HIGH SURF ADVISORY FOR NORTH AND WEST FACING SHORES

Swell Summary

The nearshore Hanalei PacIOOS buoy suggests surf remains just shy of the High Surf Advisory (HSA) threshold this afternoon with slightly decreased values at Waimea owing to shadowing by Kauai. However, favored NW-facing exposures on Oahu likely remain near the HSA threshold as well. This moderate, long period NW (310) swell will subside through the first half of the night as long period forerunners of the next swell in the sequence arrive. Tuesday will feature building large, long period surf that will easily exceed HSA thresholds for N and W facing exposures, potentially including Leeward Big Island. West-facing shores of Leeward Big Island potentially reach their warning threshold late Tuesday into Tuesday night. A reinforcing pulse of similar size will help keep surf at advisory levels through Wednesday before dropping below advisory thresholds Thursday. A High Surf Advisory has therefore been issued for susceptible shorelines of Kauai through Molokai. A large, long period NW (320) swell will generate surf to High Surf Warning thresholds along N and W facing shores Friday, peak Saturday then slowly subside into early next week. Surf along E and S facing shores remains small through the period.

Data Courtesy of NOAA.gov and SwellInfo.com