(BIVN) – The National Weather Service in Honolulu issued a Special Weather Statement on Thursday, as giant surf, strong northerly winds, and near peak monthly high tides will meet the north-facing shores of Hawaiʻi Island this weekend.
In the message, forecasters said coastal inundation is possible Sunday into Monday, adding:
A large captured fetch of Gale force winds approaching within 500nm of the state will send a large northwest to north- northwest (330 to 340 degrees) swell to the islands. Surf is expected to rapidly build early Sunday morning, peak Sunday evening into Sunday night at giant levels and steadily decrease Monday into Tuesday. Due to the combination of the giant surf, strong northerly winds, and near peak monthly high tides, overwash of low-lying coastal areas and roadways is likely Sunday through Monday, with the most vulnerable time frame around the high tide cycle Sunday night. Also, significant beach erosion can be expected and strong harbor surges may cause damage to boats and infrastructure along north and west facing coastlines and harbors.
According to the written discussion posted Thursday afternoon, High Surf Warnings will likely be required north facing shores of the Big Island this weekend, and Small Craft Advisories will also likely be required for all Hawaiian Waters.
“Surf along east facing shores will gradually subside through the rest of the week as the trades weaken,” the National Weather Service wrote. “No significant south swells are expected.”