Tuesday, October 20, 2020

Tuesday 10 20 20 morning call

 Kai Lenny's latest video.


6am significant buoy readings and discussion.
South shore
Barbers
1.4ft @ 12s from 190° (S)

Lanai
2.2ft @ 13s from 193° (SSW)

Couple of feet 13s at Lanai make for fun size waves on the south shore. Check the Lahaina webcam if interested, for size, conditions and consistency. There's occasional shoulder high sets.




North shore
NW101
5.8ft @ 8s from 281° (WNW)

Waimea

2.4ft @ 9s from 21° (NNE)
2ft @ 11s from 20° (NNE)

Mokapu

2.9ft @ 9s from 65° (ENE)
2.8ft @ 11s from 64° (ENE)

None of that WNW energy up at the NW buoy will reach us, today we're dealing with the small energy from the NE you see at Waimea and Mokapu. Hookipa and the eastern exposures will have small but clean waves thanks to the lack of wind in the morning. Here's Pat Caldwell description of the fetch:

A long-lived, stationary surface high pressure 10/13-19 near 1030 mb at 40N, 140W set up a long, wide fetch over the 45-60 degree band of fresh to strong breezes for the portion closest to Hawaii within 30-40N, 130-145W, or beyond a 1000 nm, and near gales furthest away closer to California aimed SE of Hawaii. This should bring surf near to a notch above the east side average overnight Monday. The PacIOOS/CDIP Mokapu, Oahu, and Hilo, Hawaii buoys show some indications of low forerunners in the 10-12 second band Monday morning 10/19. Wave Watch III model shows the peak of the event Tuesday. With the large source, it should be long-lived with a slow decline leading into the weekend.

Below are the maps of Oct 13 through 17. As you can see, there's a fetch to our east on each of them. There's going to be easterly energy all week.


Wind map at noon
.The other ones can be found at link n.-2 of GP's meteo websites list in the right column (click on animation of the 10 meter column).



Fetches map (circles legend: red: direct aim, blue: angular spreading, black: blocked, yellow: apparent direct aim, but out of the great circle ray map, so not 100% sure).
North Pacific (about 4 days travel time from the NW corner of the North Pacific):




South Pacific (about 7 days travel time from east/west of New Zealand):



Morning sky.


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