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Advisory Possible as new NW Swell Builds

December 15, 2015, 1:40 AM HST
* Updated December 14, 7:49 PM
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Alerts

There are no marine alerts posted at this time.

Check our breaking news section for any urgent weather alerts.

**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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Screen Shot 2015-12-14 at 7.26.56 PMBig Island Surf Forecast

Hilo side: Wave heights are expected head high today. The best breaks could get up to a couple feet overhead on the sets.

Kona side: Wave heights knee/thigh high today from the northwest.

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South: Breaks open to the trade swell could get up to shoulder/head high. Out of the south-southwest surf will start out below waist high and build to about waist high by sunset.

Screen Shot 2015-12-14 at 7.27.01 PMA northwest swell is expected to continue filling in through the day Tuesday peaking late Tuesday into early Wednesday. This swell should bring surf near advisory levels along north and west facing shores at its peak. The swell is forecast to diminish Wednesday night and Thursday. The low generating this swell will be quite deep, but the largest swells will pass north of Hawaii.

A big surge in easterly winds is expected to bring advisory conditions over most coastal waters by the middle of the week. Strong trades are expected for the second half of the week and gale warnings may be necessary for the Alenuihaha channel as the strong trades accelerate through the channel.

Small bump expected to build Tuesday out of the south-southwest and peak Wednesday around waist high.

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 / NWS

Image: NOAA / NWS

Image: NOAA / NWS

Image: NOAA / NWS

Image: NOAA / NWS

Image: NOAA / NWS

Image: NOAA / NWS

Image: NOAA / NWS

Image: NOAA / NWS

Image: NOAA / NWS

Image: NOAA / NWS

Image: NOAA / NWS

Image: NOAA / NWS

Image: NOAA / NWS

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