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High surf advisory in effect until Friday morning

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE HONOLULU HI
354 PM HST THU NOV 12 2009

…LARGE SHORT PERIOD NORTH-NORTHEAST SWELL TO CONTINUE…

OVERVIEW…A STRONG HIGH PRESSURE SYSTEM FAR NORTH OF THE ISLANDS HAS COMBINED WITH A NEARBY LOW PRESSURE SYSTEM TO CREATE A LARGE NORTH-NORTHEAST SWELL THAT IS NOW MOVING THROUGH HAWAIIAN WATERS. THE SWELL IS FORECAST TO TURN TOWARD THE EAST-NORTHEAST MORE OVERNIGHT AND FRIDAY. THE SWELL AND SURF ARE EXPECTED TO REMAIN ELEVATED INTO THE WEEKEND.

NIIHAU-OAHU NORTH SHORE-MOLOKAI WINDWARD-MOLOKAI LEEWARD-
LANAI MAKAI-MAUI WINDWARD WEST-MAUI CENTRAL VALLEY-
WINDWARD HALEAKALA-BIG ISLAND NORTH AND EAST-
354 PM HST THU NOV 12 2009

…HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 AM HST FRIDAY…

SURF ALONG NORTH FACING SHORES OF NIIHAU OAHU MOLOKAI AND MAUI WILL BE AT ADVISORY LEVELS OF 12 TO 18 FEET THROUGH TONIGHT. MEANWHILE…EAST FACING SHORES OF MOLOKAI LANAI MAUI AND THE BIG ISLAND WILL HAVE SURF AT ADVISORY LEVELS OF 10 TO 14 FEET.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

A HIGH SURF ADVISORY MEANS THAT HIGH SURF WILL AFFECT BEACHES IN THE ADVISORY AREA…PRODUCING RIP CURRENTS AND LOCALIZED BEACH EROSION. FORECAST SURF HEIGHTS ARE ESTIMATES OF THE HEIGHT OF THE FACE…OR FRONT…OF WAVES.

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