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Large NNW Begins to Slowly Ease Today

December 14, 2017, 1:05 AM HST
* Updated December 13, 7:28 PM
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Image; James Grenz

Marine Alerts (as of 1:00 a.m.)

High Surf Advisory: North shores of the Big Island through 6 p.m. Thursday.

Small Craft Advisory: In effect through Friday at 6 a.m. for winds up to 30 knots and seas of 12 to 18 feet.

Gale Warning: For northeast winds up to 35 knots with seas up to 8 to 12 feet.

Check our breaking news section for any weather alerts or updates that may have popped up since this forecast was posted. 

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**Click directly on the images below to make them larger. Charts include: Big Island projected winds, tides, swell direction & period and expected wave heights.**

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Big Island Surf Forecast

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Hilo: Wave heights are expected to be head high to well overhead today.

Kona: Wave heights are expected to be waist/chest high today or more for spots that pick up the wrap. The best breaks could get up to shoulder/head high on the sets.

South: Wave heights are expected to be knee/chest high today or more for spots that pick up the wrap.

Our current north-northwest swell is expected to slowly ease today through Saturday. Lots of variation for this swell since it’s coming from 330°… some spots are expected to reach advisory level depending on how exposed they are.

Thunderstorms are possible as early as Thursday night with the chance for thunderstorms extending through Saturday.

Keep in mind, surf heights are measured on the face of the wave from trough to crest. Heights vary from beach to beach, and at the same beach, from break to break.  

**Click here for your detailed Big Island weather report.**

Image; NOAA

Image; NOAA

Image; NOAA

Image; NOAA

Image; NOAA

Image; NOAA

Image; NOAA

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