High Surf Warning 12/21/2024 05:51 for Hawaii areas

...HIGH SURF WARNING FOR NORTH AND WEST FACING SHORES OF NIIHAU KAUAI OAHU MOLOKAI AND NORTH FACING SHORES OF MAUI... ...HIGH SURF WARNING FOR WEST FACING SHORES OF THE BIG ISLAND... ...HIGH SURF ADVISORY FOR NORTH FACING SHORES OF THE BIG ISLAND... .An extended period of hazardous surf and beach conditions will persist into early next week along exposed north and west facing shores due to overlapping, winter-caliber north-northwest swells (315-330 degrees). The largest swell in the series is expected to arrive tonight, rapidly rise early Sunday, peak through the day Sunday, and then gradually ease Sunday night into early next week. Surf associated with this swell will remain well above warning levels through the weekend, then return to advisory levels for exposed north and west facing shores around Tuesday of next week. * WHAT...Surf of 30 to 40 feet, building to 40 to 50 feet Sunday along north facing shores of Niihau, Kauai, Oahu, Molokai and Maui. Surf of 15 to 25 feet, building to 25 to 35 feet Sunday along west facing shores of Niihau, Kauai, Oahu, and Molokai. Surf of 8 to 12 feet along west facing shores of the Big Island * WHERE...North and west facing shores of Niihau, Kauai, Oahu, Molokai, north facing shores of Maui, and west facing shores of the Big Island. * WHEN...Until 6 AM HST Monday, with a peak expected through the day Sunday. The best chance for coastal impacts to properties and roadways will be during the peak daily high tides through the early morning hours. * IMPACTS...Very High...Expect ocean water surging and sweeping across beaches, coastal benches, and lava flows creating the potential for impacts to coastal properties and infrastructure, including roadways. Powerful longshore and rip currents will be present at most beaches. Large breaking waves and strong currents may impact harbor entrances and channels causing challenging boat handling.