Friday, April 03, 2020

Friday 4 3 20 morning call

It was another great day of fun waves on the south shore, this is Pete Cabrinha enjoying a rather lovely Ukumehame.

4am significant buoy readings and discussion.
South shore
2.8ft 13s from 169

2.1ft 14s from 183

There's still waves from the SSE and that's very perplexing, as my fetches maps don't justify them. Here's what Pat Caldwell says:
A mid latitude low pressure to storm force south of 50S within 100-120W moved slowly E 3/23-25. It had fetch aimed directly at Hawaii, which is unusual for lows in that area to establish such long, wide fetches of sufficient duration to generate swell for Hawaii. A much weaker subtropical low formed S to SE of the Tuamotu Islands 3/26-27, adding shorter-period swell from a similar direction of 145-160 degrees to the aforementioned source.

Below is the map of the 27th, the only one where the Tuamotu fetch deserved a red circle. But that's 8 days ago and the travel time from there is only around 5 days.

Whatever the source is, there's still waves. Check the Lahaina webcam if interested, for size, conditions and consistency.

North shore
4.3ft @ 9s from 74° (ENE)

Still a bit of windswell at Pauwela, better enjoyable at eastern exposures.

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

North Pacific fetches map (about 4 days travel time from the NW corner):
The low to our NW today is only aiming winds to our west. The remote NW fetch is better oriented and there's still an offshore E windswell as well.

South Pacific fetches map (about 7 days travel time from east of New Zealand):
Moderate S fetch.

Morning sky.

1 comment:

Anonymous said...

Love your blog, been following it religiously for a few months now.

The fetch in the South Pacific you posted today is moderately sized, but I predict that we'll see some good sized waves from it. The high that's right to the west of the low means there's likely a drastic difference in atmostpheric pressures-- resulting in longer, sustained winds. Let's see in a few days if we might be pleasantly surprised by larger-than-anticipated waves.