Chris Archer / ArcherShoots

HIGH SURF ADVISORY FOR NORTH FACING SHORES

Swell Summary

Trade winds have decreased since last evening and the Small Craft Advisory (SCA) for waters east of Oahu has been cancelled. Winds will be much lighter and favor a more east southeast direction as a front approaches from the northwest. These lighter winds are expected to persist into Wednesday. A new high building in north north of the area Thursday and Friday will cause trade winds to pick back up to breezy to locally windy levels.

Earlier choppy surf along east facing shores has subsided enough to warrant cancellation of the High Surf Advisory (HSA) there. Surf along east facing shores will pick back up toward the end of the week as trade winds strengthen once again.

A large and long period northwest swell will begin to fill in tonight. This swell will be rather long lived, with warning level surf expected during its peak Tuesday night and early Wednesday. This swell will then lower gradually into Thursday. A second and larger northwest swell will fill in on Thursday, peak Thursday night, then lower gradually into next weekend. These swells, combined with high astronomical tides, may cause some coastal inundation along low lying areas, especially during the early morning high tide cycles. Both of these swells will cause seas to exceed the 10 foot SCA threshold across exposed waters. Therefore, a new SCA has been issued for western waters for the expected northwest swell and is in effect from tonight through Tuesday night. A High Surf Warning (HSW) is in effect from tonight through Tuesday night for north and west facing shores of Niihau, Kauai and Oahu, while an HSA is in effect for the same period for north and west facing shores of Molokai and north facing shores of Maui. The SCA, HSW and HSA may all have to be extended and expanded as the week wears on.

NORTH SHORE

am        pm  

Surf: Small scale (ankle to knee high) surf.

Conditions: Semi clean/sideshore texture and current in the morning with ESE winds 20-25mph. Sideshore texture/chop conditions for the afternoon with the winds shifting to the E.

SOUTH SHORE

am        pm  

Surf: Minimal (ankle high or less) surf.

Conditions: Clean in the morning with NNE winds less than 5mph. Semi glassy/semi bumpy conditions for the afternoon with the winds shifting WNW 5-10mph.

WEST SIDE

am        pm  

Surf: Minimal (ankle high or less) surf.

Conditions: Clean with ESE winds 15-20mph in the morning shifting E for the afternoon.

Data Courtesy of NOAA.gov and SwellInfo.com