FXHW60 PHFO 051351
AFDHFO
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HONOLULU HI
400 AM HST SAT DEC 5 2009
.SYNOPSIS...
REMNANTS OF A COLD FRONT WILL LINGER OVER THE ISLANDS BRINGING SOME
CLOUDS AND SHOWERS TODAY. WINDS WILL STAY LIGHT THROUGH SUNDAY AS
HIGH PRESSURE MOVES NEAR THE ISLANDS...ALLOWING FOR DAYTIME SEA
BREEZES AND NIGHTTIME LAND BREEZES TO BE MORE PROMINENT. THE NEXT
COLD FRONT WILL REACH KAUAI SUNDAY NIGHT...AND DISSIPATE AS IT
APPROACHES OAHU. HIGH PRESSURE WILL MOVE TO NORTHWEST OF
THE STATE EARLY NEXT WEEK...WITH TRADE WINDS RETURNING.
&&
.DISCUSSION...
FRONT HAS PRETTY MUCH DISSIPATED IN THE VICINITY OF THE BIG ISLAND
EARLIER THIS MORNING...THOUGH REMAINS OF THE FRONT CONTINUE TO
LINGER IN THE AREA...BRINGING SOME CLOUDS AND EVEN SOME SHOWERS.
MORNING LIHUE SOUNDING REVEALS A STRONG INVERSION AT ABOUT 6K FT
WHILE HILOS SHOWED DEEPER LOW LEVEL MOISTURE TO ABOUT 10K FT UNDER A
WEAK INVERSION. NOT SURPRISING RESULTS CONSIDER THE LOCATION OF THE
DISSIPATED FRONT. REGARDLESS...STILL EXPECT A FAIR WEATHER DAY FOR
THE ISLANDS AS STABLE AIR MASS SPREADING OVER THE ISLAND CHAIN.
WINDS WILL BE LIGHT AND VARIABLE WITH LAND AND SEA BREEZES BEING
MORE NOTICEABLE AS A WEAK HIGH PRESSURE MOVES NEAR THE ISLANDS.
FAIR WEATHER CONDITIONS SHOULD CONTINUE THROUGH SUNDAY. THE NEXT
FRONT IS EXPECTED TO REACH KAUAI LATE SUNDAY INTO EARLY MONDAY.
FORECAST CHARTS STILL INDICATE THIS FRONT WILL REMAIN WEAK...AND
DISSIPATE NEAR OAHU. CLOUDS AND SHOWERS ASSOCIATED WITH THE FRONT
WILL PROBABLY AFFECT KAUAI AND OAHU...AND MAY SPREAD TO THE REST OF
THE ISLANDS THROUGH MONDAY. DO NOT EXPECT MUCH OF A WEATHER EVENT
WITH THIS FRONT...AS AIR MASS IS FORECAST TO REMAIN MAINLY STABLE.
HIGH PRESSURE WILL MOVE TO NORTHWEST OF THE AREA BEHIND THE
FRONT...BRINGING TRADE WINDS TO THE ISLANDS LATER MONDAY THROUGH
WEDNESDAY. LATEST FORECAST CHARTS INDICATE THIS HIGH WILL PASS NORTH
OF THE ISLANDS BY THE MIDDLE OF NEXT WEEK...WITH A HIGH PRESSURE
RIDGE SAGGING NEAR THE AREA. LOOK FOR LIGHTER TRADE WINDS BY THE
LATER PART OF NEXT WEEK...WITH LAND AND SEA BREEZES ONCE AGAIN
BECOMING MORE DOMINANT UNDER THE LIGHTER TRADES.
&&
.MARINE...
LOOKS LIKE THE SWELL READINGS MAY HAVE PEAKED EARLIER AT THE BUOY
FAR NORTHWEST OF THE ISLANDS THIS MORNING...THOUGH READINGS REMAIN
QUITE ELEVATED AT THIS HOUR. THE SWELL HAS REACHED WAIMEA BUOY
EARLIER THIS MORNING AS WELL AND WILL CONTINUE THROUGH THE REST OF
THIS MORNING. THE COMBINATION OF THIS LARGE SWELL WITH THE HIGHER
TIDES IN THE NEXT COUPLE OF DAYS WILL CREATE GREATER POTENTIAL FOR
COASTAL INUNDATION. HIGH SURF WARNING AND ADVISORY CONTINUE FOR MOST
OF THE ISLANDS.
CURRENT SWELL WILL SLOWLY DIMINISH SUNDAY...BUT AN EVEN LARGER
NORTHWEST SWELL IS EXPECTED BY SUNDAY NIGHT. THIS SECOND SWELL WILL
BE GENERATED BY A PAIR OF DEEP LOWS FAR NORTH AND NORTHWEST OF THE
ISLANDS LATER TODAY...AS A VERY LARGE AND PERSISTENT FETCH OF STORM
FORCE OR GREATER WINDS POINTS TOWARDS THE AREA.
A SMALL CRAFT ADVISORY CONTINUES TO BE IN EFFECT FOR MOST COASTAL
ZONES FOR THE LARGE SWELL.
&&
.HFO WATCHES/WARNINGS/ADVISORIES...
HIGH SURF WARNING UNTIL 6 PM HST WEDNESDAY FOR NORTH AND WEST FACING
SHORES OF NIIHAU...KAUAI...OAHU...MOLOKAI...AND MAUI...AND FOR WEST
FACING SHORES OF THE BIG ISLAND.
HIGH SURF ADVISORY UNTIL 6 PM HST WEDNESDAY FOR EAST FACING SHORES
OF OAHU...AND FOR NORTHEAST FACING SHORES OF THE BIG ISLAND.
SMALL CRAFT ADVISORY UNTIL 6 AM HST SUNDAY FOR KAUAI NORTHWEST
WATERS-KAUAI WINDWARD WATERS-KAUAI LEEWARD WATERS-KAUAI CHANNEL-
OAHU WINDWARD WATERS-OAHU LEEWARD WATERS-KAIWI CHANNEL-MAUI
COUNTY WINDWARD WATERS-MAUI COUNTY LEEWARD WATERS-ALENUIHAHA
CHANNEL-BIG ISLAND WINDWARD WATERS-BIG ISLAND LEEWARD WATERS.
SMALL CRAFT ADVISORY FROM 6 AM SATURDAY TO 6 AM HST SUNDAY FOR
BIG ISLAND SOUTHEAST WATERS.
&&
$$
HUI
