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New NW Swell Fills in, Trade Swell Continues

September 22, 2017, 7:17 AM HST
* Updated September 22, 7:28 AM
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Image: James Grenz

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

Small Craft Advisory: In effect through 6 a.m. Friday

Check our breaking news section for any urgent weather alerts or updates to the weather alerts listed above.

**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 side: Surf heights are expected to be knee/waist/chest high today from our trade swell. Spots catching the northwest could get up to shoulder high.

Kona side: Surf heights are expected to be up to be pretty flat today.

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South: Surf heights are expected to be up to knee high or less today.

Nothing significant is on the radar for southerly exposures at this time.

A new, modest, northwest swell is forecast for Thursday / Friday. Expected to peak Thursday night into Friday morning before slowly easing late Friday and into the weekend. We could see some other swells developing from some storms near Japan. Will keep an eye on it.

Over the weekend the trade swell is forecast to drop as winds weaken.

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

Image: NOAA

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