Monday 9 24 18 morning call

A SUP and a windfoiling session for me yesterday. Young South African Nathan Van Vuuren spent two months in Maui and impressed everybody in the foiling community with his skill and style. He's the foiler that I know that foils in the pocket the most, as he's almost doing the same lines as if he were surfing, but without the friction of touching the water with his board.


This week's outlook: the waves are going to be very small everywhere before both north and south shore come back to life next week.

3am significant buoy readings
South shore
W
2.5ft @ 10s from 149° (SE)

2.4ft @ 11s from 162° (SSE)

 

SW
1.7ft @ 15s from 173° (S)

 

SE
1.8ft @ 14s from 166° (SSE)

 

Barbers

1.8ft @ 12s from 182° (S)            

1.8ft @ 9s from 186° (S)

1.4ft @ 15s from 191° (SSW)

 

Lanai

1.8ft @ 9s from 190° (S)

1.5ft @ 11s from 189° (S)

1.4ft @ 4s from 142° (SE)

1.3ft @ 15s from 196° (SSW)

 

Mixed low readings of different periods at the buoys. Yesterday morning Thousand Peaks was flat to knee with occasional waist high sets and quite clean and enjoyable. Hopefully will be similar today, even though the southerly flow of the wind (see discussion below) might affect the conditions at some point.

 

North shore
Pauwela

3.6ft @ 9s from 58° (ENE)

2.9ft @ 5s from 64° (ENE)

 

The long period low energy disappeared at Pauwela, 3.6f 9s is not much to get excited about, but at least 58 degrees is an unblocked direction. Expect very small waves at Hookipa.

Wind map at noon. Yesterday many people were surprised by the fact that the north shore got windy in the afternoon. The model I use (link n. -2) predicted it perfectly instead and it shows some wind up at Hookipa also for today, in the midst of a pretty steady southerly flow happening west of the islands.

But that's because by then the heating of the Haleakala will generate the usual thermal wind. Look how different the situation looks at 8am. Goona be a hot morning.

 

Gonna be a hot week actually, as the Windguru table below shows, as the wind is going to be very light, before the trades come back (pretty strong) over the next weekend.

 

In the map below, I drew a couple of arrows to indicate the start of the formation of an area of low pressure to the north of the islands that is responsible for the southerly flow that will kill the trades. Hopefully, in a couple of days the low should be strong enough to send us a decent northerly swell of medium period.
The two circles well to the west and to the east I also drew, indicate a couple of very weak/small fetches that won't generate much wave energy for us. This week is going to have very small waves on the north shore.

 

Pretty strong fetch in the Tasman Sea and south of it. I circled it all, but the strongest part won't have a direct aim towards us. We'll still get some angular spreading though and we'll have a decent SSW swell for all next week. Seems like very small waves also on the south shore in the meantime.

 

Morning sky.