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000
FZHW50 PHFO 081901
SRFHFO
SURF ZONE FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
900 AM HST FRI AUG 8 2008
HIZ005>011-090100-
OAHU-
900 AM HST FRI AUG 8 2008
SURF ALONG SOUTH FACING SHORES WILL BE 1 TO 3 FEET TODAY THROUGH
SATURDAY.
SURF ALONG WEST FACING SHORES WILL BE 2 FEET OR LESS TODAY THROUGH
SATURDAY.
SURF ALONG EAST FACING SHORES WILL BE 5 TO 7 FEET TODAY THROUGH
SATURDAY.
SURF ALONG NORTH FACING SHORES WILL BE 2 FEET OR LESS TODAY THROUGH
SATURDAY.
OUTLOOK THROUGH THURSDAY AUG 14:
SURF ALONG EAST FACING SHORES WILL GRADAULLY LOWER THROUGH THE
MIDDLE OF NEXT WEEK. NO OTHER SIGNIFICANT SWELLS ARE EXPECTED.
SURF HEIGHTS ARE FORECAST HEIGHTS OF THE FACE OR FRONT OF WAVES. THE
SURF FORECAST IS BASED ON THE SIGNIFICANT WAVE HEIGHT IN THE ZONE OF
MAXIMUM REFRACTION. SOME WAVES MAY BE MORE THAN TWICE AS HIGH AS THE
SIGNIFICANT WAVE HEIGHT. EXPECT TO ENCOUNTER RIP CURRENTS IN OR NEAR
ANY SURF ZONE.
&&
COLLABORATIVE NEARSHORE SWELL AND WIND FORECAST FOR OAHU
NWS/NCDDC HONOLULU HI
300 PM HST WED AUG 6 2008
THIS COLLABORATIVE FORECAST WILL BE UPDATED MONDAY THROUGH FRIDAY AT
300 PM WHEN PAT CALDWELL IS AVAILABLE. WHEN PAT CALDWELL IS NOT
AVAILABLE...THE LATEST COLLABORATIVE FORECAST WILL REMAIN POSTED FOR
4 DAYS.
FORECAST SWL DMNT DMNT H H HGT WIND WIND SPD
DATE HGT DIR PD 1/3 1/10 TEND PROB SPD DIR TEND
1 PM 6 E 7 2 4 UP 13-21 E SAME
08/06 2 S 13 2 4 SAME
THU 7 E 8 4 6 UP LOW 17-21 E UP
08/07 2 S 13 2 4 SAME LOW
FRI 9 E 8 6 8 UP LOW 19-23 E UP
08/08 2 S 12 2 4 SAME LOW
SAT 9 E 8 6 8 DOWN LOW 19-23 E DOWN
08/09 2 SE 11 2 4 UP LOW
SUN 7 E 8 4 6 DOWN LOW 13-19 E SAME
08/10 2 SE 10 2 4 SAME LOW
MON 6 E 8 2 4 DOWN LOW 13-19 E SAME
08/11 2 SE 10 2 4 SAME LOW
LEGEND:
SWL HGT OPEN OCEAN SWELL HEIGHT MEASURED FROM TROUGH TO CREST
IN FEET LOCATED 20 NAUTICAL MILES OFFSHORE
DMNT DIR DOMINANT DIRECTION TYPICALLY +/-10 DEGREES IN 16 COMPASS
POINTS
DMNT PD DOMINANT PERIOD IN SECONDS
H1/3 SIGNIFICANT WAVE HEIGHT IN THE SURF ZONE
H1/10 AVERAGE HEIGHT OF THE HIGHEST ONE-TENTH WAVES IN THE SURF
ZONE
HGT TEND HEIGHT TENDENCY OF SWELL (VALID VALUES: UP/DOWN/SAME)
PROB PROBABILITY OF OCCURRENCE (VALID VALUES: HIGH/MED/LOW)
WIND SPD OPEN WATER WIND SPEED MEASURED IN KNOTS LOCATED
20 NAUTICAL MILES OFFSHORE
WIND DIR WIND DIRECTION IN 16 COMPASS POINTS
SPD TEND WIND SPEED TENDENCY (VALID VALUES: UP/DOWN/SAME)
SURF HEIGHTS WILL VARY BETWEEN DIFFERENT BEACHES AND AT THE SAME
BEACH AT DIFFERENT BREAK AREAS.
DISCUSSION:
SUMMARY...
EASTERN SHORES TO TOP THE HEIGHTS FOR THE WEEKEND.
DETAILED...
MID WEDNESDAY ON EASTERN SHORES HAS SMALL TO MODERATE BREAKERS FROM
60-100 DEGREES WITH 5-8 SECOND PERIODS. MODERATE TO FRESH TRADES
OVER THE ISLANDS AND WELL UPSTREAM OF HAWAII TO THE NORTHEAST TO
EAST ARE MODELLED TO INCREASE INTO FRIDAY AS THE WINDSWELL BUILDS.
THE SURFACE HIGH PRESSURE CENTERED NNE OF HAWAII IS MODELLED TO
REACH 1030 MB AS A MAXIMUM LATE FRIDAY...ENOUGH TO SUPPORT FRESH TO
STRONG TRADE WINDS OVER THE ISLANDS. SEE THE LATEST NWS CENTRAL
PACIFIC HURRICANE CENTER FOR DISCUSSION OF A SMALL TROPICAL FEATURE
SSE OF THE BIG ISLAND. AT PRESENT...NO INFLUENCE ON LOCAL SURF OR
WINDS IS EXPECTED FROM THIS FEATURE.
SURF SHOULD CLIMB INTO THE MODERATE TO NEAR HIGH CATEGORY ON
FRIDAY...PEAK FRIDAY NIGHT...AND SLOWLY DROP ON SATURDAY AS THE
WINDS BACK DOWN A NOTCH. SMALL TO MODERATE SURF IS EXPECTED ON
SUNDAY INTO MONDAY FROM 60-100 DEGREES UNDER MOSTLY MODERATE TRADES.
MID WEDNESDAY ON SOUTHERN SHORES FINDS BELOW SUMMER AVERAGE
CONDITIONS WITH INCONSISTENT...TINY TO SMALL BREAKERS. MORE OF THE
SAME IS EXPECTED THROUGH THE PERIOD.
FRESH TO STRONG TRADES SE OF TAHITI LAST THURSDAY INTO EARLY THIS
WEEK COULD MAKE FOR SMALL SURF LOCALLY OUT OF 140-160 DEGREES
STARTING LATE FRIDAY AND HOLDING INTO NEXT WEEK. THE COMBINATION OF
EASTERLY AND SOUTHEASTERLY WINDSWELL COULD MAKE FOR MODERATE TO NEAR
HIGH BREAKERS AT SELECT EXPOSURES OF SE OAHU FRIDAY INTO SATURDAY.
INTO THE LONG RANGE...LOW PRESSURE RESETTLED TO THE EAST OF NEW
ZEALAND THIS PAST MONDAY ALTHOUGH WINDS WERE SUB GALES. THIS SHOULD
GIVE WAY TO A SMALL EPISODE NEXT WEEK STARTING LATE TUESDAY FROM
185-200 DEGREES WITH 13-15 SECOND PERIODS. MODELS SHOW NEW LOW
PRESSURE AREAS E TO SE OF NEW ZEALAND THIS WEEKEND INTO EARLY NEXT
WEEK...THAT COULD GIVE WAY TO SMALL A EPISODE FOR THE WEEKEND OF
8/16 TRENDING UP THE FOLLOWING WEEK.
IN THE NORTHERN HEMISPHERE...HIGH PRESSURE IS MODELLED TO HOLD NORTH
OF THE ISLANDS KEEPING MODERATE TRADES WITH PEAK DAYS INTO FRESH
LEVELS. TROPICAL ACTIVITY IN THE EASTERN AND CENTRAL PACIFIC WILL BE
MONITORED FOR INFLUENCE ON LOCAL SURF AND WIND. LONG RANGE ESTIMATES
ARE SUBJECT TO CHANGE. THE NEXT COLLABORATIVE FORECAST WILL BE
ISSUED ON FRIDAY...AUGUST 8.
THIS FORECAST WAS PRODUCED THROUGH THE COLLABORATIVE EFFORTS OF
NWS AND NCDDC. PLEASE SEND SUGGESTIONS TO W-HFO.WEBMASTER@NOAA.GOV
OR CALL THE WARNING COORDINATION METEOROLOGIST AT 808-973-5275.
ADDITIONAL RESOURCES:
SEE /IN LOWERCASE/ HTTP://WWW.PRH.NOAA.GOV/HNL/PAGES/MARINE.PHP
$$
NWS FORECASTER BURKE AND NCDDC PAT CALDWELL