Wind Advisory 44, NWS Honolulu, HI

911 
WWHW70 PHFO 081014
NPWHFO

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE HONOLULU HI
1214 AM HST SAT JUN 8 2013

HIZ028-081115-
/O.CAN.PHFO.WI.Y.0044.000000T0000Z-130608T1600Z/
BIG ISLAND SUMMITS-
INCLUDING THE CITY OF...MAUNA LOA AND MAUNA KEA ABOVE 8000 FEET
1214 AM HST SAT JUN 8 2013

...WIND ADVISORY IS CANCELLED...

WINDS AT THE SUMMITS HAVE FALLEN BELOW ADVISORY CRITERIA.

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HONOLULU HI
400 PM HST FRI JUN 7 2013

.SYNOPSIS...
HIGH PRESSURE NORTH OF THE AREA WILL BRING SOMEWHAT DRIER THAN
NORMAL SUMMERTIME TRADE WIND WEATHER FOR THE NEXT SEVERAL DAYS.
PASSING HIGH CLOUDS WILL LIMIT SUNSHINE FROM LATE IN THE WEEKEND
THROUGH EARLY NEXT WEEK.

&&

.DISCUSSION...
WATER VAPOR IMAGERY SHOWS AN UPPER LEVEL LOW NORTHEAST OF THE BIG
ISLAND. AT THE SURFACE...HIGH PRESSURE IS LOCATED FAR NORTHEAST OF
THE STATE...WITH A STALLED FRONT FAR TO THE NORTH AND NORTHWEST. A
STRONGER HIGH IS LOCATED NORTHWEST OF THE FRONT...AND THIS HIGH
WHICH WILL BECOME OUR MAIN FEATURE OVER THE WEEKEND. 00Z SOUNDINGS
SHOW INVERSIONS ARE WEAK...AND RANGE FROM 6KFT AT LIHUE TO 10KFT AT
HILO. PRECIPITABLE WATERS ARE 1.2-1.3 INCHES...WHICH ARE NEAR NORMAL
FOR THIS TIME OF YEAR.

THE UPPER LEVEL TROUGHING NEAR THE STATE HAS DESTABILIZED THE
ATMOSPHERE SLIGHTLY. HOWEVER...RAINFALL AMOUNTS HAVE BEEN GENERALLY
ON THE LIGHT SIDE...AROUND A QUARTER OF AN INCH OR LESS OVER THE
PAST 12 HOURS /WITH HIGHER AMOUNTS ON KAUAI/. A BAND OF SHOWERY
CLOUDS EXTENDING WELL UPSTREAM TO THE EAST FROM MAUI COUNTY WILL
AFFECT OAHU AND POSSIBLY KAUAI...PROVIDE SOME ENHANCEMENT TO SHOWERS
TONIGHT.

THE HIGH NORTHEAST OF THE AREA IS EXPECTED TO WEAKEN...WHILE A NEW
HIGH BUILDS IN TO OUR NORTH. THE GFS/ECMWF/NAVGEM ARE ALL SIMILAR
WITH THIS PATTERN. THE NEW HIGH WILL MAINTAIN A SIMILAR PRESSURE
GRADIENT ACROSS THE STATE...WITH MODERATE TO LOCALLY BREEZY TRADE
WINDS. THE UPPER LEVEL LOW NORTHEAST OF THE BIG ISLAND WILL SLOWLY
MOVE NORTHEAST...WITH A RIDGE BUILDING ACROSS THE STATE FROM THE
SOUTH THIS WEEKEND. THE BUILDING HEIGHTS AND SUBSIDENCE WILL HELP TO
STRENGTHEN AND LOWER THE INVERSION. SOUTHWESTERLY UPPER LEVEL FLOW
BETWEEN THE RIDGE AND A TROUGH WELL WEST OF THE STATE WILL BRING
MID-HIGH LEVEL MOISTURE ACROSS THE STATE FROM THIS WEEKEND THROUGH
EARLY NEXT WEEK. WHILE THE INVERSION LOWERS...FORECAST SOUNDINGS AND
CROSS SECTIONS SHOW A FAIR AMOUNT OF MOISTURE AVAILABLE BELOW THE
INVERSION. WE SHOULD CONTINUE TO SEE A TYPICAL TRADE WIND
DISTRIBUTION TO CLOUDS AND SHOWERS...ALTHOUGH RAINFALL AMOUNTS WILL
BE LESS THAN NORMAL.

&&

.MARINE...
A SMALL CRAFT ADVISORY REMAINS IN EFFECT FOR THE TYPICALLY WINDIER
AREAS NEAR MAUI AND THE BIG ISLAND. WITH THE NEW HIGH BUILDING NORTH
OF THE STATE OVER THE WEEKEND...WINDS ARE EXPECTED TO REMAIN AT
THEIR CURRENT STRENGTH...AND PERHAPS STRENGTHEN SLIGHTLY DURING THE
MIDDLE OF NEXT WEEK. THE SMALL CRAFT CURRENTLY RUNS THROUGH THE
WEEKEND...AND EVENTUALLY WILL NEED TO BE EXTENDED INTO THE NEW WEEK.

THE CURRENT SOUTH SWELL WILL CONTINUE TO SUBSIDE...WITH A NEW SMALL
SWELL EXPECTED LATE SUNDAY INTO MONDAY. TRADE WINDS WILL KEEP SMALL
TO MODERATE SURF ALONG EAST FACING SHORES. THE EASTERLY TRADE SWELL
WILL DIMINISH SLIGHTLY THIS WEEKEND AS THE UPSTREAM FETCH DROPS
OFF...BUT SHOULD PICK UP AGAIN MID/LATE WEEK AS THE NEW HIGH SETTLES
IN FAR NORTHEAST OF THE STATE.

&&

.AVIATION...
BREEZY VFR CONDS WILL PERSIST. ISOL MVFR CIGS EXPECTED ALONG
WINDWARD COASTS AND MTN SLOPES. AIRMET TANGO FOR MODERATE LOW LEVEL
TURB LEEWARD OF THE ISLANDS WILL BE NEEDED FOR THE FORESEEABLE
FUTURE.

&&

.HFO WATCHES/WARNINGS/ADVISORIES...
SMALL CRAFT ADVISORY UNTIL 6 PM HST WEDNESDAY FOR MAALAEA BAY-
PAILOLO CHANNEL-ALENUIHAHA CHANNEL-BIG ISLAND LEEWARD WATERS-BIG
ISLAND SOUTHEAST WATERS.

&&

DISCUSSION/MARINE...BRAVENDER
AVIATION...A BEDAL