...HIGH SURF ADVISORY FOR NORTH AND WEST FACING SHORES OF NIIHAU KAUAI OAHU AND MOLOKAI AND NORTH FACING SHORES OF MAUI THROUGH FRIDAY AFTERNOON...
..A large, long period north-northwest swell will slowly decline through tonight.
* WHAT...Surf heights of 14 to 18 feet along north-facing shores, 10 to 14 feet along west-facing shores.
* WHERE...North and west facing shores of Niihau, Kauai, Oahu and Molokai and the north facing shores of Maui.
* WHEN...Until 6 PM HST this evening.
* IMPACTS...Moderate. Strong breaking waves and strong currents will make swimming dangerous.