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Advisory Level Surf Impacting Some North Shores

December 13, 2017, 1:05 AM HST
* Updated December 12, 8:54 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 14 to 19 feet.

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 overhead to double overhead today.

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

South: Wave heights are expected to be chest/head high today or more for spots that pick up the wrap. Spots that don’t pick up the wrap will be ankle/waist high today.

Our current north-northwest swell is expected to peak into Wednesday morning and bring another round of advisory level surf for the Big Island. 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.

A cold front is forecast to move down the island chain today.

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

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