310 WWHW70 PHFO 190615 NPWHFO URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE HONOLULU HI 815 PM HST SAT FEB 18 2006 ...DENSE FOG HAS DEVELOPED ACROSS THE SUMMITS OF THE BIG ISLAND... .A THICK LAYER OF MID LEVEL CLOUDS HAS MOVED ACROSS THE CENTRAL PACIFIC OCEAN. THIS BAND OF CLOUDINESS IS INTERSECTING THE SUMMITS OF THE BIG ISLAND ABOVE 9000 FEET IN ELEVATION. VISIBILITY WILL FREQUENTLY BE BELOW 1/4 OF A MILE THROUGH THE EARLY MORNING HOURS FOR THE SUMMITS. HIZ028-191400- /O.NEW.PHFO.FG.Y.0001.060219T0615Z-060219T1800Z/ BIG ISLAND SUMMITS- 815 PM HST SAT FEB 18 2006 ...DENSE FOG ADVISORY IN EFFECT UNTIL 8 AM HST SUNDAY... THE NATIONAL WEATHER SERVICE IN HONOLULU HAS ISSUED A DENSE FOG ADVISORY...WHICH IS IN EFFECT UNTIL 8 AM HST SUNDAY. VISIBILITY IS REDUCED BELOW 1/4 MILE THIS EVENING AND WILL CONTINUE THROUGH THE EARLY MORNING HOURS FOR ELEVATIONS ABOVE 9000 FEET ON THE SUMMITS. A DENSE FOG ADVISORY MEANS VISIBILITIES WILL FREQUENTLY BE REDUCED TO LESS THAN ONE QUARTER MILE. IF DRIVING...SLOW DOWN... USE YOUR HEADLIGHTS...AND LEAVE PLENTY OF DISTANCE AHEAD OF YOU. $$ PROTON