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Series of NW Swells Forecast This Week

December 19, 2017, 1:26 AM HST
* Updated December 18, 9:04 PM
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Image: James Grenz

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

Small Craft Advisory: For building seas of 10 feet Tuesday. Posted through 6 p.m. Wednesday.

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

**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

Hilo: Wave heights are expected to be shoulder/head high today.

Kona: Wave heights are expected to be knee/thigh high today. The best breaks could get waist high on the sets, especially later in the day as the swell peaks. Some spots will see traces of the northwest as well.

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South: Wave heights are expected to be knee/thigh high today. The best breaks could get waist high on the sets, especially later in the day as the swell peaks.

New, small south-southwest fills in today.

Our current north-northwest swell is fading with a mix of north-northeast and north filing in and bringing advisory level conditions to some north and east exposures across the state.

Another swell is forecast to fill in Wednesday with yet another, larger, northwest swell forecast for the weekend. Advisories for the surf will likely be extended through the weekend as our series of swells fill in one after another.

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

Image: NOAA

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