High surf advisory for north and west shores of Kauaʻi, Niʻihau beginning 6 a.m. Wednesday

The National Weather Service has issues a high surf advisory for north and west facing shores of Kauaʻi and Niʻihau, beginning at 6 a.m. Wednesday and lasting until 4 a.m. Friday.

A large long-period northwest to north-northwest swell will quickly fill in Wednesday morning and peak Wednesday night into Thursday morning.

The forecast is for the surf to rise to 15 to 20 feet along north facing shores and 10 to 15 feet along west facing shores.

The high surf advisory also is for west facing shores on Oʻahu and Molokaʻi and north facing shores of Maui.

Strong breaking waves and strong currents will make swimming dangerous. Heed all advice from ocean safety officials. When in doubt, don’t go out.