(BIVN) – A High Surf Warning is again in effect for east-facing shores of Hawaiʻi Island, the National Weather Service says, while a Winter Storm Watch has been issued for Big Island summits.
A large Northeast swell will impact Hawaiʻi Island from Upolu Point to Cape Kumukahi, emergency officials say. A High Surf Advisory has also been issued for north-facing shores.
Surf is forecast to build to 18 to 22 feet tonight through Wednesday and continue to Thursday. The highest threat for coastal impacts will coincide with the high tide, which occurs at 11 p.m. Tuesday.
The incoming large north northeast swell “will bring surges into exposed north facing harbors, including Kahului and Hilo, tonight through Thursday,” the National Weather Service says. “These surges will be capable of damaging boats and infrastructure due to the jostling of docks and boats. Mariners should exercise extreme caution if using these harbors.”
Bay Front Highway from Pauahi Street to Waianuenue is closed, civil defense says. Beach parks will close according to schedule tonight and be assessed in the morning, officials say.
“Oceanfront residents and beachgoers along the affected shores are advised to be on the alert for high and dangerous surf,” a civil defense message stated. “Harbor surge will affect Hilo Bay, boat owners and oceanfront residents should take action to secure their property.”
Meanwhile, periods of freezing rain and snow will possible at the summits of Mauna Kea and Mauna Loa, where the Winter Storm Watch goes into effect from Wednesday morning through late Thursday night.
“Very cold air aloft will move over the islands, beginning tonight and continuing into Friday,” the National Weather Service reported. “Additionally, moisture is expected to occasionally spread to the elevations of the summits, with bouts of winter weather expected.”
Total snow accumulations of up to 3 inches are possible.