UPDATE: Flood watch canceled
Update 4:30 p.m. Monday: The National Weather Service Flash flooding is no longer expected to pose a threat. However, pockets of locally heavy rainfall will be possible through Monday night.
Update 3:30 p.m. Sunday: The National Weather Service has canceled the high surf advisory for the Big Island, with buoys showing swell heights out of the northeast have dropped Sunday afternoon.
But the National Weather Service has issued a new alert flood watch for all Hawaiian Islands through 6 p.m. Monday.
A surface trough will develop west of the islands, allowing deep moisture to move over the islands from the south. While rainfall may be light at first, heavier slow-moving showers
are expected to develop, bringing the potential for flash flooding.
Flood-prone roads and other low-lying areas may be closed due to elevated runoff and overflowing streams. As showers will be moving over the islands from the south, leeward and urban areas may receive more significant flooding and property damage due to rapid runoff.
Flash flooding is life-threatening. Do not cross fast-flowing water in your vehicle or on foot.
Original Post: Portions of Bayfront Highway between Waianuenue Avenue and Pauahi Street will remain closed Sunday due to high surf and debris, according to the Hawaiʻi County Civil Defense Agency.
Motorists are being advised to detour using Kilauea Avenue.
Kamehameha Avenue now is open.
The National Weather Service has downgraded the High Surf Warnings for west- and northeast-facing shores of Hawaiʻi Island from Keahole Point in North Kona to Cape Kumukahi in Puna to High Surf Advisory through Monday morning.
For the Big Island, large breaking waves of 18 to 22 feet are forecast along north-facing shores and waves of up to 11 feet are forecast along west-facing shores.
Laupahoehoe, Coconut Island, Onekahakaha, Wai`olena, Richardson’s and Bayfront canoe area will remain closed Sunday.
Keokea and Kealoha Beach Parks plan to reopen Sunday afternoon if debris is cleared.