Officials have extended a coastal flooding statement through 6 a.m. Wednesday as a high surf warning continues for south-facing shores of Hawaiʻi Island, with dangerously large breakers of 10 to 15 feet expected.
The National Weather Service said a long-period south-southwest swell combined with seasonal King Tides is likely to produce minor coastal inundation during high tides through Tuesday. Forecasters noted water levels are running higher than predicted in some locations, increasing the risk of flooding along shorelines and in low-lying coastal areas, especially during late afternoon and early evening high tides.
High surf warning and closures
Under the high surf warning, strong breaking waves and powerful currents will create hazardous conditions for swimmers and surfers along south shores. Hawaiʻi County closed Kahaluʻu, Laʻaola (Magic Sands), and Kohanaiki beach parks on Sunday, and officials cautioned that additional parks could close without notice.
Beachgoers should expect wave run-up and occasional overwash onto beaches and walkways, particularly near peak tides. County officials urged the public to follow all directions from Ocean Safety personnel. When in doubt, do not go out.
Coastal flooding precautions during high surf warning
Impacts from the high surf and elevated water levels are forecast to be moderate to high. The National Weather Service advised drivers to avoid flooded roadways. If salt water cannot be avoided, rinse vehicles with fresh water afterward. Residents and businesses should consider moving electronics, vehicles, and other valuables to higher ground.
Boaters are encouraged to check mooring lines for excessive tension and watch for overwash at boat ramps. Secure canoes and other watercraft stored on the beach.
The high surf warning remains in effect until 6 a.m. Tuesday, with the coastal flooding statement extended through early Wednesday. Conditions may change quickly, and officials recommend monitoring forecasts and advisories, including any updates to the high surf advisory for south shores and related alerts from the Hawaiʻi County Civil Defense Agency.
