CWFHFO/ FOR MORE DETAILS. THE LONG PERIOD ENERGY OF A SOUTHERN HEMISPHERE SWELL IS EXPECTED TO ARRIVE TONIGHT AND SLOWLY BUILD THROUGH THE WEEK. SURF HEIGHTS ALONG SOUTH FACING SHORES MAY REACH ADVISORY LEVELS ON FRIDAY WHEN THE SWELL IS EXPECTED TO BUILD TO 4 FEET. && .HFO WATCHES/WARNINGS/ADVISORIES... SMALL CRAFT ADVISORY UNTIL 4 PM HST THIS AFTERNOON FOR KAUAI NORTHWEST WATERS-KAUAI WINDWARD WATERS-KAUAI LEEWARD WATERS-OAHU WINDWARD WATERS-OAHU LEEWARD WATERS-MAUI COUNTY WINDWARD WATERS- MAUI COUNTY LEEWARD WATERS-BIG ISLAND WINDWARD WATERS. SMALL CRAFT ADVISORY UNTIL 4 PM HST WEDNESDAY FOR KAUAI CHANNEL- KAIWI CHANNEL-MAALAEA BAY-PAILOLO CHANNEL-ALENUIHAHA CHANNEL-BIG ISLAND LEEWARD WATERS-BIG ISLAND SOUTHEAST WATERS. && $$