029-035-037-039-045-047-041445-
/O.CON.PHFO.SU.W.0007.000000T0000Z-211206T1600Z/
Niihau-Oahu North Shore-Olomana-Maui Windward West-Kauai North-
Koolau Windward-Molokai Windward-Molokai North-
Maui Central Valley North-Windward Haleakala-
339 PM HST Fri Dec 3 2021

...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 6 AM HST MONDAY...

* WHAT...Surf heights building to 20 to 30 feet Saturday.

* WHERE...Along north facing shores of Niihau, Kauai, Oahu, 
  Molokai, and Maui.

* WHEN...Until 6 AM HST Monday.

* IMPACTS...High. Expect ocean water occasionally sweeping across
  portions of beaches, very strong breaking waves, and strong
  longshore and rip currents. Breaking waves may occasionally
  impact harbors making navigating the harbor channel dangerous.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Large, breaking surf, significant shorebreak, and dangerous
currents make entering the water very hazardous. Anyone entering
the water could face significant injury or death.

&&

$$

HIZ003-006-040-041445-
/O.CON.PHFO.SU.Y.0031.000000T0000Z-211206T1600Z/
Kauai Southwest-Waianae Coast-Molokai West-
339 PM HST Fri Dec 3 2021

...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 AM HST MONDAY...

* WHAT...Surf heights building to 14 to 18 feet Saturday.

* WHERE...Along west facing shores of Niihau, Kauai, Oahu, and 
  Molokai.

* WHEN...Until 6 AM HST Monday.

* IMPACTS...Moderate. Expect strong breaking waves, shore break,
  and strong longshore and rip currents making swimming difficult
  and dangerous.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Beachgoers, swimmers, and surfers should heed all advice given by
ocean safety officials and exercise caution.

&&

$$

242 
WHHW40 PHFO 041345
CFWHFO

Coastal Hazard Message
National Weather Service Honolulu HI
345 AM HST Sat Dec 4 2021

...HIGH SURF WARNING FOR NORTH FACING SHORES OF NIIHAU KAUAI OAHU
MOLOKAI AND MAUI... 
...HIGH SURF ADVISORY FOR WEST FACING SHORES OF NIIHAU KAUAI OAHU
AND MOLOKAI...

.A very large north-northwest swell will fill in this evening,
then quickly build tonight and Saturday. Surf will increase
slowly today, then quickly ramp up tonight and Saturday. The
swell will gradually shift more out of the north beginning
Saturday night, then slowly lower through the first part of next
week.

HIZ001-007-009-017-029-035-037-039-045-047-050245-
/O.CON.PHFO.SU.W.0007.000000T0000Z-211206T1600Z/
Niihau-Oahu North Shore-Olomana-Maui Windward West-Kauai North-
Koolau Windward-Molokai Windward-Molokai North-
Maui Central Valley North-Windward Haleakala-
345 AM HST Sat Dec 4 2021

...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 6 AM HST MONDAY...

* WHAT...Surf heights building to 25 to 35 feet today.

* WHERE...Along north facing shores of Niihau, Kauai, Oahu, 
  Molokai, and Maui.

* WHEN...Until 6 AM HST Monday.

* IMPACTS...High. Expect ocean water occasionally sweeping 
  across portions of beaches, very strong breaking waves, and 
  strong longshore and rip currents. Breaking waves may 
  occasionally impact harbors making navigating the harbor 
  channel dangerous.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Large, breaking surf, significant shorebreak, and dangerous
currents make entering the water very hazardous. Anyone entering
the water could face significant injury or death.

&&

$$

HIZ053-054-050245-
/O.EXB.PHFO.SU.Y.0031.211204T2200Z-211206T1600Z/
Big Island East-Big Island North-
345 AM HST Sat Dec 4 2021

...HIGH SURF ADVISORY IN EFFECT FROM NOON TODAY TO 6 AM HST
MONDAY...

* WHAT...Surf heights building to 10 to 15 feet today.

* WHERE...Along north facing shores of the Big Island.

* WHEN...From noon today to 6 AM HST Monday.

* IMPACTS...Moderate. Expect strong breaking waves, shore break, 
  and strong longshore and rip currents making swimming 
  difficult and dangerous.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Beachgoers, swimmers, and surfers should heed all advice given by
ocean safety officials and exercise caution.

&&

$$

HIZ003-006-040-050245-
/O.CON.PHFO.SU.Y.0031.000000T0000Z-211206T1600Z/
Kauai Southwest-Waianae Coast-Molokai West-
345 AM HST Sat Dec 4 2021

...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 AM HST MONDAY...

* WHAT...Surf heights building to 14 to 18 feet today.

* WHERE...Along west facing shores of Niihau, Kauai, Oahu, and 
  Molokai.

* WHEN...Until 6 AM HST Monday.

* IMPACTS...Moderate. Expect strong breaking waves, shore break, 
  and strong longshore and rip currents making swimming 
  difficult and dangerous.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Beachgoers, swimmers, and surfers should heed all advice given by
ocean safety officials and exercise caution.

&&

$$

490 
WHHW40 PHFO 041417 CCA
CFWHFO

Coastal Hazard Message...CORRECTED
National Weather Service Honolulu HI
417 AM HST Sat Dec 4 2021

...HIGH SURF WARNING FOR NORTH FACING SHORES OF NIIHAU KAUAI OAHU
MOLOKAI AND MAUI... 
...HIGH SURF ADVISORY FOR WEST FACING SHORES OF NIIHAU KAUAI OAHU
AND MOLOKAI...
...HIGH SURF ADVISORY FOR NORTH FACING SHORES OF THE BIG ISLAND...

.A large north-northwest swell will quickly ramp up today, then 
shift more out of the north. As the swell becomes more northerly 
tonight and Sunday, high surf will also affect north facing shores
of the Big Island.

HIZ001-007-009-017-029-035-037-039-045-047-050245-
/O.CON.PHFO.SU.W.0007.000000T0000Z-211206T1600Z/
Niihau-Oahu North Shore-Olomana-Maui Windward West-Kauai North-
Koolau Windward-Molokai Windward-Molokai North-
Maui Central Valley North-Windward Haleakala-
417 AM HST Sat Dec 4 2021

...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 6 AM HST MONDAY...

* WHAT...Surf heights building to 25 to 35 feet today.

* WHERE...Along north facing shores of Niihau, Kauai, Oahu, 
  Molokai, and Maui.

* WHEN...Until 6 AM HST Monday.

* IMPACTS...High. Expect ocean water occasionally sweeping 
  across portions of beaches, very strong breaking waves, and 
  strong longshore and rip currents. Breaking waves may 
  occasionally impact harbors making navigating the harbor 
  channel dangerous.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Large, breaking surf, significant shorebreak, and dangerous
currents make entering the water very hazardous. Anyone entering
the water could face significant injury or death.

&&

$$

HIZ053-054-050245-
/O.EXB.PHFO.SU.Y.0031.211204T2200Z-211206T1600Z/
Big Island East-Big Island North-
417 AM HST Sat Dec 4 2021

...HIGH SURF ADVISORY IN EFFECT FROM NOON TODAY TO 6 AM HST
MONDAY...

* WHAT...Surf heights building to 10 to 15 feet today.

* WHERE...Along north facing shores of the Big Island.

* WHEN...From noon today to 6 AM HST Monday.

* IMPACTS...Moderate. Expect strong breaking waves, shore break, 
  and strong longshore and rip currents making swimming 
  difficult and dangerous.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Beachgoers, swimmers, and surfers should heed all advice given by
ocean safety officials and exercise caution.

&&

$$

HIZ003-006-040-050245-
/O.CON.PHFO.SU.Y.0031.000000T0000Z-211206T1600Z/
Kauai Southwest-Waianae Coast-Molokai West-
417 AM HST Sat Dec 4 2021

...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 AM HST MONDAY...

* WHAT...Surf heights building to 14 to 18 feet today.

* WHERE...Along west facing shores of Niihau, Kauai, Oahu, and 
  Molokai.

* WHEN...Until 6 AM HST Monday.

* IMPACTS...Moderate. Expect strong breaking waves, shore break, 
  and strong longshore and rip currents making swimming 
  difficult and dangerous.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Beachgoers, swimmers, and surfers should heed all advice given by
ocean safety officials and exercise caution.

&&

$$

000 
WHHW40 PHFO 050137
CFWHFO

Coastal Hazard Message
National Weather Service Honolulu HI
337 PM HST Sat Dec 4 2021

...HIGH SURF WARNING FOR NORTH FACING SHORES OF NIIHAU KAUAI OAHU
MOLOKAI MAUI AND BIG ISLAND... 

...HIGH SURF WARNING FOR WEST FACING SHORES OF THE BIG ISLAND...

...HIGH SURF ADVISORY FOR WEST FACING SHORES OF NIIHAU KAUAI OAHU
MOLOKAI AND MAUI... 

.A large north-northwest swell will quickly ramp up tonight, then
shift more out of the north. As the swell becomes more northerly 
tonight and Sunday, high surf will also affect north and west 
facing shores of the Big Island and Maui.

HIZ053-054-051445-
/O.UPG.PHFO.SU.Y.0031.000000T0000Z-211206T1600Z/
/O.EXA.PHFO.SU.W.0007.000000T0000Z-211206T1600Z/
Big Island East-Big Island North-
337 PM HST Sat Dec 4 2021

...HIGH SURF WARNING IN EFFECT UNTIL 6 AM HST MONDAY...

* WHAT...Surf of 10 to 15 feet, building to 20 to 30 feet Sunday.

* WHERE... North facing shores of the Big Island.

* WHEN...Until 6 AM HST Monday.

* IMPACTS...Moderate. Expect strong breaking waves, shore break, 
  and strong longshore and rip currents making swimming 
  difficult and dangerous.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Large, breaking surf, significant shorebreak, and dangerous
currents make entering the water very hazardous.

Anyone entering the water could face significant injury or death.

Boaters should be aware of an increased number of surfers and
body boarders utilizing the harbor channel to access surfing
areas.

&&

$$

HIZ026-051445-
/O.EXA.PHFO.SU.W.0007.000000T0000Z-211206T1600Z/
Kohala-
337 PM HST Sat Dec 4 2021

...HIGH SURF WARNING IN EFFECT UNTIL 6 AM HST MONDAY...

* WHAT...Surf heights building to 8 to 12 feet Sunday along west
  facing shores.

* WHERE... North Kona District around Kua Bay on the Big Island.

* WHEN...Until 6 AM HST Monday.

* IMPACTS...High. Expect ocean water occasionally sweeping 
  across portions of beaches, very strong breaking waves, and 
  strong longshore and rip currents. Breaking waves may 
  occasionally impact harbors making navigating the harbor 
  channel dangerous.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Large, breaking surf, significant shorebreak, and dangerous
currents make entering the water very hazardous.

Anyone entering the water could face significant injury or death.

Boaters should be aware of an increased number of surfers and
body boarders utilizing the harbor channel to access surfing
areas.

&&

$$

HIZ001-007-009-017-029-035-037-039-045-047-051445-
/O.CON.PHFO.SU.W.0007.000000T0000Z-211206T1600Z/
Niihau-Oahu North Shore-Olomana-Maui Windward West-Kauai North-
Koolau Windward-Molokai Windward-Molokai North-
Maui Central Valley North-Windward Haleakala-
337 PM HST Sat Dec 4 2021

...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 6 AM HST MONDAY...

* WHAT...Surf of 25 to 35 feet along north facing shores.

* WHERE...Niihau, Kauai, Oahu, Molokai, and Maui.

* WHEN...Until 6 AM HST Monday.

* IMPACTS...High. Expect ocean water occasionally sweeping 
  across portions of beaches, very strong breaking waves, and 
  strong longshore and rip currents. Breaking waves may 
  occasionally impact harbors making navigating the harbor 
  channel dangerous.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Large, breaking surf, significant shorebreak, and dangerous
currents make entering the water very hazardous.

Anyone entering the water could face significant injury or death.

Boaters should be aware of an increased number of surfers and
body boarders utilizing the harbor channel to access surfing
areas.

&&

$$

HIZ018-051445-
/O.EXA.PHFO.SU.Y.0031.000000T0000Z-211206T1600Z/
Maui Leeward West-
337 PM HST Sat Dec 4 2021

...HIGH SURF ADVISORY IN EFFECT UNTIL 6 AM HST MONDAY...

* WHAT...Surf heights building to 10 to 14 feet along west facing
  shores Sunday.

* WHERE...Maui Leeward West near Honolua Bay.

* WHEN...Until 6 AM HST Monday.

* IMPACTS...Moderate. Expect strong breaking waves, shore break, 
  and strong longshore and rip currents making swimming 
  difficult and dangerous.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Beachgoers, swimmers, and surfers should heed all advice given by
ocean safety officials and exercise caution.

&&

$$

HIZ003-006-040-051445-
/O.CON.PHFO.SU.Y.0031.000000T0000Z-211206T1600Z/
Kauai Southwest-Waianae Coast-Molokai West-
337 PM HST Sat Dec 4 2021

...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 AM HST MONDAY...

* WHAT...Surf of 14 to 18 feet along west facing shores.

* WHERE...Along west facing shores of Niihau, Kauai, Oahu, and 
  Molokai.

* WHEN...Until 6 AM HST Monday.

* IMPACTS...Moderate. Expect strong breaking waves, shore break, 
  and strong longshore and rip currents making swimming 
  difficult and dangerous.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Beachgoers, swimmers, and surfers should heed all advice given by
ocean safety officials and exercise caution.

&&

$$

738 
WHHW40 PHFO 051322
CFWHFO

Coastal Hazard Message
National Weather Service Honolulu HI
322 AM HST Sun Dec 5 2021

...HIGH SURF WARNING FOR NORTH FACING SHORES OF NIIHAU KAUAI OAHU
MOLOKAI MAUI AND BIG ISLAND...

...HIGH SURF WARNING FOR WEST FACING SHORES OF THE BIG ISLAND...

...HIGH SURF ADVISORY FOR WEST FACING SHORES OF NIIHAU KAUAI OAHU
MOLOKAI AND MAUI...

.A large north swell will persist through tonight that will be
affecting the north and west facing shores of most islands.

HIZ001-007-009-017-026-029-035-037-039-045-047-053-054-060230-
/O.CON.PHFO.SU.W.0007.000000T0000Z-211206T1600Z/
Niihau-Oahu North Shore-Olomana-Maui Windward West-Kohala-
Kauai North-Koolau Windward-Molokai Windward-Molokai North-
Maui Central Valley North-Windward Haleakala-Big Island East-
Big Island North-
322 AM HST Sun Dec 5 2021

...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 6 AM HST MONDAY...

* WHAT...Surf of 25 to 35 feet along north facing shores.

* WHERE...Niihau, Kauai, Oahu, Molokai, and Maui.

* WHEN...Until 6 AM HST Monday.

* IMPACTS...High. Expect ocean water occasionally sweeping 
  across portions of beaches, very strong breaking waves, and 
  strong longshore and rip currents. Breaking waves may 
  occasionally impact harbors making navigating the harbor 
  channel dangerous.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Large, breaking surf, significant shorebreak, and dangerous
currents make entering the water very hazardous.

Anyone entering the water could face significant injury or death.

Boaters should be aware of an increased number of surfers and
body boarders utilizing the harbor channel to access surfing
areas.

&&

$$

HIZ003-006-018-040-060230-
/O.CON.PHFO.SU.Y.0031.000000T0000Z-211206T1600Z/
Kauai Southwest-Waianae Coast-Maui Leeward West-Molokai West-
322 AM HST Sun Dec 5 2021

...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 AM HST MONDAY...

* WHAT...Surf of 14 to 18 feet along west facing shores.

* WHERE...Along west facing shores of Niihau, Kauai, Oahu,
  Molokai, and Maui.

* WHEN...Until 6 AM HST Monday.

* IMPACTS...Moderate. Expect strong breaking waves, shore break, 
  and strong longshore and rip currents making swimming 
  difficult and dangerous.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Beachgoers, swimmers, and surfers should heed all advice given by
ocean safety officials and exercise caution.

&&

$$

261 
WHHW40 PHFO 051355 CCA
CFWHFO

Coastal Hazard Message...CORRECTED
National Weather Service Honolulu HI
355 AM HST Sun Dec 5 2021

...HIGH SURF WARNING FOR NORTH FACING SHORES OF NIIHAU KAUAI OAHU
MOLOKAI MAUI AND BIG ISLAND...

...HIGH SURF WARNING FOR WEST FACING SHORES OF THE BIG ISLAND...

...HIGH SURF ADVISORY FOR WEST FACING SHORES OF NIIHAU KAUAI OAHU
MOLOKAI AND MAUI...

.A large north swell will persist through tonight that will be
affecting the north and west facing shores of most islands.

HIZ001-007-009-017-026-029-035-037-039-045-047-053-054-060230-
/O.COR.PHFO.SU.W.0007.000000T0000Z-211206T1600Z/
Niihau-Oahu North Shore-Olomana-Maui Windward West-Kohala-
Kauai North-Koolau Windward-Molokai Windward-Molokai North-
Maui Central Valley North-Windward Haleakala-Big Island East-
Big Island North-
355 AM HST Sun Dec 5 2021

...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 6 AM HST MONDAY...

* WHAT...Surf of 25 to 35 feet along north facing shores, and 8 to
  12 feet along the west facing shore of the Big island.

* WHERE...Niihau, Kauai, Oahu, Molokai, Maui, and west facing
  shores of the Big Island north of Kua Bay.

* WHEN...Until 6 AM HST Monday.

* IMPACTS...High. Expect ocean water occasionally sweeping 
  across portions of beaches, very strong breaking waves, and 
  strong longshore and rip currents. Breaking waves may 
  occasionally impact harbors making navigating the harbor 
  channel dangerous.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Large, breaking surf, significant shorebreak, and dangerous
currents make entering the water very hazardous.

Anyone entering the water could face significant injury or death.

Boaters should be aware of an increased number of surfers and
body boarders utilizing the harbor channel to access surfing
areas.

&&

$$

HIZ003-006-018-040-060230-
/O.CON.PHFO.SU.Y.0031.000000T0000Z-211206T1600Z/
Kauai Southwest-Waianae Coast-Maui Leeward West-Molokai West-
355 AM HST Sun Dec 5 2021

...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 AM HST MONDAY...

* WHAT...Surf of 14 to 18 feet along west facing shores.

* WHERE...Along west facing shores of Niihau, Kauai, Oahu,
  Molokai, and Maui.

* WHEN...Until 6 AM HST Monday.

* IMPACTS...Moderate. Expect strong breaking waves, shore break, 
  and strong longshore and rip currents making swimming 
  difficult and dangerous.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Beachgoers, swimmers, and surfers should heed all advice given by
ocean safety officials and exercise caution.

&&

$$

464 
WHHW40 PHFO 051406 CCB 
CFWHFO

Coastal Hazard Message...CORRECTED
National Weather Service Honolulu HI
406 AM HST Sun Dec 5 2021

...HIGH SURF WARNING FOR NORTH FACING SHORES OF NIIHAU KAUAI OAHU
MOLOKAI MAUI AND BIG ISLAND...

...HIGH SURF WARNING FOR WEST FACING SHORES OF THE BIG ISLAND...

...HIGH SURF ADVISORY FOR WEST FACING SHORES OF NIIHAU KAUAI OAHU
MOLOKAI AND MAUI...

.A large north swell will persist through tonight that will be
affecting the north and west facing shores of most islands.

HIZ001-007-009-017-026-029-035-037-039-045-047-053-054-060230-
/O.COR.PHFO.SU.W.0007.000000T0000Z-211206T1600Z/
Niihau-Oahu North Shore-Olomana-Maui Windward West-Kohala-
Kauai North-Koolau Windward-Molokai Windward-Molokai North-
Maui Central Valley North-Windward Haleakala-Big Island East-
Big Island North-
406 AM HST Sun Dec 5 2021

...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 6 AM HST MONDAY...

* WHAT...Surf of 25 to 35 feet along north facing shores of
  Niihau, Kauai, Molokai Oahu, and Maui, and 20 to 30 feet along
  the north facing shores of the Big Island. Also, surf of 8 to 12
  feet along the west facing shore of the Big island north of Kua
  Bay.

* WHERE...Niihau, Kauai, Oahu, Molokai, Maui, and north and west
  facing shores of the Big Island.

* WHEN...Until 6 AM HST Monday.

* IMPACTS...High. Expect ocean water occasionally sweeping 
  across portions of beaches, very strong breaking waves, and 
  strong longshore and rip currents. Breaking waves may 
  occasionally impact harbors making navigating the harbor 
  channel dangerous.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Large, breaking surf, significant shorebreak, and dangerous
currents make entering the water very hazardous.

Anyone entering the water could face significant injury or death.

Boaters should be aware of an increased number of surfers and
body boarders utilizing the harbor channel to access surfing
areas.

&&

$$

HIZ003-006-018-040-060230-
/O.CON.PHFO.SU.Y.0031.000000T0000Z-211206T1600Z/
Kauai Southwest-Waianae Coast-Maui Leeward West-Molokai West-
406 AM HST Sun Dec 5 2021

...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 AM HST MONDAY...

* WHAT...Surf of 14 to 18 feet along west facing shores.

* WHERE...Along west facing shores of Niihau, Kauai, Oahu,
  Molokai, and Maui.

* WHEN...Until 6 AM HST Monday.

* IMPACTS...Moderate. Expect strong breaking waves, shore break, 
  and strong longshore and rip currents making swimming 
  difficult and dangerous.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Beachgoers, swimmers, and surfers should heed all advice given by
ocean safety officials and exercise caution.

&&

$$

775 
WHHW40 PHFO 051732
CFWHFO

Coastal Hazard Message
National Weather Service Honolulu HI
732 AM HST Sun Dec 5 2021

...HIGH SURF WARNING FOR NORTH FACING SHORES OF NIIHAU KAUAI OAHU
MOLOKAI MAUI AND BIG ISLAND...

...HIGH SURF WARNING FOR WEST FACING SHORES OF THE BIG ISLAND...

...HIGH SURF ADVISORY FOR WEST FACING SHORES OF NIIHAU KAUAI OAHU
MOLOKAI AND MAUI...

.A large north swell will peak today then decline tonight and
Monday. The large swell combined with high astronomical tides may
produce runup along north facing shores this morning.


HIZ001-007-009-017-026-029-035-037-039-045-047-053-054-060645-
/O.CON.PHFO.SU.W.0007.000000T0000Z-211206T1600Z/
Niihau-Oahu North Shore-Olomana-Maui Windward West-Kohala-
Kauai North-Koolau Windward-Molokai Windward-Molokai North-
Maui Central Valley North-Windward Haleakala-Big Island East-
Big Island North-
732 AM HST Sun Dec 5 2021

...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 6 AM HST MONDAY...

* WHAT...Surf of 30 to 40 feet along north facing shores of Kauai
  and Niihau, 25 to 35 feet along north facing shores of Oahu,
  Molokai, and Maui, and 20 to 30 feet along the north facing
  shores of the Big Island. Surf of 8 to 12 feet along the west 
  facing shore of the Big island north of Kua Bay.

* WHERE...Niihau, Kauai, Oahu, Molokai, Maui, and north and west 
  facing shores of the Big Island.

* WHEN...Until 6 AM HST Monday.

* IMPACTS...High. Expect ocean water occasionally sweeping 
  across portions of beaches, very strong breaking waves, and 
  strong longshore and rip currents. Breaking waves may 
  occasionally impact harbors making navigating the harbor 
  channel dangerous.

* ADDITIONAL DETAILS...High astronomical tides will combine with
  the peaking swell to produce runup along north facing shores
  this morning, leading to areas of coastal erosion and water
  affecting coastal roads.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Large, breaking surf, significant shorebreak, and dangerous
currents make entering the water very hazardous.

Anyone entering the water could face significant injury or death.

Boaters should be aware of an increased number of surfers and
body boarders utilizing the harbor channel to access surfing
areas.

&&

$$

HIZ003-006-018-040-060645-
/O.CON.PHFO.SU.Y.0031.000000T0000Z-211206T1600Z/
Kauai Southwest-Waianae Coast-Maui Leeward West-Molokai West-
732 AM HST Sun Dec 5 2021

...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 AM HST MONDAY...

* WHAT...Surf of 14 to 18 feet along west facing shores.

* WHERE...Along west facing shores of Niihau, Kauai, Oahu, 
  Molokai, and Maui.

* WHEN...Until 6 AM HST Monday.

* IMPACTS...Moderate. Expect strong breaking waves, shore break,
  and strong longshore and rip currents making swimming difficult
  and dangerous.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Beachgoers, swimmers, and surfers should heed all advice given by
ocean safety officials and exercise caution.

&&

$$

674 
WHHW40 PHFO 060135
CFWHFO

Coastal Hazard Message
National Weather Service Honolulu HI
335 PM HST Sun Dec 5 2021

...HIGH SURF WARNING FOR NORTH FACING SHORES OF NIIHAU KAUAI OAHU
MOLOKAI MAUI AND BIG ISLAND...

...HIGH SURF WARNING FOR WEST FACING SHORES OF THE BIG ISLAND...

...HIGH SURF ADVISORY FOR WEST FACING SHORES OF NIIHAU KAUAI OAHU
MOLOKAI AND MAUI...

...COASTAL FLOOD STATEMENT IN EFFECT FOR ALL HAWAIIAN ISLANDS...

.A large, though declining, north swell will continue to produce
large surf overnight. The large swell combined with high 
astronomical tides may produce elevated runup along north facing 
shores in the predawn hours.

HIZ001-007-009-017-026-029-035-037-039-045-047-053-054-061445-
/O.NEW.PHFO.CF.S.0002.211206T1200Z-211206T2000Z/
/O.CON.PHFO.SU.W.0007.000000T0000Z-211206T1600Z/
Niihau-Oahu North Shore-Olomana-Maui Windward West-Kohala-
Kauai North-Koolau Windward-Molokai Windward-Molokai North-
Maui Central Valley North-Windward Haleakala-Big Island East-
Big Island North-
335 PM HST Sun Dec 5 2021

...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 6 AM HST MONDAY...

* WHAT...Surf of 20 to 28 feet along north facing shores of Niihau,
  Kauai, Oahu, Molokai, and Maui, and 15 to 25 feet along the 
  north facing shores of the Big Island. Surf of 8 to 12 feet 
  along the west facing shore of the Big island north of Kua Bay. 
  For the Coastal Flood Statement, isolated minor coastal flooding
  expected around high tide late tonight and early Monday 
  morning.

* WHERE...Portions of Kauai, Maui, Molokai, Niihau, Oahu and the
  Big Island.

* WHEN...For the High Surf Warning, until 6 AM HST Monday. For the
  Coastal Flood Statement, from 2 AM HST Monday through Monday 
  morning.

* IMPACTS...Flooding of beaches that are normally dry, minor
  coastal erosion, and saltwater inundation. High. Expect ocean
  water occasionally sweeping across portions of beaches, very
  strong breaking waves, and strong longshore and rip currents.
  Breaking waves may occasionally impact harbors making navigating
  the harbor channel dangerous.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Large, breaking surf, significant shorebreak, and dangerous
currents make entering the water very hazardous.

Anyone entering the water could face significant injury or death.

Boaters should be aware of an increased number of surfers and
body boarders utilizing the harbor channel to access surfing
areas.

&&

Submit your coastal flooding photos to the University of Hawaii
Sea Grant College Program's Hawaii and Pacific Islands King
Tides Project at: 

PacificIslandsKingTides.org

$$

HIZ003-006-018-040-061445-
/O.NEW.PHFO.CF.S.0002.211206T1200Z-211206T2000Z/
/O.CON.PHFO.SU.Y.0031.000000T0000Z-211206T1600Z/
Kauai Southwest-Waianae Coast-Maui Leeward West-Molokai West-
335 PM HST Sun Dec 5 2021

...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 AM HST MONDAY...

* WHAT...Surf of 8 to 12 feet along west facing shores. For the 
  Coastal Flood Statement, isolated minor coastal flooding 
  expected around high tide late tonight and early Monday morning.

* WHERE...Along west facing shores of Niihau, Kauai, Oahu, 
  Molokai, and Maui.

* WHEN...For the High Surf Advisory, until 6 AM HST Monday. For
  the Coastal Flood Statement, from 2 AM HST Monday through 
  Monday morning.

* IMPACTS...Flooding of beaches that are normally dry, minor 
  coastal erosion, and saltwater inundation. Moderate. Expect 
  strong breaking waves, shore break, and strong longshore and 
  rip currents making swimming difficult and dangerous.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Beachgoers, swimmers, and surfers should heed all advice given by
ocean safety officials and exercise caution.

&&

Submit your coastal flooding photos to the University of Hawaii
Sea Grant College Program's Hawaii and Pacific Islands King
Tides Project at: 

PacificIslandsKingTides.org

$$

HIZ016-023-030>034-038-041>044-046-048>052-061445-
/O.NEW.PHFO.CF.S.0002.211206T1200Z-211206T2000Z/
Kahoolawe-Kona-Kauai East-Kauai South-East Honolulu-
Honolulu Metro-Ewa Plain-Molokai Southeast-Molokai Leeward South-
Lanai Windward-Lanai Leeward-Lanai South-
Maui Central Valley South-Kipahulu-South Maui/Upcountry-
South Haleakala-Big Island South-Big Island Southeast-
335 PM HST Sun Dec 5 2021

* WHAT...Isolated minor coastal flooding expected around high 
  tide late tonight and early Monday morning.

* WHERE...Portions of Kahoolawe, Kauai, Lanai, Maui, Molokai, 
  Oahu and the Big Island Hawaii.

* WHEN...From 2 AM HST Monday through Monday morning.

* IMPACTS...Flooding of beaches that are normally dry, minor 
  coastal erosion, and saltwater inundation.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Avoid driving through flooded roadways. If you are forced to
drive through salt water, be sure to rinse your vehicle with
fresh water. Move electronics, vehicles or other valuables to
higher ground. Monitor vessels to ensure mooring lines don't get
too tight and watchout for overwash around boat ramps. Secure
canoes or other watercraft stowed on beaches.

&&

Submit your coastal flooding photos to the University of Hawaii
Sea Grant College Program's Hawaii and Pacific Islands King
Tides Project at: 

PacificIslandsKingTides.org

$$
Wroe

913 
WHHW40 PHFO 061337
CFWHFO

Coastal Hazard Message
National Weather Service Honolulu HI
337 AM HST Mon Dec 6 2021

...HIGH SURF ADVISORY FOR NORTH FACING SHORES OF NIIHAU KAUAI 
OAHU MOLOKAI MAUI AND BIG ISLAND...

...COASTAL FLOOD STATEMENT IN EFFECT FOR ALL HAWAIIAN ISLANDS...

.A recently large, though declining, north swell will continue to
produce large surf. The large swell combined with high astronomical
tides may produce elevated runup along north facing shores through
the day. 

Strong southerly winds within and near recently strong convergent
overnight rain bands developing far east of a kona low northwest of 
Kauai have produced periods of rough, short period chop that will be 
impacting south facing shores today. During times of morning high
tides, there is the potential for the nuisance flooding of low 
lying areas and local area roadways.

HIZ001-007-009-017-026-029-035-037-039-045-047-053-054-070245-
/O.CAN.PHFO.SU.W.0007.000000T0000Z-211206T1600Z/
/O.NEW.PHFO.SU.Y.0032.211206T1337Z-211207T0400Z/
/O.EXT.PHFO.CF.S.0002.000000T0000Z-211207T0000Z/
Niihau-Oahu North Shore-Olomana-Maui Windward West-Kohala-
Kauai North-Koolau Windward-Molokai Windward-Molokai North-
Maui Central Valley North-Windward Haleakala-Big Island East-
Big Island North-
337 AM HST Mon Dec 6 2021

...HIGH SURF ADVISORY IN EFFECT UNTIL 6 PM HST THIS EVENING...

...HIGH SURF WARNING IS CANCELLED...

* WHAT...Large breaking waves of 15 to 20 feet. Isolated minor 
  coastal flooding during high tide times.

* WHERE...North facing shore of Kauai, Maui, Molokai, Niihau, Oahu
  and Big Island.

* WHEN...For the High Surf Advisory, until 6 PM HST this evening.
  For the Coastal Flood Statement, until 2 PM HST this afternoon.

* IMPACTS...Flooding of beaches that are normally dry, minor
  coastal erosion, and saltwater inundation. Moderate. Expect
  strong breaking waves, shore break, and strong longshore and rip
  currents making swimming difficult and dangerous.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Avoid driving through flooded roadways. If you are forced to
drive through salt water, be sure to rinse your vehicle with
fresh water. Move electronics, vehicles or other valuables to
higher ground. Monitor vessels to ensure mooring lines don't get
too tight and watch out for overwash around boat ramps. Secure
canoes or other watercraft stowed on beaches.

Beachgoers, swimmers, and surfers should heed all advice given by
ocean safety officials and exercise caution.

&&

Submit your coastal flooding photos to the University of Hawaii
Sea Grant College Program's Hawaii and Pacific Islands King
Tides Project at: 

PacificIslandsKingTides.org

$$

HIZ003-006-018-040-070000-
/O.CAN.PHFO.SU.Y.0031.000000T0000Z-211206T1600Z/
/O.EXT.PHFO.CF.S.0002.000000T0000Z-211207T0000Z/
Kauai Southwest-Waianae Coast-Maui Leeward West-Molokai West-
337 AM HST Mon Dec 6 2021

...HIGH SURF ADVISORY IS CANCELLED...

* WHAT...Surf has fallen below 12 feet along west facing shores.

* WHERE...West facing shores.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Avoid driving through flooded roadways. If you are forced to
drive through salt water, be sure to rinse your vehicle with
fresh water. Move electronics, vehicles or other valuables to
higher ground. Monitor vessels to ensure mooring lines don't get
too tight and watch out for overwash around boat ramps. Secure
canoes or other watercraft stowed on beaches.

&&

Submit your coastal flooding photos to the University of Hawaii
Sea Grant College Program's Hawaii and Pacific Islands King
Tides Project at: 

PacificIslandsKingTides.org

$$

HIZ016-023-030>034-038-041>044-046-048>052-070000-
/O.EXT.PHFO.CF.S.0002.000000T0000Z-211207T0000Z/
Kahoolawe-Kona-Kauai East-Kauai South-East Honolulu-
Honolulu Metro-Ewa Plain-Molokai Southeast-Molokai Leeward South-
Lanai Windward-Lanai Leeward-Lanai South-
Maui Central Valley South-Kipahulu-South Maui/Upcountry-
South Haleakala-Big Island South-Big Island Southeast-
337 AM HST Mon Dec 6 2021

* WHAT...Isolated minor coastal flooding expected around high tide
  late this morning.

* WHERE...Low lying coastal areas of Kahoolawe, Kauai, Lanai,
  Maui, Molokai, Oahu and Big Island.

* WHEN...Until 2 PM HST this afternoon.

* IMPACTS...Flooding of beaches that are normally dry, minor
  coastal erosion, and saltwater inundation.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Avoid driving through flooded roadways. If you are forced to
drive through salt water, be sure to rinse your vehicle with
fresh water. Move electronics, vehicles or other valuables to
higher ground. Monitor vessels to ensure mooring lines don't get
too tight and watch out for overwash around boat ramps. Secure
canoes or other watercraft stowed on beaches.

&&

Submit your coastal flooding photos to the University of Hawaii
Sea Grant College Program's Hawaii and Pacific Islands King
Tides Project at: 

PacificIslandsKingTides.org

$$

Area Forecast Discussion
National Weather Service Honolulu HI
327 AM HST Fri Dec 3 2021

.SYNOPSIS...
Unsettled weather will persist through the weekend and likely
through the first half of next week. A cold front will be moving
into Maui County in the coming hours, and on to the Big Island
this afternoon, where it is slated to stall tonight and Saturday.
A low pressure system will form just to the northwest of Kauai on
Saturday and Saturday night, causing the winds to turn southerly
on Sunday and persist into early next week. Aided by a nearly
stationary upper level trough, unsettled conditions are likely
through Wednesday across most if not all of the main Hawaiian
Islands.

&&

.DISCUSSION...
Through this afternoon.

Not a lot of changes made to the forecast package. The front is
pushing through Oahu as of 2 am HST, and heading into Maui County.
North to northwest winds will spreading to Oahu in the next
couple of hours. Kauai County in under a strengthening north to
northwest wind flow. Barking Sands, on the west end of Kauai has
north wind at 20 mph this hour. Lihue, which is blocked by the
mountains, has northwest winds of 12 mph. Some stronger downslope
winds are likely to come into play over on the southeast side of
the island as the day progresses. This surge of very strong winds
is likely to start diminishing this afternoon. With the showers,
although there aren't much clouds on satellite imagery to the
north of Kauai, there are plenty of small showers coming in with
this northerly wind flow.

The initial surge of showers that pushed through Oahu and now
Maui County, without much noise. There were a few brief heavy
showers, including one threshold rain alarm at Lahainaluna Maui a
few minutes ago. These clouds and showers with the initial surge,
appears to be struggling to reach westernmost Big Island, from
Upolu Point to Kailua-Kona Airport. Perhaps due to a offshore land
breeze. There is a second surge of showers, now pushing through Oahu,
which is likely the front. So more showers will be moving into
Maui County in the next couple of hours.

While Kauai and Oahu calms down in the way of heavy showers, the
focus shifts to Maui County where the front is expected to
struggle through the county for a good part of the day. A strong
upper level disturbance rotating around the upper trough has to
potential to set off a good chance of a few thunderstorms to
Maui County and the Big Island mainly this afternoon.

The front will usher in a cool air mass affecting primarily Kauai
and Oahu. The day time for today and Saturday will be around 80
degrees F. Nighttime minimums tonight will be in the 60s. Dew
points are tab to be in the upper 40's in interior Kauai and 50's
across Oahu tonight. Dew point temps will be on the rise Saturday
as the winds turn southerly.

The islands are under a complicated weather scenario, so there will
be refinement to the forecast.

.PREVIOUS DISCUSSION...
An ill-defined cold front will be ushering in a period of unsettled
weather for the main Hawaiian Islands that will last through the
weekend and into early next week. The front is likely over Kauai
with northwest winds behind the boundary. It is advancing towards
Oahu. Complicating the weather map is the north to south oriented
trough that had stalled in the Kauai Channel earlier in the day,
but is now in the process of being absorb by the front. Not to be
confused, the actual front is noted in the satellite imagery as
the leading of a cloud field, some 240 miles NW of Kauai.
Northerly winds are noted blowing north to south across this
front, thus making it as a dissipating front. So, from now on, we
will be focusing the new cold front currently advancing toward
Oahu. We this said, the strong northerly winds are lagging a few
hours behind the front, but should reaching Kauai just before
sunrise Friday.

The timing has the cold front reaching Oahu around midnight
tonight, then it is on to Maui County after midnight. The front is
slated to stall over or in the vicinity of the Big Island Friday
night and Saturday. A strong upper level disturbance will be
moving into the islands' area Friday that will accentuate the
moisture in place especially, especially Maui and Big Island
counties. On Saturday and Saturday night, another but stronger
upper level disturbance will produce a surface low northwest of
Kauai. This low will bring on a moist southerly wind flow for all
islands by Saturday night. The front that had stalled near the
Big Island is slated to move west as a trough and dissipates. A
Flash Flood Watch is in effect for the entire main Hawaiian
Islands, good through the weekend.

Under the northerly wind flow, is a cooler air mass that will
usher in cooler air mass with daytime highs around 80 and dew
points in the upper 50's and lower 60's. The southerly winds will
change all this, boosting the dew points into the mid 60's. It
should be noted that the post frontal winds are expected to be
rather strong over Kauai, warranting to a Wind Advisory covering
the Friday time period.

An approaching upper level disturbance will bring on very strong
winds to the Big Island summits on Friday night, and continuing
into early next week. A High Wind Warning has been issued that
will become effective from 6 pm HST Friday through late Sunday
night. Additionally, a Wind Advisory has been issued for the
summits of Haleakala, effective from 6 pm HST Friday through 6 am
HST Monday as well for lesser but still very strong winds.

A lot of weather is on tap for the Big Island summits in the days
ahead. Snow is expected over the Big Island summits as the front
stalls near the Big Island Friday night into Saturday. And with
the expected strong winds, a Blizzard Warning is now in effect
from Friday night through Saturday night for the Big Island
summits.

The surface low will be supported by a strong upper level low
above it Saturday night. These two features will linger west of
Kauai through at least Tuesday. Instability, along with low level
convergence, will increase rainfall chances for a good portion of
the state Saturday night through Tuesday. This type of weather
scenario, is very difficult to pin down impact details. Heavy
rainfall will be a threat and shower bands may line up over
portions of the state for extended periods of time, increasing the
threat for flooding. The southerly winds may strengthen to where
locally gusty winds may affect the so-call windward side of the
islands, such as the Kailua and Kaneohe areas of Oahu.

&&

.AVIATION...
A band of showers along a frontal boundary will continue moving
through the island chain today. Land breezes cleared out Big
island skies temporarily, but clouds and showers will increase
there as the frontal cloud band approaches. AIRMET Sierra for
mountain obscuration is in effect for Kauai, Oahu and Molokai,
but will likely be expanded to include Maui and the Big Island
later today. Post-frontal clouds and showers later in the forecast
period could contain IFR ceilings and visibilities, resulting in
more extensive mountain obscuration. With strong winds moving in
behind the front, AIRMET Tango may also be needed for mechanical
turbulence and sustained wind speeds in excess of 30kts.

&&

.MARINE...
A vigorous cold front has begun moving through the state from the
northwest this morning. Winds have been turning toward the north
and are increasing in speed as the front begins to move down the
island chain. The front is expected to stall near the Big Island
tonight and Saturday as a strong low aloft develops near Kauai.
The low aloft will spawn a surface low just west of Kauai Saturday
night, with this kona low lingering near the islands for at least
several days. A convergence band of showers east of the low will
develop over the islands, with a strong potential for unsettled
weather.

As the low develops; today's strong northwest and north winds
will shift to the west and weaken Saturday, then shift to the
south and southwest and strengthen Sunday. Although confidence is
not all that high, generally expecting low pressure to linger west
of Kauai through the middle of next week, keeping an unstable
southerly flow in place over the area.

As the front initially moves down the island chain, strong and
gusty winds are expected, especially in and near any heavy showers
or thunderstorms that may develop, with the potential for strong
thunderstorms. A Gale Warning is posted for waters between Kauai
and Niihau as winds surge today, with winds and seas ramping up
to the point that a Small Craft Advisory (SCA) has been posted for
many zones. Although winds will ease Saturday, combined seas will
be well above the 10 foot threshold for SCA through the weekend.

Locally generated wind waves, plus a building north-northwest
swell, are expected today. This swell will shift to the north and
continue to build through the weekend as the wave period
increases. This fairly long-lived large north swell will likely
generate surf heights close to 30 feet along north facing shores
Saturday and Sunday, requiring a High Surf Warning. High tide
early Saturday and Sunday could lead to some wave runup in some
coastal areas. This swell will also lead to significant harbor
surges in both Kahului and Hilo harbors, and will likely bring
Advisory-level surf to west facing shores.

Expect minimal surf along east facing shores through the day,
with some increase this weekend as the large north-northwest swell
turns to the north, allowing some swell to wrap around the
islands. Surf along south facing shores will rise slightly over
the weekend and early next week due to locally generated wind
waves. A small, long-period south swell is also expected.

&&

.HFO WATCHES/WARNINGS/ADVISORIES...
Flood Watch through Monday afternoon for Niihau-Kauai Leeward-
Kauai Mountains-Waianae Coast-Oahu North Shore-Olomana-Central
Oahu-Waianae Mountains-Lanai Mauka-Kahoolawe-Maui Windward West-
Maui Leeward West-Haleakala Summit-Kona-Kohala-Big Island
Interior-Kauai North-Kauai East-Kauai South-East Honolulu-
Honolulu Metro-Ewa Plain-Koolau Windward-Koolau Leeward-Molokai-
Lanai Windward-Lanai Leeward-Lanai South-Maui Central Valley
North-Maui Central Valley South-Windward Haleakala-Kipahulu-
South Maui/Upcountry-South Haleakala-Big Island South-Big Island
Southeast-Big Island East-Big Island North.

Wind Advisory until 6 PM HST this evening for Niihau-Kauai-

High Wind Warning from 6 PM this evening to 6 AM HST Monday for
Big Island Summits.

Blizzard Warning from 6 PM this evening to 6 AM HST Sunday for
Big Island Summits.

Wind Advisory from 6 PM this evening to 6 AM HST Monday for
Haleakala Summit.

Small Craft Advisory from 6 AM this morning to 6 PM HST Sunday
for Kauai Northwest Waters-Kauai Windward Waters-Kauai Channel-
Oahu Windward Waters-Oahu Leeward Waters-Kaiwi Channel-Maui
County Windward Waters-Pailolo Channel-Alenuihaha Channel-Big
Island Windward Waters.

Small Craft Advisory from 6 PM this evening to 6 PM HST Sunday
for Kauai Leeward Waters.

Gale Warning from 6 AM this morning to 6 PM HST this evening for
Kauai Leeward Waters.

&&

H Lau/Powell/Kinel