Alert archive / Hawaii / High Surf Advisories in 2016

High Surf Advisory 49, NWS Honolulu, HI

November 7, 2016Honolulu County, Kauai County, Kalawao County, Hawaii

NWS Honolulu, HI issued this high surf advisory at Nov 7, 2016, 3:47 AM HST for Honolulu County, Kauai County, Kalawao County, Hawaii. It was in force for 5 days.

The area

The counties it named.

The facts

Issued
Nov 7, 2016, 3:47 AM HST (13:47 UTC)
Expired
Nov 12, 2016, 3:35 PM HST
In force
5 days
Issued by
NWS Honolulu, HI

Counties Honolulu County, HI, Kalawao County, HI, Kauai County, HI

The radar

The Molokai radar (PHMO), 116 km from the middle of the area, began a volume at 13:50 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Lihue, (PHLI), launched 12:00Z, 1.8 hours before the alert went out and 127 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Lihue, at 12:00Z on 2016-11-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lihue, at 12:00Z on 2016-11-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -25 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
2 J/kg
Mixed-layer CIN
-13 J/kg
Mixed-layer LCL
847 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
-25 m²/s²
0-3 km storm-relative helicity
3 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

607 
WHHW40 PHFO 071347
CFWHFO

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE HONOLULU HI
347 AM HST MON NOV 7 2016

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

.A LARGE NORTH-NORTHWEST SWELL WILL BUILD RAPIDLY
TODAY...BRINGING WARNING LEVEL SURF TO EXPOSED NORTH AND WEST
FACING SHORES OF KAUAI COUNTY THIS MORNING...THEN OAHU AND MAUI
COUNTY THIS AFTERNOON...AND THE BIG ISLAND BY EARLY THIS EVENING.
WARNING LEVEL SURF WILL CONTINUE THROUGH TUESDAY.

HIZ001>003-006>009-012-013-017-019-020-025-080400-
/O.EXT.PHFO.SU.W.0020.161107T1347Z-161109T0400Z/
NIIHAU-KAUAI WINDWARD-KAUAI LEEWARD-WAIANAE COAST-
OAHU NORTH SHORE-OAHU KOOLAU-OLOMANA-MOLOKAI WINDWARD-
MOLOKAI LEEWARD-MAUI WINDWARD WEST-MAUI CENTRAL VALLEY-
WINDWARD HALEAKALA-BIG ISLAND NORTH AND EAST-
347 AM HST MON NOV 7 2016

...HIGH SURF WARNING NOW IN EFFECT UNTIL 6 PM HST TUESDAY...

* SURF...30 TO 40 FT ALONG NORTH AND WEST FACING SHORES OF 
  NIIHAU KAUAI AND MOLOKAI AND NORTH FACING SHORES OF OAHU AND 
  MAUI. SURF 20 TO 30 FT ALONG WEST FACING SHORES OF OAHU AND 
  NORTH FACING SHORES OF THE BIG ISLAND. 

* TIMING...SURF WILL RISE RAPIDLY THIS MORNING ACROSS KAUAI...
  REACHING OAHU AND MAUI COUNTY THIS AFTERNOON...AND THE BIG
  ISLAND BY EARLY THIS EVENING. SURF WILL REMAIN ELEVATED THROUGH
  TUESDAY.

* 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...

THESE DANGEROUS CONDITIONS MEAN THAT ONLY HIGHLY EXPERIENCED
PERSONS SHOULD ENTER THE WATER. INEXPERIENCED PERSONS SHOULD
REMAIN OFF BEACHES AND ADJACENT BEACHFRONT AREAS. LARGE BREAKING
SURF...SIGNIFICANT SHOREBREAK...AND DANGEROUS CURRENTS MAKE
ENTERING THE WATER VERY HAZARDOUS. ANYONE ENTERING THE WATER
COULD FACE SIGNIFICANT INJURY OR DEATH.

&&

$$

HIZ018-080400-
/O.NEW.PHFO.SU.Y.0049.161107T1347Z-161109T0400Z/
MAUI LEEWARD WEST-
347 AM HST MON NOV 7 2016

...HIGH SURF ADVISORY IN EFFECT UNTIL 6 PM HST TUESDAY...

THE NATIONAL WEATHER SERVICE IN HONOLULU HAS ISSUED A HIGH SURF
ADVISORY...WHICH IS IN EFFECT UNTIL 6 PM HST TUESDAY. 

* SURF...10 TO 15 FEET ALONG WEST FACING SHORES OF WEST MAUI.

* TIMING...LATE THIS AFTERNOON THROUGH TUESDAY.

* IMPACTS...MODERATE...EXPECT STRONG BREAKING WAVES AND STRONG 
  CURRENTS MAKING SWIMMING DANGEROUS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

HEED ALL ADVICE GIVEN BY OCEAN SAFETY OFFICIALS AND EXERCISE
CAUTION.

&&

$$
12 follow-up statements
489 
WHHW40 PHFO 080143
CFWHFO

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE HONOLULU HI
343 PM HST MON NOV 7 2016

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

.A LARGE NORTH-NORTHWEST SWELL WILL CONTINUE TO BUILD TONIGHT...
BRINGING WARNING LEVEL SURF TO EXPOSED NORTH AND WEST FACING
SHORES THAT WILL CONTINUE THROUGH TUESDAY. THE SWELL WILL CONTINUE
TO SUBSIDE WEDNESDAY.

HIZ001>003-006>009-012-013-017-019-020-025-081445-
/O.CON.PHFO.SU.W.0020.000000T0000Z-161109T0400Z/
NIIHAU-KAUAI WINDWARD-KAUAI LEEWARD-WAIANAE COAST-
OAHU NORTH SHORE-OAHU KOOLAU-OLOMANA-MOLOKAI WINDWARD-
MOLOKAI LEEWARD-MAUI WINDWARD WEST-MAUI CENTRAL VALLEY-
WINDWARD HALEAKALA-BIG ISLAND NORTH AND EAST-
343 PM HST MON NOV 7 2016

...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 6 PM HST TUESDAY...

* SURF...30 TO 40 FT ALONG NORTH AND WEST FACING SHORES OF
  NIIHAU...KAUAI...AND MOLOKAI...AND NORTH FACING SHORES OF OAHU
  AND MAUI. SURF OF 20 TO 30 FT ALONG WEST FACING SHORES OF OAHU
  AND NORTH FACING SHORES OF THE BIG ISLAND.

* TIMING...SURF WILL CONTINUE TO RISE OVERNIGHT...BEFORE BEGINNING
  TO SUBSIDE TUESDAY...WHILE REMAINING ABOVE WARNING LEVELS. 

* 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...

THESE DANGEROUS CONDITIONS MEAN THAT ONLY HIGHLY EXPERIENCED
PERSONS SHOULD ENTER THE WATER. INEXPERIENCED PERSONS SHOULD
REMAIN OFF BEACHES AND ADJACENT BEACHFRONT AREAS. LARGE BREAKING
SURF...SIGNIFICANT SHOREBREAK...AND DANGEROUS CURRENTS MAKE
ENTERING THE WATER VERY HAZARDOUS. ANYONE ENTERING THE WATER
COULD FACE SIGNIFICANT INJURY OR DEATH.

&&

$$

HIZ018-081445-
/O.CON.PHFO.SU.Y.0049.000000T0000Z-161109T0400Z/
MAUI LEEWARD WEST-
343 PM HST MON NOV 7 2016

...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 PM HST TUESDAY...

* SURF...10 TO 15 FEET ALONG WEST FACING SHORES OF WEST MAUI.

* TIMING...THROUGH TUESDAY.

* IMPACTS...MODERATE...EXPECT STRONG BREAKING WAVES AND STRONG 
  CURRENTS MAKING SWIMMING DANGEROUS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

HEED ALL ADVICE GIVEN BY OCEAN SAFETY OFFICIALS AND EXERCISE
CAUTION.

&&

$$
918 
WHHW40 PHFO 081356
CFWHFO

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE HONOLULU HI
356 AM HST TUE NOV 8 2016

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

.WARNING-LEVEL SURF ASSOCIATED WITH A VERY LARGE NORTH-NORTHWEST
SWELL WILL CONTINUE TO IMPACT THE EXPOSED NORTH AND WEST FACING
BEACHES THROUGH TODAY. THE SURF SHOULD DROP TO ADVISORY LEVELS BY
THIS EVENING AND HOLD THROUGH TONIGHT...THEN BELOW ADVISORY LEVELS
WEDNESDAY.

HIZ001>003-006>009-012-013-017-019-020-025-090300-
/O.CON.PHFO.SU.W.0020.000000T0000Z-161109T0400Z/
NIIHAU-KAUAI WINDWARD-KAUAI LEEWARD-WAIANAE COAST-
OAHU NORTH SHORE-OAHU KOOLAU-OLOMANA-MOLOKAI WINDWARD-
MOLOKAI LEEWARD-MAUI WINDWARD WEST-MAUI CENTRAL VALLEY-
WINDWARD HALEAKALA-BIG ISLAND NORTH AND EAST-
356 AM HST TUE NOV 8 2016

...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 6 PM HST THIS
EVENING...

* SURF...25 TO 35 FT...ALONG NORTH AND WEST FACING SHORES OF
  NIIHAU...KAUAI...AND MOLOKAI...AND NORTH FACING SHORES OF OAHU
  AND MAUI EARLY...LOWERING TO 18 TO 25 FT IN THE AFTERNOON. SURF
  18 TO 25 FT ALONG WEST FACING SHORES OF OAHU AND NORTH FACING
  SHORES OF THE BIG ISLAND...LOWERING TO 15 TO 20 FT IN THE
  AFTERNOON ON OAHU.

* TIMING...SURF WILL GRADUALLY SUBSIDE THROUGH THE DAY FROM WEST
  TO EAST...WHILE REMAINING ABOVE WARNING LEVELS. SURF WILL DROP
  TO ADVISORY LEVELS TONIGHT ALONG THE EXPOSED SHORES AND LIKELY
  BELOW ADVISORY-LEVELS WEDNESDAY.

* 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...

THESE DANGEROUS CONDITIONS MEAN THAT ONLY HIGHLY EXPERIENCED
PERSONS SHOULD ENTER THE WATER. INEXPERIENCED PERSONS SHOULD
REMAIN OFF BEACHES AND ADJACENT BEACHFRONT AREAS. LARGE BREAKING
SURF...SIGNIFICANT SHOREBREAK...AND DANGEROUS CURRENTS MAKE
ENTERING THE WATER VERY HAZARDOUS. ANYONE ENTERING THE WATER
COULD FACE SIGNIFICANT INJURY OR DEATH.

&&

$$

HIZ018-090300-
/O.CON.PHFO.SU.Y.0049.000000T0000Z-161109T0400Z/
MAUI LEEWARD WEST-
356 AM HST TUE NOV 8 2016

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

* SURF...10 TO 15 FEET ALONG WEST FACING SHORES OF WEST MAUI.

* TIMING...THROUGH TODAY.

* IMPACTS...MODERATE...EXPECT STRONG BREAKING WAVES AND STRONG 
  CURRENTS MAKING SWIMMING DANGEROUS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

HEED ALL ADVICE GIVEN BY OCEAN SAFETY OFFICIALS AND EXERCISE
CAUTION.

&&

$$

GIBBS
060 
WHHW40 PHFO 081507 AAA
CFWHFO

COASTAL HAZARD MESSAGE...UPDATED
NATIONAL WEATHER SERVICE HONOLULU HI
507 AM HST TUE NOV 8 2016

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

.WARNING-LEVEL SURF ASSOCIATED WITH A VERY LARGE NORTH-NORTHWEST
SWELL WILL CONTINUE TO IMPACT THE EXPOSED NORTH AND WEST FACING
BEACHES THROUGH TODAY. THE SURF SHOULD DROP TO ADVISORY LEVELS BY
THIS EVENING AND HOLD THROUGH TONIGHT...THEN BELOW ADVISORY
LEVELS WEDNESDAY.

HIZ001>003-006>009-012-013-017-019-020-025-090400-
/O.CON.PHFO.SU.W.0020.000000T0000Z-161109T0400Z/
NIIHAU-KAUAI WINDWARD-KAUAI LEEWARD-WAIANAE COAST-
OAHU NORTH SHORE-OAHU KOOLAU-OLOMANA-MOLOKAI WINDWARD-
MOLOKAI LEEWARD-MAUI WINDWARD WEST-MAUI CENTRAL VALLEY-
WINDWARD HALEAKALA-BIG ISLAND NORTH AND EAST-
507 AM HST TUE NOV 8 2016

...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 6 PM HST THIS
EVENING...

* SURF...25 TO 35 FT...ALONG NORTH AND WEST FACING SHORES OF
  NIIHAU...KAUAI...AND MOLOKAI...AND NORTH FACING SHORES OF
  OAHU...MAUI AND THE BIG ISLAND EARLY...LOWERING TO 18 TO 25 FT
  IN THE AFTERNOON. SURF 18 TO 25 FT ALONG WEST FACING SHORES OF
  OAHU...LOWERING TO 15 TO 20 FT IN THE AFTERNOON.

* TIMING...SURF WILL GRADUALLY SUBSIDE THROUGH THE DAY FROM WEST 
  TO EAST...WHILE REMAINING ABOVE WARNING LEVELS. SURF WILL DROP 
  TO ADVISORY LEVELS TONIGHT ALONG THE EXPOSED SHORES AND LIKELY 
  BELOW ADVISORY-LEVELS WEDNESDAY. 

* 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...

THESE DANGEROUS CONDITIONS MEAN THAT ONLY HIGHLY EXPERIENCED
PERSONS SHOULD ENTER THE WATER. INEXPERIENCED PERSONS SHOULD
REMAIN OFF BEACHES AND ADJACENT BEACHFRONT AREAS. LARGE BREAKING
SURF...SIGNIFICANT SHOREBREAK...AND DANGEROUS CURRENTS MAKE
ENTERING THE WATER VERY HAZARDOUS. ANYONE ENTERING THE WATER
COULD FACE SIGNIFICANT INJURY OR DEATH.

&&

$$

HIZ018-090400-
/O.CON.PHFO.SU.Y.0049.000000T0000Z-161109T0400Z/
MAUI LEEWARD WEST-
507 AM HST TUE NOV 8 2016

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

* SURF...10 TO 15 FEET ALONG WEST FACING SHORES OF WEST MAUI.

* TIMING...THROUGH TODAY.

* IMPACTS...MODERATE...EXPECT STRONG BREAKING WAVES AND STRONG 
  CURRENTS MAKING SWIMMING DANGEROUS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

HEED ALL ADVICE GIVEN BY OCEAN SAFETY OFFICIALS AND EXERCISE
CAUTION.

&&

$$
280 
WHHW40 PHFO 090141
CFWHFO

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE HONOLULU HI
341 PM HST TUE NOV 8 2016

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

.WARNING-LEVEL SURF ASSOCIATED WITH A VERY LARGE NORTH-NORTHWEST
SWELL WILL CONTINUE TO SUBSIDE OVERNIGHT. THE SURF SHOULD DROP BELOW
ADVISORY LEVELS WEDNESDAY.

HIZ003-006-091445-
/O.CAN.PHFO.SU.W.0020.000000T0000Z-161109T0400Z/
/O.EXB.PHFO.SU.Y.0049.000000T0000Z-161109T1600Z/
KAUAI LEEWARD-WAIANAE COAST-
341 PM HST TUE NOV 8 2016

...HIGH SURF ADVISORY IN EFFECT UNTIL 6 AM HST WEDNESDAY FOR WEST
FACING SHORES OF KAUAI AND OAHU... 
...HIGH SURF WARNING IS CANCELLED FOR WEST FACING SHORES OF KAUAI
AND OAHU...

THE NATIONAL WEATHER SERVICE IN HONOLULU HAS ISSUED A HIGH SURF
ADVISORY...WHICH IS IN EFFECT UNTIL 6 AM HST WEDNESDAY. THE HIGH
SURF WARNING HAS BEEN CANCELLED. 

* SURF...10 TO 15 FEET ALONG WEST FACING SHORES OF KAUAI AND OAHU.

* TIMING...THROUGH 6 AM WEDNESDAY.

* IMPACTS...MODERATE...EXPECT STRONG BREAKING WAVES AND STRONG 
  CURRENTS MAKING SWIMMING DANGEROUS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

HEED ALL ADVICE GIVEN BY OCEAN SAFETY OFFICIALS AND EXERCISE
CAUTION.

&&

$$

HIZ001-002-007>009-012-013-017-019-020-025-091445-
/O.EXT.PHFO.SU.W.0020.000000T0000Z-161109T1600Z/
NIIHAU-KAUAI WINDWARD-OAHU NORTH SHORE-OAHU KOOLAU-OLOMANA-
MOLOKAI WINDWARD-MOLOKAI LEEWARD-MAUI WINDWARD WEST-
MAUI CENTRAL VALLEY-WINDWARD HALEAKALA-BIG ISLAND NORTH AND EAST-
341 PM HST TUE NOV 8 2016

...HIGH SURF WARNING NOW IN EFFECT UNTIL 6 AM HST WEDNESDAY FOR
NORTH FACING SHORES...

* SURF...18 TO 25 FT...ALONG NORTH FACING SHORES OF
  NIIHAU...KAUAI...OAHU...MOLOKAI...MAUI AND THE BIG ISLAND. 

* TIMING...SURF WILL GRADUALLY SUBSIDE OVERNIGHT...LIKELY DROPPING
  BELOW ADVISORY LEVELS WEDNESDAY.

* 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...

THESE DANGEROUS CONDITIONS MEAN THAT ONLY HIGHLY EXPERIENCED
PERSONS SHOULD ENTER THE WATER. INEXPERIENCED PERSONS SHOULD
REMAIN OFF BEACHES AND ADJACENT BEACHFRONT AREAS. LARGE BREAKING
SURF...SIGNIFICANT SHOREBREAK...AND DANGEROUS CURRENTS MAKE
ENTERING THE WATER VERY HAZARDOUS. ANYONE ENTERING THE WATER
COULD FACE SIGNIFICANT INJURY OR DEATH.

&&

$$

HIZ018-091445-
/O.EXT.PHFO.SU.Y.0049.000000T0000Z-161109T1600Z/
MAUI LEEWARD WEST-
341 PM HST TUE NOV 8 2016

...HIGH SURF ADVISORY NOW IN EFFECT UNTIL 6 AM HST WEDNESDAY...

* SURF...10 TO 15 FEET ALONG WEST FACING SHORES OF WEST MAUI.

* TIMING...THROUGH 6 AM WEDNESDAY.

* IMPACTS...MODERATE...EXPECT STRONG BREAKING WAVES AND STRONG 
  CURRENTS MAKING SWIMMING DANGEROUS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

HEED ALL ADVICE GIVEN BY OCEAN SAFETY OFFICIALS AND EXERCISE
CAUTION.

&&

$$
706 
WHHW40 PHFO 091331
CFWHFO

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE HONOLULU HI
331 AM HST WED NOV 9 2016

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

.A NORTH-NORTHWEST SWELL WILL CONTINUE TO PRODUCE ELEVATED SURF
ALONG MOST NORTH AND SOME WEST FACING SHORES TODAY.

HIZ001-002-007>009-012-013-017-019-020-025-100245-
/O.CAN.PHFO.SU.W.0020.000000T0000Z-161109T1600Z/
/O.EXB.PHFO.SU.Y.0049.000000T0000Z-161110T0400Z/
NIIHAU-KAUAI WINDWARD-OAHU NORTH SHORE-OAHU KOOLAU-OLOMANA-
MOLOKAI WINDWARD-MOLOKAI LEEWARD-MAUI WINDWARD WEST-
MAUI CENTRAL VALLEY-WINDWARD HALEAKALA-BIG ISLAND NORTH AND EAST-
331 AM HST WED NOV 9 2016

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

THE NATIONAL WEATHER SERVICE IN HONOLULU HAS ISSUED A HIGH SURF
ADVISORY...WHICH IS IN EFFECT UNTIL 6 PM HST THIS EVENING. 

* SURF...14 TO 18 FEET ALONG NORTH FACING SHORES OF NIIHAU...
  KAUAI...OAHU...MOLOKAI...MAUI AND THE BIG ISLAND.

* TIMING...THROUGH THIS AFTERNOON.

* IMPACTS...MODERATE...EXPECT STRONG BREAKING WAVES AND STRONG 
  CURRENTS MAKING SWIMMING DIFFICULT AND DANGEROUS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

HEED ALL ADVICE GIVEN BY OCEAN SAFETY OFFICIALS AND EXERCISE
CAUTION.

&&

$$

HIZ018-091445-
/O.CAN.PHFO.SU.Y.0049.000000T0000Z-161109T1600Z/
MAUI LEEWARD WEST-
331 AM HST WED NOV 9 2016

...HIGH SURF ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN HONOLULU HAS CANCELLED THE HIGH
SURF ADVISORY. 

SURF HEIGHTS HAS DROPPED OVERNIGHT...AND THE HIGH SURF ADVISORY
IS CANCELLED FOR WEST FACING SHORES OF MAUI.

$$

HIZ003-006-100245-
/O.EXT.PHFO.SU.Y.0049.000000T0000Z-161110T0400Z/
KAUAI LEEWARD-WAIANAE COAST-
331 AM HST WED NOV 9 2016

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

* SURF...8 TO 12 FEET ALONG WEST FACING SHORES OF KAUAI AND OAHU.

* TIMING...THROUGH THIS AFTERNOON.

* IMPACTS...MODERATE...EXPECT STRONG BREAKING WAVES AND STRONG 
  CURRENTS MAKING SWIMMING DIFFICULT AND DANGEROUS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

HEED ALL ADVICE GIVEN BY OCEAN SAFETY OFFICIALS AND EXERCISE
CAUTION.

&&

$$

HOUSTON
996 
WHHW40 PHFO 100131
CFWHFO

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE HONOLULU HI
331 PM HST WED NOV 9 2016

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

.A DECLINING NORTH-NORTHWEST SWELL WILL CONTINUE TO PRODUCE
ELEVATED SURF ALONG NORTH FACING SHORES TONIGHT. ALTHOUGH SURF
WILL DROP BELOW ADVISORY THE LEVEL LATE TONIGHT AND EARLY
THURSDAY...ANOTHER LARGE NORTH-NORTHWEST SWELL WILL BUILD THURSDAY
AFTERNOON. SURF ALONG MOST NORTH AND SOME WEST FACING SHORES WILL
LIKELY REACH HIGH SURF WARNING LEVELS THURSDAY NIGHT AND FRIDAY.

HIZ006-100245-
/O.CAN.PHFO.SU.Y.0049.000000T0000Z-161110T0400Z/
WAIANAE COAST-
331 PM HST WED NOV 9 2016

...HIGH SURF ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN HONOLULU HAS CANCELLED THE HIGH
SURF ADVISORY. 

SURF HAS DROPPED BELOW THE ADVISORY LEVEL.

$$

HIZ001>003-007>009-012-013-017-019-020-025-101445-
/O.EXT.PHFO.SU.Y.0049.000000T0000Z-161110T1600Z/
NIIHAU-KAUAI WINDWARD-KAUAI LEEWARD-OAHU NORTH SHORE-OAHU KOOLAU-
OLOMANA-MOLOKAI WINDWARD-MOLOKAI LEEWARD-MAUI WINDWARD WEST-
MAUI CENTRAL VALLEY-WINDWARD HALEAKALA-BIG ISLAND NORTH AND EAST-
331 PM HST WED NOV 9 2016

...HIGH SURF ADVISORY NOW IN EFFECT UNTIL 6 AM HST THURSDAY...

* SURF...10 TO 15 FEET ALONG NORTH FACING SHORES OF NIIHAU... 
  KAUAI...OAHU...MOLOKAI...MAUI AND THE BIG ISLAND. 

* TIMING...THROUGH TONIGHT. ANOTHER LARGE NORTH-NORTHWEST SWELL
  WILL BUILD THURSDAY AFTERNOON...AND SURF ALONG MOST NORTH AND
  SOME WEST FACING SHORES WILL LIKELY REACH HIGH SURF WARNING
  LEVELS THURSDAY NIGHT AND FRIDAY.

* IMPACTS...MODERATE...EXPECT STRONG BREAKING WAVES AND STRONG 
  CURRENTS MAKING SWIMMING DIFFICULT AND DANGEROUS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

HEED ALL ADVICE GIVEN BY OCEAN SAFETY OFFICIALS AND EXERCISE
CAUTION.

&&

$$
WROE
597 
WHHW40 PHFO 101332
CFWHFO

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE HONOLULU HI
332 AM HST THU NOV 10 2016

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

.A LARGE NORTH-NORTHWEST SWELL WILL BUILD FROM THIS AFTERNOON
THROUGH THIS EVENING. SURF ALONG MOST NORTH AND SOME WEST FACING
SHORES WILL LIKELY REACH THE HIGH SURF WARNING CRITERIA FROM
LATER TODAY AND TONIGHT INTO FRIDAY. WEST FACING SHORES OF OAHU
AND NORTH FACING SHORES OF THE BIG ISLAND WILL ALSO HAVE ELEVATED
SURF FROM LATER TODAY INTO FRIDAY.

HIZ001>003-007>009-012-013-017-019-020-110245-
/O.UPG.PHFO.SU.Y.0049.000000T0000Z-161110T1600Z/
/O.NEW.PHFO.SU.W.0021.161110T1332Z-161111T1600Z/
NIIHAU-KAUAI WINDWARD-KAUAI LEEWARD-OAHU NORTH SHORE-OAHU KOOLAU-
OLOMANA-MOLOKAI WINDWARD-MOLOKAI LEEWARD-MAUI WINDWARD WEST-
MAUI CENTRAL VALLEY-WINDWARD HALEAKALA-
332 AM HST THU NOV 10 2016

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

THE NATIONAL WEATHER SERVICE IN HONOLULU HAS ISSUED A HIGH SURF
WARNING...WHICH IS IN EFFECT UNTIL 6 AM HST FRIDAY. 

* SURF...RISING TO 20 TO 25 FEET ALONG NORTH AND WEST FACING
  SHORES OF NIIHAU...KAUAI AND MOLOKAI...AND NORTH FACING SHORES
  OF OAHU AND MAUI.

* TIMING...FROM THIS AFTERNOON THROUGH TONIGHT. SURF IS EXPECTED
  TO REMAIN NEAR THE HIGH SURF WARNING CRITERIA ON FRIDAY.

* 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. HEED ALL ADVICE
GIVEN BY OCEAN SAFETY OFFICIALS.

&&

$$

HIZ006-110245-
/O.EXB.PHFO.SU.Y.0049.000000T0000Z-161111T1600Z/
WAIANAE COAST-
332 AM HST THU NOV 10 2016

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

THE NATIONAL WEATHER SERVICE IN HONOLULU HAS ISSUED A HIGH SURF
ADVISORY...WHICH IS IN EFFECT UNTIL 6 AM HST FRIDAY. 

* SURF...RISING TO 12 TO 16 FEET ALONG WEST FACING SHORES OF
  OAHU.

* TIMING...FROM THIS AFTERNOON THROUGH TONIGHT. SURF IS EXPECTED
  TO REMAIN NEAR THE HIGH SURF ADVISORY CRITERIA ON FRIDAY.

* IMPACTS...MODERATE...EXPECT STRONG BREAKING WAVES AND STRONG 
  CURRENTS MAKING SWIMMING DIFFICULT AND DANGEROUS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

HEED ALL ADVICE GIVEN BY OCEAN SAFETY OFFICIALS AND EXERCISE
CAUTION.

&&

$$

HIZ025-110245-
/O.EXT.PHFO.SU.Y.0049.000000T0000Z-161111T1600Z/
BIG ISLAND NORTH AND EAST-
332 AM HST THU NOV 10 2016

...HIGH SURF ADVISORY NOW IN EFFECT UNTIL 6 AM HST FRIDAY...

* SURF...RISING TO 14 TO 18 FEET ALONG NORTH FACING SHORES OF THE
  BIG ISLAND.

* TIMING...FROM LATER TODAY THROUGH TONIGHT. SURF IS EXPECTED
  TO REMAIN NEAR THE HIGH SURF ADVISORY CRITERIA ON FRIDAY.

* IMPACTS...MODERATE...EXPECT STRONG BREAKING WAVES AND STRONG 
  CURRENTS MAKING SWIMMING DIFFICULT AND DANGEROUS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

HEED ALL ADVICE GIVEN BY OCEAN SAFETY OFFICIALS AND EXERCISE
CAUTION.

&&

$$

HOUSTON
190 
WHHW40 PHFO 110139
CFWHFO

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE HONOLULU HI
339 PM HST THU NOV 10 2016

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

.A LARGE NORTH-NORTHWEST SWELL WILL BUILD TONIGHT...BRINGING
DANGEROUS SURF TO EXPOSED AREAS. THE SURF WILL REMAIN ELEVATED
THROUGH FRIDAY BEFORE SLOWLY DECLINING FRIDAY NIGHT AND SATURDAY.

HIZ001>003-007>009-012-013-017-019-020-111445-
/O.EXT.PHFO.SU.W.0021.000000T0000Z-161112T0400Z/
NIIHAU-KAUAI WINDWARD-KAUAI LEEWARD-OAHU NORTH SHORE-OAHU KOOLAU-
OLOMANA-MOLOKAI WINDWARD-MOLOKAI LEEWARD-MAUI WINDWARD WEST-
MAUI CENTRAL VALLEY-WINDWARD HALEAKALA-
339 PM HST THU NOV 10 2016

...HIGH SURF WARNING NOW IN EFFECT UNTIL 6 PM HST FRIDAY...

* SURF...20 TO 25 FEET ALONG NORTH AND WEST FACING SHORES OF
  NIIHAU...KAUAI AND MOLOKAI...AND NORTH FACING SHORES OF OAHU AND
  MAUI.

* TIMING...THROUGH FRIDAY.

* 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. HEED ALL ADVICE
GIVEN BY OCEAN SAFETY OFFICIALS.

&&

$$

HIZ006-025-111445-
/O.EXT.PHFO.SU.Y.0049.000000T0000Z-161112T0400Z/
WAIANAE COAST-BIG ISLAND NORTH AND EAST-
339 PM HST THU NOV 10 2016

...HIGH SURF ADVISORY NOW IN EFFECT UNTIL 6 PM HST FRIDAY...

* SURF...12 TO 16 FEET ALONG WEST FACING SHORES OF OAHU. SURF 15
  TO 20 FEET FOR NORTH FACING SHORES OF THE BIG ISLAND.

* TIMING...THROUGH FRIDAY.

* IMPACTS...MODERATE...EXPECT STRONG BREAKING WAVES AND STRONG 
  CURRENTS MAKING SWIMMING DIFFICULT AND DANGEROUS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

HEED ALL ADVICE GIVEN BY OCEAN SAFETY OFFICIALS AND EXERCISE
CAUTION.

&&

$$

MORRISON
306 
WHHW40 PHFO 111359
CFWHFO

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE HONOLULU HI
359 AM HST FRI NOV 11 2016

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

...HIGH SURF ADVISORY FOR WEST FACING SHORES OF OAHU AND NORTH
FACING SHORES OF THE BIG ISLAND...

.DANGEROUS SURF WILL CONTINUE ALONG THE EXPOSED NORTH AND WEST
FACING SHORES TODAY BEFORE GRADUALLY TRENDING DOWN INTO THE
WEEKEND.

HIZ001>003-007>009-012-013-017-019-020-120300-
/O.CON.PHFO.SU.W.0021.000000T0000Z-161112T0400Z/
NIIHAU-KAUAI WINDWARD-KAUAI LEEWARD-OAHU NORTH SHORE-OAHU KOOLAU-
OLOMANA-MOLOKAI WINDWARD-MOLOKAI LEEWARD-MAUI WINDWARD WEST-
MAUI CENTRAL VALLEY-WINDWARD HALEAKALA-
359 AM HST FRI NOV 11 2016

...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 6 PM HST THIS
EVENING...

* SURF...22 TO 28 FEET ALONG NORTH AND WEST FACING SHORES OF
  NIIHAU...KAUAI AND MOLOKAI...AND NORTH FACING SHORES OF OAHU AND
  MAUI EARLY...LOWERING TO 18 TO 25 FEET THIS AFTERNOON.

* TIMING...THROUGH THIS EVENING.

* 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. HEED ALL ADVICE
GIVEN BY OCEAN SAFETY OFFICIALS.

&&

$$

HIZ006-025-120300-
/O.CON.PHFO.SU.Y.0049.000000T0000Z-161112T0400Z/
WAIANAE COAST-BIG ISLAND NORTH AND EAST-
359 AM HST FRI NOV 11 2016

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

* SURF...12 TO 18 FEET ALONG WEST FACING SHORES OF OAHU...LOWERING
  TO 10 TO 15 FEET THIS AFTERNOON. SURF 15 TO 20 FEET FOR NORTH
  FACING SHORES OF THE BIG ISLAND.

* TIMING...THROUGH THIS EVENING.

* IMPACTS...MODERATE...EXPECT STRONG BREAKING WAVES AND STRONG 
  CURRENTS MAKING SWIMMING DIFFICULT AND DANGEROUS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

HEED ALL ADVICE GIVEN BY OCEAN SAFETY OFFICIALS AND EXERCISE
CAUTION.

&&

$$

GIBBS
589 
WHHW40 PHFO 120122
CFWHFO

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE HONOLULU HI
322 PM HST FRI NOV 11 2016

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

...HIGH SURF ADVISORY FOR WEST FACING SHORES OF OAHU AND NORTH
FACING SHORES OF THE BIG ISLAND...

.DANGEROUS SURF WILL CONTINUE ALONG THE EXPOSED NORTH AND WEST
FACING SHORES THROUGH TONIGHT BEFORE GRADUALLY TRENDING DOWN INTO
THE WEEKEND.

HIZ001>003-007>009-012-013-017-019-020-121430-
/O.EXT.PHFO.SU.W.0021.000000T0000Z-161112T1600Z/
NIIHAU-KAUAI WINDWARD-KAUAI LEEWARD-OAHU NORTH SHORE-OAHU KOOLAU-
OLOMANA-MOLOKAI WINDWARD-MOLOKAI LEEWARD-MAUI WINDWARD WEST-
MAUI CENTRAL VALLEY-WINDWARD HALEAKALA-
322 PM HST FRI NOV 11 2016

...HIGH SURF WARNING NOW IN EFFECT UNTIL 6 AM HST SATURDAY...

* SURF...20 TO 25 FEET ALONG NORTH AND WEST FACING SHORES OF
  NIIHAU...KAUAI AND MOLOKAI...AND NORTH FACING SHORES OF OAHU AND
  MAUI.

* TIMING...THROUGH TONIGHT.

* 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. HEED ALL ADVICE
GIVEN BY OCEAN SAFETY OFFICIALS.

&&

$$

HIZ006-025-121430-
/O.EXT.PHFO.SU.Y.0049.000000T0000Z-161112T1600Z/
WAIANAE COAST-BIG ISLAND NORTH AND EAST-
322 PM HST FRI NOV 11 2016

...HIGH SURF ADVISORY NOW IN EFFECT UNTIL 6 AM HST SATURDAY...

* SURF...10 TO 15 FEET ALONG WEST FACING SHORES OF OAHU. 15 TO 20
  FEET FOR NORTH FACING SHORES OF THE BIG ISLAND.

* TIMING...THROUGH TONIGHT.

* IMPACTS...MODERATE...EXPECT STRONG BREAKING WAVES AND STRONG 
  CURRENTS MAKING SWIMMING DIFFICULT AND DANGEROUS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

HEED ALL ADVICE GIVEN BY OCEAN SAFETY OFFICIALS AND EXERCISE
CAUTION.

&&

$$
BRENCHLEY
043 
WHHW40 PHFO 121350
CFWHFO

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE HONOLULU HI
350 AM HST SAT NOV 12 2016

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

.DANGEROUS SURF WILL CONTINUE ALONG THE EXPOSED NORTH AND WEST
FACING SHORES TODAY. SURF SHOULD DROP BELOW ADVISORY LEVELS
TONIGHT THROUGH EARLY SUNDAY.

HIZ001>003-007>009-012-013-017-019-020-130300-
/O.CAN.PHFO.SU.W.0021.000000T0000Z-161112T1600Z/
/O.EXB.PHFO.SU.Y.0049.000000T0000Z-161113T0400Z/
NIIHAU-KAUAI WINDWARD-KAUAI LEEWARD-OAHU NORTH SHORE-OAHU KOOLAU-
OLOMANA-MOLOKAI WINDWARD-MOLOKAI LEEWARD-MAUI WINDWARD WEST-
MAUI CENTRAL VALLEY-WINDWARD HALEAKALA-
350 AM HST SAT NOV 12 2016

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

THE NATIONAL WEATHER SERVICE IN HONOLULU HAS ISSUED A HIGH SURF
ADVISORY...WHICH IS IN EFFECT UNTIL 6 PM HST THIS EVENING. THE
HIGH SURF WARNING HAS BEEN CANCELLED. 

* SURF...12 TO 16 FEET ALONG NORTH AND WEST FACING SHORES OF
  NIIHAU...KAUAI AND MOLOKAI...AND NORTH FACING SHORES OF OAHU
  AND MAUI.

* TIMING...THROUGH THIS EVENING.

* IMPACTS...MODERATE...EXPECT STRONG BREAKING WAVES AND STRONG 
  CURRENTS MAKING SWIMMING DIFFICULT AND DANGEROUS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

HEED ALL ADVICE GIVEN BY OCEAN SAFETY OFFICIALS AND EXERCISE
CAUTION.

&&

$$

HIZ006-121500-
/O.CAN.PHFO.SU.Y.0049.000000T0000Z-161112T1600Z/
WAIANAE COAST-
350 AM HST SAT NOV 12 2016

...HIGH SURF ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN HONOLULU HAS CANCELLED THE HIGH
SURF ADVISORY FOR THE WEST FACING SHORES OF OAHU.

$$

HIZ025-130300-
/O.EXT.PHFO.SU.Y.0049.000000T0000Z-161113T0400Z/
BIG ISLAND NORTH AND EAST-
350 AM HST SAT NOV 12 2016

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

* SURF...15 TO 20 FEET FOR NORTH FACING SHORES OF THE BIG ISLAND
  EARLY...LOWERING TO 10 TO 15 FEET THIS AFTERNOON.

* TIMING...THROUGH THIS EVENING.

* IMPACTS...MODERATE...EXPECT STRONG BREAKING WAVES AND STRONG
  CURRENTS MAKING SWIMMING DIFFICULT AND DANGEROUS. SOME OVERWASH
  ONTO VULNERABLE SECTIONS OF THE COAST AND ROADWAYS IS POSSIBLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

HEED ALL ADVICE GIVEN BY OCEAN SAFETY OFFICIALS AND EXERCISE
CAUTION.

&&

$$

GIBBS
883 
WHHW40 PHFO 130135
CFWHFO

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE HONOLULU HI
335 PM HST SAT NOV 12 2016


HIZ001>003-007>009-012-013-017-019-020-025-130245-
/O.CAN.PHFO.SU.Y.0049.000000T0000Z-161113T0400Z/
NIIHAU-KAUAI WINDWARD-KAUAI LEEWARD-OAHU NORTH SHORE-OAHU KOOLAU-
OLOMANA-MOLOKAI WINDWARD-MOLOKAI LEEWARD-MAUI WINDWARD WEST-
MAUI CENTRAL VALLEY-WINDWARD HALEAKALA-BIG ISLAND NORTH AND EAST-
335 PM HST SAT NOV 12 2016

...HIGH SURF ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN HONOLULU HAS CANCELLED THE HIGH
SURF ADVISORY. 

BUOY AND SHORE OBSERVATIONS SHOW THAT SURF HEIGHTS HAVE DECREASED
BELOW ADVISORY CRITERIA. THE HIGH SURF ADVISORY IS THEREFORE
CANCELLED.

$$

What forecasters said that day

The local office's own words before this high surf 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 high surf advisory went out at Nov 6, 8:29 PM HST, 7 hours 18 minutes earlier.

Area forecast discussion, Nov 6, 8:29 PM HST, 7 hours 18 minutes before
Area Forecast Discussion
National Weather Service Honolulu HI
829 PM HST Sun Nov 6 2016

.SYNOPSIS...
A remnant front will bring a band of clouds and showers across
the smaller islands on Monday before dissipating near the Big
Island on Tuesday. A weak wind regime will then set up over the
state by Wednesday and linger into next weekend, featuring daytime
sea breezes and overnight land breezes in most areas.

&&

.DISCUSSION...
Currently at the surface, a weakening frontal boundary is located
around 200 miles north of Kauai this evening, and is pushing
southward at around 15 to 20 mph toward the island chain. Infrared
satellite imagery shows partly cloudy skies over the eastern
islands, with some jet stream cirrus enhancing cloud cover over
the western half of the state. Meanwhile, radar imagery shows very
little in the way of shower activity, with nothing more than very
light showers or sprinkles affecting windward and mauka areas.
Main short term concern for the next couple of days revolves
around rain chances associated with the remnant front moving
southward into the islands.

Tonight and Monday,
The band of clouds and showers associated with the weakening
front will push steadily southward overnight, reaching Kauai
after midnight. The band is expected to reach Oahu Monday
morning, and shift southward into Maui County Monday afternoon.
MIMIC total precipitable water imagery shows values between 1.3
and 1.6 inches associated with the frontal remnants and this
increase in moisture will lead to an enhancement in shower
activity across the island chain as it moves through. As for
forecast details, we should see showers pick up in coverage and
intensity over Kauai after midnight, while showers remain very
light and limited to primarily windward and mauka areas of the
other islands through the overnight hours. Showers are then
expected to increase in coverage over Oahu Monday morning and
spread southward into Maui County Monday afternoon. Across the Big
Island, shower activity is expected to remain sparse through the
period.

Monday night and Tuesday night,
The remnant front will shift southward into the Big Island Monday
night then stall out and slowly dissipate on Tuesday. The enhanced
moisture associated with the remnant front is expected to shift
south of Kauai and Oahu Monday evening, resulting in a decrease in
shower activity here. Across Maui County, shower activity is
expected to continue Monday night, with improving conditions then
expected through the day on Tuesday. Across the Big Island, shower
coverage is expected to increase over windward areas Monday night
and continue through the day on Tuesday. Improving conditions are
then expected in all areas Tuesday night as the moisture band
slowly dissipates over the eastern end of the state and winds
become light and variable.

Wednesday through next Sunday,
A weak ridge of high pressure will set up near or just north of
the island chain from mid week through next weekend, keeping a
light wind regime in place. Daytime sea breezes and overnight land
breezes are expected in most areas, with showers limited to mainly
windward areas during the overnight hours and to the interior of
the islands during the afternoon and evening hours.

&&

.AVIATION...
A surface ridge just north of the area will move south and dissipate
ahead of front 100NM N of Kauai. VFR will prevail tonight. No
AIRMETs are in effect, and none are expected through late tonight.

The front will reach Kauai Monday morning, and move to the Big
Island by Monday night producing MVFR ceilings and visibility over
windward areas. AIRMET SIERRA will likely be needed for MTN OBSC.
Strong N to NE winds will accompany the front and AIRMET TANGO
may be needed for moderate turbulence downwind of the mountains.

&&

.MARINE...
A very large NNW swell arriving Monday will bring warning level
surf to the north and west facing shores of most islands Monday
and Tuesday. Dangerous and life-threatening surf conditions are
expected. The NNW swell will also impact harbors exposed to
northwest and north swells with the potential for moderate harbor
surges and large breaking waves at harbor entrances. This swell
will gradually subside from late Tuesday into Wednesday before a
second large NNW swell arrives on Thursday and continues into
Friday.

There are no Small Craft Advisories (SCA) expected tonight. A SCA
has been issued for all waters starting at 6 am Monday as seas
increase due to the NNW swell...and north to northeast winds
strengthen due to a south-moving dissipating front.

&&

.HFO WATCHES/WARNINGS/ADVISORIES...
High Surf Warning from 6 AM Monday to 6 PM HST Tuesday for
Niihau-Kauai Windward-Kauai Leeward-Waianae Coast-Oahu North
Shore-Oahu Koolau-Olomana-Molokai-Maui Windward West-Maui
Central Valley-Windward Haleakala-Big Island North and East.

Small Craft Advisory from 6 AM Monday to 6 PM HST Tuesday for
all Hawaiian waters-

&&

DISCUSSION/MARINE...Jelsema
AVIATION...Donaldson

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 6, 3:25 PM HSTHigh Surf WarningHFOHonolulu, Kauai, Kalawao60 hr
Nov 6, 3:27 PM HSTSmall Craft AdvisoryHFO72 hr

Nearby

High Surf Advisories in Hawaii, 2016Every high surf advisory in 2016

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.