Forecast: Light winds move in with more big surf

HONOLULU, Hawaii (HawaiiNewsNow) - Winds will weaken today, allowing development of afternoon seabreezes and interior clouds. Showers will increase Wednesday and Thursday as a front reaches the islands and dissipates. Trade winds will return and strengthen as the front dissipates. However, winds will diminish again late in the week as another front approaches, bringing the possibility of inclement weather late in the weekend. Models stall the front northwest of Kauai through Saturday before another reinforcing front pushes toward Kauai on Sunday. This has the potential to bring widespread rain late Sunday and into next week.

A High Surf Advisory (HSA) is currently posted for north and west facing shores of Niihau, Kauai, Oahu Molokai and north facing shores of Maui. Long period forerunners from a new large northwest swell will gradually fill in today, then lower gradually through Wednesday. A larger northwest swell is expected to arrive Wednesday night, peak on Thursday, then lower gradually Thursday night and Friday. Model guidance indicates warning level surf during the peak of this swell. An even larger northwest swell is on tap for the weekend with warning level surf expected once again. A combination of large surf this week coinciding with peak monthly high tides will worsen beach erosion issues for shores exposed to north and northwest swells. Additionally, vulnerable low lying locations not exposed to the large swells may experience nuisance flooding at and around the peak daily tide cycles this week (between midnight and daybreak).

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