High Wind Watch 2, NWS Honolulu, HI

857 
WWHW70 PHFO 301333
NPWHFO

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE HONOLULU HI
333 AM HST TUE DEC 30 2014

...HIGH WIND WARNING FOR THE BIG ISLAND SUMMITS OF MAUNA KEA AND
MAUNA LOA...

...WIND ADVISORY FOR THE SUMMIT OF HALEAKALA ON MAUI...

.WINDS ACROSS THE HIGH SUMMITS ABOVE 9000 FT WILL STEADILY
INCREASE TODAY AS A MID TO UPPER LEVEL TROUGH MOVES OVERHEAD.
WINDS WILL DECREASE LATE TUESDAY NIGHT AND WEDNESDAY MORNING BUT
WILL LIKELY REMAIN ELEVATED ON THE BIG ISLAND SUMMITS FOR A COUPLE
OF DAYS...FOLLOWED BY ANOTHER ROUND OF POTENTIALLY VERY STRONG
WINDS BEGINNING THURSDAY NIGHT.

HIZ028-310245-
/O.UPG.PHFO.HW.A.0002.141230T1600Z-141231T1600Z/
/O.NEW.PHFO.HW.W.0016.141230T1600Z-141231T1600Z/
BIG ISLAND SUMMITS-
333 AM HST TUE DEC 30 2014

...HIGH WIND WARNING IN EFFECT FROM 6 AM THIS MORNING TO 6 AM HST
WEDNESDAY...

THE NATIONAL WEATHER SERVICE IN HONOLULU HAS ISSUED A HIGH WIND
WARNING...WHICH IS IN EFFECT FROM 6 AM THIS MORNING TO 6 AM HST
WEDNESDAY. THE HIGH WIND WATCH IS NO LONGER IN EFFECT. 

* WINDS...WEST 45 TO 70 MPH WITH LOCALIZED GUSTS OVER 90 MPH ABOVE
  9000 FEET.

* TIMING...INCREASING TODAY AND PEAKING IN THE EVENING. WINDS WILL
  DECREASE ON WEDNESDAY BUT WILL REMAIN ELEVATED THROUGH
  THURSDAY...FOLLOWED BY ANOTHER ROUND OF POTENTIALLY VERY STRONG
  WINDS BEGINNING THURSDAY NIGHT.

* IMPACTS...WINDS THIS STRONG WILL CREATE DANGEROUS DRIVING
  CONDITIONS...ESPECIALLY FOR HIGH PROFILE VEHICLES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A HIGH WIND WARNING ON THE SUMMITS MEANS THAT WINDS ARE EXPECTED
TO BE AT LEAST 56 MPH.

&&

$$

HIZ022-310245-
/O.UPG.PHFO.HW.A.0002.141230T1600Z-141231T1600Z/
/O.NEW.PHFO.WI.Y.0038.141230T1600Z-141231T1600Z/
HALEAKALA SUMMIT-
333 AM HST TUE DEC 30 2014

...WIND ADVISORY IN EFFECT FROM 6 AM THIS MORNING TO 6 AM HST
WEDNESDAY...

THE NATIONAL WEATHER SERVICE IN HONOLULU HAS ISSUED A WIND
ADVISORY...WHICH IS IN EFFECT FROM 6 AM THIS MORNING TO 6 AM HST
WEDNESDAY. THE HIGH WIND WATCH IS NO LONGER IN EFFECT. 

* WINDS...SOUTHWEST 30 TO 50 MPH WITH HIGHER GUSTS ABOVE 9000 FT.

* TIMING...INCREASING TODAY AND PEAKING IN THE LATE AFTERNOON AND
  EVENING.

* IMPACTS...WINDS THIS STRONG WILL CREATE HAZARDOUS DRIVING
  CONDITIONS...ESPECIALLY FOR HIGH PROFILE VEHICLES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND ADVISORY ON THE SUMMITS MEANS THAT SUSTAINED WINDS OF 45
MPH OR MORE ARE EXPECTED. MOTORISTS SHOULD USE EXTRA CAUTION.

&&

$$
WROE

AREA FORECAST DISCUSSION...CORRECTED
NATIONAL WEATHER SERVICE HONOLULU HI
330 PM HST MON DEC 29 2014

.SYNOPSIS...
COOL...DRY...AND STABLE CONDITIONS WILL PERSIST THROUGH TONIGHT AS
EASTERLY WINDS WEAKEN AND SHIFT TO SOUTHERLIES. A FRONT WILL MOVE
DOWN THE ISLAND CHAIN TUESDAY AND TUESDAY NIGHT...BRINGING GUSTY
WINDS AND MODEST RAINFALL. A BRIEF PERIOD OF RATHER DRY NORTHERLY
FLOW IS EXPECTED WEDNESDAY INTO NEW YEARS DAY...FOLLOWED BY POSSIBLY
ACTIVE WEATHER THURSDAY NIGHT INTO SATURDAY.

&&

.DISCUSSION...
FORECAST PHILOSOPHY HAS NOT CHANGED FROM THIS MORNING. A WEAK RIDGE
TO OUR NORTH WILL KEEP STABLE AND DRY CONDITIONS IN PLACE THROUGH
TONIGHT AS WINDS WEAKEN. THE RIDGE WILL BE DISPLACED SOUTHWARD OVER
THE ISLANDS TONIGHT BY AN ADVANCING FRONT WHICH WILL MOVE DOWN THE
ISLAND CHAIN TUESDAY AND TUESDAY NIGHT. MODELS SHOW AN UPPER TROUGH
WILL MOVE OVER THE ISLANDS ON TUESDAY AS A SURFACE LOW DEVELOPS
SEVERAL HUNDRED MILES NORTH OF THE ISLANDS...SENDING A SURFACE FRONT
ACROSS THE STATE. THE STRONGEST DYNAMICS WILL PASS JUST NORTH OF THE
ISLANDS...AND MOISTURE OVER THE ISLANDS WILL BE SOMEWHAT LIMITED. AS
A RESULT...HEAVY RAINFALL AND THUNDERSTORMS ARE NOT EXPECTED.
HOWEVER...WINDS WILL LIKELY BECOME BREEZY AND GUSTY JUST AHEAD OF
AND BEHIND THE FRONT.

DRY POST-FRONTAL NORTHERLY WINDS ARE IN STORE FOR WEDNESDAY AS THE
FRONT PUSHES NEAR OR JUST EAST OF THE BIG ISLAND. WINDS WILL
DECREASE ON NEW YEARS EVE.

A SECOND UPPER TROUGH IS FORECAST TO DEVELOP ACROSS THE AREA FROM
LATE NEW YEARS DAY INTO SATURDAY. MODELS SHOW 500 MB TEMPERATURES
BETWEEN MINUS 13 AND MINUS 18 DEGREES C AS THIS FEATURE PASSES
OVERHEAD AND...DUE TO THE EXPECTED ADDITION OF ENHANCED MID-LEVEL
MOISTURE...A SLIGHT CHANCE OF THUNDERSTORMS IS FORECAST FOR FRIDAY.
SOME OF THESE THUNDERSTORMS COULD BE STRONG IF CONDITIONS COME
TOGETHER AS ADVERTISED. HOWEVER...THERE IS STILL UNCERTAINTY IN HOW
THIS WILL PAN OUT AND FORECAST CHANGES SHOULD BE EXPECTED.

STRONG WINDS ARE POSSIBLE ACROSS THE HIGHEST SUMMITS ON MAUI AND THE
BIG ISLAND. HIGH ELEVATION WINDS WILL INCREASE TUESDAY AND COULD
REACH HIGH WIND WARNING THRESHOLD AHEAD OF AND NEAR THE FRONT.
THEREFORE...A HIGH WIND WATCH FOR THE SUMMIT AREAS OF
HALEAKALA...MAUNA LOA AND MAUNA KEA IS IN EFFECT FOR TUESDAY AND
TUESDAY NIGHT. WINDY CONDITIONS ON THE SUMMITS MAY CONTINUE
WEDNESDAY AND NEW YEARS DAY...AND ANOTHER BOUT OF STRONG WINDS IS
LIKELY THURSDAY NIGHT INTO SATURDAY AS THE SECOND UPPER TROUGH
DEVELOPS.

&&

.AVIATION...
VFR CONDITIONS PREVAIL AT ALL TAF SITES AND THESE CONDITIONS ARE
EXPECTED TO PREVAIL THROUGH THIS EVENING AND ON THROUGH THE NIGHT.
WINDS ARE LIGHT ACROSS THE AREA WITH LOCAL DAYTIME SEA BREEZES AND
NIGHTTIME LAND BREEZES EXPECTED. A FRONT WILL BE APPROACHING THE
AREA ON TUESDAY WITH INCREASING SOUTHWESTERLY WINDS OUT AHEAD OF IT.

&&

.MARINE...
SURF HEIGHTS ALONG NORTH-FACING SHORES ARE EXPECTED TO REMAIN BELOW
ADVISORY LEVELS THROUGH TUESDAY. A LARGER NORTHWEST SWELL IS
EXPECTED TO BOOST SURF HEIGHTS TO NEAR ADVISORY LEVELS FROM TUESDAY
NIGHT THROUGH NEW YEARS DAY.

WIND SPEEDS AND COMBINED SEAS ARE EXPECTED TO REMAIN BELOW THE SMALL
CRAFT ADVISORY /SCA/ THRESHOLD THROUGH TONIGHT. HOWEVER...SCA WINDS
ARE EXPECTED ALONG AND BEHIND A FRONT THAT WILL MOVE DOWN THE ISLAND
CHAIN TUESDAY AND TUESDAY NIGHT. LOCALLY GENERATED WIND WAVES
COMBINED WITH A MODERATE NORTHWEST SWELL WILL PRODUCE ROUGH SEAS
AROUND THE 10 FOOT SCA THRESHOLD DURING THIS TIME. THEREFORE...AN
SCA WILL GO INTO EFFECT FOR MOST LOCAL WATERS STARTING 6 AM HST
TUESDAY.

&&

.HFO WATCHES/WARNINGS/ADVISORIES...
SMALL CRAFT ADVISORY TUESDAY AND TUESDAY NIGHT FOR ALL WATERS EXCEPT
FOR MAALAEA BAY...LEEWARD BIG ISLAND WATERS AND WATERS SOUTHEAST OF
THE BIG ISLAND.

SMALL CRAFT ADVISORY TUESDAY THROUGH WEDNESDAY AFTERNOON FOR ALL
WINDWARD WATERS...KAUAI AND OAHU LEEWARD WATERS...KAUAI NORTHWEST
WATERS AND THE KAUAI CHANNEL.

HIGH WIND WATCH TUESDAY AND TUESDAY NIGHT FOR HALEAKALA...MAUNA LOA
AND MAUNA KEA SUMMIT AREAS.

&&

PUBLIC/MARINE...POWELL
AVIATION...BURKE