Special Weather Statement issued October 18 at 8:37AM HST by NWS Honolulu

…NUISANCE COASTAL FLOODING EXPECTED THE NEXT COUPLE OF DAYS…
Observed ocean water levels continue to be much higher than
predicted, by up to 10 inches in some areas. Combined with high
astronomical tides associated with the new moon, nuisance coastal
flooding is expected during high tides during the early morning
Monday and Tuesday. The observed water level at Honolulu Harbor
early this morning during high tide was 3.16 feet, which is the
highest daily mean water level ever observed at that location.
Main impacts from the high water levels will occur in the
afternoon and evening hours. Impacts may include flooding of
beaches that are normally dry, some minor coastal erosion, and
salt water inundation of typically vulnerable low- lying roads,
docks, boat ramps, and other coastal infrastructure.
Visit tidesandcurrents.noaa.gov for information about predicted
astronomical tides and observed water levels in your area.

Counties:
Big Island North and East; Kahoolawe; Kauai Leeward; Kauai Windward; Kohala; Kona; Lanai Makai; Leeward Haleakala; Maui Central Valley; Maui Leeward West; Maui Windward West; Molokai Leeward; Molokai Windward; Niihau; Oahu Koolau; Oahu North Shore; Oahu South Shore; Olomana; South Big Island; Waianae Coast; Windward Haleakala