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Fernanda Swell Filling in for Big Island

July 18, 2017, 1:54 AM HST
* Updated July 17, 11:07 PM
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Image: James Grenz

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

Small Craft Advisory: East to northeast winds up to 25 knots through 6:00 p.m. Tuesday.

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 waist high today. The best breaks could get up to chest high. Breaks without the trade exposure will be flat.

Kona side: Wave heights are expected to be knee/thigh high today. Flat for many Kona breaks not catching the swell.

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South: Wave heights are expected to be knee/thigh high today.

No significant swells are expected this week. A series of small south swells is expected to keep background swell going along southern exposures through the middle of the week. We could see a slightly bigger run of swell starting around the 19th of this month.

Trade wind swells will continue to produce short period choppy surf along east facing shores.

Tropical system Fernanda will produce swell for us. Current models show swell has been filling in overnight and build through the week, possibly up to advisory levels. Will keep an eye on it as the size of the swell is highly dependent on the eventual track and intensity of the tropical system.

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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