Downgraded swell for this week, next decent swell later next week
Hawaii North Shore forecast by Craig Brokensha (issued Tuesday 15th December)
Best Days: Tuesday afternoon through Thursday, later next week
This week and next week (Dec 15 - 25)
Not much in the way of swell the last few days, with a small kick yesterday, easing back from the 3ft range this morning.
Tomorrow morning is expected to be a low point in swell activity, and a large, powerful long-period NW groundswell that was due to kick very solidly into the afternoon has unfortunately gone pear-shaped.
A 'bombing low' off the Japanese coast the last few days was forecast to slow down and aim a great fetch of storm to hurricane-force NW winds towards Hawaii.
While the low did produce a fetch of this calibre, its track was faster to the north-east perpendicular to Hawaii's swell window, not as favourably aimed and then cut off as it tracked across the Aleutian Islands.
Instead we're set to see a mix of small to moderate NW groundswell pulses of mid and long-period, the first building through tomorrow and reaching 4-5ft+ across the North Shore into the afternoon.
Into Wednesday a stronger pulse is due, coming in around the 6ft range on the sets before dropping back from 5-6ft or so Thursday morning.
Moderate E/NE trades are expected to increase a touch through tomorrow, becoming fresher through Wednesday and gusty to strong Thursday, remaining so through the weekend.
Longer term there's nothing too major due into early next week with a small inconsistent long-range NW groundswell due Tuesday ahead of hopefully a moderate to possibly large pulse later in the week. We'll have a closer look at this on Thursday though.