Forecast: Massive waves take on north & west shores; Clouds for - Hawaii News Now - KGMB and KHNL

Forecast: Massive waves take on north & west shores; Clouds for windward & mauka

HONOLULU (HawaiiNewsNow) -

The tail-end of a front is sweeping over the state, bringing our north slopes and windward and mauka neighborhoods clouds and light rain.  It is like night and day when you compare sky conditions of the windward side verses the leeward side. Low clouds are lingering over Kauai, Oahu and parts of Maui County on the windward side where the leeward side is seeing some passing clouds with sunshine.  Behind the front, we will see north-northeast winds build in, this will continue to bring some windward and mauka showers to the islands.  The front is expected to dissipate later today then the trade winds will briefly take over through Friday.

We are also tracking a massive warning-level swell.  According to the National Weather Service, the Hanalei buoy is peaking near 17 feet 18 seconds as of 8 am, while the Waimea buoy continues to rise with an 8 am reading of 12 feet 18 seconds. A small craft advisory /sca/ is posted for waters exposed to the swell. This swell will warning level surf to most north and west facing shores of the smaller islands today and tonight. Some of this swell energy will also impact the north and west facing shores of the Big Island, so a high surf advisory is in effect for those shores. The swell will continue through tonight, and then gradually drop Thursday and into the weekend.  More giant swells will follow after this one.  Organizers may consider Wednesday for the EDDIE, if conditions continue to look promising, but the time-frame, the winds and conditions must be just right for the contest.

-North Shores: 35 to 45 feet today, lowering to 20 to 25 feet Thursday
-West Shores:20 to 30 feet today, lowering to 12 to 18 feet Thursday
-East Shores: 2 to 4 feet through Thursday
-South Shores: 2 to 4 feet through Thursday

After a couple of days with the trade wind pattern, another weak front will make its way to the islands. It will interfere with the trade wind flow, causing winds to come out of the south at times.  This will bring the haze back in some spots.  With this scenario, you can expect nighttime temperatures will drop below normal as the downslope flow brings cooler air from higher elevations to sea level.

High surf warning until 6 am HST Thursday for Niihau, Kauai windward, Kauai leeward, Waianae coast, Oahu north shore, Oahu Koolau, Molokai, Maui windward west, Maui central valley, windward Haleakala.

High surf advisory until 6 am HST Thursday for Kona, Big Island north and east, Kohala.

Small craft advisory until 6 am HST Thursday for Kauai northwest waters, Kauai windward waters, Kauai leeward waters, Kauai channel, Oahu windward waters, Oahu leeward waters, Kaiwi Channel, Maui county windward waters, Maui county leeward waters, Alenuihaha channel, Big Island windward waters.

Updated with aloha:

Jennifer Robbins 

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