High Surf in Hawaii, April 14 to 15, 2012

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HONOLULU HI
330 AM HST SAT APR 14 2012

.SYNOPSIS...
LIGHT SOUTHEAST WINDS WILL ALLOW SEA BREEZES TO FORM OVER THE
ISLANDS THIS AFTERNOON. SHOWERS WILL FAVOR INTERIOR SECTIONS THIS
AFTERNOON. HIGH PRESSURE BUILDING TO OUR NORTH WILL BRING BACK THE
TRADE WINDS TONIGHT AND INTO SUNDAY. TRADES WILL THEN PERSIST NEXT
WEEK.

&&

.DISCUSSION...
TODAY WILL BE A TRANSITION DAY AS TRADES BEGIN TO NOSE BACK IN FROM
THE EAST. WINDS SHOULD STAY LIGHT ENOUGH TO ALLOW FOR ANOTHER ROUND
OF SEA BREEZES AND AFTERNOON CLOUDS/SHOWERS FOR LEEWARD SECTIONS.
WINDWARD MAUI AND KAU/PUNA DISTRICTS OF THE BIG ISLAND WILL SEE A
FEW SHOWERS THIS MORNING. EXPECT TRADES TO BECOME MORE NOTICEABLE
THIS EVENING AS PRECIP BECOMES FOCUSED BACK ALONG REMAINING WINDWARD
TERRAIN.

TRADES WILL RETURN TO MODERATE LEVELS SUNDAY. HIGH PRESSURE WILL
BECOME DOMINANT THROUGH THE SUBTROPICS AGAIN SUSTAINING MODERATE-
FRESH TRADES ALONG WITH WINDWARD PRECIP NEXT WEEK.

&&

.PREVIOUS DISCUSSION.../ISSUED 800 PM HST FRIDAY EVENING/
THE FORECAST IS LOOKING IN GOOD SHAPE TO GET THE NIGHT SHIFT
ROLLING. AFTERNOON CONVECTIVE CLOUDS/SHOWERS WILL GIVE WAY TO MAINLY
CLEAR SKIES TONIGHT THROUGH TOMORROW MORNING. THERE MAY BE A FEW
STRAY SHOWERS FORMING ALONG THE OVERNIGHT LAND BREEZE BOUNDARIES
OVER THE COASTAL WATERS BUT ISOLATED AT BEST. THE SOUTHEAST WINDWARD
BIG ISLAND MAY SEE A FEW SHOWERS MOVE ASHORE IN THE SOUTHEAST FLOW
TONIGHT...HOWEVER THE LAND BREEZES MAY BE ABLE TO FEND THOSE OFF
TOO.

SATURDAY WILL BE A TRANSITION DAY BACK TO TRADES. WINDS WILL REMAIN
LIGHT ENOUGH FOR PLENTY OF SUN EARLY ALLOWING FOR A BEAUTIFUL
MORNING TO START THE WEEKEND. ONE MORE ROUND OF SEA BREEZES WILL
PRODUCE LEEWARD CLOUDS AND A FEW SHOWERS IN THE AFTERNOON THOUGH.
EASTERLY FLOW WILL RETURN SATURDAY EVENING AS HEIGHTS/PRESSURES
RISE OVER CENTRAL PACIFIC SUBTROPICS. HAZE WILL REMAIN AN ISSUE FOR
SOME SMALL ISLAND AREAS UNTIL THE TRADES SCOUR IT OUT BY SUNDAY.

TRADES WILL BE BACK IN GEAR SUNDAY...THEN HIT THE REPEAT BUTTON
MONDAY THROUGH FRIDAY WITH A PRETTY STANDARD FRESH TRADE PATTERN
EXPECTED ALL WEEK. ANY SUBTLE DAY-TO-DAY FLUCUATIONS WILL BE TAKEN
CARE OF ON A NEAR TERM BASIS LIKE USUAL.

&&

.AVIATION...
VFR/SKC WILL PREVAIL FOR THE FA THROUGH AT LEAST 14/23Z. EXP BKN-OVC
LEEWARD CIGS BTN 040-070 AFT 23Z-00Z TOMORROW WITH ISOL TOPS
150-FL200. TRADE FLOW WILL INCREASE GRADUALLY AND BECOME MORE ENERLY
AFT 15/04Z.

&&

.MARINE...
NORTHWEST SWELL WILL BE FILLING IN TODAY PUSHING EXPOSED AREAS TO
ADVISORY LEVELS OF 15 FT OR GREATER LATE MORNING INTO THE AFTERNOON
HOURS. THIS WILL BUILD FURTHER INTO TOMORROW POSSIBLY SCRAPING THE
20FT MARK BEFORE DROPPING INTO EARLY NEXT WEEK.

ANOTHER ROUND OF SOUTHERN HEMI SWELL WILL PUSH SOUTH FACERS INTO THE
CHEST-SHOULDER HIGH RANGE FOR THE WEEKEND. TOP AREAS WILL SEE A FEW
OVERHEAD SETS SNEAK THROUGH. THIS WILL DROP GRADUALLY DURING THE
FIRST HALF OF NEXT WEEK.

LIGHT WINDS WILL INCREASE TONIGHT INTO SUNDAY AS FRESH NORTHWEST
SWELL FILLS IN. THE POSSIBILITY OF SMALL CRAFT ADVISORIES COMBINED
SEAS WILL INCREASE THIS WEEKEND...AND POSSIBILY FOR WINDS IN THE
MAUI/HAWAII COUNTY CHANNELS BY MONDAY/TUESDAY.

&&

.HFO WATCHES/WARNINGS/ADVISORIES...
HIGH SURF ADVISORY FROM NOON TODAY TO 8 PM HST SUNDAY FOR EXPOSED
NORTH AND WEST FACING SHORES OF THE SMALLER ISLANDS.

&&

DEJESUS